Analysis method for durability of drive axle bearing

The invention relates to a method for analyzing durability of a drive axle bearing, which comprises the following steps of: 1) collecting a load spectrum according to an actual road condition, and processing the load spectrum to generate a to-be-converted load spectrum; 2) converting the load spectrum to be converted into a simulation spectrum for analysis; 3) building a simulation model of the drive axle assembly, and importing the simulation spectrum to generate a circulation working condition of simulation analysis; and 4) operating the cyclic working condition to analyze the durability of the bearing to obtain an analysis result, and developing and designing the drive axle according to the analysis result. And the drive axle is developed and designed according to the determined durability of the bearing, so that the design accuracy is improved, the test reject ratio after the drive axle is developed and designed is reduced, the design modification time is greatly reduced, the design ...

Ring opening etherification reaction method in two-step approach for synthesizing glycidol ether

The invention discloses a ring opening etherification reaction method in a two-step approach for synthesizing glycidol ether, comprising the following steps: taking alcohol and epoxy chloropropane as raw materials, wherein the ratio of the molar number of hydroxide radical of the alcohol to the molar number of hydroxide radical of the epoxy chloropropane is 1:1-5; and performing ring opening etherification reaction under the action of catalyst to generate o-chlorohydrine ether intermediate. The invention is characterized in that the used catalyst is fluoboric acid, and the usage amount thereof accounts for 0.01-1.0% of the alcohol matter mass, and the temperature of the catalytic reaction is 10-90 DEG C. Compared with the prior art, the used catalyst fluoboric acid has the advantages of small toxicity, convenient operation, mild reaction, low cost, high reaction selectivity and the like.

Demonstration teaching aid of Euler's rotation theorem

A demonstration teaching aid of Euler's rotation theorem belongs to the technical field of scientific education. The demonstration teaching aid of Euler's rotation theorem consists of a first device and a second device, wherein the first device is able to set a posture of a reference rigid body; after setting, a Euler axis position and a primary Euler rotation angle are obtained by measuring rotation angles of three rotations in the first device, and substituting the rotation angles into a direction cosine matrix for calculation; the second device is used for verifying the theorem; a corresponding position with respect to the angle obtained from the previous calculation is adjusted in the second device, so as to demonstrate the position of the Euler axis; the rigid body is returned to the initial posture by adjusting a spherical hinge; and then the rigid body in the initial posture is rotated around the Euler axis; if the rotation angle is the primary Euler rotation angle, the rigid body ...

Combustion apparatus for EGR valve test

The invention discloses a combusting device used for an EGR valve test, which comprises a blower fan, an air cleaner, a first throttle valve, a second throttle valve, a combustor, an oil box, an oil pump, a fuel oil filter, an igniter, a first air inlet, a fuel oil spraying nozzle, a sparking plug and a second air inlet, wherein, the blower fan is respectively connected with the first throttle valve and the second throttle valve through the air cleaner, the first throttle valve is connected with the first air inlet of the combustor, the second throttle valve is mutually connected with the second air inlet of the combustor, the oil box is connected with the oil pump, the fuel oil filter and the fuel oil spraying nozzle in sequence, and the igniter is connected with the sparking plug. The combusting device can heat the inlet air by adopting a combusting and heat emitting method, to cause the oil and the air to be sufficiently mixed; both the air flow quantity and the air fuel ratio can be ...

Glycerol ether containing cyclohexyl binary ether alcohol and preparation thereof

The invention relates to glycidyl ether which contains cyclohexyl dibasic ether alcohol and a preparing method thereof. Concretely, the glycidyl ether is prepared as follows: firstly, polyether polyol is synthesized by taking dibasic alcohol and cyclohexene oxide as raw materials, and then the glycidyl ether is prepared after ring-opening and ring-closing reaction and synthesis. The glycidyl ether is used as an active diluent in the fields of epoxy coating, adhesives, and the like, with excellent performance.

Air conditioner load prediction method and system, electronic equipment and computer storage medium

The invention relates to an air conditioner load prediction method and system, electronic equipment and a computer storage medium, and relates to the field of power demand response, and the method comprises the following steps: obtaining historical air conditioner load data and historical influence factor data; performing factor analysis on the historical air conditioner load data and the historical influence factor data by using a Pearson correlation coefficient method, and determining an initial clustering center and a clustering number; performing K-means clustering by using a weight entropy method according to the initial clustering center and the clustering number to obtain a weighted Euclidean distance and a clustering result; determining a training sample set according to the weighted Euclidean distance and the clustering result; according to the training sample set, using a tuna swarm optimization algorithm to train an LSTM neural network to obtain an air conditioner load prediction ...

Adopt engine cooling liquid waste heat utilization warm -up system of solid -liquid phase transition heat reservoir

The utility model discloses an adopt engine cooling liquid waste heat utilization warm -up system of solid -liquid phase transition heat reservoir. This system includes: temperature sensor, electron temperature saver, electron fan, radiator solid -liquid phase transition heat reservoir, electronics three -way valve and MCU, the coolant liquid flows past the phase transition heat reservoir, heats phase change material, and phase change material takes place the phase transition, absorbs a large amount of latent heat, preserves in transferring to the phase transition heat reservoir with the unnecessary heat of engine for start the warm -up. Electron temperature saver and electron three -way valve are controlled by MCU, remain synchronous operation throughout, have guaranteed the prerequisite that does not influence the normal work of engine cooling system. After the engine was shut down, the systemic circulation was closed to electronics temperature saver and electronics three -way valve, ...

Method for synthesis epoxy cyclohexane with titanium molecular sieve catalysis

The invention relates to a method for using a titanium silicate molecular sieve to catalytically synthesize cyclohexene oxide, which is characterized in that: cyclohexene and peroxide are taken as raw materials, the titanium silicate molecular sieve serves as a catalyst for catalysis and epoxidation, and the cyclohexene oxide is generated through the reaction with high selectivity; and the catalyst and a solvent used in the reaction can be recycled. The method has advantages of low production cost, environmental friendship and reasonable preparing route, and is suitable for the industrialized production of cyclohexene oxide.

Novel heat pump tandem compound waste heat recovery system

The utility model provides a novel heat pump tandem compound waste heat recovery system draws gas acting electricity generation steam extraction by the steam turbine of mutual intercommunication and utilizes system, heat supply network heating system and recirculating cooling water system to constitute, and the steam turbine draws gas acting electricity generation steam extraction and utilizes the system to include steam turbine draw gas pipeline, screw rod expander, dump line, absorption heat pump, peak load calorifier, hydrophobic pipeline, pre -heater and condenser, heat supply network heating system includes heat supply network return water pipeline, pre -heater, absorption heat pump, peak load calorifier, heat supply network supply channel and heating power station, recirculating cooling water system includes condenser, circulating pipe way, electric compression heat pump, supplies return water pipeline and absorption heat pump. The utility model discloses it utilizes system, heat ...

Combustion apparatus for EGR valve test

The invention discloses a combusting device used for an EGR valve test, which comprises a blower fan, an air cleaner, a first throttle valve, a second throttle valve, a combustor, an oil box, an oil pump, a fuel oil filter, an igniter, a first air inlet, a fuel oil spraying nozzle, a sparking plug and a second air inlet, wherein, the blower fan is respectively connected with the first throttle valve and the second throttle valve through the air cleaner, the first throttle valve is connected with the first air inlet of the combustor, the second throttle valve is mutually connected with the second air inlet of the combustor, the oil box is connected with the oil pump, the fuel oil filter and the fuel oil spraying nozzle in sequence, and the igniter is connected with the sparking plug. The combusting device can heat the inlet air by adopting a combusting and heat emitting method, to cause the oil and the air to be sufficiently mixed; both the air flow quantity and the air fuel ratio can be ...

Continuous rotary valve for EGR valve hot gas periodical impact fatigue durability test

Method for retrieving n-amyl alcohol from oxidized byproduct of cyclohexane

The invention relates to a method for retrieving n-amyl alcohol from oxidized byproduct of cyclohexane, which is characterized in that the n-amyl alcohol in clean oil is subjected to azeotropic rectification through adding azeotropic agent to obtain a high-content n-amyl alcohol mixture, the mixture is subjected to catalyst reaction to remove isomeric cyclopentyl alcohol of the n-amyl alcohol and then rectified to obtain 99 percent n-amyl alcohol product; and a low-boiling-point mixture obtained by reclaiming and separating cyclohexene oxide in the clean oil is subjected to catalyst reaction to remove the isomeric cyclopentyl alcohol of the n-amyl alcohol and then rectified to obtain 99 percent n-amyl alcohol product. The method has the characteristics of low cost, environmental protection and simple process.

Method for controlling knocking noise of NVH gear of electric drive system of pure electric vehicle

The invention discloses a method for controlling knocking noise of an NVH gear of an electric driving system of a pure electric vehicle. The method comprises the following steps: 1) establishing a multiple linear regression equation about the vibration amplitude of a speed reducer, the torque change slope of a motor and the gear backlash of the speed reducer in the electric driving system; 2) collecting a plurality of groups of experimental data; (3) respectively substituting a plurality of groups of experimental data acquired in the step (2) into the multiple linear regression equation in the step (1), solving the motor torque change slope of the multiple linear regression equation, the regression coefficient of the gear backlash of the speed reducer and a constant b0 according to the principle of a least square method, and obtaining the multiple linear regression equation with the determined regression coefficient; and 4) setting a vibration amplitude threshold value of the speed reducer ...

Exhaust gas recirculation valve and cooler combined test device

The invention discloses a test device for combining an exhaust gas recirculation valve with a cooler. Through a first three-way valve, a second three-way valve and a first four-way valve, a high-temperature gas device not only can be singly connected with a recirculation valve for exhaust gas to be tested, but also can be separately connected with a recirculation cooler for the exhaust gas to be tested, or can be jointly connected with the recirculation valve for the exhaust gas to be tested and the recirculation cooler for the exhaust gas to be tested; then through a second four-way valve and a fourth three-way valve, a high-temperature gas device is connected to a flow meter for measuring the flow. Meanwhile, two additional switch valves are installed in a pipeline, so as to control theprecedence sequence during the combination measurement of the recirculation valve for the exhaust gas to be tested and the recirculation cooler for the exhaust gas to be tested. The test device can be used ...

Method for preparing cylohexanediol diglycidyl ether

The invention discloses a method for preparing cylohexanediol diglycidyl ether. The method comprises: generating cyclohexanediol through the hydration of cyclohexene oxide; synthesizing o-chlorohydrin ether through the ring-opening reaction of dehydrated cyclohexanediol and epichlorohydrin; reacting the o-chlorohydrin ether and alkali to synthesize 1,2-cylohexanediol diglycidyl ether crude products; and obtaining products by performing oil-water separation, washing and filtration on the crude products and distilling out light components, wherein catalysts for both hydration and ring-opening reaction are fluoboric acid, and the mol ratio of cyclohexene oxide to water to fluoboric acid to epichlorohydrin is 1:5-50:0.002-0.1:1.8-2.5. The method has the advantages of taking fluoboric acid as the catalysts for both hydration and ring-opening reaction, realizing the organic unity of the catalysts in a two-step process, reducing energy consumption, shortening process time, avoiding large amounts ...

Method for judging content of inorganic chlorine in epoxy resin

The invention relates to a method for judging the content of inorganic chlorine in epoxy resin, which comprises the following steps: (1) when the water-washing technology is carried out during the production process of glycerin ether, that is using a conductivity meter for measuring the conductivity of washing water at each time of taking the washing water respectively, and using the chemical titration method for measuring the content of the inorganic chlorine in the glycerin ether after each time of water washing; and (2) when data of the conductivity of the washing water which corresponds to the qualified content of the inorganic chlorine in the glycerin ether after the water washing is found, taking the data of the conductivity of the washing water as the basis for judging whether to stop the water washing or not and whether the content of the inorganic chlorine in the glycerin ether product is qualified or not during the production of the glycerin ether. The method has simple operation ...

Automobile semi -axle's dust cover mounting structure

The utility model relates to an automobile semi -axle's dust cover mounting structure for the assembly of car transaxle. The utility model discloses a semi -axis, the outer end of semi -axis is equipped with the semi -axis bearing through the bearing frame, is equipped with the dust cover between the interior terminal surface of flange of semi -axis and the outer terminal surface of bearing frame, and the bearing frame outer end is equipped with L type constant head tank along the circumferencial direction, and the dust cover has the L type installation department with L type constant head tank looks adaptation, makes the dust cover joint in the bearing frame outer end through the pressure equipment. The utility model discloses a mode of pressure equipment for the dust cover conquassation is avoided appearing in the bearing frame outer end by the dust cover joint, and then causes the not hard up phenomenon of half axle bolt, and then avoids appearing safe trouble, in addition, adopts the ...

Engine waste heat utilization heating machine system and method adopting solid liquid phase change heat reservoir

The invention discloses an engine waste heat utilization heating machine system and method adopting a solid liquid phase change heat reservoir. The engine waste heat utilization heating machine system comprise the solid liquid phase change heat reservoir, an MCU, a cooling liquid temperature sensor, an electronic water pump, an electronic tee-joint liquid valve, an electronic thermostat, an electronic fan, a heat radiator, an electronic liquid valve, an electronic gas valve, a silencer, an electronic tee-joint gas valve, an exhaust temperature sensor, an exhaust pipe and a four-way pipe joint. The electronic gas valve and the electronic tee-joint gas valve serve as execution mechanisms for switching the phase change heat reservoir between a heat storage working condition and a storage working condition, and the electronic tee-joint liquid valve and the electronic liquid valve serve as execution mechanisms for switching a heating machine working condition of the phase change heat reservoir ...

BIT controller for LCD

This invention discloses a LCD BIT controller, which comprises brightness sensor, temperature sensor and parameter test module with outer circuits. The flash single machine and outer circuits form the central control module that is connected with the parameter test module and analyzes and the data with program set formula from the parameter test module and outputs the signals. The output module with power source and switch circuits is connected with central control module and controls the executive mechanism to change the working state of the display to be adaptive to the environment changes when receiving the control signals from the central control module.

Adopt engine waste heat utilization warm -up system of solid -liquid phase transition heat reservoir

The utility model discloses an adopt engine waste heat utilization warm -up system of solid -liquid phase transition heat reservoir, engine waste heat utilization warm -up system includes: solid -liquid phase transition heat reservoir, MCU, coolant temperature sensor, electronics water pump, electronics tee bend liquid valve, electronics temperature saver, electronics fan, radiator, electronics liquid valve, electronics pneumatic valve, muffler, three breather valves of electronics, exhaust temperature sensor, blast pipe, the four -way union, three breather valves of electronics pneumatic valve and electronics are as the actuating mechanism of phase transition heat reservoir switching between heat -retaining operating mode and save operating mode, and electron tee bend liquid valve and the electron liquid valve actuating mechanism as phase transition heat reservoir warm -up operating mode switch. In succinctly being coupled to former quick -witted system through three breather valves of ...

Glycidol ether containing cyclohexyl binary ether alcohol and preparation method thereof

The invention relates to glycidol ether containing cyclohexyl binary ether alcohol and a preparation method thereof. The glycidol ether containing the cyclohexyl ether alcohol binary ether alcohol contains two active epoxy groups and a cyclohexyl and multi-group ether bond structure, has the performance of improving the fluidity of resin, can also endow cured epoxy resin with good weather resistance and toughness and has small influence on the other mechanical performances of the cured epoxy resin. The preparation method comprises the following steps: synthesizing polyether alcohol by taking aliphatic diol and epoxy cyclohexane as raw materials; or synthesizing polyether by taking cyclohexanediol and aliphatic epoxide as raw materials; and further synthesizing the glycidol ether. The glycidol ether containing the cyclohexyl binary ether alcohol is mainly used as a reactive diluent in the fields of epoxy resin paint, adhesive and the like.

Exhaust recycled valve multi-functional test device

The invention discloses a waste-gas recycling valve multi-function test apparatus. The gas outlet of a burner is successively connected with a cooler, a continuous rotary valve, one end of an overflow valve and the inlet of a waste-gas recycling valve under test; the gas inlet of a vacuum pump is successively connected with one end of the overflow valve, a two-position three-way valve and a vacuum tube of the waste-gas recycling valve under test; the outlet of the waste-gas recycling valve under test is successively connected with an exhaust cooler, a counterbalance valve, a high-temperature two-position three-way valve and a mass flowmeter, and then is filled with atmosphere; the water inlet of the cooler is successively connected with a speed-adjustable water pump and a cooling water tank; and the water outlet of the cooler is connected with a drain pipe. The invention can be used to test the flux characteristics of a waste-gas recycling pump, the dynamic characteristics of a vacuum waste-gas ...

Method for preparing epoxy cyclohexane

The invention relates to a method for preparing cyclohexene oxide. The method is to take cyclohexene as a raw material, and hydrogen peroxide as an oxidizing agent, in the presence of a solvent and an additive, the cyclohexene oxide is prepared through the catalytic oxidation by a catalyst prepared by CN1204970C, and the method is characterized in that: in the process of oxidation reaction, a water phase is moved out from a reaction system after the oxidizing agent consumption is reduced to a certain extent, but an oil phase continues to react for a period of time until the catalyst is fully separated out. Compared with the CN 1401640A process, the method shortens the reaction time and also obviously increases the recovery rate of catalyst, and is suitable for the industrialized production.

Method for preparing 1,2-diol compound by using catalytic hydration of epoxide

A method for preparing 1,2-diol compound by using catalytic hydration of epoxide comprises the following steps: adding water and fluoboric acid in a reactor, setting the temperature at 10-99 DEG C, and then adding epoxide in the reactor, wherein the total reaction time is 0.2-5h, and mole ratio of the epoxide, the water and the fluoboric acid is 1:1.5-35:0.00001-0.001. In the invention, the selectivity is high and the separation of the product is simple.

Electronic form data processing method and device, electronic equipment and storage medium

The invention provides an electronic form data processing method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining a plurality of electronic forms, each electronic form comprising at least one piece of initial data; obtaining finished product data from the initial data in the plurality of electronic forms, each piece of finished product data corresponding to one finished product; classifying the finished product data to obtain a finished product data queue corresponding to each classification, the finished product data queue including a plurality of pieces of finished product data; and determining a corresponding finished product for each piece of finished product data contained in the finished product data queue. By means of the method, an existing serial processing mode according to the electronic forms is converted into a parallel processing mode according to the finished product data, the processing performance is improved, and the ...

Continuous rotary valve for EGR valve hot gas periodical impact fatigue durability test

The invention discloses a continuous rotary valve used for an EGR valve fatigue durability test under periodic impaction of hot gas. A connecting pipe, grooves and through holes are respectively arranged at both sides of a casing body, a rotator is arranged inside the casing body, a through hole and the grooves are arranged on the rotator, a gear is arranged at one end of the rotator, a left supporting plate, a washer and a sealing cover used for positioning the casing body are arranged at one end of the casing body, another through hole is arranged on the wall surface of the other end of the casing body, a front and a rear blocking plates are respectively arranged in the both grooves on the casing body wall, gear racks are respectively arranged on the front and the rear blocking plates, another gear is arranged between the front gear rack and the rear gear rack, a third gear is arranged at one side of an axle and shares an identical axle with the gear between the two gear racks, and the ...

Aluminum oxide organic nanofluid for engine high temperature cooling technology

The invention discloses an alumina organic nanometer fluid used in engine high temperature cooling technology. The fluid is formed by evenly mixing 1 to 5 percent by volume of 10nm gamma alumina nanometer particles, 94 to 98 percent by volume of basic liquid and 1 percent by volume of polyethylene glycol dispersant by ultrasonic vibration, wherein, the basic liquid is formed by fully mixing 90 percent by volume of propanediol and 10 percent by volume of distilled water. The dispersant is polyethylene glycol 400. The boiling point of the alumina organic nanometer fluid is up to 120 DEG C to 123.5 DEG C; the thermal conductivity thereof is enhanced by 7.7 percent to 18.7 percent compared with the basic liquid, the coefficient of heat transfer thereof is enhanced by 10.1 percent to 76.3 percent compared with the basic liquid, and the amplitude of the flow resistance is smaller; therefore, the requirements of the engine high temperature cooling technology can be met. The alumina organic nanometer ...

Multifunction test device for exhaust gas recirculation valve

The invention discloses a waste-gas recycling valve multi-function test apparatus. The gas outlet of a burner is successively connected with a cooler, a continuous rotary valve, one end of an overflow valve and the inlet of a waste-gas recycling valve under test; the gas inlet of a vacuum pump is successively connected with one end of the overflow valve, a two-position three-way valve and a vacuum tube of the waste-gas recycling valve under test; the outlet of the waste-gas recycling valve under test is successively connected with an exhaust cooler, a counterbalance valve, a high-temperature two-position three-way valve and a mass flowmeter, and then is filled with atmosphere; the water inlet of the cooler is successively connected with a speed-adjustable water pump and a cooling water tank; and the water outlet of the cooler is connected with a drain pipe. The invention can be used to test the flux characteristics of a waste-gas recycling pump, the dynamic characteristics of a vacuum waste-gas ...

Exhaust gas recirculation valve and cooler combined test device

The invention discloses a test device for combining an exhaust gas recirculation valve with a cooler. Through a first three-way valve, a second three-way valve and a first four-way valve, a high-temperature gas device not only can be singly connected with a recirculation valve for exhaust gas to be tested, but also can be separately connected with a recirculation cooler for the exhaust gas to be tested, or can be jointly connected with the recirculation valve for the exhaust gas to be tested and the recirculation cooler for the exhaust gas to be tested; then through a second four-way valve and a fourth three-way valve, a high-temperature gas device is connected to a flow meter for measuring the flow. Meanwhile, two additional switch valves are installed in a pipeline, so as to control the precedence sequence during the combination measurement of the recirculation valve for the exhaust gas to be tested and the recirculation cooler for the exhaust gas to be tested. The test device can be ...

Construction method of spiral bevel gear pair suitable for multi-axis crossed angle transmission

The invention discloses a construction method of a spiral bevel gear pair suitable for multi-axis crossed angle transmission, and belongs to the technical field of gear design and manufacturing. Firstly, according to a gear meshing theory, a tooth surface of a driving spiral bevel gear and a tooth surface of a driven spiral bevel gear corresponding to different crossed axis angles are constructed respectively, and then a comprehensive tooth surface of the driving spiral bevel gear and a comprehensive tooth surface of the driven spiral bevel gear are obtained through curved surface fitting. And finally, combining the fitted comprehensive tooth surface with a base body to obtain the spiral bevel gear pair. According to the method, in the design stage of the spiral bevel gear pair, the actual crossed axis angle with the assembly error is fitted with the tooth surface corresponding to the designed standard crossed axis angle, so that the spiral bevel gear pair can meet the transmission requirements ...

Electronic device

The invention provides an electronic device which comprises a screen assembly, a system assembly and a rotating shaft assembly, the rotating shaft assembly comprises a connecting shaft, a first support, a second support and a base, the first support is rotationally connected with the connecting shaft, the screen assembly is fixed to the first support and can rotate around the connecting shaft, and the second support is used for arranging the connecting shaft; the base is fixed to the system assembly and rotationally connected with the second support through a rotating structure, the rotating structure is provided with a rotating center line, the second support can rotate around the rotating center line relative to the base, the rotating center line and the connecting shaft meet the perpendicular condition, and the system assembly comprises a shell opposite to the screen assembly. The shell is provided with a mounting hole, the base is limited to be arranged in the mounting hole along the ...

Data processing method and device, electronic equipment and storage medium

The invention provides a data processing method and device, electronic equipment and a storage medium, the method is applied to a file conversion server, the file conversion server comprises a task management module and a file conversion execution module, and the method comprises the steps that the task management module responds to a received first file conversion request, and performs file conversion on the first file; if yes, a first original file corresponding to the first file conversion request is confirmed, and the first original file is sent to the conversion execution module; the file conversion execution module obtains the first original file, converts the first original file into at least one file conversion file, and sends the at least one file conversion file to the task management module; and the task management module sends the at least one file conversion file.

Method for preparing cylohexanediol diglycidyl ether

The invention discloses a method for preparing cylohexanediol diglycidyl ether. The method comprises: generating cyclohexanediol through the hydration of cyclohexene oxide; synthesizing o-chlorohydrin ether through the ring-opening reaction of dehydrated cyclohexanediol and epichlorohydrin; reacting the o-chlorohydrin ether and alkali to synthesize 1,2-cylohexanediol diglycidyl ether crude products; and obtaining products by performing oil-water separation, washing and filtration on the crude products and distilling out light components, wherein catalysts for both hydration and ring-opening reaction are fluoboric acid, and the mol ratio of cyclohexene oxide to water to fluoboric acid to epichlorohydrin is 1:5-50:0.002-0.1:1.8-2.5. The method has the advantages of taking fluoboric acid as the catalysts for both hydration and ring-opening reaction, realizing the organic unity of the catalysts in a two-step process, reducing energy consumption, shortening process time, avoiding large amounts ...

Glycidol ether containing cyclohexyl binary ether alcohol and preparation method thereof

The invention relates to glycidol ether containing cyclohexyl binary ether alcohol and a preparation method thereof. The glycidol ether containing the cyclohexyl ether alcohol binary ether alcohol contains two active epoxy groups and a cyclohexyl and multi-group ether bond structure, has the performance of improving the fluidity of resin, can also endow cured epoxy resin with good weather resistance and toughness and has small influence on the other mechanical performances of the cured epoxy resin. The preparation method comprises the following steps: synthesizing polyether alcohol by taking aliphatic diol and epoxy cyclohexane as raw materials; or synthesizing polyether by taking cyclohexanediol and aliphatic epoxide as raw materials; and further synthesizing the glycidol ether. The glycidol ether containing the cyclohexyl binary ether alcohol is mainly used as a reactive diluent in the fields of epoxy resin paint, adhesive and the like.

Nano fluid heat conductivity tester

Method for preparing 1,2-diol compound by using catalytic hydration of epoxide

A method for preparing 1,2-diol compound by using catalytic hydration of epoxide comprises the following steps: adding water and fluoboric acid in a reactor, setting the temperature at 10-99 DEG C, and then adding epoxide in the reactor, wherein the total reaction time is 0.2-5h, and mole ratio of the epoxide, the water and the fluoboric acid is 1:1.5-35:0.00001-0.001. In the invention, the selectivity is high and the separation of the product is simple.