Polyacetylene containing benzophenanthrene disk-like mesogens on side chain and preparation method thereof

The invention discloses polyacetylene containing benzophenanthrene disk-like mesogens on a side chain. A repetitive structure unit of the polyacetylene is as follows, in the formula, R represents linear alkyl benzene with 4 to 9 carbon atoms; m is an integer between 2 and 10; and the weight-average molecular weight is between 100,000 and 550,000. The invention also discloses a preparation method for the polyacetylene. A pi-pi conjugated structure formed by double bond on a benzene ring and conjugated alkenes double bond on the polyacetylene can greatly improve the degree of polymerization, sothe polyacetylene has better film forming performance; through Heat weightlessness analysis tests, the polyacetylene also has high decomposition temperature and good solubility; moreover, the reaction conditions are mild and the operation is easy.

Screening equipment and method for improving powder purity

The invention discloses screening equipment and method for improving powder purity, and the method comprises the following steps: step S1, soaking and drying, step S2, feeding, step S3, grinding, step S4, multi-stage screening, and step S5, collecting: S1, firstly preparing alloy powder, putting the alloy powder into an organic solution, dissolving part of soluble impurities in the alloy powder, and after the dissolving is finished, adding the soluble impurities into the organic solution, so that the alloy powder is obtained; the alloy powder is dried; the alloy powder grinding device has the beneficial effects that an integrated structure is adopted in the technical scheme, alloy powder is automatically ground through the powder grinding structure, then caking in the alloy powder can be removed, in cooperation with an anti-blocking structure, the situation that the grinding effect is affected due to the blocking situation in the grinding process can be prevented, and after grinding is ...

Chemical solution preparation method for molybdate light-emitting film

A chemical solvent preparation method of molybdate luminescent film belongs to the preparation methods of molybdate luminescent film. The steps are that: a) the pre-treatment of substrates---metal molybdenum film with the purity of 99.9 percent is degreased by acetone and kibbled with metallographic sand paper. Then the mixed acid is added to erode the film for 1-3 minutes. Next the ultrasonic cleaning is made in deionized water. The substrates with adsorptive activity as well as smooth surface are obtained. b) The deposition of the film--- 100.0ml A(OH)₂ and 1-10ml H₂O₂ solution or 1-10ml NaClO solution are added into a sealed reaction tank, wherein, A is Ca, Sr or Ba. The pre-treated substrates are suspended in the solution with nitrogen inflating into for 20 minutes. And then the reaction tank is sealed. The reaction lasts for 30-200 hours under 20-40 DEG C. Then the substrates with films are put out and immersed and dried in warm water. In the end the ...

Semiconductor nano photoelectric detector, and machining apparatus and machining method thereof

The invention brings forward a semiconductor nano photoelectric detector, and a machining apparatus and machining method thereof. A nano wire photoelectric detector manufacturing technology suitable for industrial production is achieved in a way that nano wire materials are adhered to a photoelectric detector in a liquid medium. The machining apparatus of a semiconductor nano photoelectric detector includes a liquid container, a clamping adding-drop-by-drop device, a stirring device, a first drive device and a second drive device. The clamping adding-drop-by-drop device is driven by the first drive device to enter or leave from the liquid container. The clamping adding-drop-by-drop device includes at least one photoelectric detector clamping position and at least one nano wire adding-drop-by-drop opening. The stirring device is arranged in the liquid container, and is driven by the second drive device to enable liquid in the liquid container to rotate. People only need to additionally mount ...

Beverage made of natural plant for improing sight

The invented beverage consists of stem of noble dendrobium, cassia seed, chrysan themum, seed of feather cockscomb, fruit of medicinal cornel, stevia vebaudiana, licorice root, etc. 16 kinds of raw material and is made up in accordance with a specific proportion. The main actions are improving acuity of vision, quenching one's thirst, etc., it can make one have delicate features and rosy checks, and build up health, meanwhile it is a kind of drink for diabetic.

Physical layer and data processing method

The invention discloses a physical layer and a signal processing method for clock domain transmission of quarter-rate data, in an embodiment of the invention, a plurality of sampling circuits process the quarter-rate data by a first clock signal, a second clock signal and a third clock signal, and a training mechanism is utilized to align the phases of the clock signals, so that the clock signals have better time sequence margin.

Ultra-high-speed airflow spraying mechanism of gas atomization powder manufacturing equipment and using method of ultra-high-speed airflow spraying mechanism

The invention discloses an ultra-high-speed airflow ejection mechanism of gas atomization powder making equipment and a use method of the ultra-high-speed airflow ejection mechanism. According to the airflow ejection mechanism, a gas slow flow pipe, a gas transition pipe and a gas expansion pipe are matched with one another to form a Laval pipe to increase the airflow velocity, and the particle size of powder particles formed through crushing can be more uniform. The device is characterized in that the device is composed of a gas inlet pipe, a gas slow flow pipe, a gas transition pipe, a gas expansion pipe, a spiral cooling pipe, a gas atomization barrel, a flow guide pipe and a powder discharging port, the flow guide pipe is arranged on the gas atomization barrel, the end of the flow guide pipe penetrates through one end of the gas atomization barrel and extends into the gas atomization barrel, and the gas atomization barrel is of a cylindrical structure; the diameter of the gas atomization ...

Metal powder vibration screening and collecting device and using method thereof

The invention relates to a metal powder vibratory screening and collecting device and a using method thereof, and discloses a device which intermittently blows air into an inner-layer screening barrel through an air inlet hose, blows accumulated metal powder to a plurality of screening plates and is matched with the inner-layer screening barrel through a vibration motor to perform vibratory screening on the metal powder with different particle sizes. The screening plate can be prevented from being completely blocked, and meanwhile the screening time is shortened. The device is characterized in that the device is composed of a main body assembly and a screening assembly, the main body assembly is composed of an outer-layer collecting barrel, a reinforcing spring, a supporting spring and an operation door, a mounting groove is formed in the side wall of the outer-layer collecting barrel, the operation door is detachably arranged in the mounting groove, and the outer-layer collecting barrel ...

Benzophenanthrene discotic liquid crystal polymer and preparation method thereof

The invention relates to a benzophenanthrene discotic liquid crystal polymer and a preparation method thereof. The liquid crystal polymer is characterized in that two, three, four or seven benzophenanthrene unimolecules are connected by adopting one, two, three or six bridge chains containing 1,4-disubstituted-1,2,3-triazole five-membered rings to correspondingly form discotic benzophenanthrene dipolymer, tripolymer, tetrame or heptamer compounds. In the bridge chains of the polymer compounds, the 1,4-disubstituted-1,2,3-triazole five-membered ring is an electron-deficient group, and a benzophenanthrene rigid core is an electron-enriched group, thereby forming a charge transfer compound which can obtain high charge transfer speed, presents a liquid crystal action which is different from the common unimolecule discotic liquid crystals, such as tending to presenting a vitrification action, is easy to present room-temperature liquid crystal and has wider temperature application range, and ...

METHOD TO SUBSTITUTE SILVER IN THE ALKALI EVAPORATOR

METHOD TO SUBSTITUTE SILVER IN THE ALKALI EVAPORATOR

Polyacetylene containing benzophenanthrene disk-like mesogens on side chain and preparation method thereof

The invention discloses polyacetylene containing benzophenanthrene disk-like mesogens on a side chain. A repetitive structure unit of the polyacetylene is as follows, in the formula, R represents linear alkyl benzene with 4 to 9 carbon atoms; m is an integer between 2 and 10; and the weight-average molecular weight is between 100,000 and 550,000. The invention also discloses a preparation method for the polyacetylene. A pi-pi conjugated structure formed by double bond on a benzene ring and conjugated alkenes double bond on the polyacetylene can greatly improve the degree of polymerization, so the polyacetylene has better film forming performance; through Heat weightlessness analysis tests, the polyacetylene also has high decomposition temperature and good solubility; moreover, the reaction conditions are mild and the operation is easy.

Fragrant and beauty powder made from natural plant

Natural plant fragrant and beauty powder

This invention relates to a natural plant bodily fragrant cosmetic powder which is mainly made up by using 55 medicinal herbs such as chuanxiong rhizome, asarum herb, giant typhonium tuber, borneal, etc. according to a certain proportion. It is mainly used for health-care, bodily fragrance and beautifying, and makes human skin smooth, whole body full of fragrance and body enhancement.

Frequency division clock phase synchronization method, circuit and electronic device

The invention provides a method for performing frequency division clock phase synchronization in a multi-frequency division clock system, a related synchronous control circuit, a synchronous control sub-circuit and an electronic device. The method may include: performing a frequency division operation according to a source clock to generate a first frequency-divided clock and a second frequency-divided clock; performing phase relation detection on the first frequency division clock according to the second frequency division clock to generate a phase relation detection result signal; performing a logic operation on a first phase selection result output signal and the phase relation detection result signal to generate a second phase selection result output signal; and outputting one of the second frequency division clock and an inverted signal of the second frequency division clock according to the second phase selection result output signal for further use by a physical layer circuit.

Semi-fluorinated chain diphenyl rodlike liquid crystalline compounds and preparation method thereof

The invention discloses two semi-fluorinated chain diphenyl rodlike liquid crystalline compounds which are liquid crystalline materials and have the advantages of high temperature of clearing points, low viscosity, high resistivity and favorable optical stability and chemical stability. The invention also discloses a preparation method of the two semi-fluorinated chain diphenyl rodlike liquid crystalline compounds.

Chemical solution preparation method for molybdate light-emitting film

A chemical solvent preparation method of molybdate luminescent film belongs to the preparation methods of molybdate luminescent film. The steps are that: a) the pre-treatment of substrates---metal molybdenum film with the purity of 99.9 percent is degreased by acetone and kibbled with metallographic sand paper. Then the mixed acid is added to erode the film for 1-3 minutes. Next the ultrasonic cleaning is made in deionized water. The substrates with adsorptive activity as well as smooth surface are obtained. b) The deposition of the film--- 100.0ml A(OH)₂ and 1-10ml H₂O₂ solution or 1-10ml NaClO solution are added into a sealed reaction tank, wherein, A is Ca, Sr or Ba. The pre-treated substrates are suspended in the solution with nitrogen inflating into for 20 minutes. And then the reaction tank is sealed. The reaction lasts for 30-200 hours under 20-40 DEG C. Then the substrates with films are put out and immersed and dried in warm water. In the end the ...

Semi-fluorinated chain diphenyl rodlike liquid crystalline compounds and preparation method thereof

The invention discloses two semi-fluorinated chain diphenyl rodlike liquid crystalline compounds which are liquid crystalline materials and have the advantages of high temperature of clearing points, low viscosity, high resistivity and favorable optical stability and chemical stability. The invention also discloses a preparation method of the two semi-fluorinated chain diphenyl rodlike liquid crystalline compounds.