落地式人工增雨防雹火箭发射装置

落地式人工增雨防雹火箭发射装置

Rubber composition for tire sidewall, vulcanized rubber and preparation method and application of vulcanized rubber

The invention relates to the field of rubber, and discloses a rubber composition for a tire sidewall, vulcanized rubber as well as a preparation method and application of the vulcanized rubber. The rubber composition contains one or more of a rubber matrix, white carbon black, kaolin, a surface treating agent, an activating agent, an anti-aging agent, a softening agent, an anti-cracking agent, a tackifier, a vulcanizing agent, an accelerant and carbon black; wherein the rubber matrix contains butadiene rubber and/or natural rubber, the surface treating agent is silane-terminated polybutadiene, the number-average molecular weight Mn of the silane-terminated polybutadiene is 3000-4000, and the glass transition temperature Tg of the silane-terminated polybutadiene is less than or equal to-80 DEG C; the vulcanized rubber can further improve heat aging resistance and ultraviolet aging resistance on the premise of having basic mechanical properties and appearance.

落地式人工增雨防雹火箭发射装置

High borosilicate glass as well as preparation method and application thereof

The invention provides high borosilicate glass and a preparation method and application thereof.The high borosilicate glass is prepared from, by weight, 67-71 parts of SiO2, 18-25 parts of B2O3, 3-5 parts of ZnO, 2-4 parts of Na2O, 1-3 parts of Al2O3 and 0.1-0.5 part of Li2O, and the high borosilicate glass is obtained after the raw materials are mixed, melted, clarified, blown and annealed. According to the invention, by coordinating and controlling the dosage of each component in the raw materials, the obtained high borosilicate glass can be ensured to have good chemical stability, light transmission and sealing matching performance while meeting the thermal expansion coefficient, and can be suitable for sealing glass of a solar vacuum heat collecting tube; meanwhile, the melting temperature of the glass can be reduced and the production capacity is improved.

落地式人工增雨防雹火箭发射装置

Acetic acid-resistant rubber composition and vulcanized rubber as well as preparation method and application thereof

The invention relates to the field of rubber, and discloses an acetic acid-resistant rubber composition, vulcanized rubber and a preparation method and application thereof. The composition contains one or more of a rubber matrix, carbon black, layered silicate, polytetrafluoroethylene powder, paraffin oil, magnesium oxide, an activating agent, an anti-aging agent, softening resin, a vulcanizing agent and an accelerant. Wherein the rubber matrix is a mixture of ethylene propylene diene monomer and butyl rubber, the ethylene propylene diene monomer is a copolymer of ethylene, propylene and non-conjugated diene, the non-conjugated diene is ethylene-norbornene, and the content of the non-conjugated diene is 2.3-5.5 wt% based on the total weight of the ethylene propylene diene monomer. And the content of ethylene is 44-67 wt%. The vulcanized rubber has excellent mechanical properties and acetic acid medium resistance.

Method, system, medium and equipment for acquiring vehicle positioning absolute coordinates in cockpit domain

The invention discloses a method, a system, a medium and equipment for acquiring vehicle positioning absolute coordinates in a cabin domain. The method comprises the following steps: acquiring high-precision road map data, and acquiring attribute information of a lane where a target vehicle is located; defining the head point of the center line of the lane where the target vehicle is located as a reference point, and obtaining the offset of the target vehicle based on the reference point; according to the attribute information of the lane where the target vehicle is located, searching the latitude and longitude absolute coordinates of the reference point in the high-precision road map data; according to the latitude and longitude absolute coordinates of the reference point and the offset of the target vehicle based on the reference point, calculating the latitude and longitude absolute coordinates of the target vehicle; the problems that in the auxiliary intelligent driving process of the ...

Rendering method based on cockpit domain rendering engine, lane-level navigation method and system

The invention provides a rendering method based on a cabin domain rendering engine, and a lane-level navigation method and system, and the rendering method comprises the steps: obtaining high-precision map data collected by a map data collection vehicle, and outputting the high-precision map data as NDS data; according to the NDS data, PBF data is generated through an NDS data analysis module and a PBF data compiling tool integrated in the cabin domain, and the PBF data is provided for a cabin domain rendering engine for rendering high-precision map data, so that ID information of the same data elements of the rendered PBF data in the cabin domain is consistent with ID information of the same data elements of the NDS data in the intelligent driving domain. The method mainly solves the problems that in the auxiliary intelligent driving process of a vehicle, NDS data of an intelligent driving domain map engine and PBF data of a cabin domain rendering engine are different in source, so that ...

Rubber composition, vulcanized rubber and preparation method and application of vulcanized rubber

The invention relates to the field of vulcanized rubber, and discloses a rubber composition, vulcanized rubber and a preparation method and application thereof. The composition comprises a rubber matrix, carbon black, hollow carbon spheres, layered silicate, an activating agent, an anti-aging agent, a softening agent, tackifying resin, a vulcanizing agent and an accelerant, the rubber matrix is formed by compounding styrene-butadiene rubber and high vinyl polybutadiene rubber, the styrene content in the styrene-butadiene rubber is 30-55%, and the Mooney viscosity ML (1 + 4) at 100 DEG C is 40-80. The vulcanized rubber has excellent mechanical property, high damping factor and sound absorption coefficient.

Polyether-ether-ketone polymer preparation process and reaction equipment thereof

The invention discloses a polyether-ether-ketone polymer preparation process and reaction equipment thereof, and belongs to the technical field of high polymer material processing. The preparation process of the polyether-ether-ketone polymer comprises the following steps: S1, carrying out a polyether-ether-ketone polymerization reaction by using polyether-ether-ketone polymer reaction equipment, and extruding and discharging a mixed product generated after the polymerization reaction is finished by using the polyether-ether-ketone polymer reaction equipment; and S2, treating the reaction mixed product by special tabletting equipment. According to the polyether-ether-ketone polymer preparation process and the reaction equipment thereof, a reaction mixed product is subjected to primary extrusion before tabletting, so that the mixed product can be quickly molded, and convenience is provided for subsequent tabletting treatment; the polyether-ether-ketone polymer reaction equipment fully mixes ...

Modified styrene-butadiene rubber, rubber composition, vulcanized rubber and preparation method and application of vulcanized rubber

The invention relates to the field of rubber, and discloses modified styrene-butadiene rubber, a rubber composition, vulcanized rubber and a preparation method and application thereof. The modified styrene-butadiene rubber is prepared by mixing styrene-butadiene rubber and a sulfydryl modifier as shown in a formula (1) and performing in-situ grafting modification, and the grafting rate of the sulfydryl modifier as shown in the formula (1) is 0.4-4 mol% based on the total molar weight of an ethylene structural unit in the styrene-butadiene rubber; by adopting the modified styrene-butadiene rubber, the dispersion of the white carbon black in the modified styrene-butadiene rubber can be greatly improved, so that the tensile strength of the vulcanized rubber can be improved, heat generation can be reduced, and the wet skid resistance of the vulcanized rubber can be further improved. Wherein R is alkylene with 1 to 5 carbon atoms.

Eyepiece system based on prism beam combination

The invention discloses an eyepiece system based on prism beam combination, which comprises a low-light-level image source, an infrared image source, an infrared end lens, a low-light-level end lens, a prism assembly and a common lens group, and is characterized in that the common lens group comprises a common first lens and a common second lens; the low-light-level image source is located on one side of the prism assembly, and the low-light-level end lens is located between the low-light-level image source and the prism assembly; the infrared image source is located above the prism assembly, and the infrared end lens is located between the infrared image source and the prism assembly. The problem that a low-light image and an infrared image generated by a low-light night vision sighting telescope with an image intensifier as a core device cannot be fused is solved, the low-light image and the infrared image can be observed at the same time by adopting the eyepiece system, the target contour ...

Rubber composition for aerator diaphragm, vulcanized rubber as well as preparation method and application of vulcanized rubber

The invention relates to the field of rubber, and discloses a rubber composition for an aerator diaphragm, vulcanized rubber as well as a preparation method and application of the vulcanized rubber. The composition contains one or more of ethylene propylene diene monomer, carbon black, natural layered silicon-containing filler, paraffin oil, a dispersing agent, an activating agent, an antioxidant, a softening agent, a stabilizing agent, a vulcanizing agent and an accelerant. Wherein the ethylene propylene diene monomer is a copolymer of ethylene, propylene and non-conjugated diene, and the non-conjugated diene is ethylene-norbornene; on the basis of the total weight of the ethylene propylene diene monomer, the content of the non-conjugated diene is 2.3-10 wt%, and the content of the ethylene is 44-67 wt%. The vulcanized rubber has excellent mechanical properties, meets the requirements of the aerator diaphragm on aging resistance, hydrophilicity and durability, and has excellent processing ...

Rubber composition for tire sidewall, vulcanized rubber and preparation method and application of vulcanized rubber

The invention relates to the field of rubber, and discloses a rubber composition for a tire sidewall, vulcanized rubber as well as a preparation method and application of the vulcanized rubber. The rubber composition contains one or more of a rubber matrix, carbon black, lignin, a surface treating agent, an activating agent, an anti-aging agent, a softening agent, a tackifier, a vulcanizing agent and an accelerant; wherein the rubber matrix contains rare earth butadiene rubber and/or natural rubber, the surface treating agent is hydroxyl-terminated polybutadiene, the number-average molecular weight Mn of the hydroxyl-terminated polybutadiene is 2000-10000, and the hydroxyl value of the hydroxyl-terminated polybutadiene is 0.19-0.91 meq/g; the vulcanized rubber can have excellent comprehensive performance of improving strength, reducing rolling resistance and heat generation, improving dynamic fatigue, resisting aging and the like, so that the vulcanized rubber has the prospect of being ...

Isolating valve group structure of inert gas system of LNG (Liquefied Natural Gas) ship

The invention discloses an LNG (Liquefied Natural Gas) ship inert gas system isolating valve group structure which is characterized in that an isolating valve is arranged on each of a non-dangerous area pipeline, a first-area dangerous area pipeline and a zero-area dangerous area pipeline; the effects of double-channel isolation of the dangerous area and the non-dangerous area of the area 1, double-channel isolation of the dangerous area and the non-dangerous area of the area 0 and bidirectional isolation of the dangerous area of the area 1 and the dangerous area of the area 0 are achieved; and meanwhile, the valve is arranged near the junction point of the T-shaped pipeline, so that the operation convenience can be improved.

Vehicle door structure with blind compensation window and vehicle

The invention relates to a vehicle door structure with a blind compensation window and a vehicle, and belongs to the technical field of commercial vehicle doors, the vehicle door structure comprises a vehicle door body, and the vehicle door body is formed by covering a vehicle door metal plate and a vehicle door protection plate. The rope wheel type glass lifter is arranged in the automobile door body, a steel wire rope of the rope wheel type glass lifter is located on the periphery of the blind repairing window glass, the rope wheel type glass lifter is used for driving the automobile door glass to ascend and descend, the blind repairing window glass is arranged on the automobile door metal plate, and the automobile door metal plate is provided with an inner window hole used for observing the blind repairing window glass. Therefore, normal lifting of the vehicle door glass is not affected, and convenience of operation of the vehicle door glass and effectiveness of ventilation are guaranteed ...

Phase change packaging material, preparation method thereof and phase change heating film

The invention discloses a phase-change packaging material, a preparation method thereof and a phase-change heating film, the phase-change packaging material is obtained by coating a base material with a phase-change packaging coating liquid and drying the base material, the phase change packaging coating liquid is prepared from the following raw material components in parts by weight: 40 to 60 parts of epoxy resin, 3 to 5.5 parts of a curing agent, 0.05 to 0.2 part of an accelerant, 0.05 to 0.2 part of a coupling agent, 20 to 30 parts of oil absorption filler, 5 to 15 parts of heat conduction filler, 15 to 25 parts of a phase change material, 0.5 to 2 parts of a flame retardant and 40 to 100 parts of a solvent. The phase-change heating film provided by the invention can be used for packaging a metal heating film on one hand, has certain heat conduction and phase-change heat storage on the other hand, can absorb a part of heat to replace a part of a water cooling plate in the heat release ...

High-expansion-rate expansion adhesive tape and preparation method thereof

The invention discloses a high-expansion-rate expansion adhesive tape and a preparation method thereof. The expansion adhesive tape comprises a first base material layer, a first expansion adhesive layer, a second base material layer and a second expansion adhesive layer which are sequentially stacked. The high-expansion-rate expansion adhesive tape disclosed by the invention adopts a secondary expansion structure, so that the adhesive tape not only can be expanded under heating, but also can be swelled in electrolyte, and the expansion effect is exerted to the greatest extent; thermal expansion microspheres added in the first expansion glue layer are polymer particles with core-shell structures, when the microspheres are heated, an internal foaming agent is vaporized or decomposed to generate pressure, meanwhile, a shell layer is softened and expanded, a thermoplastic polymer shell and gas pressure generated due to high temperature are mutually balanced, and after cooling, the polymer ...