10 results about "Adipic Dihydrazide" patented technology

The application discloses a high-elongation-strength anti-fatigue TPU blended material and a preparation method thereof, and relates to the field of polymer materials. In the preparation of the high-elongation-strength anti-fatigue TPU blended material, phosphorus chloride is reacted with 4'-vinyl-[1,1'-biphenyl]-4-alcohol and p-phenylphenol to obtain a phosphite antioxidant; nano-silicon dioxide is sequentially reacted with trimethoxysilane and the phosphite antioxidant to obtain modified silicon dioxide; a modified polyurethane elastomer is prepared by reacting hydroxyl-terminated polysiloxane, 1,4-butanediol, isophorone diisocyanate and adipic dihydrazide; polyether amide elastomer and the modified polyurethane elastomer are mixed, mixed with a compatilizer, modified silicon dioxide and antioxidant 1010, dried, mechanically mixed, and melt-blended to obtain the high-elongation-strength anti-fatigue TPU blended material. The high-elongation-strength anti-fatigue TPU blended material prepared by the application has the abilities of self-repairing, durability and flame resistance.

This invention discloses a low-reflectivity ink and its preparation method, belonging to the field of printing ink technology. The low-reflectivity ink of this invention effectively solves the problem of existing inks' difficulty in simultaneously achieving low reflectivity, high adhesion, and high light-blocking performance by selecting polyester resin, adipic acid dihydrazide modifier, and molybdenum nitride-carbon black composite filler. The polyester resin, as the base resin, has good film-forming properties and compatibility; its active groups can undergo cross-linking reactions with adipic acid dihydrazide, improving the density and adhesion of the film layer. The nano-sized carbon black in the composite filler has excellent light absorption properties, effectively reducing ink reflectivity. Micron-sized molybdenum nitride, as the framework particle, enhances the mechanical strength and scratch resistance of the film layer, forming a complementary light-absorbing structure with the nano-sized carbon black, further improving light-blocking and mechanical properties, while also improving the ink's lightfastness and preventing coating deterioration after long-term use.

This invention belongs to the technical field of adipic acid dihydrazide production equipment, specifically a crystallization, separation, and drying device for adipic acid dihydrazide. It includes a base, a support fixedly connected to the left side of the top of the base, a drying mechanism fixedly connected to the right side of the top of the base, a stirring tank fixedly connected to the inner side of the support, a stirring mechanism fixedly connected to the top of the stirring tank, and a crystallization cylinder fixedly connected to the lower part of the stirring tank. During crystallization, the stirring motor is activated, causing the rotating shaft to drive the spiral blades to slowly rotate clockwise, scraping away the crystals on the inner wall of the cylinder. This prevents the crystals from agglomerating into large clumps, ensuring more uniform crystal particles. Furthermore, the absence of crystals adhering to the inner wall of the cylinder improves heat exchange efficiency, accelerates the crystallization speed, and ensures that adipic acid dihydrazide can fully crystallize.

The application discloses a preparation method of a high-dissipation boron-containing thermoplastic silicon elastomer with a wide temperature range, and the preparation of the material comprises the following raw materials: polyurea prepolymer 40-80 parts, liquid short-chain polyether amine 10-40 parts and photoinitiator TPO 0.1-5 parts. The multiple hydrogen bonds and side chain hydroxyl groups are introduced by chain extension of 1,3-diamino-2-propanol through adipic acid dihydrazide, and the wide-range adjustable mechanical properties are realized by synergistic control, the interlayer adhesion and isotropy are improved, the printed parts have recyclability, and the method is suitable for photocuring 3D printing forming of high-performance elastomer and plastic parts.

This invention relates to the field of polymer fine chemical materials and the synthesis technology of special functional waterborne coatings, specifically to an aldehyde-capturing self-healing waterborne coating and its preparation method. The invention discloses an aldehyde-capturing self-healing waterborne coating and its preparation method. This coating uses a side-chain carboxylated ketone-containing waterborne polyurethane-acrylate composite emulsion as the core film-forming material, forming dynamic hydrazone crosslinks with adipic acid dihydrazide, and introducing an epoxy-amine permanent crosslinking network. The side-chain carboxyl groups are derived from maleic anhydride grafted and undergo ring-opening transformation upon contact with water, and are covalently fixed to the polymer side chains, preventing the migration of small molecule acids and ensuring coating storage stability. After the coating cures, environmental moisture triggers the dissociation of side-chain carboxyl groups, releasing protons and catalyzing the dynamic exchange of hydrazone bonds, achieving room-temperature self-healing. Excess hydrazone groups in the coating capture aldehyde pollutants, and the newly generated hydrazone bonds introduce polar groups and crosslinking sites, enhancing network stability.

This invention discloses a surface-coated modified ultra-high molecular weight polyethylene fiber, its preparation method, preparation system, and applications. This method deeply integrates the fundamental mechanism of "surface chemical grafting" to strengthen the interface with an "online continuous integrated" industrial production model, solving the core bottleneck of large-scale preparation of high-performance modified UHMWPE fibers. The preparation method of this invention includes the following steps: 1) preparing a water-based modification solution; 2) immersing the fiber bundle in the water-based modification solution for 5-10 seconds; 3) passing it through a first heat-setting oven at 120-130℃ for 60-180 seconds; 4) impregnating the fiber in an amination treatment tank containing an aqueous solution of adipic acid dihydrazide; 5) passing the impregnated fiber through a second heat-setting oven at 80-100℃ for 5-8 minutes; 6) collecting the surface-crosslinked modified ultra-high molecular weight polyethylene fiber online.

The present application belongs to the technical field of mortar composition, and particularly relates to a clay stratum slurry shield mortar material and a preparation method thereof. The mortar material is prepared from the following components: 200 parts of water, 3-6 parts of bentonite, 0.06-0.15 parts of polyacrylamide, 0.04-0.08 parts of polyethylene glycol-b-poly caprolactone, 0.03-0.06 parts of PHBV, 0.15-0.3 parts of attapulgite, 0.15-0.3 parts of sodium carbonate, 0.01-0.02 parts of adipic acid dihydrazide, 0.015-0.03 parts of aluminum sulfate and 0.01-0.03 parts of sodium sulfate. The preparation method is to blend hydrolyzed polyacrylamide solution, aluminum sulfate solution, sodium sulfate solution and matrix suspension liquid, homogenize and maintain to obtain the mortar material. The improved mortar material is used in clay stratum slurry shield, and has superior performance in the aspects of excavation face support, stratum permeation control and environmental protection.

The application belongs to the technical field of polymer materials, and particularly relates to a kind of super low melting point polyester chips and a preparation method thereof. The application uses terephthalic acid and adipic acid as main acid source, and is matched with 1,4-butanediol, modified polyether, dimethyl isophthalate, and the melting point of the polyester chips prepared by multiple modification is reduced to the super low interval of 100-120 DEG C, which is suitable for the fields of hot melt adhesive, non-woven fabric, hot melt wire, etc.; the modified polyether is maleic anhydride grafted polyethylene glycol-polypropylene glycol block polyether, which not only reduces the melting point of the polyester chips, but also improves the toughness of the polyester chips; a chain extender composed of adipic dihydrazide and triphenylmethane triisocyanate is added in the later stage of polycondensation, which realizes the slight crosslinking of molecular chain and effectively improves the toughness of the polyester chips.

The application discloses a self-repairable polyurethane, modified asphalt, a preparation method and application, and belongs to the technical field of high polymer materials. The preparation method of the self-repairable polyurethane comprises the following steps: (1) mixing and reacting polytetrahydrofuran and isophorone diisocyanate in the presence of a catalyst to obtain a prepolymer; (2) mixing the prepolymer and a chain extender, and extending the chain to obtain the self-repairable polyurethane, wherein the chain extender comprises adipic acid dihydrazide and bis(2-aminophenyl)disulfide; the molar ratio of the isophorone diisocyanate to the polytetrahydrofuran is (2-3):1; and the molar ratio of the bis(2-aminophenyl)disulfide to the adipic acid dihydrazide is (1-3):1. The polyurethane is added into asphalt to obtain modified asphalt. The self-repairable polyurethane modified asphalt has excellent low-temperature and high-temperature performance, toughness, active healing capacity and good regeneration performance.

Biomass-derived PHA oil-repellent and moisture-permeable coating, coated paper and preparation method, relate to the field of paper and paperboard manufacturing and processing. The coating contains biomass-derived polyhydroxyalkanoate, maltodextrin grafted adipic acid dihydrazide, chitosan-coated SiO2 nanoparticles, tributyl citrate and deionized water; the coated paper comprises a substrate paper pretreated by a biological enzyme and a double-layer coating formed by the coating; the preparation method comprises the steps of modified PHA emulsion preparation, substrate paper pretreatment, double-layer coating and gradient drying. The reagents used are environmentally friendly, and the product has excellent oil-repellent and moisture-permeable properties.