3386 results about "Acrylonitrile" patented technology

The invention discloses an adhesive, lithium battery negative electrode slurry, a lithium battery negative electrode and a lithium battery. The adhesive comprises an acrylic copolymer; polymeric monomers of the acrylic copolymer comprise an acrylic monomer, an acrylonitrile monomer, an acrylamide monomer and a selective acrylate monomer; the preparation method of the acrylic acid copolymer comprises the following steps: mixing an acrylic acid monomer with water, adding alkali for neutralization until the neutralization degree is greater than or equal to 50% and less than 100%, then adding an acrylamide monomer and an acrylonitrile monomer, selectively adding an acrylic ester monomer, heating to a reaction temperature in a protective atmosphere, and carrying out a reaction for 2-4 hours to obtain the acrylic acid copolymer. Adding an initiator to initiate an aqueous solution polymerization reaction to generate an acrylic copolymer; practice shows that the binder has higher molecular weight and better electrical performance, when the binder is applied to the negative electrode of the lithium battery, excellent binding power and battery cycle performance can be obtained while the use amount of the binder is reduced, and the binder can be used for preparing the lithium battery, related electrodes and the like.

The invention provides a novel acrylonitrile catalyst and a preparation method thereof. The novel acrylonitrile catalyst is prepared from the following raw materials: mixed salt, an active component, silica sol, a rare earth precursor, a carrier and a cosolvent, by introducing the cosolvent and optimizing the carrier structure, the dispersity of the rare earth precursor is improved, the production process is optimized, the doping efficiency of the rare earth precursor is remarkably improved, the activity, selectivity and stability of the novel acrylonitrile catalyst are improved, generation of by-products CO, CO2, acrolein and acrylic acid during acrylonitrile production can be reduced, and industrial efficient preparation is achieved.

The invention relates to the technical field of fabrics, and discloses a preparation method of an anti-wrinkle comfortable fabric, which comprises the following steps: by taking alkyl diamine, acrylonitrile, gamma-chloropropyl methyl dimethoxy silane and the like as raw materials, carrying out addition reaction, hydrolysis reaction and quaternization reaction to obtain polycarboxyl disilane gemini quaternary ammonium salt; octamethylcyclotetrasiloxane, polycarboxyl disilane gemini quaternary ammonium salt and the like are used as raw materials, quaternary ammonium salt modified polysiloxane is obtained through base catalysis copolymerization, then the quaternary ammonium salt modified polysiloxane is emulsified and prepared into finishing liquid, pure cotton fabric is soaked in the finishing liquid, and the anti-wrinkle comfortable fabric is obtained through two-dipping and two-rolling finishing. The crease resistance of the fabric is improved by utilizing a large number of amino groups and carboxyl groups contained in the finishing liquid, and the antibacterial property of the fabric is improved by utilizing a quaternary ammonium salt structure contained in the finishing liquid. Experiments prove that the prepared fabric has good crease-resistant comfort performance and antibacterial performance.

The invention relates to the technical field of organic synthesis, and discloses a preparation method of bromo-pyrrole nitrile. The method comprises the following steps: (1) mixing p-chlorophenylglycine, acetonitrile, trifluoroacetic acid and a catalyst, then dropwise adding acyl chloride and carrying out acylation reaction, and after the reaction is completed, purging with an inert gas; (2) under the inert gas, mixing the mixture obtained in the step (1) with inorganic salt, then dropwise adding 2-chloroacrylonitrile, carrying out cyclization reaction, and separating a liquid phase from the obtained mixture; and (3) under the inert gas, mixing the liquid phase obtained in the step (2), hydrobromic acid and hydrogen peroxide, carrying out a bromination reaction, then extracting with acetonitrile to obtain an acetonitrile layer, then removing the acetonitrile, and then carrying out cooling crystallization to obtain the bromo-pyrrolenitrile. According to the technical scheme, the reaction yield is high, different solvents do not need to be frequently replaced, and the solvents can be recycled.

The invention provides a thick electrode and a preparation method thereof, and a lithium battery, the thick electrode comprises a current collector and an active coating, the active coating comprises an active material, a conductive agent, a dispersant and a composite binder, the composite binder comprises a binder A and a binder B, the binder A comprises at least two of sodium carboxymethyl cellulose, a polyacrylic acid binder and an acrylonitrile multipolymer, and the binder B comprises at least one of polytetrafluoroethylene and butadiene styrene rubber. The thick electrode has the characteristics of stable structure, good conductivity and high ion transmission efficiency, and the cycling stability of the battery using the thick electrode can be improved.

The invention discloses a lithium battery polymer solid electrolyte membrane capable of rapidly polymerizing at room temperature as well as a preparation method and application thereof, and belongs to the field of polymer electrolyte. The preparation method of the lithium battery polymer solid electrolyte membrane provided by the invention comprises the following steps: uniformly mixing polyethylene glycol methyl ether methacrylate and acrylonitrile according to a preset proportion to obtain a blended solution; sequentially adding lithium bis (trifluoromethanesulfonimide), divinylbenzene and benzoin diethyl ether into the blended solution, and uniformly mixing to obtain a precursor solution; and coating the precursor solution, and carrying out ultraviolet curing to obtain the lithium battery polymer solid electrolyte membrane. According to the lithium battery polymer solid electrolyte membrane provided by the invention, the voltage withstanding characteristic and the high ion conduction performance of the polymer electrolyte can be simultaneously improved, and the lithium battery polymer solid electrolyte membrane has a great gain on battery circulation and stability.

The invention relates to a flexible aqueous binder for a lithium battery negative electrode and a preparation method thereof. The preparation method comprises the following steps: firstly, preparing a flexible polyurethane prepolymer containing vinyl by taking hydroxyl-terminated polybutadiene, isocyanate and hydroxyl acrylate as main raw materials; vinyl-containing compounds such as water-soluble acrylic acid (salt) or acrylamide, oil-soluble acrylic ester or acrylonitrile and the like are used as monomers and are combined with a flexible polyurethane prepolymer to prepare the negative water-based binder with flexible cross-linking points through free radical polymerization. The aqueous binder prepared by the technical method provided by the invention can realize point-to-point and point-to-line bonding modes with a pole piece active substance on a microstructure, so that the bonding strength of the active layer material and a copper foil is improved on the premise of not influencing the electrolyte resistance of the binder; and the flexibility of the negative pole piece and the subsequent processing stability are obviously improved.

The invention provides composite positive electrode slurry, a positive electrode and a preparation method thereof, and relates to the field of lithium batteries. The solid content of the slurry is 40-60wt%, and the slurry comprises the following raw materials in parts by weight: 1-5 parts of a binder, 2-4 parts of a conductive agent, 100 parts of a blended positive electrode active material and the balance of a solvent; the binder comprises hydrogenated butadiene-acrylonitrile rubber emulsion, and the mass fraction of the hydrogenated butadiene-acrylonitrile rubber emulsion combined with acrylonitrile is 10-50%; the blending type positive electrode active material comprises the following components in percentage by mass: 10-90% of lithium manganese iron phosphate and 10-90% of high-nickel ternary layered oxide. The positive electrode comprises an aluminum foil current collector and composite positive electrode slurry, and the composite positive electrode slurry is coated on the surface of the aluminum foil current collector. According to the present invention, the positive electrode of the positive electrode slurry composed of the HNBR binder, the conductive agent and the solvent is combined with the blending type positive electrode active material composed of the lithium manganese iron phosphate and the high-nickel ternary layered oxide, and the positive electrode is applied to the lithium ion secondary battery, and the battery has high energy density and high-voltage cycle stability.

The invention provides super-strong barrier packaging paper and a preparation method thereof, relates to the field of high-barrier packaging paper, and aims to solve the problems that the barrier property of a traditional packaging material is reduced and the mechanical property is insufficient in a high-humidity environment. The packaging paper is composed of a coating barrier layer, a transparent film layer and a body paper base layer, and is prepared through a special process, so that the transmittance of oxygen and water vapor is remarkably reduced, and the shelf life of packaged contents is effectively prolonged. The preparation method comprises the following steps: mixing wood pulp fibers with a citric acid hydration solution, adding materials such as cationic starch to form fiber slurry, and drying to obtain the raw paper base layer; mixing and extruding acrylonitrile copolymer and other materials to form a transparent film layer; materials such as lignin and a citric acid hydration solution are mixed to form cross-linked slurry, the cross-linked slurry is mixed with a polymer solution to obtain a cross-linked coating, the raw paper base layer is coated with the cross-linked coating, the cross-linked coating is dried and then compounded with the transparent film layer, and the packaging paper has excellent barrier performance and mechanical performance and is particularly suitable for being used in areas with large temperature and humidity changes.

The invention discloses a preparation method of super-drafted carbon fibers, carbon fibers and application, and relates to the technical field of inorganic materials. The method comprises the following steps: preparing a spinning solution containing 10-40wt% of polyacrylonitrile; 2, 4, 6-triaminopyrimidine and barbituric acid are added into the spinning solution, the total amount of 2, 4, 6-triaminopyrimidine and barbituric acid accounts for 1-20 wt% of polyacrylonitrile, and a spinning solution is obtained; carrying out dry spray preforming on the spinning stock solution, then putting the spinning stock solution into a coagulating bath solution at 0-10 DEG C, and carrying out low-temperature coagulating bath treatment at a draw ratio of 1-10 to prepare nascent fibers; and preparing the nascent fiber into a precursor, and preparing the precursor into the carbon fiber through pre-oxidation and carbonization processes. By adding the supramolecular gel accelerator, the spinning stock solution can be rapidly gelated in a coagulating bath, and then high-multiple drafting can be applied to nascent fibers. The internal graphite structure of the carbon fiber prepared by the super-drafting gel spinning technology is perfect, the orientation is good, the defects are reduced, and the fiber strength is improved.

The invention relates to the field of batteries, and discloses electrode slurry, a preparation method thereof, an electrode plate, a battery and an electric device. The electrode slurry comprises an electrode active material, a conductive agent, a binder, a plasticizer and a solvent, the binder comprises CMC (Carboxymethyl Cellulose), SBR (Styrene Butadiene Rubber) and a water-based binder, the water-based binder is an acrylic copolymer binder, and the SBR is a styrene, butadiene and acrylonitrile copolymer binder. The CMC, the SBR and the specific water-based copolymer binder are combined and applied to the electrode slurry, through matching with other components such as an active material and the like, the processing performance of the electrode slurry can be remarkably improved, for example, smooth sieving of the slurry, improvement of binding power, reduction of pole piece rebound and the like can be achieved, and meanwhile compared with slurry adopting a commercial binder, the service life of the electrode slurry is prolonged, and the service life of the electrode slurry is prolonged. And the long cycle performance of the battery can be improved, and the requirement of a high-performance battery can be further met.

The invention relates to a wave-absorbing and vibration-reducing method for dynamic disturbance of an asymmetric high-stress tunnel, which belongs to the technical field of tunnel excavation, and specifically comprises the following steps: step 1, determining the position, range and depth of an asymmetric stress concentration area or a rockburst potential risk area behind a high-stress tunnel face, and determining the position, number and depth of grouting holes; 2, preparing and grouting a wave-absorbing material, and solidifying the wave-absorbing material, wherein the wave-absorbing material comprises the following components: cement, water, a foaming agent, polyacrylonitrile fiber and rubber powder; thirdly, monitoring holes are drilled in the middle and the two ends of the wave-absorbing grouting area, and a vibration sensor is placed in each monitoring hole; and 4, after the vibration sensor monitors that the high-energy disturbance stress wave is transmitted, obtaining an amplitude value through the waveform of the disturbance wave to obtain the main frequency of the disturbance wave. The specific position of wave-absorbing grouting is provided for a rockburst risk area, and the disturbance wave monitoring method provided by the invention can realize disturbance wave attenuation effect evaluation for various disturbance waves.

The present disclosure relates to the recycling of acrylonitrile butadiene styrene (ABS) waste. The present disclosure relates to methods for recycling ABS waste. For example, the present disclosure relates to methods of recycling ABS waste by recovering styrene acrylonitrile polymer (SAN), optionally by molecular weight (MW). The present disclosure relates to a recycled SAN obtained from ABS waste and articles comprising the recycled SAN.

The invention provides a high-temperature thermal expansion microsphere with rapid foaming response and a preparation method of the high-temperature thermal expansion microsphere. The high-temperature thermal expansion microsphere comprises an olefinic unsaturated monomer, the olefinic unsaturated monomers comprise the following components in percentage by weight: 40 to 60 percent of acrylonitrile monomers, 10 to 20 percent of acrylic acid monomers, 10 to 20 percent of acrylamide monomers and 5 to 30 percent of cage type polysilsesquioxane monomers containing double-bond monofunctional groups; the double-bond monofunctional polyhedral oligomeric silsesquioxane monomer is used for participating in polymerization to form a microsphere shell. The foaming response speed of the microspheres can be remarkably improved, and the microspheres have high foam breaking temperature and high expansion performance.

The invention discloses a flame-retardant ABS (Acrylonitrile Butadiene Styrene) composition as well as a preparation method and application thereof, and relates to the technical field of high polymer materials. The flame-retardant ABS composition provided by the invention comprises the following components in parts by mass: 50-80 parts of ABS resin; 8 to 12 parts of styrene-acrylonitrile copolymer; 3 to 5 parts of styrene-acrylonitrile-maleic anhydride terpolymer; 2 to 6 parts of a fluorine-containing maleimide copolymer; 5 to 15 parts of graphite nanosheet modified high rubber powder; 12 to 18 parts of brominated flame retardant; 3-7 parts of a phosphorus-based flame retardant; 0.1-1 part of a processing aid; the phosphorus-based flame retardant is prepared from the following components in parts by mass: 80 to 95 parts of diethyl phosphinate; 0.3 to 3 parts of ethyl butyl phosphinate; 0.1 to 2 parts of ethyl phosphonate; and 5 to 20 parts of melamine polyphosphate. The flame-retardant ABS composition prepared by the invention is good in flame retardant property, good in welding strength and low in cost.

The invention relates to the technical field of polyester resin, in particular to acrylic resin for a water-blocking film and a preparation method of the acrylic resin. The acrylic resin is a (styrene-acrylonitrile)-b-(flexible acrylic acid-functional monomer)-c-(styrene-acrylonitrile-silane coupling agent) block polymer; the block polymer comprises the following components in parts by mass: 20-70 parts of a flexible acrylic monomer; 5 to 25 parts of acrylonitrile; 20 to 50 parts of styrene; 1-7 parts of a silane coupling agent; 2-10 parts of a functional monomer, wherein the functional monomer is used for carrying out a cross-linking reaction with the curing agent; the (styrene-acrylonitrile)-b-(flexible acrylic acid-functional monomer)-c-(styrene-acrylonitrile-silane coupling agent) triblock polymer prepared in the invention has good heat resistance and certain elasticity, is acrylic resin with good binding force with a water-blocking coating, and is used for a polymer protective layer.

The invention provides a thermoplastic resin composition as well as a preparation method and application thereof. The thermoplastic resin composition is prepared from the following components in parts by weight: 10 to 40 parts of acrylonitrile-butadiene-styrene resin material, 30 to 70 parts of polymethyl methacrylate, 1 to 10 parts of modified hollow ceramic microbeads and 1 to 20 parts of toughening agent, the modified hollow ceramic microbeads comprise hollow ceramic microbeads modified by a coupling agent and stearate. The thermoplastic resin composition disclosed by the invention has the advantages of excellent wear resistance, good sound insulation effect and high surface hardness and impact strength.

The invention relates to the technical field of cables, and provides a tensile new energy charging pile cable which comprises a conductor, an insulating layer, a shielding layer and a sheath layer which are sequentially arranged from inside to outside. The sheath layer comprises the following components in parts by weight: 60-70 parts of chlorinated polyethylene, 15-20 parts of polyisoprene, 5-10 parts of an ethylene-methyl methacrylate copolymer, 8-18 parts of an acrylonitrile-butadiene-styrene copolymer, 20-30 parts of modified hydroxyapatite, 1-5 parts of a lubricant, 3-6 parts of a plasticizer, 30-40 parts of a flame retardant and 1-3 parts of an antioxidant; the raw materials of the modified hydroxyapatite comprise hydroxyapatite and a modifier; the modifier comprises maleic acid-acrylic acid copolymer sodium salt; the weight ratio of the hydroxyapatite to the modifier is 45: (1-7). According to the technical scheme, the problem that the cable sheath layer of the new energy charging pile is poor in tensile property and corrosion resistance in the prior art is solved.

A lithium ion gel state electrolyte, a lithium ion battery and a preparation method therefor. The lithium ion gel state electrolyte comprises polymer monomers, an organic solvent, a lithium salt, an additive and an initiator, the polymer monomers at least comprising 1,3,5-triallyl isocyanurate and acrylonitrile, and the additive at least comprising FEC; the 1,3,5-triallyl isocyanurate accounts for 0.1-2% of the total mass of the lithium ion gel state electrolyte, and the acrylonitrile accounts for 2.5-7.5% of the total mass of the lithium ion gel state electrolyte. The synergistic effect of the various monomers and the additive of the gel electrolyte can achieve both the electrode / electrolyte interface stability and the high-temperature stability of lithium batteries, thus improving the use safety and the high-temperature storage capacity of batteries while optimizing the electrochemical stability of electrolyte / electrode interfaces.

The invention provides a polyurethane waterproof coating, a preparation method and a waterproof product. The polyurethane waterproof coating comprises the following raw materials in parts by weight: 206 parts of a polyurethane prepolymer; the polyurethane prepolymer is formed by reaction of hydroxyl-terminated polybutadiene acrylonitrile, organic silicon dihydric alcohol, polyether polyol and polyisocyanate; and 3 to 7 parts of oxazolidine end-capped modified resin based on 206 parts of the polyurethane prepolymer; 6-12 parts of a latent curing agent; 40 to 85 parts of an epoxy plasticizer; and 130 to 300 parts of an additive. According to the polyurethane waterproof coating, organic silicon dihydric alcohol, hydroxyl-terminated polybutadiene acrylonitrile and polyisocyanate react to form an NCO-terminated prepolymer, oxazolidine-terminated modified resin contains terminal group oxazolidine, and the terminal group oxazolidine is hydrolyzed to release secondary hydroxyl and amino to participate in the reaction; the peeling strength of the waterproof material formed by compounding the polyurethane coating and the coiled material is improved.

The invention discloses a rubber coating lithium battery diaphragm and a preparation method thereof, the rubber coating lithium battery diaphragm comprises a base membrane and a coating coated on the base membrane, the coating is obtained by coating rubber coating slurry, and the coating comprises hydrogenated butadiene-acrylonitrile rubber, polyacrylonitrile and polyimide. The HNBR is introduced into the rubber coating slurry, so that the rubber coating lithium battery diaphragm has relatively high binding power; pI is introduced, so that the rubber coating lithium battery diaphragm has relatively high temperature resistance; according to the invention, polyacrylonitrile is innovatively introduced, and meanwhile, the good compatibility of polyacrylonitrile and HNBR brings uniformly-distributed pores to the diaphragm, the fact that polyacrylonitrile has a dense and uniformly-distributed pore-forming function in the oil-based coating diaphragm is found for the first time, and the air permeability of the diaphragm is improved.

The invention relates to the field of textile fabrics, and particularly discloses an antibacterial and crease-resistant garment fabric and a preparation process thereof. The antibacterial and crease-resistant garment fabric is prepared from modified cotton fibers and electrospun fibers of polyacrylonitrile and polyurethane according to the mass ratio of 1: (0.1-0.3): (0.3-0.5), and a preparation method of the polylactic acid fiber modified cotton fibers containing silver nanowires comprises the following steps that the cotton fibers are padded in finishing liquid and then dried and shaped, and pretreated cotton fibers are prepared; the pretreated cotton fibers are padded in the treating fluid and then dried and baked, and modified cotton fibers are prepared; the finishing liquid is prepared from the following raw materials: citric acid modified titanium dioxide sol, sodium hypophosphite, triethanolamine and deionized water; the treating fluid is prepared from the following raw materials: nylon waste silk, chitosan quaternary ammonium salt, N, N-dimethylformamide and alkaline silica sol. The garment fabric has the advantages of being good in antibacterial and crease-resistant effect, lasting in antibacterial effect and high in breaking strength.

The invention discloses a high-strength, high-conductivity and heat-resistant aluminum-based composite material. The aluminum-based composite material is formed by compounding and sintering 90-95 wt% of an aluminum alloy matrix and 5-10 wt% of a conductive fiber membrane. A trace amount of Zr, Hf and B elements are added into the aluminum alloy matrix, and the effects of refining grains, purifying impurities and improving the electric conductivity, heat resistance and comprehensive mechanical performance of the alloy matrix can be achieved. The conductive fiber membrane is a polyaniline / polyacrylonitrile composite conductive fiber membrane doped with nano-copper particles and cerium oxide particles, and polyaniline and polyacrylonitrile blended spinning can improve the strength and stability of the fiber membrane. And the conductivity of the fiber membrane and the bonding strength of the fiber membrane and an aluminum alloy matrix can be further improved through doping of the nano-copper particles and the cerium oxide particles. The aluminum-based composite material disclosed by the invention has good electrical conductivity and heat resistance and excellent comprehensive mechanical properties.

The invention belongs to the technical field of CPVC pipe preparation, and provides a high-strength toughened CPVC pipe and a preparation method thereof. Firstly, butadiene and divinyl benzene are copolymerized to form a high-crosslinking structure, rigid support is provided, butyl methacrylate and acrylonitrile are copolymerized, flexibility and polarity are adjusted, interface bonding force is enhanced, and acrylic acid, epoxy acrylate and ethyl methacrylate are copolymerized to optimize compatibility with a matrix; secondly, through copolymerization of monomers such as 2-sulfonic acid ethyl methacrylate, polyethylene glycol methacrylate and dimethylacryloyloxyphosphonic acid, the polarity and flexibility of the compatilizer are adjusted, and the interface bonding strength of the compatilizer to a CPVC matrix and a modified elastomer is improved, so that the mechanical property of the composite material is remarkably improved; finally, nano SiO2 is subjected to surface modification through a silane coupling agent, so that the dispersity of the inorganic filler and the binding force with a matrix are improved, and the rigidity and the thermal stability of the composite material are enhanced.

The present invention provides a method for determining the residual acrylonitrile content in a polyacrylonitrile polymerization liquid, and the residual acrylonitrile content in the polyacrylonitrile polymerization liquid is determined by using a fully automatic potentiometric titrator; the method mainly comprises the steps of preparing a solution to be tested, a blank titration step, and a titration step of the solution to be tested. The present invention is used to provide a method for determining the residual acrylonitrile content in a polyacrylonitrile polymerization liquid, which can quickly and accurately determine the titration end point, thereby improving accuracy and timeliness, so as to better guide actual production. Compared with the traditional manual titration method, the present invention is simple to operate, has accurate liquid addition volume, uniform stirring speed, and sensitive endpoint mutation. The instrument can automatically titrate and stop the reaction, so that the test error is small, and the detection efficiency is greatly improved.

The invention discloses a high-temperature injection molding plastic material with a spraying-free flow line effect and a preparation method of the high-temperature injection molding plastic material. The spraying-free flow-line-effect polycarbonate plastic material comprises a high-temperature injection molding plastic material and a high-heat-resistance flow-line-effect color master batch, and the preparation process comprises the following steps: (1) preparing the high-heat-resistance flow-line-effect color master batch from the following materials: polyhexamethylene adipamide, polycarbonate, an antioxidant 1 #, an antioxidant 2 #, a lubricant, a weather-resistant agent and toner; (2) preparing a high-temperature injection molding plastic material, wherein the materials comprise polycarbonate, a polyacrylonitrile-styrene-butadiene copolymer, a flexibilizer, an antioxidant 1 #, an antioxidant 2 #, a lubricant, a weather-resistant agent and toner; the color master batch with the high heat-resistant flow line effect is added into a high-temperature injection molding plastic material, the polycarbonate plastic material with the spraying-free flow line effect is obtained by mechanical mixing, and a plastic product with the spraying-free flow line effect, which integrates mechanical properties and attractiveness, can be prepared after injection molding.

The invention relates to the technical field of petroleum drilling fluids, in particular to a preparation method of an anti-calcium tackifier, a brine-based drilling fluid and a preparation method. The preparation method of the anti-calcium tackifier comprises the following steps: A, uniformly mixing the white oil and the emulsifier to form an oil phase for later use; b, dissolving 2-acrylamido-2-methyl-1-propanesulfonic acid, acrylonitrile, a cationic monomer and a vinyl monomer with carboxyl in pure water, adjusting the pH value to 7.0, and uniformly stirring to form a water phase; c, dropwise adding the water phase in the step B into the oil phase in the step A, and uniformly mixing to obtain a stable inverse emulsion; and D, in a nitrogen atmosphere, adding an initiator into the stable inverse emulsion in the step C, and reacting to obtain the anti-calcium tackifier. The brine-based drilling fluid disclosed by the invention can keep good rheological property and stability in a high-temperature environment of 180 DEG C.

The invention relates to the field of catalysts, and discloses a nitrile rubber hydrogenation catalyst and a preparation method and application thereof.The nitrile rubber hydrogenation catalyst comprises a carrier and an active metal component loaded on the carrier, and the carrier comprises a composite metal oxide and silicon dioxide; wherein the composite metal oxide is M < 1-x > Al < x > O (x + 2) / 2, x is 0.1-0.4, and M is selected from at least one of Mg, Ni and Zn; wherein the active metal component is Os; wherein in terms of metal elements, the content of the active metal component is 0.01-5wt% on the basis of the total weight of the catalyst. The catalyst provided by the invention is used for preparing hydrogenated butadiene-acrylonitrile rubber by hydrogenation of butadiene-acrylonitrile rubber, and has high selectivity and hydrogenation degree.

The invention belongs to the field of high-molecular polymer equipment, and particularly relates to a polyacrylonitrile slurry demonomerisation device and a demonomerisation method. Comprising an acetonitrile separation unit, a transpiration PAN capture unit and a slurry discharge unit, the acetonitrile separation unit comprises a main body tank and multiple groups of first tower plates, the multiple groups of first tower plates are arranged in the main body tank in a staggered manner, and the main body tank is provided with a slurry inlet pipeline, a steam inlet pipeline, a vacuumizing pipeline and a temperature control jacket; through combined arrangement of the inclined baffle and the horizontal segmental plate with the exhaust holes, fluid area spreading of slurry is achieved, and meanwhile separation of residual AN monomers in the slurry is achieved through combination of reverse steam introduction and slurry fluid spreading. A plurality of groups of staggered tower plates with segment structures are arranged in the upper auxiliary tank and are matched with a water mist spraying device, so that a small amount of transpiration PAN in slurry is captured and dissolved, and the demonomerisation device can be conveniently disassembled, assembled and maintained.

The invention relates to the technical field of polyvinyl chloride, and discloses a preparation process of a high-strength and high-thermal-stability PVC (polyvinyl chloride) material for a decorative film, which comprises the following steps: mixing polyvinyl chloride, acrylonitrile-butadiene-styrene copolymer, cyano polyesteramide, a stabilizer, a plasticizer, an antioxidant and the like, extruding in a twin-screw extruder, and granulating, the PVC material with high strength and high thermal stability is obtained. The cyano polyesteramide can improve the compatibility between ABS and PVC, so that the material has better mechanical properties, the polyesteramide has a hyperbranched molecular chain structure and plays a certain role in toughening, the compatibility between ABS and PVC is better, the vicat softening temperature of the material is increased, the thermal stability of the material is enhanced, and when the cyano polyesteramide is applied to materials such as decorative films, the material has better mechanical properties. Decorative films and the like can have good heat resistance and are not prone to aging and yellowing.