251 results about "Butyronitrile" patented technology

The invention relates to the technical field of organic synthesis, and discloses a preparation process of (S)-3-aminobutyronitrile hydrochloride, which comprises the following steps: by taking a compound S1 as an initial raw material, sequentially implementing chlorination, amino protection, cyano substitution and deprotection reaction through four-step continuous reaction (M01 preparation, M02 preparation, M03 preparation and M04 preparation), and finally obtaining the high-purity (S)-3-aminobutyronitrile hydrochloride. The preparation process disclosed by the invention is simple and convenient to operate, mild in reaction condition, stable in yield of each step, high in safety and suitable for industrial large-scale production, and can be used for carrying out standard treatment on the cyanide-containing wastewater, and has a relatively good application prospect.

The invention discloses a normal-temperature curing ablation-resistant coating and a preparation method thereof, the normal-temperature curing ablation-resistant coating comprises a component A, a component B and a component C, the component A comprises the following raw materials by weight: 20-30 parts of epoxy resin, 30-40 parts of liquid nitrile rubber, 27-50 parts of an ablation-resistant filler, 10-20 parts of a heat-insulating functional filler, and 200-300 parts of toluene; the component B is a curing agent; and the component C is a curing accelerator. By selecting the high-performance polymer-based resin material and adding the ablation-resistant filler and the heat-insulating functional filler, the ablation-resistant and heat-insulating coating protection construction of the equipment under the normal-temperature curing condition is realized; the problems of ablation-resistant coating construction and thermal protection when a fragile cover, a launcher and the like in a launching system cannot use a high-temperature curing system ablation-resistant coating are solved. The coating can realize military technology and civil use, and can be widely applied to fire prevention and heat insulation construction of buildings.

The invention relates to the technical field of high polymer materials, and discloses a low-temperature-resistant butyronitrile composite material and a preparation method thereof. The butyronitrile composite material comprises the following raw materials in parts by weight: 60-80 parts of nitrile rubber, 25-35 parts of modified hydrogenated nitrile rubber, 1.5-2.5 parts of a vulcanizing agent, 2-3 parts of a vulcanization accelerator, 3-6 parts of a cold-resistant plasticizer, 20-30 parts of carbon black and 2-4 parts of an anti-aging agent. The material is prepared by taking nitrile rubber as a main matrix and adding functional aids such as modified hydrogenated nitrile rubber. The composite material has excellent low temperature resistance while maintaining the comprehensive performance of the nitrile rubber, so that the composite material can be widely applied to the environment needing to adapt to low temperature.

The invention relates to the technical field of cables, and provides a high-toughness corrosion-resistant medium-voltage power cable, which comprises a conductor, and an insulating layer, a shielding layer, an armor layer and a sheath layer which are sequentially arranged outside the conductor, the sheath layer comprises the following components in parts by weight: 70-100 parts of polyvinyl chloride, 30-40 parts of nitrile rubber, 10-15 parts of a flame retardant, 15-20 parts of a plasticizer, 1-3 parts of an antioxidant, 5-10 parts of a filler, 2-4 parts of a heat stabilizer, 1-3 parts of a compatilizer and 0.5-2 parts of a cross-linking agent; the filler is prepared from the following raw materials in parts by weight: 100 parts of calcium carbonate, 20 to 24 parts of 2-ethylhexyl acrylate and 6 to 10 parts of acrylic acid. According to the technical scheme, the problem of poor corrosion resistance of the medium-voltage power cable in the prior art is solved.

The invention relates to the field of cables, and discloses a flame-retardant impact-resistant cable and a preparation process thereof.The cable sheath layer is prepared from low-density polyethylene, nitrile rubber, ethylene-vinyl acetate copolymer, modified halloysite nanotubes and a flame-retardant additive, the preparation method comprises the following steps: carrying out acylating chlorination on 2, 4-dihydroxyphenyl)-2H-benzotriazole, reacting with 3, 5-di-tert-butyl-4-hydroxybenzylamine to prepare a modified acylating chlorination ultraviolet absorbent, and grafting the modified acylating chlorination ultraviolet absorbent with aminated halloysite nanotubes to prepare the ultraviolet absorbent. The aminated halloysite nanotube is prepared by using gamma-aminopropyl triethoxy silane to modify the aminated halloysite nanotube; the flame-retardant additive is prepared from a flame-retardant intermediate obtained by reaction of diphenyl silanediol and phosphorus oxychloride and phosphonitrilic chloride trimer through a precipitation polymerization method. The added modified halloysite nanotube and flame-retardant additive can endow the cable with excellent mechanical properties, aging resistance, flame retardance and heat resistance.

The invention relates to the field of electric wires and cables, and discloses a high-temperature-oxidation-resistant flame-retardant electric wire and cable and a preparation method thereof.The sheath layer of the electric wire and cable comprises low-density polyethylene, nitrile rubber, natural rubber, ethylene-tetrafluoroethylene copolymer, modified multi-walled carbon nanotubes, modified nano titanium dioxide and auxiliaries; the modified multi-walled carbon nanotube is prepared by reacting an acylating chlorination multi-walled carbon nanotube with a polycyclotriphosphazene derivative; the polycyclotriphosphazene derivative is prepared by reacting hexachlorocyclotriphosphazene with p-aminodiphenylamine and then taking diphenyl dihydroxysilane as a linker; the modified nano titanium dioxide is prepared by the following steps: substituting phenylphosphoryl dichloride with phloroglucinol, then sequentially substituting with 3-(3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl chloride and 3-aminopropyltriethoxysilane, and grafting an obtained antioxidant phosphorus-containing coupling agent with nano titanium dioxide. The sheath layer material prepared by the invention has excellent high-temperature oxidation resistance, flame retardance, wear resistance and heat resistance.

The application provides a gas purification system for butyronitrile glove production and belongs to the technical field of waste gas purification. The application comprises a treatment tank and further comprises a spraying cleaning assembly and a flow guiding and impurity removing assembly. Large-particle impurities are intercepted through initial filtration by a filter plate, small particles are centrifugally separated by a spiral blade, and then the waste gas is treated in stages by cooperating the spraying cleaning assembly and the flow guiding and impurity removing assembly. The gas is fully contacted with the purification liquid through a temporary storage barrel and a conical cylinder, so that the up-and-down wrapping type purification is realized, the gas-liquid contact area and reaction time are greatly increased, the mass transfer efficiency is greatly improved, and the waste gas is ensured to meet the discharge standard. The device optimizes the contact mechanism in multiple dimensions. On the one hand, the spiral blade guides the waste gas to spiral upward, thereby prolonging the residence time of the waste gas in the treatment tank. On the other hand, the temporary storage barrel and the conical cylinder cooperate to make the gas fully contact with the storage liquid in the temporary storage barrel, the sliding liquid in the conical cylinder and the liquid sprayed by the nozzle in sequence, thereby forming a triple purification path, ensuring that the gas and liquid are fully mixed and reacted, and ensuring the purification effect.

The invention relates to the technical field of concrete, and provides ultra-high performance concrete and a preparation method thereof. The ultra-high performance concrete is prepared from the following raw materials in parts by weight: 70 to 80 parts of Portland cement, 15 to 25 parts of silica fume, 5 to 10 parts of limestone, 2 to 5 parts of metakaolin, 100 to 120 parts of quartz sand, 24 to 42 parts of hydroxylated steel fiber, 6 to 24 parts of carboxylic butadiene-acrylonitrile latex, 2.0 to 3.5 parts of a water reducing agent and 15 to 22 parts of water. Through the technical scheme, the problem of poor chloride ion permeability resistance of the ultra-high performance concrete in the prior art is solved.

The invention relates to the technical field of adhesives, and particularly discloses an adhesive for repairing a glass fiber reinforced plastic pipeline and a preparation process. The invention relates to an adhesive for repairing a glass fiber reinforced plastic pipeline. The adhesive is prepared from the following raw materials: modified bisphenol A epoxy resin, a curing agent, a glass fiber reinforced filler, a silane coupling agent, phenyl glycidyl ether, hydroxyl-terminated nitrile rubber and an antioxidant 1076, the modified bisphenol A type epoxy resin is prepared by grafting and modifying bisphenol A type epoxy resin through amino-terminated polyether; the glass fiber reinforced filler is prepared from hydroxylated glass fibers and a graphene-carbon nanotube compound through covalent grafting. The adhesive can be used for emergency repair of glass fiber reinforced plastic pipelines, has the advantages of high low-temperature curing speed, high bonding strength and good durability, can effectively avoid cracking and leakage of repaired parts, and is adaptive to low-temperature and high-pressure complex repair working conditions. The preparation process is simple and convenient to operate and high in controllability, the adhesive with uniform performance can be stably prepared, and the repair efficiency and repair quality are guaranteed.

The invention discloses a flame-retardant wear-resistant conveying belt for a coal mine and a preparation method thereof, and belongs to the technical field of wear-resistant conveying belts. Substances such as calcium nitrate tetrahydrate, ferric nitrate nonahydrate and antimony trioxide are subjected to hydrothermal coprecipitation to obtain multifunctional composite microspheres, the microspheres are aminated through a silane coupling agent KH-550 and then coated with silicon carbide, and coated composite microspheres are obtained; the preparation method comprises the following steps: carrying out graft copolymerization on nitrile rubber, octavinyl silsesquioxane and DOPO acrylate, compounding a quaternary phosphonium salt flame retardant to obtain modified nitrile rubber, carrying out three-stage mixing on the modified nitrile rubber, coated composite microspheres, conductive carbon black and other substances to obtain a rubber coating layer, carrying out double-sided calendering on the rubber coating layer and an epoxy resin plasticized aramid fiber skeleton layer, and carrying out vulcanization molding to obtain the composite material. And finally obtaining the flame-retardant wear-resistant conveying belt for the coal mine. The synergistic effect of high flame retardance, strong wear resistance and static electricity resistance is achieved, and the service life is prolonged.

The invention discloses a scratch-proof device for punching and blanking of a nitrile rubber metal coated plate. The scratch-proof device comprises a rack, a feeding unit, a guide conveying unit and a buffer protection unit, the feeding unit is arranged at the material conveying end of the rack and comprises a multi-thickness adjustable material conveying structure, and the multi-thickness adjustable material conveying structure is arranged on a material conveying angle adjustable structure; the guide conveying unit is arranged on the rack and located on one side of the discharging direction of the feeding unit, and comprises a guide seat structure which is provided with a plurality of limiting channels and is arranged on the rack, and a conveying structure which is arranged on one side of the guide seat structure and can ascend and descend; the buffer protection unit is located on one side of the discharging direction of the guide conveying unit and arranged on the rack and comprises a buffer structure arranged at one end of the rack and a photoelectric sensor arranged on the rack and capable of adjusting the distance between the photoelectric sensor and the rack. The device is designed according to the material characteristics of the nitrile rubber metal coated plate, the surface scratch rate of the material can be greatly reduced, the shutdown maintenance time is shortened, and the production cost is reduced.

The invention relates to the technical field of building materials, and discloses a low-temperature environment-friendly processing technology of multistage molding powder, which comprises the following steps: mixing fluorine-modified phenolic resin, hydroxylated nitrile rubber and filler to obtain a premix; extruding and pelletizing the premix through a double-screw extruder to obtain master batches; crushing, grinding and grading the master batch, and collecting powder; putting the powder into a fluidized bed, and spraying fumed silica to obtain primary molding powder; and screening molding powder without anti-corrosion level, first-level anti-corrosion, second-level anti-corrosion, third-level anti-corrosion and fourth-level anti-corrosion. The prepared molding powder is comprehensively improved in heat insulation, corrosion resistance, adhesive force and weather resistance, the process adopts low-temperature processing design, the green production concept is met, the molding powder can be widely adapted to different corrosion environments and use requirements, and the molding powder has remarkable practical value and popularization prospects.

The invention provides a photo-crosslinking type battery binder capable of being rapidly cured and a preparation method of the photo-crosslinking type battery binder. The method comprises the following steps: (1) dissolving hydroxyl-terminated hydrogenated butyronitrile in an organic solvent to obtain a solution A; (2) adding diisocyanate and a catalyst into the solution A for reaction to obtain a solution B; (3) adding polyol into the solution B for reaction to obtain a solution C; and (4) adding an acrylic acid compound into the solution C for reaction to obtain a product precursor D, and illuminating the product precursor D for 4-6 minutes to obtain the photo-crosslinking type battery binder capable of being quickly cured. According to the invention, a stable cross-linking system which can be rapidly cured under the illumination condition is constructed, excellent bonding strength and good polarity are retained, and meanwhile, the adhesive also has good mechanical properties.

The invention discloses automatic glue dipping equipment for a butyronitrile glove laboratory, and relates to the field of butyronitrile glove production equipment.The automatic glue dipping equipment comprises a rack, a glue dipping mechanism and two material buckets, the glue dipping mechanism is composed of a rotating assembly, two lifting assemblies and a clamping assembly, and the rotating assembly is installed at the top ends of four vertical supporting rods; the rotating assembly is used for bearing a glove hand mold and conducting circular motion, the two lifting assemblies are symmetrically arranged on the two sides of the four vertical supporting rods, the two material barrels are placed in the corresponding lifting assemblies respectively, the lifting assemblies are used for controlling the material barrels to move upwards and penetrate through U-shaped through grooves to enable the hand mold to complete glue dipping action in the vertical direction, and the clamping assembly is connected with the lifting assemblies. According to the glue dipping device, the problems that an operator needs to hold a mold for a long time to conduct glue dipping operation, and the labor intensity of the operator is reduced are solved, and therefore the product quality and the production efficiency are remarkably improved.

The present application relates to the technical field of cable, in particular to a kind of anti-aging cable and preparation method thereof.The cable includes conductor, crosslinked polyethylene insulation layer, shielding layer and sheath layer from inside to outside.The sheath layer is prepared by soft polyvinyl chloride resin, butyronitrile rubber, silicon dioxide, silane coupling agent and epoxidized branched modified nano titanium dioxide.Epoxidized branched modified nano titanium dioxide is branched modified nano titanium dioxide by using epoxypropanol and epoxide compound containing naphthalene ring structure, and then modified by epoxidation of epichlorohydrin.Epoxidized branched modified nano titanium dioxide significantly improves the anti-UV aging performance of the cable, reduces the yellowing degree under long-term outdoor exposure conditions, so that the cable has longer service life and higher safety and reliability, and is suitable for various outdoor harsh environments.

The invention provides a special composite brake pad for an air tramcar and a preparation method of the special composite brake pad, relates to the technical field of preparation of composite brake pads, and solves the problems of poor high temperature resistance, insufficient braking performance and poor environmental protection and safety guarantee when a traditional train brake pad friction material is used for a small-radius brake disc. According to the technical scheme, the material formula of the friction body comprises nitrile rubber, a rubber accelerator, a rubber vulcanizing agent, an anti-aging agent, liquid boron modified phenolic resin, nitrile rubber powder, urotropin, glass fibers and the like; the preparation method comprises the steps of rubber cutting and batching, segmented open milling of nitrile rubber, internal mixing and granulation, hot press molding, clamp pressurization, segmented heat treatment and precision machining. The composite brake pad meets the special requirement for high heat load of the composite brake pad, the brake performance is stable, and slipping and chipping are avoided during braking; the high-temperature resistance and heat dissipation capacity are outstanding, the high-temperature carbonization resistance is improved, smoking and carbonization during braking are avoided, and safety guarantee is comprehensive.

The application relates to the technical field of wastewater treatment, in particular to a butyronitrile glove pre-demoulding cleaning wastewater treatment device and method thereof, which comprises a support and a cylinder arranged on the support, and further comprises: a first disc, a second disc and a third disc arranged in the cylinder from top to bottom, the first disc and the second disc are arranged in the cylinder, a premixing area is formed above the first disc, and a liquid storage area for storing wastewater is formed between the second disc and the third disc; by arranging the first disc, the second disc and the third disc in the cylinder, the wastewater is sent to the first disc by the third disc, and a thin liquid layer is formed on the first disc by the scraper, so that the contact area of the wastewater and the treatment reagent is effectively increased, the treatment reagent can be more uniformly mixed with the wastewater, the effective premixing effect is realized, a series of problems caused by uneven distribution of the treatment reagent in the wastewater are avoided, the difficulty of wastewater treatment is reduced, and the treatment efficiency is improved.

The application discloses a kind of ultra-low calcium ion activity monodisperse nano calcium carbonate slurry, which is composed of monodisperse nano calcium carbonate filter cake, calcium carbonate surface end-capping agent, calcium ion complexing agent, potassium hydroxide solution and water; on this basis, the application also provides a kind of nano calcium carbonate high filling amount butyronitrile latex glove, which is made of butyronitrile latex, casein, cellulose, ultra-low calcium ion activity monodisperse nano calcium carbonate slurry and defoaming agent, mixing additive.The monodisperse nano calcium carbonate slurry disclosed by the application has very low calcium ion activity, and as a filler used in butyronitrile latex glove, it will not cause latex flocculation risk, preventing the stability of butyronitrile product production process from being damaged; and it has good dispersibility in butyronitrile latex, and can play an excellent reinforcing effect in butyronitrile latex glove, obtaining better performance.

This invention belongs to the field of polymer protective materials technology, and discloses a nitrile glove modified with bio-based itaconic acid ester rubber latex and compounded with an antibacterial agent, as well as its preparation method. The glove uses carboxylated nitrile butadiene latex as the matrix, introduces a bio-based itaconic acid ester rubber latex pretreated with a silane coupling agent as a reactive interfacial compatibility component, and uses nano-silver-zinc composite particles and reactive quaternized chitosan to form an immobilized composite antibacterial phase. The glove is prepared through blending, impregnation molding, surface immobilization treatment, gradient vulcanization, and post-treatment. The resulting glove possesses excellent flexibility, low-temperature embrittlement resistance, oil resistance, and long-lasting antibacterial properties, and the antibacterial components are not easily migrated or detached, making it suitable for food processing, medical auxiliary protection, and low-temperature operations.

The invention relates to the field of cables, and discloses an aerial insulated cable, a protective layer of which is prepared from the following materials: low-density polyethylene, nitrile rubber, ethylene-vinyl acetate copolymer, modified composite filler, functional additive and the like. The modified composite filler is prepared by grafting a modified silane coupling agent and Na-montmorillonite loaded titanium dioxide; the modified silane coupling agent is prepared by reacting p-hydroxybenzaldehyde with phosphorus oxychloride, then carrying out addition with DOPO (9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide), reacting the obtained product with p-aminodiphenylamine, and then carrying out substitution with 3-chloropropyltriethoxysilane; the functional additive is prepared by the following steps: reacting 3, 5-di-tert-butyl-4-hydroxybenzaldehyde with 2-amino-4-methylbenzothiazole, then adding sodium borohydride for reductive amination, substituting the obtained product with cyanuric chloride, and then reacting with N-butyl-2, 2, 6, 6-tetramethyl-4-piperidylamine, and the functional additive is prepared by the following steps: reacting 3, 5-di-tert-butyl-4-hydroxybenzaldehyde with 2-amino-4-methylbenzothiazole; and the protective layer material is endowed with good flame retardance, antibacterial property and long-acting aging resistance.

The utility model discloses an automatic sorting device for butyronitrile gloves, and belongs to the technical field of automatic sorting. The device comprises a feeding assembly, a conveying assembly, a separation assembly, an image recognition module, a sorting execution assembly, an intelligent control unit and a storage assembly. Through the synergistic effect of a vibration disc and a dispersing wheel arc-shaped limiting plate of the separation assembly, the separation problem of stacked gloves is solved; accurate conveying of a single glove is achieved through the self-adaptive design of the distance between the adjustable baffle and the separating claw; an image recognition system based on an industrial camera and an HSV color model judges the color and posture of the glove in real time, and a manipulator is driven to flexibly grab the glove through a pneumatic suction cup and deliver the glove to a corresponding stock bin according to an instruction; and meanwhile, the system is in butt joint with an MES system through an OPC UA protocol, and real-time uploading of sorting data and equipment state monitoring are achieved.

The application provides a waterproof coating prepared from red mud and a preparation method thereof, wherein the waterproof coating includes, by mass fraction, 300-350 parts of pure propylene emulsion, 150-200 parts of butyronitrile latex, 40-60 parts of halloysite, 40-60 parts of titanium white powder, 100-150 parts of ground red mud, 100-150 parts of heavy calcium powder, 2-3 parts of cellulose ether, 4-6 parts of dispersing agent, 1-3 parts of wetting agent, 3-5 parts of defoaming agent, 2-4 parts of preservative, 6-8 parts of iron red powder, 0.5-1.5 parts of organic color paste and the rest water; the waterproof coating can be prepared from the waste red mud, is more environmentally friendly, has low production cost, and has good waterproofness, strength, adhesion, crack resistance and weather resistance.

The present application relates to the technical field of insulating powder coating, in particular to an anti-stone impact insulating powder coating for automobile battery tray and a preparation method thereof, which is composed of the following raw materials in parts by weight: epoxy resin A, epoxy resin B, butyronitrile rubber modified epoxy resin, phenolic resin curing agent, quartz powder, leveling agent, pigment, curing accelerator, anti-settling agent, adhesion enhancer, defoaming agent and electric potential enhancer.The present application simultaneously gives the coating super-high insulation and top anti-stone impact performance through single coating, completely eliminating the secondary construction link; solid powder system is adopted to realize zero VOC emission; special toughening resin and gradient curing process make the coating have rigid protection and toughness buffer, the actual measured anti-stone impact grade is greater than 9 and the breakdown voltage meets 6kV, the leakage current is less than 0.1mA, which perfectly adapts to the strict requirements of electric vehicle high-voltage battery system on safety and environmental protection, and solves the technical defects in the traditional scheme.

The invention belongs to the technical field of labor protection articles, and particularly relates to a low-temperature-resistant nitrile rubber impregnated glove and a preparation method thereof.The low-temperature-resistant nitrile rubber impregnated glove comprises a glove core, and a low-temperature-resistant nitrile rubber layer is fixed to the outer surface of the glove core in an impregnation mode; slurry components of the low-temperature-resistant nitrile rubber layer comprise a nitrile rubber material, potassium hydroxide, zinc oxide, polyurethane emulsion and wax emulsion, and raw material components of the nitrile rubber material comprise nitrile rubber, a vulcanizing agent, an accelerant and a cold-resistant additive. According to the present invention, the traditional contradiction among low temperature resistance, mechanical strength and wear resistance of the nitrile rubber glove is well solved, and the high stability and the processing adaptability of the slurry in the impregnation process are ensured so as to successfully prepare the nitrile rubber glove, and meanwhile, the impregnated gloves have the comprehensive advantages of durability, comfort, flexibility and the like.

The application discloses a preparation method of an antistatic butyronitrile glove and belongs to the technical field of glove preparation. The method comprises the following steps: step 1: mixing carboxyl butyronitrile latex, PVC-VE emulsion, sodium hydroxide, zinc oxide, a multifunctional additive, sulfur, an accelerator, deionized water and a surfactant, uniformly stirring the mixture to obtain a mixed slurry; step 2: immersing a clean glove model into a coagulant solution at 80 DEG C, vertically dripping, taking out and drying, then immersing the glove model into the mixed slurry, vertically dripping and drying, twice immersing the slurry, vertically dripping and drying again, then performing leaching, edge curling and vulcanization, and finally performing leaching, cleaning and drying to obtain the butyronitrile glove. The multifunctional additive independently synthesized in the preparation process of the butyronitrile glove can significantly improve the comprehensive performance of the product.

The application belongs to the field of medicine synthesis, and particularly relates to a preparation method of 2,2-disubstituted-4-phenyl butyronitrile derivative, which comprises the following steps: mixing phenetole, nitrile and alkali agent in a molar ratio of 1.0:3.5-4.5:2.5-3.5 in aprotic solvent with a dielectric constant (epsilon) less than 20 at 60-100 DEG C for 12-30 hours; after the reaction is completed, the cooled reaction system is adjusted to be neutral, and the product is collected and purified. The phenetole is subjected to elimination reaction under alkaline conditions to generate a carbon-carbon double bond, and is subjected to addition reaction with the nitrile to obtain the 2,2-disubstituted-4-phenyl butyronitrile derivative. Meanwhile, the raw materials used are low in price and easy to synthesize, the cost is greatly reduced, the industrialization prospect is wider, and the operation is simple, so that the process technology has more competitive value.

The invention belongs to the technical field of polymer protective materials. The invention provides a pair of self-repairing antibacterial allergy-free butyronitrile gloves, the base material of which is prepared from the following components in parts by weight: 100 parts of nitrile rubber, 3 to 5 parts of dynamic cross-linking agent, 4 to 6 parts of lysozyme-chitosan composite microspheres, 12 to 15 parts of plasticizer, 1.0 to 1.2 parts of vulcanizing agent, 0.8 to 1.0 part of accelerant, 1.0 to 1.2 parts of stabilizer and 200 to 220 parts of deionized water, the dynamic cross-linking agent is dithiodipropionic acid; 0.5-1.0 part of hyaluronic acid moisturizing coating is coated on the inner surface of the base material. Aiming at the technical defects that the existing butyronitrile gloves are easy to damage, an antibacterial agent is easy to lose and the sensitization is high, a disulfide bond dynamic cross-linked network is constructed in a nitrile rubber matrix, a lysozyme-chitosan composite microballoon enzyme catalytic antibacterial system is introduced, and a phytosterol plasticizer and a hyaluronic acid inner coating are matched, so that the anti-allergenicity butyronitrile gloves are prepared. The coordination of triple functions of self-repairing, long-acting antibacterial and low sensitization is realized.

The application relates to the hydraulic technology field and discloses a pilot valve plunger sealing structure, which comprises a pilot valve body, a pilot valve plunger is slid in the interior of the pilot valve body, a plunger guide sleeve is arranged on the outer periphery of the pilot valve plunger, a main sealing piece is slid in the interior of one side of the plunger guide sleeve close to the pilot valve plunger, a check ring is abutted on one side of the main sealing piece away from the plunger guide sleeve, a plunger hole and a sealing hole are arranged in the interior of the pilot valve body, a valve core is arranged in the interior of the pilot valve body, and a metering spring and a return spring are arranged on the outer periphery of the valve core. In addition to the O-shaped sealing ring auxiliary static sealing and dynamic sealing, the sealing piece formed by the fixed sleeve, hydrogenated butyronitrile rubber with a special structure and the self-tight spring realizes static and dynamic sealing, the plunger sealing performance is improved through the multiple static sealing and dynamic sealing, and the possibility of hydraulic oil leakage is reduced.

The invention belongs to the technical field of high polymer materials, and particularly relates to a preparation process of modified silicon dioxide reinforced high-tension butyronitrile gloves. The preparation process of the modified silicon dioxide reinforced high-tension butyronitrile gloves comprises the following steps: S1, adding silicon dioxide, a stabilizer, an accelerant and a defoaming agent into butyronitrile latex, uniformly dispersing, then adding magnetic composite aerogel and sulfur powder, and uniformly stirring to obtain a mixture; s2, a glove mold is soaked in the mixture for dipping treatment, then the glove mold is taken out and dried, leaching treatment, drying vulcanization forming and demolding are carried out, and the modified silicon dioxide reinforced high-tension butyronitrile glove is obtained. The light weight of the glove is guaranteed, and the elongation at break and the tensile strength of the material are remarkably improved.

This invention relates to the field of liquid bag film preparation technology, and in particular to a lightweight polyethylene liquid bag film and its preparation method. The lightweight polyethylene liquid bag film comprises the following raw materials: polyolefin matrix resin, 3-(4-vinylphenoxy)-1-propylene, (3-buten-1-yl) acrylate, calcium lignosulfonate, carboxylated butadiene-acrylonitrile latex, trimethylolpropane triacrylate, initiator, crosslinking agent, accelerator, antioxidant, and slip agent. In the preparation process, 3-(4-vinylphenoxy)-1-propylene and (3-buten-1-yl) acrylate form a long-chain branched structure in the system, improving the tensile strength of the finished product. Simultaneously, trimethylolpropane triacrylate is added to increase the entanglement between molecular chains, and calcium lignosulfonate and carboxylated butadiene-acrylonitrile latex are added to dissipate impact energy and inhibit crack propagation. Therefore, the resulting polyethylene liquid bag film also exhibits significant impact resistance.