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436 results about "Butyronitrile" patented technology

Butyronitrile or butanenitrile or propyl cyanide, is a nitrile with the formula C₃H₇CN. This colorless liquid is miscible with most polar organic solvents.

Preparation process of (S)-3-aminobutyronitrile hydrochloride

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.
Owner:HUNAN ASIDICHEM PHARM CO LTD

Normal-temperature curing ablation-resistant coating and preparation method thereof

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.
Owner:ANHUI YINGLIU HAIYUAN COMPOSITE MATERIALS TECH CO LTD

Low-temperature-resistant butyronitrile composite material and preparation method thereof

PendingCN121226866AVulcanizationNitrile rubber
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.
Owner:HUBEI HENGXIANG TECH CO LTD

Wear-resistant rubber-plastic composite material for high-pressure air pipe and production method thereof

The invention relates to the field of high polymer materials, and particularly discloses a rubber-plastic composite material for a wear-resistant high-pressure air pipe and a production method of the rubber-plastic composite material. The composite material comprises the following raw materials in parts by weight: 100 parts of PVC; 36-45 parts of a plasticizer; 4-6 parts of a stabilizer; 8 to 13 parts of polytetrafluoroethylene; 3 to 6 parts of nano silicon dioxide; 22 to 30 parts of TPU (Thermoplastic Polyurethane); 23 to 30 parts of butyronitrile powder; and 2-4 parts of a lubricant. The production method comprises the following steps: uniformly mixing the raw materials according to the ratio, and extruding and granulating. The composite material has the advantage of high wear resistance.
Owner:TAIZHOU FENGYUAN SANITARY CO LTD +1

High-toughness corrosion-resistant medium-voltage power cable

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.
Owner:ANHUI MINGDU ELECTRIC WIRE

Softer Blended Nitrile Elastomeric Article

An elastomeric article is formed from a blend of nitrile rubber and polychloroprene rubber. The elastomeric article can be a glove, such as a medical exam glove. The elastomeric article is softer than a conventional nitrile elastomeric article. The elastomeric article is formed from a blended rubber latex emulsion of nitrile and polychloroprene. The blended rubber latex emulsion may be free of sulfur and vulcanization accelerators.
Owner:O&M HALYARD INC

Flame-retardant impact-resistant cable and preparation process thereof

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.
Owner:GUANGDONG CHENGTONG WIRE & CABLE FACTORY CO LTD

High-temperature-oxidation-resistant flame-retardant wire and cable and preparation method thereof

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.
Owner:HUNAN YIYUANXIN TECH CO LTD

Disposable antiperspirant butyronitrile glove and preparation method thereof

The invention relates to the technical field of disposable gloves, in particular to disposable antiperspirant butyronitrile gloves and a preparation method thereof. The disposable antiperspirant butyronitrile glove comprises a glove body and an antiperspirant layer attached to the glove body, and the antiperspirant layer is prepared from, by weight, 85-95 parts of carboxyl butyronitrile latex, 3-8 parts of aluminum chlorohydrate, 2-4 parts of modified nanocellulose, 1-2 parts of glycerinum, 0.5-1 part of polyethylene glycol 6000, 2-3 parts of zinc oxide nanoparticles and 0.1-0.3 part of mint extract. The invention also discloses a preparation method of the disposable antiperspirant butyronitrile glove. Through the synergistic effect of the constructed composite emulsion system containing the ACH-PEG nano sustained-release particles and the preparation process of the butyronitrile latex, the balance optimization of the antiperspiration function and the mechanical property of the glove is realized. Compared with traditional rubber gloves, on the basis that the tensile strength is kept, the sweat inhibition capacity is greatly improved.
Owner:SHANDONG YINGKE MEDICAL PROD CO LTD

A gas purification system for producing nitrile gloves

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.
Owner:ANQING YINGKE MEDICAL CO LTD

Marine thermal runaway battery test pack

A marine thermal runaway battery test pack disclosed by the present invention comprises a box body, a battery module and a cover plate assembly, sealing is realized through a butyronitrile sealing ring embedded in a sealing groove, the box body is provided with a power aviation plug, and the box body is also internally provided with a safety protection liquid for immersing the battery module. Each battery module is composed of a plurality of simulation battery cells and real battery cells which are connected in series in a module end plate and a module side plate, an aluminum extrusion harmonica-shaped tube is inserted between every two adjacent battery cells, each battery cell is sequentially connected with a copper bar and an overcharge power line through a connecting aluminum bar, then is connected with a power aviation plug and then is connected with a charging and discharging machine, and a water inlet and outlet valve is arranged on the box body. The cover plate assembly comprises thickened transparent acrylic, and an aerosol fire-fighting device or / and a perfluorohexanone capsule sheet is arranged in a cover plate; according to the invention, a fire-fighting measure-free thermal runaway test, a water inhibition overcharge thermal runaway test and a silicone oil inhibition overcharge thermal runaway test can be realized by opening and closing water inlet and outlet valves, and the overcharge thermal runaway test can be realized through an aerosol fire-fighting device or a perfluorohexanone capsule sheet.
Owner:WUHAN WEIMAI NEW ENERGY POWER CO LTD

Ultra-high performance concrete and preparation method thereof

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.
Owner:SHIJIAZHUANG YIDAHENGLIAN ROAD BRIDGE MATERIAL CO LTD

Method for synthesizing 2, 3-dimethyl-2-isopropyl butyronitrile

The invention belongs to the field of fine chemical engineering, and discloses a method for synthesizing 2, 3-dimethyl-2-isopropyl butyronitrile, which comprises the following steps of: adding an organic amine solvent into a high-pressure reaction kettle, adding sodium amide, sodium iodide and a phase transfer catalyst into the reaction kettle under the protection of nitrogen and in a stirring state, stirring for a certain period of time, and reacting for 2-3 hours to obtain 2, 3-dimethyl-2-isopropyl butyronitrile. Dropwise adding a mixed solution of propionitrile and 2-bromopropane into the reactor, controlling the dropwise adding speed and the reaction temperature, continuously reacting for a period of time after the dropwise adding is finished to obtain a reactant solution, cooling the reactant solution, adding water, standing for layering, collecting an organic phase, distilling the organic phase at normal pressure to recover a solvent, and rectifying at reduced pressure to obtain 2, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3-pentanediol. According to the method, the sodium iodide, the phase transfer catalyst and the organic amine have a synergistic effect, so that the reaction time is shortened, and the yield of the product is improved.
Owner:INNER MONGOLIA HUAKUN BIOTECHNOLOGY CO LTD

Sealing rubber assembly, preparation method thereof and hose connector sealing structure

The invention belongs to the technical field of hose sealing in the nuclear power field, and particularly relates to a sealing rubber assembly, a preparation method of the sealing rubber assembly and a hose connector sealing structure. 50 parts of nitrile rubber NBR; 10 parts of liquid butyronitrile latex; 5 parts of zinc oxide; 1 part of stearic acid; 2 parts of magnesium oxide; 2 parts of a flowing exhaust agent SC617; 5 parts of phenolic resin HM601; 1.5 parts of an anti-aging agent RD; 1 part of an anti-aging agent 4020; 60 parts of carbon black N660; 6 parts of aromatic oil; 4 parts of a plasticizer dioctyl phthalate (DOP); 1.0 part of sulfur; 0.8 part of an accelerant CBS; 0.8 part of an accelerant DM; the preparation method comprises the following steps: step 1, plastifying BIIR and NBR: plastifying by adopting an internal mixer, and carrying out thin-passing by adopting an open mill to obtain plastified rubber; and step 2, a mixing process: carrying out first-stage mixing and second-stage mixing by adopting an internal mixer to obtain the sealing rubber assembly. The sealing rubber assembly disclosed by the invention has excellent sealing, gas insulation, liquid oil resistance and liquid resistance.
Owner:CNNC NUCLEAR POWER OPERATION MANAGEMENT CO LTD

Preparation method of environment-friendly waterborne polyurethane modified butyronitrile latex and application of environment-friendly waterborne polyurethane modified butyronitrile latex in labor protection gloves

The invention discloses a preparation method of environment-friendly waterborne polyurethane modified butyronitrile latex and application of the environment-friendly waterborne polyurethane modified butyronitrile latex in labor protection gloves. The leather working gloves prepared from the waterborne polyurethane modified butyronitrile latex not only have excellent wear resistance of the butyronitrile latex, but also overcome the limitation of the traditional butyronitrile leather working gloves, and the durability and softness of the gloves are remarkably improved.
Owner:HANGZHOU TRANSFAR FINE CHEM CO LTD +2

Adhesive for repairing glass fiber reinforced plastic pipeline and preparation process thereof

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.
Owner:SHENGLI OILFIELD DONGFANG PENGDA NON-METALLIC MATERIAL PROD CO LTD

Flame-retardant wear-resistant conveying belt for coal mine and preparation method thereof

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.
Owner:LIANGSHAN SHUIBO ADHESIVE TAPE CO LTD

A sound insulation coating, its preparation method and a sound insulation coating

The present invention provides a sound insulation coating, a preparation method thereof and a sound insulation coating. The sound insulation coating of the present invention comprises a styrene-acrylic emulsion, an inorganic filler, an organic sound insulation filler, a porous drying accelerating filler and a drainage drying accelerating fiber, and the organic sound insulation filler comprises at least one of acrylonitrile-butadiene rubber powder, ethylene-propylene rubber powder, polyurethane powder, acrylonitrile foamed microspheres, polyvinylidene chloride foamed microspheres and acrylate foamed microspheres. The present invention also provides a preparation method of the sound insulation coating and a sound insulation coating.
Owner:CHINA RESOURCES CEMENT TECH RES DEV +1

Punching and blanking scratch-proof device for nitrile rubber metal coated plate

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.
Owner:HUOSHAN HUINENG AUTO PARTS MFG

Low-temperature environment-friendly processing technology of multi-stage molding powder

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.
Owner:JIAXING YUANHENG NEW MATERIAL CO LTD

Photo-crosslinking rapidly-curable battery binder and preparation method thereof

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.
Owner:BEIJING UNIV OF CHEM TECH

Antimicrobial high polymer material product and preparation method thereof

The invention relates to the technical field of high polymer material processing, in particular to an antimicrobial high polymer material product and a preparation method thereof.The antimicrobial high polymer material product is obtained by applying photon broadband antibacterial treatment to the high polymer material product; the high polymer material comprises plastic or rubber, the plastic comprises polyethylene or polyvinyl chloride, and the rubber comprises butyronitrile; the high polymer material product is an elastomer product; the elastomeric articles include glove fingerstalls, dams, probe sleeves, or medical catheters. The antimicrobial high polymer material product has an excellent inhibition effect on staphylococcus aureus, escherichia coli, klebsiella pneumoniae, pseudomonas aeruginosa, candida albicans and the like, the antibacterial rate can reach 89% or above, the preparation process is simple, the cost is controllable, and the antimicrobial high polymer material product is suitable for industrial production.
Owner:SHANDONG YINGKE MEDICAL PROD CO LTD

Automatic glue dipping equipment for butyronitrile glove laboratory

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.
Owner:JIANGXI INTECH MEDICAL CO LTD

Aging-resistant cable and method for its production

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.
Owner:LISHUI FEIZHOU CABLE CO LTD

Wear-resistant butyronitrile composite material and preparation method thereof

ActiveCN120230334APolymer scienceStearic acid
The invention discloses a wear-resistant butyronitrile composite material and a preparation method thereof, and relates to the technical field of high polymer materials. The wear-resistant butyronitrile composite material comprises the following raw materials in parts by weight: 100 parts of nitrile rubber, 15-25 parts of nano silicon dioxide, 8-12 parts of a plasticizer, 3-5 parts of zinc oxide, 1-3 parts of stearic acid, 2-3 parts of an antioxidant, 3-5 parts of a modified flame retardant, 5-8 parts of a modified antibacterial agent and 1-3 parts of a coupling agent. The preparation method comprises the following steps: reacting 2-chloro-4-aminophenol with triethylene glycol monoethyl ether to generate a polyether bond compound; the polyether bond compound, paraformaldehyde and 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide are subjected to a reaction, and a flame retardant compound is generated; the phosphonitrilic chloride trimer reacts with the flame retardant compound to generate the modified flame retardant. The wear-resistant butyronitrile composite material prepared by the invention has excellent flame retardant property and antibacterial property.
Owner:XINYA SAFETY TECH(HUAIAN) CO LTD

Special composite brake pad for air tramcar and preparation method of special composite brake pad

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.
Owner:SHENYANG YUANCHENG FRICTION & SEALING MATERIAL CO LTD

A device for treating wastewater from cleaning nitrile gloves before demoulding and a method for treating wastewater from cleaning nitrile gloves before demoulding

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.
Owner:JIANGSU BAITONGDA MEDICAL SUPPLIES CO LTD

A nitrile glove without potential cytotoxicity and preparation method thereof

ActiveCN115947984BVulcanizationNitrile rubber
The present invention discloses a kind of low cytotoxic nitrile gloves and preparation method, mainly have two aspects of technical improvement, its formula is mainly by changing the vulcanization means (not using sulfur accelerator system) of nitrile gloves, adopt cross-linking agent and zinc oxide to vulcanize acrylonitrile rubber;Technology is realized by increasing weak acid washing before vulcanization, low concentration alcohol solution washing process control section after neutralization and washing etc..The gloves prepared by the present invention, no sulfide bad smell, pinhole rate is low, the gloves 100% sample leachate is 0 grade to L929 cytotoxicity reaction, film thickness is 0.04-0.15mm, tensile strength is greater than 20Mpa, and elongation is 600%-700%.In preparation method of the present invention, vulcanization temperature is relatively low at 90-105 DEG C, compared with traditional commercially available nitrile gloves, and its energy consumption in production process is low.
Owner:ZHONGHONG PULIN MEDICAL PROD CO LTD