13 results about "Acrylonitrile" patented technology

The invention discloses a biodegradable 3D printing toughening material and a preparation method, which consists of the following components by weight: polylactic acid (PLA): 70-80 parts; EVA: 30-20 parts; toughening agent: 6-8 parts; compatibilizer: 0.4-5.0 parts; auxiliary agent: 0.2-2.0 parts. The toughening agent is dioctyl phthalate (DOP); the compatibilizer includes maleic anhydride grafted polymer, which is a tertiary polymer formed by copolymerization of methyl methacrylate, butadiene and styrene copolymer. Copolymer; terpolymer (SAG) formed by copolymerization of styrene, acrylonitrile and glycidyl methacrylate. One or two or more compatibilizers are used together. The 3D printing composite material prepared by the invention is non-toxic and environment-friendly, has superior comprehensive performance, and has broad market prospects and application value.

The invention discloses novel rubber good in oil resistance. The novel rubber comprises 15-35 parts of chlorinated ethylene propylene rubber, 20-30 parts of butadiene-acrylonitrile rubber, 25-40 parts of fluoride rubber, 3-7 parts of zinc oxide, 5-10 parts of calcium borate, 3-8 parts of magnesium methacrylate, 10-15 parts of white carbon black, 20-40 parts of paraffin, 12-20 parts of bismaleimide resin, 15-28 parts of phenol-urea-formaldehyde copolycondensation resin, 2-7 parts of 2-(p-benzyl-chloride-sulfhydryl-thioxo) benzimidazole and 15-22 parts of anti-aging agent. The novel rubber is prepared through a process of plastication, mixing, vulcanization, drying, cooling and standing and the like. According to the prepared novel rubber, the use of a rubber material in the environment filled with oil is met, and original rubber performances are not affected. The oil resistance (the expansion rate after oil soaking) of the novel rubber is 6.5-8.5%, the heat-resistant coefficient (the coefficient of thermal aging) is 0.61-0.78, the air tightness is 2.5-2.8 m2/s.Pa, and the tear resistance is 58-63 kN.m.

The invention relates to the technical field of extrusion and processing of plastic products, in particular to a color bending-resistant co-extruded section bar reflecting infrared rays, which comprises, by weight part, 100 parts of acrylic acid-styrene-acrylonitrile copolymer or polymethylmethacrylate, 0-110 parts of polyvinyl chloride (PVC) and 5-16 parts of stabilizing agent. A color bending-resistant co-extruded granular material reflecting the infrared rays is obtained by adding a dry mixed potassium titanate crystal whisker material treated by a silane coupling agent, the color bending-resistant co-extruded granular material reflecting the infrared rays and a PVC dry material with a processing agent are prepared into the color bending-resistant co-extruded section bar reflecting the infrared rays through a special co-extruding mold, and color co-extruded doors and windows made of the color bending-resistant co-extruded section bars reflecting the infrared rays have the functions of reflecting the infrared rays, insulating heat and strengthening resistance to deformation. Under the action of the infrared rays, the thermal deformation degree of the color co-extruded doors and windows is reduced, the service life of the color co-extruded doors and windows is prolonged, and the reduction of the sealing performance of the color co-extruded doors and windows is avoided.

The invention discloses a preparation method of cellulose-based conductive hydrogel. The method comprises the following steps: adding cellulose into a zinc chloride solution, and grafting monomers onto the cellulose under the action of an initiator, wherein the monomers are acrylonitrile and acrylamide, According to the invention, the hydrogel is prepared by adopting a one-step method, the processis simple and easy to operate, and the prepared hydrogel has excellent tensile property, compression resistance, frost resistance and conductivity, and also has excellent conductivity at low temperature.

The invention discloses a polyester alloy composition for improving high-temperature welding performance and application thereof, and relates to the technical field of high polymer materials, the polyester alloy composition is prepared from the following components by weight: 5-30 parts of polyarylester, 30-70 parts of polycarbonate, 10-30 parts of a styrene-butadiene-acrylonitrile copolymer, 2-6 parts of a flexibilizer, and 0.5-2 parts of a heat stabilizer. 1-2 parts of a coloring agent, 0.4-1 part of an antioxidant, 0.2-0.5 part of a lubricant and 0.1-0.5 part of an ester exchange inhibitor. The polyester alloy composition for improving the high-temperature welding performance provided by the invention has the characteristics of high temperature resistance, high welding strength and stable size; therefore, the alloy material is particularly suitable for being applied to the field with the requirements for high strength and high size precision of hot plate welding, for example, the hot plate welding of main and auxiliary instrument panel bodies and side plates of automobiles has a good application effect.

The invention discloses a treatment method for nitrile rubber production wastewater. The method comprises the following steps of: a, adjusting the pH value of nitrile rubber production wastewater to be greater than 7, and mixing the wastewater, the pH value of which is adjusted, with borohydride and aluminum chloride to reduce acrylonitrile in the wastewater; and b, performing coagulation and air-flotation treatment, hydrolytic acidification treatment, activated sludge treatment and purification treatment in a biological aerated filter sequentially on the wastewater reduced by acrylonitrile. The wastewater treated by the method disclosed by the invention is basically free of acrylonitrile residues, and the COD value is less than 50 mg/L and the ammonia nitrogen content is less than 5 mg/L. The wastewater is colorless and transparent in appearance and the effluent water quality is relatively high.

The invention discloses a method for anaerobic fermentation of organic household garbage of villages and small towns and particularly relates to a method for applying an ammonia nitrogen adsorption film material to an anaerobic fermentation process. A method for preparing the ammonia nitrogen adsorption film material comprises the following steps: firstly, preparing a FeZn Berlin blue compound, then, dissolving polyacrylonitrile (PAN) in N,N-dimethylformamide (DMF), carrying out stirring until the PAN is completely dissolved, then, adding the FeZn Berlin blue compound, and continuing to carryout stirring and uniform dispersing, so as to obtain an electrostatic spinning solution; and adding the electrostatic spinning solution into an injector of an electrostatic spinning machine, and carrying out spinning, thereby obtaining a FeZn Berlin blue/polyacrylonitrile composite nano-fiber film. The composite nano-fiber film is high in adsorption capacity to ammonia nitrogen, stable in performance and simple in preparation method and has great potential applications to ammonia nitrogen adsorption and ammonia inhibition removal in the anaerobic fermentation process of the organic household garbage of the villages.

The invention provides a magnetic modified acrylonitrile-butadiene-styrol copolymer and relates to the field of high polymer material technology. The magnetic modified acrylonitrile-butadiene-styrol copolymer is composed of 110-125 parts of acrylonitrile-butadiene-styrol copolymer, 18-25 parts of bromoindene, 15-24 parts of silver chloride, 8-16 parts of silver nitrate, 23-29 parts of potassium nitrate, 21-28 parts of N-isopropylmaleimide, 32-42 parts of sodium hydroxide, 19-28 parts of ferrous sulfate, 12-24 parts of sodium dehydroacetate, 30-39 parts of ferroferric oxide magnetic-particles, 5-9 parts of iron oxide brown, 16-21 parts of filter aid, 17-25 parts of adhesive, 12-20 parts of bactericide and 30-42 parts of filler. The magnetic modified acrylonitrile-butadiene-styrol copolymer has the advantage that the acrylonitrile-butadiene-styrol copolymer has magnetism by adding the magnetic material into the composition formula.

The disclosure provides a carbon fiber precursor composition and a method for preparing the carbon fiber precursor. The carbon fiber precursor composition includes 100 parts by weight of acrylonitrile; 1-15 parts by weight of co-monomer; and 0.1-3 parts by weight of stereoregularity controlling agent, wherein the stereoregularity controlling agent has a structure represented by Formula (I), Formula (II), Formula (III), or Formula (IV), wherein R1 and R2 are independently hydrogen, -OH, -COOH, or -NH2; R3 is C2-8 alkylene, or carbonyl; R4 is hydrogen, or C1-6 alkyl; and R5 is C3-6 alkylene. Dueto the addition of the stereoregularity controlling agent into a solution polymerization reaction system, the carbon fiber precursor composition and the method for preparing the carbon fiber precursor perform polyacrylonitrile copolymer synthesis so as to increase the ratio of isotactic polyacrylonitrile in the polyacrylonitrile copolymer.