5 results about "Benzoyl peroxide" patented technology

The invention relates to a method for preparing a chloroprene rubber adhesive agent. The current products contain a large amount of methylbenzene and are poisonous. The invention comprises the following steps: firstly adding the chloroprene rubber and chlorinated polyethylene into a mixed solution (the compositions are 120# solvent oil, acetic ether, butanone, acetone and methyl carbonate) and mixing; after being entirely dissolved, filling nitrogen into the reactor; then adding methyl methacrylate and vinyl acetate and heating up to 80-100 DEG C; adding benzoyl peroxide to initiate a polymerization reaction; after 2-3 hours of the polymerization reaction, adding acroleic acid and adding additional benzoyl peroxide to continue reacting for 1-2 hours; after that, stopping the filling of the nitrogen and cooling to 30-50 DEG C; then adding 2,6-ditertiary butyl-p-cresol, mixing and discharging to obtain the chloroprene rubber adhesive agent. Therefore, the chloroprene rubber adhesive agent prepared by the method of the invention is environmental-friendly and has higher bonding strength to EVA soles. The method has the advantages of simple process and can realize large-scale production.

The invention discloses a thermoplastic starch-polyvinyl alcohol composite plastic film, and relates to the technical field of film production. The composite plastic film is made by using the following raw materials, by mass, 80-100 parts of (self-made) thermoplastic starch, 40-55 parts of polyvinyl alcohol, 10-15 parts of acrylic acid, 5-10 parts of benzoyl peroxide, 7-12 parts of oxidized polyethylene wax, 4-8 parts of hydroxyethyl cellulose, 5-12 parts of calcium stearate, 5-15 parts of iron oxide, 3-6 parts of gelatin, 5-10 parts of urea, and 8-15 parts of polyethylene glycol. The composite plastic film made in the invention reserves the good biodegradation performance of starch and effectively improves the mechanical performances of a plastic film, and a covalent bond introduced due to the addition of a cross-linking agent can substitute a hydrogen bond in order to improve the mutual crosslinking among starch, polyvinyl alcohol and other raw material molecules.

The invention discloses epoxy emulsion cured at room temperature with high aquosity and weather resistance as well as a preparation method of the epoxy emulsion. The epoxy emulsion comprises the following components in percentage by weight: 15-20 percent of E-20 epoxy resin, 5-10 percent of E-12 epoxy resin, 1.0-1.5 percent of benzoyl peroxide, 4.0-6.0 percent of methacrylic acid, 3.0-8.0 percent of hexafluorobutyl acrylate, 0.5-2.5 percent of diacetone acrylamide, 0.5-2.5 percent of adipic acid dihydrazide, 10-20 percent of ethylene glycol monobutyl ether, 5-10 percent of n-butyl alcohol, 3.5-5.5 percent of N,N-dimethylethanolamine and 22-40 percent of water. The preparation method comprises the following steps: firstly, adding E-20 epoxy resin, E-12 epoxy resin, n-butyl alcohol and ethylene glycol monobutyl ether to be evenly dissolved; then, dipping mixed solution of benzoyl peroxide, methacrylic acid, hexafluorobutyl acrylate, diacetone acrylamide and adipic acid dihydrazide to be reacted; and adding N,N-dimethylethanolamine and water to prepare the epoxy emulsion. The epoxy emulsion and the preparation method of the epoxy emulsion have the characteristics of weather resistance, abrasive resistance, water resisting property, alkali resistance, corrosion resistance, flexibility, washable resistance, environment protection and simple preparation process.

The invention discloses a flame-retardant and wear-resisting rubber material for a borehole cable sheath and a preparation method of the flame-retardant and wear-resisting rubber material. The flame-retardant and wear-resisting rubber material is prepared from nitrile rubber, natural rubber, triethyl citrate, benzoxazine resin, magnesium dimethacrylate, acetyl benzoyl peroxide, ethanol [2-[2-(2-methoxyethoxy)ethoxy]ethyl], triester with boric acid, gamma-aminopropyltriethoxysilane, polychlorinated terphenyl, dimethyldiethoxysilane, tricresyl phosphate, magnesium hydroxide, white jade powder, microcrystalline wax, hydrogenated rosin resin and the like. By matching the nitrile rubber with the natural rubber for use, the flame-retardant and wear-resisting rubber material has the advantages of good mechanical property and processing property, good oil resistance, wear resistance and chemical corrosion resistance, as well as heat resistance and low temperature resistance; by matching the tricresyl phosphate, the polychlorinated terphenyl and the magnesium hydroxide with sodium aluminum carbonate hydroxide for use, the fire-retardant property is enhanced; by adding the white jade powder, nano- tungsten boride and other fillers, high temperature resistance, wear resistance and other physical properties of the material are enhanced.

The invention discloses a composite board with electromagnetic shielding performance and a preparation method thereof, and relates to the technical field of new materials. The preparation method comprises the following steps of firstly mixing aminated graphene oxide adsorbing copper ions with polypropylene; then carrying out dry spinning to obtain modified polypropylene fibers, carrying out suspension polymerization on styrene, benzoyl peroxide, hydroxyethyl cellulose, maleic anhydride, starch, potassium periodate and acrylic acid as main raw materials to obtain modified hollow microspheres; and finally, mixing the modified polypropylene fibers with carbon fibers, polyester and the modified hollow microspheres, carrying out carding and web forming to obtain a mixed fiber felt, and carrying out needling reinforcement and hot pressing treatment on the mixed fiber felt to obtain the composite board with the electromagnetic shielding performance. The prepared composite board with the electromagnetic shielding performance has excellent electromagnetic shielding performance and noise reduction performance, and is low in density and good in strength.