45 results about "Benzyl peroxide" patented technology

The invention relates to a preparation method of phosphorus-containing flame-retardant polymethyl methacrylate resin. A formula for preparing the phosphorus-containing flame-retardant polymethyl methacrylate resin comprises the following components by weight percent: 17.92 to 22.65 percent of tri((6-oxo-6H-dibenz [c,e][1,2] oxaphosphorin-6-yl)methyl) phosphate, 78.16 to 82.39 percent of methyl methacrylate and 0.16 to 0.76 percent of benzoperoxide. The preparation method comprises the following steps: adding a formula amount of methyl methacrylate, tri((6-oxo-6H-dibenz [c,e][1,2] oxaphosphorin-6-yl)methyl) phosphate and initiator benzoperoxide into a reaction container, stirring about 52 min at 85.2 DEG C, allowing the system to be viscous, then pouring a prepolymer into a mold, cooling to about 40 DEG C, performing the heat insulation for 6h, then heating to 80 DEG C, and performing the heat insulation for 12h to obtain the flame-retardant polymethyl methacrylate resin.

The invention provides a thermoplastic-elastomer-modified polymethyl methacrylate color antiskid paint. The paint is of a three-component reaction type and comprises a component A, a component B and a component C, wherein the ratio of the component A to the component B to the component C is 100 to (50-200) to (5-30); and the paint is formed by mixing the three components. The component A is MMA resin liquid modified by thermoplastic elastomer and tackifying resin, the component B is graded waste tire rubber particles, and the component C is formed by mixing and dissolving 2 to 3 parts of benz peroxide and 10 to 30 parts of dibutyl phthalate. The thermoplastic-elastomer-modified polymethyl methacrylate color antiskid paint has beneficial effects that an energy-saving, high-efficient and durable color antiskid paint for roads and bridges is provided, the cost can be reduced, the energy consumption can be reduced, the economic benefit and social benefit can be improved, and various technical indexes of the paint can reach or exceed that of the color antiskid paint sold in the market.

The invention provides a polyphenyl thioether composite material for 3D printing and a preparation method thereof. The preparation method comprises the following steps: dissolving N-vinyl-2-pyrrolidone in ethanol, adding benzoperoxide, standing at room temperature, sequentially adding terephthalic acid and ethyl alpha-cyanoacrylate, stirring at room temperature, adding polyphenyl thioether particles, heating while stirring, and cooling to room temperature, thereby obtaining the polyphenyl thioether composite material for 3D printing. The polyphenyl thioether composite material can be used for 3D printing within the temperature range of 40-70 DEG C, can not block the 3D printer injector, and overcomes the defect that the polyphenyl thioether consumable 3D printing needs to melt the high-molecular polymers under high-temperature conditions; and the preparation method has the advantages of simple technique and low production cost, is convenient for popularization and application, and enriches the varieties of the 3D printing consumables.

The invention discloses steel wire mesh skeleton composite tube. The tube is prepared from the following raw materials in parts by mass: 15-55 parts of HDPE, 3-18 parts of LDPE, 6-24 parts of LLDPE, 2-20 parts of EVA, 4-18 parts of drawing-grade polypropylene, 5-10 parts of montmorillonite, 10 parts of white carbon black, 1-10 parts of barium sulfate, 10-20 parts of graphite, 5-15 parts of carbon nanotube, 8-20 parts of polyimide fibers, 0.5-4 parts of a silane coupling agent KH151, 1-2 parts of diphenyl ketone, 1-10 parts of a composite lubricant, 0.01-0.2 part of nano-silver, 0.5-5 parts of flavonol, 0.5-5 parts of zinc stearate, 1-5 parts of polyacrylamide, 5-10 parts of methyl methacrylate, 1-5 parts of 2,4-dichlorobenzoyl peroxide and 10-20 parts of 6-ethoxy-2,2,4-trimethyl-1,2-dihydro-quinoline. The mechanical properties, impact property, deformation degree, aging resistance and stain resistance of the tube prepared from the raw materials are significantly and greatly increased.

The invention discloses a vulcanizer of resin-based composite material, specific rack of repairing machine and manufacturing method, which comprises the following parts: 36-58% resin, 35-58% fiber, 1-2% hardener dibenzoyl peroxide, 1-2% accelerant, 0.5-2.5% aging retarder, 1-3% color paste and 0.5-4% fire retardant.

The invention discloses a manufacturing method of a resin for high-frequency copper clad plates, which comprises the following steps: adding toluene and benzoperoxide into a reaction kettle, and dissolving by stirring; adding polyphenylether and allyl bisphenol A, heating the reaction kettle to 90 DEG C, and reacting for 60 minutes; adding dicumyl peroxide and triallyl cyanate, and continuing reaction for 90 minutes while keeping the temperature at 90 DEG C; and after the reaction time finishes, immediately starting a cooler to cool to 50 DEG C below. The prepared resin effectively lowers the dielectric constant and dielectric loss of the copper clad plate, wherein the dielectric constant is lowered from 4.8 to 3.4, and the dielectric loss is lowered from 0.02 to 0.01 below. The resin is suitable for requirements of high-frequency electronic materials. The manufacturing technique is suitable for the existing copper clad plate production technique, and reduces the equipment investment. The copper clad plate has better processibility than other high-frequency plates.

The invention relates to a microneedle patch for relieving skin acnes and a preparation method thereof. The microneedle patch comprises needle points and a base with holes, wherein raw materials of the needle points comprise soluble materials and medicine for relieving the skin acnes; raw materials of the base with holes comprise an excipient, a penetrating agent and medicine for relieving the skin acnes; the medicine for relieving the skin acnes is in the needle points and the base with the holes and is respectively and independently selected from at least one of vitamin A type medicine, radix salviae miltiorrhizae extracts, chrysanthemum flower extracts, benzoperoxide, eugenol, aloe extracts, azelaic acid and salicylic acid; the soluble material comprises at least one of hyaluronic acidand hyaluronate; and the excipient comprises polyvinyl alcohol and lactic acid/hydroxyacetic acid copolymers. The microneedle patch can fast achieve good anti-acne effects, and can also effectively prevent the pore blockage and secondary infection.

Disclosed herein is a water-soluble chelated complex of a co-polymer of N-acetylglucosamine-glucosamine pyrithione sale (AGP). This composition is characterized by a highly viscose texture with excellent surface properties and extremely long acting antimicrobial activity. AGP's antimicrobial activity against acne bacteria has been found superior to the benzyl peroxide the leading acne medication. In addition, AGP has been proven to be effective against many pathogenic yeast. AGP has the potential to be useful as a long acting broad-spectrum antimicrobial composition in a variety of dermatological medicaments and cosmetics.

The invention discloses a reinforcing agent prepared from fly ash, which includes component A and component B. The component A is composed of the following raw materials in parts by mass: 100 parts of unsaturated polyester resin; crosslinking agent: 0.5 ~2 parts; white carbon black: 0.5~2.5 parts; dimethylaniline: 0.5~1.5 parts; fly ash: 300~450 parts; the B component includes the following raw materials in parts by mass: 50% benzyl peroxide Acyl paste: 50 parts; one or a mixture of heavy calcium, talc, kaolin: 50 parts. Prepare component A and component B separately. After the preparation is completed, sample and mix component A and component B at a mass ratio of 100:2-10 to obtain the final product. The reinforcing agent prepared from fly ash has the advantages of simple preparation process, low cost, economic benefits, environmental protection and the ability to turn waste into wealth.

The invention discloses an antistatic electric power protection tube and a preparation method thereof, and belongs to the technical field of electric power tubing. The preparation method of the electric power protection tube comprises the following steps: 1, weighing raw materials; 2, adding polyethylene resin, ethylene propylene diene monomer, morpholine tetrasulfide, magnesium oxide, p-tert-butylphenol formaldehyde resin, 2, 4-dichlorobenzoyl peroxide and sodium carbonate into a mixing machine, performing mixing, and obtaining a premix; 3, adding modified graphene, di-n-octyltin dilaurate and dilauryl thiodipropionate into the premix, and obtaining a mixture; 4, carrying out extrusion granulation on the mixture, and carrying out extrusion molding, cooling and cutting to obtain the antistatic electric power protection tube, wherein the modified graphene has good antistatic capability and meets the requirements; in addition, the modifier is a flame-retardant component, so that a better flame-retardant effect can be achieved without adding a flame retardant, and the mechanical properties and processability of the power protection tube are maintained.

The invention discloses a formula and a use method of a lens anti-fog wet tissue. According to the formula and the use method of the lens anti-fog wet tissue, the lens anti-fog wet tissue is preparedfrom the following raw materials: 1-3 parts of acrylic acid, 8-10 parts of methyl methacrylate, 2-5 parts of ethyl methacrylate, 8-10 parts of butyl methacrylate, 60-80 parts of butanone, 2-5 parts ofbenzoyl peroxide, 10-20 parts of a silver ion antibacterial agent, 30-50 parts of ethanol and 1-3 parts of fatty alcohol-polyoxyethylene ether sodium sulfate. Ethyl methacrylate mixed with fatty alcohol-polyoxyethylene ether sodium sulfate can be effectively attached to the surfaces of the lenses to prevent the lenses from fogging to influence the sight of people, so that the personal safety of people wearing the lenses is improved; silver ion disinfection powder is added into the anti-fog wet tissue, so that the surface of the lens is sterilized and disinfected while the lens is placed in the anti-fog agent and fogged, the face of a human body is prevented from being in contact with infectious microbes, the personal safety of people during use is guaranteed, and the product characteristics of the anti-fog wet tissue are improved.

The invention relates to the field of organic synthesis, in particular to a method for preparing 2-bromo-fluorobenzyl bromide, which comprises the following steps: (1) in the presence of an organic or inorganic solvent, adding a 2-bromo-6-fluorotoluene compound and 40-mass-percent hydrobromic acid and dripping 30-mass-percent hydrogen peroxide under a lighting condition, and reacting for 6 to 24 hours, wherein the molar ratio of 2-bromo-6-fluorotoluene to HBr is 1:(1-3.5) and the molar ratio of the 2-bromo-6-fluorotoluene to H2O2 is 1:(1-3.5); and (2) washing the reaction solution with saturated sodium sulfite solution and water, drying the reaction solution with anhydrous sodium sulfate, evaporating solvent under a reduced pressure, and obtaining the 2-bromo-6-fluorotoluene compound by silica gel column chromatography. In the method, the hydrobromic acid and hydrogen peroxide are used in place of the traditional N-bromosuccinimide brominating agent, so the production cost is reduced; and lighting is used in place of a benzoyl peroxide initiator, so method has the advantages of mild reaction conditions, high product purity, high yield and the like.

The invention discloses an air-brake hose material which comprises the following raw materials in parts by weight: 93-100 parts of ethylene-propylene-diene monomer rubber 4770R, 7-10 parts of polydicyclopentadiene, 4-5 parts of polyvinylidene fluoride, 2-3 parts of polyvinyl alcohol, 1-2 parts of fenbendazole, 4-6 parts of poly(butyl acrylate), 2-3 parts of monopotassium phosphate, 0.2-0.4 part of trimethylhexamethylenediamine, 2-4 parts of calcium aluminate, 4-7 parts of carbon fiber, 20-24 parts of carbon black, 1-1.6 parts of 2,4-dichlorobenzoyl peroxide, 0.8-1 part of an accelerating agent CSB, 0.4-1 part of an accelerating agent CPB and 16-27 parts of a composite filler. An air-brake hose provided by the invention is good in positioning performance, high in overall strength and good in aging resistance and corrosion resistance.

The invention discloses a high-performance control cable which comprises a cable core. An insulating layer, a temperature decreasing lining layer, a flame retardant layer, a metal armoring layer and a sheath layer are sequentially arranged outside the cable core. The insulating layer is made of a low-smoke zero-halogen polyolefin material which is prepared from, by weight, polyvinyl chloride, a propylene-vinyl copolymer, methyl vinyl silicone rubber, tetra propyl phenylsulfonyl, isopropyl tri(pyrophosphoric acid) titanate, caprolactam, magnesium oxide, 2,4-dichlorobenzoyl peroxide, alkylated diphenylamine, 2-mercaptobenzimidazol zincate, magnesium stearate, kieselguhr, ceric oxide, polyvinyl chloride nitrile fibers, anti-aging agents and antioxidants. The cable is good in thermal conductivity and excellent in flame retardant performance.

The invention relates to a high-strength composite fiber which is prepared from the following raw materials in parts by weight: 1-3 parts of silver nitrate, 6-10 parts of benzoperoxide, 5-9 parts of dolomite, 4-8 parts of limestone, 7-11 parts of brucite fiber, 3-8 parts of aluminum oxide, 6-11 parts of calcium oxide, 4-8 parts of stearic acid, 5-10 parts of boron fiber, 2-6 parts of polytetrafluoroethylene, 5-11 parts of lanolin wax polyoxypropylene ether and 8-13 parts of trimethylolpropane glycidol ether. The high-strength composite fiber has the advantages of high strength, uniform fiber distribution, favorable elasticity and favorable comprehensive properties.

A disclosed modified resin-type waterproof paint is prepared from the following raw materials in parts by weight: 1.5-2.8 parts of chlorinated paraffin, 2.3-3.5 parts of cobalt trifluoroacetylacetonate, 3.8-6.5 parts of phenolic resin, 1.2-2.1 parts of fatty alcohol polyoxyethylene ether, 5-10 parts of ethanol, 2.5-3.6 parts of thulium trifluoroacetylacetonate, 1.3-3.6 parts of methyl methacrylate-butadiene-styrene terpolymer and 2.5-3.5 parts of tert-butyl peroxybenzoate. Compared with conventional waterproof paints, the modified resin-type waterproof paint is used for water prevention of buildings such as basements, toilets, kitchens, pools and the like, does not need heating when used, helps to reduce environmental pollution, is low in manufacturing cost, simple to construct and operate, good in waterproof performance when constructed on the base of multiple wet or dried materials, free of toxicity and harm and long in service life, and is a relatively ideal waterproof material.

The invention discloses a preparation method of an oil-resistant cable sheath material, which comprises the following steps: compounding 45-67 parts by weight of chloroprene rubber and 8-23 parts by weight of polyvinyl chloride in a Banbury mixer, keeping the temperature, and cooling to room temperature; adding 12-20 parts of decabromodiphenyl oxide, 1-9 parts of ethylene thiourea, 5-15 parts of benzoperoxide, 8-21 parts of aluminum hydroxide, 1-13 parts of dioctyl epoxytetrahydrophthalate and 4-17 parts of polyvinyl butyral, compounding for 3-5 minutes adding 3-14 parts of lubricant and 3-16 parts of antioxidant 1010, and compounding for 2-4 minutes; and carrying out thin passing in an open mill, and extruding through a double screw extruder. The cable sheath material has the advantages of higher volume resistivity, higher vertical burning grade and higher oil resistance. The method has the advantages of simple preparation technique and reasonable time and temperature control settings, and can be widely used in industrial production.