294 results about "Benzoyl peroxide" patented technology

The invention provides a degradable environment-friendly packaging material and a preparation process thereof, and belongs to the technical field of packaging materials. The preparation method comprises the following steps: preparing the modified nano montmorillonite; preparing a composite antibacterial additive; preparing a barrier additive; and preparing the degradable environment-friendly packaging material. The preparation method comprises the following steps: by taking methacrylic acid (2-dimethylaminoethyl) ester and acrylic acid as raw materials, modifying nano-montmorillonite under the initiation of benzoyl peroxide, performing quaternary ammonium salinization, and performing in-situ synthesis of nano-zinc oxide on the surface of the quaternary ammonium salinized montmorillonite through a hydrothermal reaction to prepare the composite antibacterial additive. When the composite antibacterial additive is added into polylactic acid to prepare a packaging material, the growth of various microorganisms such as bacteria and fungi can be effectively inhibited, the packaging material is endowed with strong antibacterial protection capability, and the composite antibacterial additive has a more lasting antibacterial effect so as to prolong the antibacterial validity period of the packaging material.

The invention discloses unsaturated polyester resin for an unmanned aerial vehicle fuselage and a preparation method of the unsaturated polyester resin, and relates to the field of high polymer materials. When the unsaturated polyester resin for the unmanned aerial vehicle fuselage is prepared, a flame-retardant monomer reacts with 2-hydroxy-5-(hydroxymethyl) benzaldehyde to prepare a modified flame-retardant monomer; reacting cellulose with acrylic acid to obtain pre-modified cellulose; the pre-modified cellulose, 1-allyl-1, 1, 3, 3-tetramethyldisiloxane and chloroplatinic acid are subjected to a reaction, and modified cellulose is prepared; maleic anhydride, 5-(1H-imidazole-1-yl)-1, 3-phthalic acid, propylene glycol and the modified flame-retardant monomer are subjected to a reaction, and pre-polyester is prepared; and stirring the pre-polyester, zinc chloride, modified cellulose, benzophenone peroxide and styrene to obtain the anti-aging coating. The prepared unsaturated polyester resin for the unmanned aerial vehicle fuselage has good anti-aging, self-repairing, flame-retardant and self-cleaning performance.

The invention relates to the field of copper-clad plates, and discloses a low-dielectric-constant high-performance copper-clad plate and a preparation method thereof.The preparation method comprises the specific steps that epoxy resin, phenolic resin, polyphenyl ether modified resin, modified nano silicon dioxide and the like are taken and mixed to obtain a resin glue solution; impregnating glass fabric in the resin glue solution to obtain a prepreg; laminating prepregs, and covering copper foil for hot pressing; the polyphenyl ether modified resin comprises epoxy resin, diallyl cyanate and fluorine-containing polyphenyl ether resin prepared by reaction of polyphenyl ether, bisphenol AF and benzoyl peroxide; the modified nano silicon dioxide is prepared by reacting allyl glycidyl ether, vinyltriethoxysilane and phenyltris (dimethylsiloxane) silane, then grafting with a phosphorus-containing intermediate to prepare a modified additive, and grafting with nano silicon dioxide, and the phosphorus-containing intermediate is prepared by reacting phenylphosphoryl dichloride and eugenol. The copper-clad plate with high flame retardance, high peel strength, heat resistance and low dielectric constant is prepared.

The invention relates to the technical field of ABS (Acrylonitrile Butadiene Styrene) materials, in particular to an impact-resistant composite ABS plate and a preparation method thereof. The impact-resistant composite ABS plate is prepared from the following raw materials in parts by mass: 100 to 200 parts of emulsion ABS resin, 10 to 20 parts of butadiene monomer, 5 to 10 parts of methyl methacrylate, 1 to 5 parts of glycidyl acrylate, 1 to 5 parts of maleic anhydride, 5 to 15 parts of styrene, 1 to 5 parts of aminated silicon dioxide, 0.1 to 0.5 part of benzoyl peroxide, 0.1 to 0.3 part of triethylamine, 0.1 to 1 part of emulsifier and 0.01 to 0.1 part of first initiator, 0.05-0.2 part of a second initiator, 1-3 parts of oxidized polyethlene wax, 1-2 parts of a lubricant and 1-3 parts of an antioxidant. The invention solves the contradiction between the heat resistance and impact strength of the ABS resin, has obvious advantages compared with the traditional modification system, and completely meets the application requirements of the plate in a high-temperature vibration environment.

The invention relates to the technical field of high polymer materials, and discloses a high-durability pressure-sensitive adhesive with low VOCs release and a preparation method thereof.The high-durability pressure-sensitive adhesive is prepared from, by weight, 50-80 parts of acrylate copolymer, 0.5-5 parts of cross-linking agent, 10-30 parts of tackifying resin, 1-10 parts of inorganic filler, 0.1-2 parts of antioxidant and 20-50 parts of solvent. Wherein the tackifying resin is at least one of hydrogenated petroleum resin and glycerol ester of rosin, and the inorganic filler is one of nanoscale silicon dioxide and calcium carbonate. Butyl acrylate is used as a main monomer, 2-ethylhexyl acrylate is used as a comonomer, acrylic acid is used as a functional monomer, benzoyl peroxide is used as an initiator, free radical polymerization is carried out at the temperature of 60-85 DEG C under the protection of nitrogen for 4-8 hours, and a copolymer chain with the molecular weight distribution index (PDI) smaller than or equal to 2.5 is formed, so that the viscosity and elasticity of colloid can be balanced; the peeling strength and the weather resistance are improved, and the colloid is prevented from being too soft or embrittled.

The invention discloses a macroporous resin material and a preparation method thereof, and macroporous resin with high specific surface area and excellent adsorption performance is obtained through a specific modified acrylate polymeric monomer and a preparation method of the macroporous resin material. The method comprises the following steps: reacting quercetin, methyl vanillate and acryloyl chloride to prepare a modified acrylate polymeric monomer, mixing the modified acrylate polymeric monomer with polyvinyl alcohol, ethylene glycol dimethacrylate, dodecanol, benzoyl peroxide and the like, and carrying out suspension polymerization to prepare the macroporous resin material. The prepared macroporous resin material has excellent performance in the aspects of pore structure, polarity and the like, can be widely applied to the related fields of adsorption separation and the like, and provides a new thought and method for research and development of the macroporous resin material.

The invention discloses a preparation method of ulinastatin adsorption resin, and belongs to the technical field of adsorption resin. Comprising the following steps: (1) preparing a water phase: adding pure water, gelatin, cellulose, sodium chloride and lignin into a reaction kettle until the materials are fully dissolved; (2) preparing an oil phase, wherein the oil phase contains divinylbenzene, methyl acrylate, benzoyl peroxide, tert-butyl peroxy-2-ethylhexanoate, triallyl isocyanurate, tripropanol alkyl trimethacrylate and methylbenzene, and the oil phase is uniformly stirred and mixed with the methylbenzene and the trivinylbenzene, the methyl acrylate, the benzoyl peroxide, the tert-butyl peroxy-2-ethylhexanoate, the triallyl isocyanurate, the tripropanol alkyl trimethacrylate and the methylbenzene; (3) suspension polymerization: putting the oil phase into the water phase, and carrying out staged heating reaction; (4) amination reaction; (5) alkylation reaction; and (6) acid-base alcohol treatment. Compared with the existing resin, the resin disclosed by the invention has the characteristics of high adsorption exchange rate, high desorption rate and high desorption concentration on ulinastatin, and the yield of ulinastatin is increased by 1.17 times compared with that of D215 resin.

The invention relates to the technical field of polypropylene plastics, and particularly discloses a preparation method of a high-toughness polypropylene plastic bucket, which comprises the following steps: dissolving benzoyl peroxide in toluene, adding an organic silicon prepolymer with double bonds at one end, and uniformly mixing to prepare a mixed solution; adding polypropylene K8003 and polypropylene Z30S into a high-speed mixer, adding the mixed solution, and mixing at 105-120 DEG C for 5-15 minutes to obtain a mixture; carrying out extrusion granulation on the mixture to obtain modified polypropylene; adding the obtained modified polypropylene, PP-g-MAH, a hydrogenated styrene-butadiene block copolymer, vinyl-terminated silicone oil, modified titanium dioxide and an antioxidant into a high-speed mixer for mixing, performing extrusion granulation, and finally performing injection molding to obtain the high-toughness polypropylene plastic bucket. The polypropylene plastic bucket is prepared by combining the polypropylene K8003, the polypropylene Z30S, the modified titanium dioxide, the antioxidant, the PP-g-MAH, the hydrogenated styrene-butadiene block copolymer and other components, and the components interact with one another, so that the toughness and the impact resistance of the polypropylene plastic bucket are improved.

The invention discloses an anti-radiation fabric and a preparation method thereof, and relates to the technical field of fabric preparation. When the anti-radiation fabric is prepared, bismuth powder is pre-modified with (3-chloropropyl) trimethoxysilane and then reacts with an anti-aging agent to prepare modified bismuth powder; the preparation method comprises the following steps: enabling 4-aminophenylethanol and 4-(2-ethoxyl) benzaldehyde to react to prepare a flame-retardant monomer, and then enabling the flame-retardant monomer to react with isophorone diisocyanate and 1, 4-butylene glycol to prepare polyurethane; the preparation method comprises the following steps: reacting dimethylallylamine with 1, 3-bis (chloromethyl)-1, 1, 3, 3-tetramethyldisiloxane to obtain an antibacterial cross-linking agent; the modified bismuth powder, N, N-dimethylformamide, polyurethane, an antibacterial cross-linking agent and benzoyl peroxide are mixed to prepare a polyurethane coating, the outer side surface of polyester base cloth is coated with the polyurethane coating, drying is conducted, and the anti-radiation coating fabric is prepared. The anti-radiation fabric prepared by the invention has good anti-radiation, anti-light aging, flame-retardant and antibacterial properties.

The invention relates to the technical field of polymer fibers, and in particular to an impact-resistant ultra-high molecular weight polyethylene fiber and a preparation method thereof. The invention introduces maleic anhydride for graft modification, and benzoyl peroxide as an initiator can promote the formation of free radicals, so that active sites are generated on the ultra-high molecular weight polyethylene chain. Maleic anhydride as a polar monomer can react with the active sites to form a graft chain, thereby introducing polar groups to enhance the interaction force between molecules, and improving the toughness and processing fluidity of the material to a certain extent. In addition, white oil, decalin and xylene as solvents are conducive to the expansion and dispersion of the ultra-high molecular weight polyethylene, so that the modification process is more uniform and efficient. The toughening polymer component in the invention is synthesized by chemical reaction to obtain a cross-linked network structure with multiple functional groups and a high molecular weight, so that the external impact force can be effectively absorbed and dispersed, and the impact resistance of the material can be significantly improved.

The invention relates to the field of high-molecular materials, and provides a preparation method and application of a high-molecular degradable master batch, and the master batch is prepared from the following raw materials: maleic anhydride modified cellulose, modified starch, epoxy group-containing polymer modified polylactic acid, high-density polyethylene powder, a lubricant, a plasticizer, titanium dioxide particles and epoxidized soybean oil. The preparation method comprises the following steps: firstly, uniformly mixing a plurality of raw materials through a high-speed mixer, carrying out melt extrusion through an extruder, and then carrying out bracing, cooling, air drying, pelletizing, screening, drying and homogenizing to obtain the master batch. According to the master batch disclosed by the invention, the mechanical property, the processability, the thermal stability and the water resistance of the master batch are remarkably improved through the maleic anhydride modified cellulose, the benzoyl peroxide, the glycerol modified starch and the epoxy group-containing polymer modified polylactic acid, so that the comprehensive performance of the master batch is comprehensively optimized, and the master batch disclosed by the invention is excellent in comprehensive performance and has a wide application value.

The invention provides a PEF composite board and a preparation method, and relates to the technical field of insulation boards, the composite PEF board is formed by bonding a plurality of layers of board bodies, and comprises a base layer, the base layer is prepared from the following components in parts by weight: 58 to 60 parts of HDPE (High-Density Polyethylene), 4 to 6 parts of nano montmorillonite, 1 to 2 parts of benzoyl peroxide, 2 to 5 parts of BHT (Butylated Hydroxytoluene) heat stabilizer and antioxidant, 2 to 5 parts of maleic anhydride grafted polyethylene, 0.2 to 1 part of magnesium stearate and 0.3 to 0.8 part of epoxidized soybean oil; comprising a fireproof layer which is composed of the following components in parts by weight: 45-55 parts of HDPE and 5-15 parts of a phosphate ester environment-friendly flame retardant; comprising a thermal insulation layer and is prepared from the following components in parts by weight: 45-55 parts of HDPE, 5-10 parts of lignin fibers and 5-10 parts of a bio-based foaming agent formed by mixing sodium bicarbonate and citric acid. The invention has the beneficial effects that the mechanical strength, flame retardant property and thermal insulation effect of the PEF plate are obviously improved, the weather resistance and environmental protection property are enhanced, the optimal balance of high performance and cost effectiveness is realized, and the PEF plate is suitable for various building and industrial application environments.

The invention discloses a preparation method and application of a polymer lithium-conducting glue solution and a solid-state lithium battery, and the preparation method comprises the following steps: adding a lithium salt and a polymer monomer into a solvent according to a mass ratio of (5-10): (3-5) to form a mixed solution; adding an initiator, uniformly stirring to obtain a mixture glue solution, and carrying out heat treatment to obtain a polymer lithium-conducting glue solution; the initiator is selected from one or a mixture of two or more of azodiisobutyronitrile, benzoyl peroxide, potassium persulfate and ammonium persulfate in any proportion; the interface material which is formed in situ in the battery and has excellent mechanical property and lithium conducting capacity is used for reducing the operation pressure of the solid-state battery and improving the electrochemical performance of the solid-state battery.

The invention discloses a graphene modified epoxy resin-based packaging material and a preparation method thereof, and belongs to the technical field of preparation of epoxy molding compounds in electronic packaging. The preparation method comprises the following steps: mixing and dispersing a modified epoxy resin material, a curing agent, a curing accelerator, benzoyl peroxide and a modified heat-conducting filler according to a weight part ratio of (20-30): (16-19): (1-2): (0.4-0.6): (25-28) to form a dispersed material, pouring the dispersed material into a mold coated with a mold release agent, carrying out vacuum defoaming treatment at 45 DEG C for 30-35 minutes, and cooling to room temperature. And sequentially curing at 110 DEG C for 1-2 hours and curing at 130 DEG C for 2-3 hours to obtain the epoxy resin-based packaging material. The epoxy resin-based packaging material obtained by modifying the epoxy resin and the heat-conducting filler and then curing the epoxy resin and the heat-conducting filler has good heat-conducting property, impact resistance and insulating property.

The invention provides a drilling fluid flow pattern regulator suitable for Antarctic subglacial drilling and a preparation method and application thereof, and belongs to the technical field of polar region drilling. The flow pattern regulator is prepared from the following raw materials: 4-tert-butyl styrene, carboxylic acid, an acrylate monomer, oleyl alcohol, concentrated sulfuric acid and an initiator. The carboxylic acid is one of ricinoleic acid or phthalic acid; the acrylic ester monomer is one of acrylic acid-2-hydroxyethyl ester or 2-acrylic acid-2-hydroxy-3-phenoxy propyl ester, and the acrylic ester monomer is one of acrylic acid-2-hydroxyethyl ester and 2-acrylic acid-2-hydroxy-3-phenoxy propyl ester; and the initiator is one of azodiisobutyronitrile or benzoyl peroxide. The flow pattern regulator is simple in raw material composition and preparation method and low in cost. The flow pattern regulator can effectively improve the ultralow-temperature rheological property of the drilling fluid, enables the drilling fluid to have the advantages of low viscosity, high dynamic shearing force, chip carrying (ice chips and rock chips), excellent suspension performance and the like at the ultralow temperature, and is suitable for under-ice drilling in the Antarctic pole.

The present invention relates to the field of copper clad laminates, and discloses a copper clad laminate with low dielectric constant and high performance and a preparation method thereof. The specific steps are as follows: taking epoxy resin, phenolic resin, polyphenylene ether modified resin, modified nano-silica, etc. and mixing them to obtain a resin glue solution; impregnating glass fiber cloth in the resin glue solution to obtain a prepreg; taking the prepregs and laminating them and hot pressing them with copper foil; the polyphenylene ether modified resin includes epoxy resin, diallyl cyanate, and a fluorinated polyphenylene ether resin prepared by reacting polyphenylene ether, bisphenol AF, and benzoyl peroxide; the modified nano-silica is prepared by reacting allyl glycidyl ether and vinyltriethoxysilane with phenyltris(dimethylsilyl)silane, and then grafting it with a phosphorus-containing intermediate to form a modified additive, and grafting the modified additive with nano-silica. The phosphorus-containing intermediate is prepared by reacting phenylphosphoryl dichloride and eugenol. A copper clad laminate with high flame retardancy, high peel strength, and heat-resistant low dielectric constant is prepared.

The invention relates to the technical field of anti-aging agents, and discloses a preparation method of an anti-aging agent and application of the anti-aging agent in plastics, the anti-aging agent contains styrene groups, and can be well fused and grafted with polyolefin such as polypropylene under the action of an initiator dibenzoyl peroxide or dicumyl peroxide, so that the anti-aging agent has a good anti-aging effect. The influence on the mechanical strength of the polyolefin plastic is very small, and the problem that physical blending can cause great influence on the mechanical strength and the use performance of the plastic can be avoided. Meanwhile, a phenol triazine structure contained in the anti-aging agent has a unique ultraviolet absorption effect, and a hindered amine structure is contained, so that the photo-oxygen degradation reaction of the polyolefin plastic can be inhibited through multiple ways of capturing free radicals and decomposing hydroperoxide, and through an accelerated aging experiment of xenon lamp irradiation, the plastic keeps very high tensile strength, and the anti-aging effect is good. And excellent thermo-oxidative aging resistance and ultraviolet radiation aging resistance are shown.

The invention provides a heat-conducting water-blocking sealant, a preparation method thereof and a photovoltaic module. The heat-conducting and water-blocking sealant is prepared from the following raw materials in parts by mass: 50 to 100 parts of methyl vinyl siloxane, 50 to 100 parts of lignin, 10 to 50 parts of diamond particles and / or diamond alloy particles, 0.5 to 10 parts of a first cross-linking agent, 0.5 to 10 parts of a second cross-linking agent, 0.5 to 5 parts of a coupling agent and 0.05 to 1 part of a catalyst, wherein the first cross-linking agent is prepared from one or more of dicumyl peroxide, benzoyl peroxide, toluene diisocynate and hexamethylene diisocyanate; the second cross-linking agent comprises polymethylhydrosiloxane. The heat-conducting and water-blocking sealant disclosed by the invention has relatively good heat-conducting property, water-blocking property and electrical insulation property.

The invention provides a preparation method of high-impact MBS (methyl methacrylate-butadiene-styrene) resin with a gradient shell structure, which comprises the following steps: adding a butadiene / styrene core, methyl methacrylate, styrene and a proper amount of solvent into a reactor, uniformly mixing, heating to 110-130 DEG C, adding 20-40% of composite initiator, and carrying out polymerization reaction for 0.5-2 hours; cooling to 85-95 DEG C, adding 20-40% of a composite initiator, and continuously reacting for 0.5-2 hours; cooling to 60-70 DEG C, adding the residual composite initiator, and continuously reacting for 2-5 hours; and after the reaction is finished, carrying out post-treatment on the product to obtain the high-impact MBS resin. The composite initiator is composed of azodiisobutyronitrile and benzoyl peroxide, and the benzoyl peroxide accounts for 20-40% of the total amount of the composite initiator. The MBS resin with the gradient shell structure is prepared by adopting a step-by-step polymerization method and controlling the initiation rate, the bottleneck problem of toughness contradiction of the MBS resin with the core-shell structure is solved, and the MBS resin with high light transmittance and super toughness is obtained.

The invention belongs to the field of pharmaceutic adjuvants, and particularly relates to a method for preparing sodium polystyrenesulfonate resin through a centrifugal interfacial membrane emulsification technology and application of the sodium polystyrenesulfonate resin. The method comprises the following steps: by taking a mixed solvent of styrene, divinylbenzene and benzoyl peroxide as a dispersion phase and a polyvinyl alcohol solution as a continuous phase, carrying out centrifugal interfacial membrane emulsification, then carrying out suspension polymerization reaction to obtain polystyrene-divinylbenzene microspheres with narrow particle size distribution, and finally, carrying out sulfonation reaction and alkali exchange to obtain the polystyrene-divinylbenzene composite microsphere. The final product sodium polystyrenesulfonate resin is obtained. The resin prepared by controlling the centrifugal rotating speed, the centrifugal time and the using amount of the dispersing agent, the cross-linking agent and the sulfonating agent and combining a centrifugal interfacial membrane emulsification technology is in a dry golden brown powder shape, the average particle size is 60-100 microns after the resin is dispersed in water, and particles of the resin are uniformly distributed and are of a spherical structure. Meanwhile, the preparation method is simple in preparation process, short in operation time, low in energy consumption, good in economic benefit, suitable for industrial production and wide in market application prospect.

The invention relates to a method for efficiently preparing hydroxylamine hydrochloride. The method comprises the following steps: mixing a diacetylmonoxime solution and a hydrochloric acid solution, pretreating through a pressurized nano-bubble fluidized bed, and carrying out reaction distillation under heating and pressurizing; after the reaction is finished, cooling reaction liquid, performing primary filtration and suction filtration through cross-flow filtration equipment, and collecting hydroxylamine hydrochloride crystals; and washing the crystal with absolute ethyl alcohol, recovering ethyl alcohol through cross-flow filtration equipment, and finally freeze-drying to obtain the high-purity hydroxylamine hydrochloride. The preparation method comprises the following steps: stirring quinoline-8-yl acrylate, tributyltin acrylate, 4-vinyl benzocyclobutene, ethanol and benzoyl peroxide to obtain a mixed solution; immersing the PTFE membrane subjected to low-temperature plasma pretreatment into the mixed solution, and then carrying out ultrasonic cleaning and vacuum drying to obtain a polymer modified PTFE membrane; the hydroxylamine hydrochloride prepared by the method disclosed by the invention has relatively high purity and yield, and meanwhile, the content of heavy metal ions and the content of water are effectively reduced.

The invention discloses a self-expanding water shutoff material for tunnels and a preparation method of the self-expanding water shutoff material, and belongs to the field of polymer composite materials. Modified polyurethane in the self-expanding water shutoff material is prepared through vacuum dehydration of polyether glycol, chain extension of diisocyanate, reaction of a carboxyl-containing chain extender and acetone, dropwise addition and grafting of nano silicon dioxide dispersion liquid, neutralization of triethylamine and reduced pressure distillation. The modified epoxy acrylate is prepared by mixing epoxy resin and methyl methacrylate, stirring a silane coupling agent and an absolute ethyl alcohol solution, initiating polymerization by benzoyl peroxide, dropwise adding nano-montmorillonite dispersion liquid for reaction, stirring acrylic acid and a polymerization inhibitor hydroquinone, and performing reduced pressure treatment. The material formula comprises the two modified macromolecules, super absorbent resin, a filler, a plasticizer, an initiator, a cross-linking agent, a defoaming agent and deionized water. The prepared material has the advantages of high expansion rate, excellent water resistance, strong adhesive property and controllable curing time, and is suitable for the scenes of tunnel water inrush plugging, lining crack repairing, water-rich fault zone advanced grouting and the like.

The invention discloses cold-resistant and tear-resistant coating resin and a preparation method thereof, and relates to the technical field of coatings. The invention discloses cold-resistant and tear-resistant coating resin. The invention relates to a water-based paint, which is prepared from the following raw materials in parts by weight: 40 to 60 parts of modified epoxy resin, 15 to 25 parts of poly (hexanediol adipate), 5 to 10 parts of modified nano silicon dioxide, 8 to 15 parts of diphenylmethane diisocyanate, 3 to 8 parts of trimethylolpropane, 10 to 20 parts of methyl methacrylate, 8 to 15 parts of butyl acrylate, 0.5 to 2 parts of benzoyl peroxide and 0.2 to 0.8 part of dibutyltin dilaurate. The invention relates to an anti-aging coating which comprises the following components in parts by weight: 20-30 parts of a silane coupling agent, 1-3 parts of a silane coupling agent KH-550, 0.3-1 part of an anti-aging agent 264, 5-12 parts of dioctyl phthalate and 20-35 parts of a mixed organic solvent. The raw materials are scientifically proportioned, and the cold resistance and tear resistance of the coating are remarkably improved through the synergistic effect of the modified epoxy resin and the modified nano silicon dioxide; water is strictly controlled in the whole process, side reaction is avoided, and stable resin structure is guaranteed; the preparation steps are clear and definite, the repeatability is high, the solvent system adaptability is good, construction is convenient and fast, and the method is suitable for base material protection in various low-temperature scenes.

The invention discloses a polyphenyl ether modified epoxy resin-based copper-clad plate, and particularly relates to the technical field of copper-clad plates, the polyphenyl ether modified epoxy resin-based copper-clad plate comprises a glue solution, an electronic glass fabric and a copper foil, and the glue solution comprises the following raw materials: modified polyphenyl ether, an inorganic filler, a curing agent, a flame retardant and the balance of epoxy resin. The bisphenol A epoxy resin, toluene and benzoyl peroxide are utilized to treat polyphenyl ether, the molecular weight of the polyphenyl ether can be reduced, the crosslinking property of the polyphenyl ether and the epoxy resin is better, then paraformaldehyde is utilized to catalyze and modify the polyphenyl ether, the terminal of the polyphenyl ether is grafted with hydroxymethyl, and the polyphenyl ether is grafted with polyphenyl ether. The compatibility and interface bonding force of the obtained hydroxymethylated polyphenyl ether and epoxy resin are good, the dielectric loss performance and toughness of the copper-clad plate can be effectively improved, and anhydrous aluminum silicate of an amorphous layered gap structure formed through specific activation treatment can be formed during temperature-controlled calcination of kaolin. The dielectric constant and the dielectric loss of the copper-clad plate can be obviously reduced.

A foaming cleansing composition includes 2.5% to 12.0% Benzoyl Peroxide, at least one acrylate polymer, Hyaluronic Acid, Niacinamide, a combination of anionic and amphoteric surfactants, expressly excluding alkyl polyglucosides, and water. The composition provides a unique textural feel as compared with existing benzoyl peroxide containing products, and in particular, is formulated as a light mousse-type architecture with viscosity which is retained on skin upon application and resists dripping, even in the shower. The composition is shelf stable and stable on application, demonstrating a viscosity of about 18-25 UD (Viscosity Rheomat M3 Spindle), and a pH about 5.5 to about 6.5.

The invention relates to a preparation method of a high-performance sodium ferric phosphate positive electrode material, and belongs to the technical field of preparation of electrochemical energy storage and secondary battery electrode materials. The preparation method comprises the following steps: chelating a manganese source, an iron source and a vanadium source with a chelating agent, mixing with a phosphorus source solution and a sodium source solution, and sintering to obtain an active material; and grinding and uniformly mixing the prepared active material, carbon black and a polytetrafluoroethylene binder, and coating an aluminum foil with the mixture. According to the invention, the efficient chelating synergist is prepared from the vinyl guanamine, the gadoleic acid quinoline ester, the 2, 4, 6-triallyloxy-1, 3, 5-triazine and the benzoyl peroxide, so that the electrochemical performance, including high-rate discharge performance and cycle stability, of the sodium iron phosphate positive electrode material is improved.

The invention relates to the technical field of PCB (Printed Circuit Board) photoresist materials, in particular to a preparation method of alkali-soluble resin for PCB photoresistance, which comprises the following steps: preparing raw materials and monomer raw materials: methacrylic acid, styrene, hydroxyethyl acrylate and maleic anhydride-perfluoroalkyl vinyl ether copolymer, initiators: benzoyl peroxide and azodiisobutyronitrile, a chain transfer agent: lauryl mercaptan, and a solvent: 1, 2-dichloroethane; the crosslinking auxiliary agent is N-hydroxymethyl acrylamide and a hindered amine light stabilizer, the solvent is a mixed solvent of toluene and acetone, and the monomer raw materials are subjected to reduced pressure distillation to remove impurities and moisture. According to the preparation method of the alkali-soluble resin for the PCB photoresist, the molecular weight and molecular weight distribution of the alkali-soluble resin can be accurately controlled by utilizing an active free radical polymerization technology, so that the alkali-soluble resin is higher in alkali solubility, higher in dissolution rate and capable of being rapidly and completely dissolved; and the developing efficiency and the developing precision in the manufacturing process of the PCB photoresist are greatly improved, so that the quality and the stability of a photoetching pattern are improved.

This invention relates to the field of packaging film technology and provides a low-temperature polyolefin packaging film and its preparation method. The packaging film comprises a three-layer co-extruded structure consisting of an outer layer, a middle layer, and an inner layer. The components of each layer are as follows: Inner layer: metallocene polyolefin, high-performance polypropylene, modified lignin nanofibers, and erucamide / silica composite microspheres; Middle layer: PCR, modified nano-kaolinite, and trimethylolpropane triacrylate; Outer layer: PCR, modified tourmaline nanotubes, benzoyl peroxide microcapsules, and polydopamine-coated chitosan. This invention uses PCR, which is more energy-efficient and environmentally friendly. The addition of modified lignin nanofibers to the inner layer improves tensile strength; the addition of modified nano-kaolinite to the middle layer improves thermal shrinkage; the addition of modified tourmaline nanotubes to the outer layer lowers the crosslinking reaction initiation temperature and improves shrinkage; and the addition of polydopamine-coated chitosan allows for reversible recombination upon damage, improving puncture strength.

The invention discloses a temperature self-adjusting material and application thereof, and belongs to the technical field of advanced materials, heat management and light management, the temperature self-adjusting material comprises a radiation refrigeration inorganic coating and a thermosensitive coating; the radiation refrigeration inorganic coating comprises inorganic high-reflectivity nanoparticles and an inorganic silicate adhesive; the thermosensitive coating is prepared from 2-phenylamino-3-methyl diethylaminofluoroalkane, acrylic resin and benzoyl peroxide. The invention further discloses a preparation method of the thermosensitive coating. The photo-thermal management capacity of the building material is optimized by introducing the radiation refrigeration coating and the thermosensitive coating with the self-adjusting capacity on the surface of the building base material, the building material is endowed with different optical capacity expressions at different temperatures, and therefore the adjustable radiation refrigeration / solar heating function is achieved.

The invention provides an edge-corrosion-resistant auxiliary agent for a cathode electrophoretic coating and a preparation method of the edge-corrosion-resistant auxiliary agent, and belongs to the technical field of cathode electrophoretic paints.The preparation method comprises the following steps that amino-terminated nitrile rubber and polypropylene glycol diglycidyl ether are subjected to an addition reaction in a solvent, and epoxy resin modified amino-terminated nitrile rubber is obtained; mixing the epoxy resin modified amino-terminated nitrile rubber with a solvent, adding a mixture of the solvent and benzoyl peroxide into the mixture, and carrying out polymerization reaction to obtain repolymerized epoxy resin modified amino-terminated nitrile rubber; and sequentially adding acid water and deionized water, and stirring to obtain the edge corrosion resistant auxiliary agent. According to the cathode electrophoretic paint, the amino-terminated nitrile rubber is modified by the polypropylene glycol diglycidyl ether, so that the mechanical property and the flexibility of the cathode electrophoretic paint are improved; and then benzoyl peroxide is used for initiating repolymerization of the epoxy modified nitrile rubber to reduce the fluidity of the electrophoretic paint in the baking process, so that the edge corrosion resistance of the cathode electrophoretic paint is improved.