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235 results about "Benzoyl peroxide" patented technology

This medication is used to treat mild to moderate acne. It may be used in combination with other acne treatments.

Impact-resistant composite ABS plate and preparation method thereof

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.
Owner:CHANGZHOU SUNPLAS CO LTD

High-durability pressure-sensitive adhesive with low VOCs release and preparation method thereof

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.
Owner:SHANGHAI NAR INDAL

High-toughness polypropylene plastic bucket and preparation method thereof

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.
Owner:GUANGXI WUZHOU RIXIN PLASTICS IND CO LTD

Anti-radiation fabric and preparation method thereof

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.
Owner:南通科晟纺织有限公司

Preparation method and application of polymer lithium-conducting glue solution and solid-state lithium battery

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.
Owner:SICHUAN UNIV

Graphene modified epoxy resin-based packaging material and preparation method thereof

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.
Owner:CHAOHU UNIV

Drilling fluid flow pattern regulator suitable for South Pole under-ice drilling as well as preparation method and application of drilling fluid flow pattern regulator

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.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

A low dielectric constant high-performance copper clad laminate and its preparation method

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.
Owner:SHENZHEN LINGHANGDA ELECTRONICS CO LTD

Preparation method of anti-aging agent and application of anti-aging agent in plastics

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.
Owner:JIANGXI LIHE PIPE IND CO LTD

Heat-conducting water-blocking sealant, preparation method thereof and photovoltaic module

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.
Owner:TONGWEI SOLAR ENERGY (CHENGDU) CO LID

Method for preparing high-impact MBS (methyl methacrylate-butadiene-styrene) resin with gradient shell structure through step-by-step polymerization

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.
Owner:BINZHOU YONGHONG NEW MATERIAL TECH CO LTD

Method for efficiently preparing hydroxylamine hydrochloride

PendingCN120440851AHydroxylamineBenzoyl peroxideHydroxylamine
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.
Owner:ZHEJIANG JINHUA NEW MATERIALS

Self-expanding water shutoff material for tunnel and preparation method of self-expanding water shutoff material

PendingCN120574477AEpoxyBenzoyl peroxide
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.
Owner:CHONGQING JIAOTONG UNIV +1

Cold-resistant and tear-resistant coating resin and preparation method thereof

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.
Owner:HEBEI HOPE CHEM CO LTD

Polyphenyl ether modified epoxy resin-based copper-clad plate and preparation method thereof

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.
Owner:JIANG SU YAO HONG ELECTRONICS CO LTD

Benzoyl peroxide foaming cleanser

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.
Owner:LOREAL SA

Low temperature polyolefin packaging film and method of making same

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.
Owner:ZHEJIANG ZHONGCHENG PACKING MATERIAL

Temperature self-adjusting material and application thereof

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.
Owner:FUJIAN AGRI & FORESTRY UNIV

Edge corrosion resistant auxiliary agent for cathode electrophoretic coating and preparation method of edge corrosion resistant auxiliary agent

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.
Owner:WUHAN SHUANGHU PAINT CO LTD

Two-component spunbonded non-woven fabric and production process thereof

The invention provides a bi-component spun-bonded non-woven fabric and a production process thereof, and belongs to the technical field of non-woven fabrics. The non-woven fabric is composed of bi-component fibers of a skin-core composite structure, the skin layer of the bi-component fibers is composite polypropylene, and the core layer of the bi-component fibers is polycaprolactam; the preparation method of the composite polypropylene comprises the steps of polypropylene hydrophilic treatment, starch functional treatment and compounding. The hydrophilic treatment of polypropylene comprises the following steps: adding benzoyl peroxide, an antioxidant and ethylene bis stearamide into polypropylene, stirring for 20-25 minutes, adding polyethylene glycol monoallyl ether, stirring for 10-15 minutes, adding polyethylene glycol monoallyl ether again to obtain a polypropylene mixture, putting the polypropylene mixture into a twin-screw extruder, carrying out melt extrusion, and carrying out extrusion molding to obtain the polypropylene material. Hydrophilic polypropylene is obtained; the non-woven fabric is high in water absorption rate, short in liquid penetration time and excellent in strength and chemical stability resistance.
Owner:SHANDONG DAWN SWT TECH CO LTD

Acrylic acid silane ester self-updating antifouling resin based on cation-pi interaction as well as preparation method and application of acrylic acid silane ester self-updating antifouling resin

The invention discloses an acrylic acid silane ester self-renewal antifouling resin based on cation-pi interaction as well as a preparation method and application of the acrylic acid silane ester self-renewal antifouling resin. Methyl methacrylate, ethyl acrylate, triisopropylsilyl methacrylate, acrylic acid-2-methyl ethyl ester, paeonol methacrylate and acryloyloxyethyl trimethyl ammonium chloride are synthesized through a random free radical polymerization reaction with azodiisobutyronitrile and benzoyl peroxide as initiators. Wherein the methacrylic acid paeonol ester monomer is prepared by carrying out substitution reaction on paeonol and methacryloyl chloride. The anti-fouling agent is anchored on the surface of the coating again through cation-pi interaction, so that the anti-fouling effect is enhanced, and the coating still has good anti-fouling capacity even in a static environment.
Owner:HARBIN ENG UNIV

A polyurethane synthetic machine silicon material for wind turbine tower outer wall protection and a preparation method thereof

PendingCN122278206AMeth-Silicon oxide
This invention relates to a polyurethane-modified silicone protective material for the outer wall of wind turbine towers, and discloses a method for preparing the same material. The material is prepared by mixing acrylate-hedged phenol-modified trimethyl silicone oil, isocyanate-modified polyether polyol polyurethane, ultrafine silica, nano-alumina, short-fiber glass, triethylamine, benzoyl peroxide, dioctyl phthalate (DOP), phthalocyanine UV absorbers, dibutyltin diethylene (DDBT), and imidazole antifungal agents in a specific weight ratio. This material exhibits excellent weather resistance, mechanical strength, heat resistance, UV resistance, and antifungal properties, making it particularly suitable for the protection of wind turbine towers. The preparation method ensures the stability and consistency of the material's performance by precisely controlling the proportions of each component and the curing conditions. This material effectively improves the UV resistance, corrosion resistance, weather resistance, and overall durability of wind turbine towers, extending their service life and reducing maintenance costs. This invention provides a high-performance protective material for the outer wall of wind turbine towers, which has significant engineering application value. Especially in environments with long-term high humidity, low temperature, and strong ultraviolet radiation, it can significantly improve the stability and service life of the tower. This polyurethane-modified silicone protective material exhibits excellent protective performance in demanding application environments such as wind turbine towers, and has broad market application prospects.
Owner:BEIJING LEOFLY TECHNOLOGY CO LTD

High-temperature-resistant creep-resistant high-molecular polyethylene

PendingCN121517802AEpoxyFiber
The invention belongs to the field of polyethylene, and particularly relates to high-temperature-resistant creep-resistant macromolecular polyethylene, which is prepared from the following raw materials in parts by weight: 100 parts of ultra-high molecular weight polyethylene, 2 to 8 parts of modified graphene and 4 to 10 parts of epoxy resin. The preparation process of the modified graphene comprises the following steps: dropwise adding vinyltrimethoxysilane hydrolysate into graphene oxide dispersion liquid to obtain vinyltrimethoxysilane grafted graphene; the preparation method comprises the following steps: ultrasonically dispersing vinyl trimethoxy silane grafted graphene into degassed toluene, and then adding benzoyl peroxide; under the protection of nitrogen, stirring and reacting, continuously introducing ethylene gas into the system, and continuously reacting for 4-12 hours; after the reaction is finished, cooling the system to room temperature, releasing pressure, and stopping introducing ethylene; carrying out post-treatment to obtain modified graphene; the high-molecular polyethylene fiber prepared by the preparation method disclosed by the invention is good in high-temperature resistance, creep resistance and processing flowability.
Owner:ZHONG HUA XUE XI BU XIN CAI LIAO YOU XIAN GONG SI

Plasticizer corrosion resistant yellow glue and preparation method thereof

The invention provides yellow glue resistant to corrosion of a plasticizer and a preparation method of the yellow glue. The yellow glue is prepared from a polyurethane prepolymer, a chloroprene rubber sheet, methyl methacrylate, benzoyl peroxide, an anti-aging agent, butanone, cyclohexane, dimethyl carbonate and tackifying resin. The polyurethane prepolymer is prepared from the following components in parts by weight: 10 to 14 parts of 1, 4-butanediol adipic acid polyester polyol, 4 to 8 parts of polycaprolactone polyol, 1 to 3 parts of diphenylmethane diisocyanate, 0.05 to 0.15 part of 1, 6-hexanediol, 1 to 2 parts of hydroxyethyl methacrylate, 0.01 to 0.03 part of organic bismuth catalyst and 75 to 80 parts of butanone. The polyurethane prepolymer with specific crystallization performance is synthesized through cooperation of polycaprolactone polyol and polyester polyol, and the yellow glue is endowed with excellent plasticizer corrosion resistance and low-temperature activation capacity. Active groups in the polyurethane prepolymer are subjected to graft copolymerization with the chloroprene rubber adhesive and MMA, and a plasticizer-resistant polyurethane chain segment is introduced into a molecular chain of the chloroprene rubber adhesive, so that a hard segment-soft segment alternating block structure is formed, and corrosion resistance and viscoelasticity are both considered.
Owner:GUANGDONG GOOD RESIN TECH CO LTD

Method for preparing benzoyl peroxide gel and application

The invention discloses a method for preparing benzoyl peroxide gel and application, and belongs to the technical field of medicine preparation. The preparation method comprises the following steps: preparing a ternary eutectic solvent by taking choline chloride, glycerol and benzoic acid as raw materials, mixing benzoyl peroxide with the ternary eutectic solvent to obtain a benzoyl peroxide system, and mixing the benzoyl peroxide system with a gel system on the basis to prepare the benzoyl peroxide gel with relatively high stability, storage stability and antibacterial activity.
Owner:JIANGSU SEMPOLL PHARMA

Marble glue for bearing and preparation method thereof

The invention belongs to the technical field of marble glue preparation, and particularly relates to marble glue for bearing and a preparation method thereof. The marble glue capable of being used for bearing is prepared by synthesizing modified resin containing a carboxyl-terminated nitrile rubber chain segment, preparing A glue containing the modified resin, ground calcium carbonate, nano silicon dioxide, polystyrene powder and a silane coupling agent and then preparing B glue taking benzoyl peroxide and dibutyl phthalate as base materials. According to the marble adhesive, a resin matrix is synergistically modified through a carboxyl-terminated nitrile rubber flexible chain segment and nano silicon dioxide, curing shrinkage and a specific curing system are regulated and controlled in combination with polystyrene powder, the comprehensive performance is remarkably improved, all indexes basically meet the requirements of dry hanging adhesive, impact toughness, bonding strength and the like are remarkably improved, and durability and environmental adaptability are high; good industrial application prospects are realized.
Owner:JIANGSU DALISHI INVESTMENT CO LTD

Impact-resistant composite ABS plate and preparation method thereof

This invention relates to the field of ABS material technology, and more particularly to an impact-resistant composite ABS sheet and its preparation method. The raw materials of the aforementioned impact-resistant composite ABS sheet, by weight, include: 100-200 parts of emulsion-processed ABS resin, 10-20 parts of butadiene monomer, 5-10 parts of methyl methacrylate, 1-5 parts of glycidyl acrylate, 1-5 parts of maleic anhydride, 5-15 parts of styrene, 1-5 parts of aminated silica, 0.1-0.5 parts of benzoyl peroxide, 0.1-0.3 parts of triethylamine, 0.1-1 parts of emulsifier, 0.01-0.1 parts of first initiator, 0.05-0.2 parts of second initiator, 1-3 parts of oxidized polyethylene wax, 1-2 parts of lubricant, and 1-3 parts of antioxidant. This invention solves the contradiction between the heat resistance and impact strength of ABS resin, and has significant advantages over traditional modified systems, fully meeting the application requirements of the sheet in high-temperature vibration environments.
Owner:CHANGZHOU SUNPLAS CO LTD

Rubber / EVA (ethylene-vinyl acetate) dual-purpose treating agent as well as preparation method and application thereof

The invention provides a rubber / EVA dual-purpose treating agent and a preparation method and application thereof.The rubber / EVA dual-purpose treating agent is prepared from an ethylene chloride-vinyl acetate copolymer, a styrene-butadiene-styrene block copolymer, methyl methacrylate, benzoyl peroxide, 2, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate, a styrene-butadiene-styrene block copolymer, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate and a styrene-butadiene-styrene block copolymer. The adhesive is prepared from 2, 6-di-tert-butyl-4-methylphenol, chloroprene rubber, butadiene styrene rubber, 2-hydroxyethyl methacrylate, an auxiliary agent, a diluent and a solvent. The rubber / EVA dual-purpose treating agent can be universally used for two materials, namely rubber and EVA, so that inferior-quality products and mixed use conditions in the production process are reduced, waste is not easily caused, and the rubber / EVA dual-purpose treating agent is convenient to use; components with strong pungent smell, such as trichloroisocyanuric acid, do not need to be added, so that the prepared treating agent is relatively small in smell and beneficial to environmental protection.
Owner:GUANGDONG OASIS CHEM CO LTD

High-stability composite phase change material and preparation method thereof

The invention belongs to the technical field of phase change material preparation, and particularly relates to a high-stability composite phase change material and a preparation method thereof. According to the method, an organic solid-liquid phase change material is taken as a solvent, a reaction monomer octadecyl acrylate and a cross-linking agent 1, 6-hexanediol diacrylate are subjected to a cross-linking reaction through a redox initiation system (benzoyl peroxide and N, N-dimethyl-p-toluidine), and the solid-liquid phase change material is prepared. A phase-change high-molecular polymer with a phase-change function is constructed, a coating structure is formed on the organic solid-liquid phase-change material, and finally the composite phase-change material with excellent thermal stability and high latent heat characteristics is prepared. The preparation process disclosed by the invention can be carried out under a low-temperature condition, energy consumption and production cost can be effectively reduced, the process is simple, and batch production is easy; the prepared composite phase change material has wide application prospects in the fields of energy storage, temperature control and the like.
Owner:GUANGDONG UNIV OF TECH

Production process of high-wear-resistance asphalt concrete

PendingCN120647219AEpoxyFiber
The invention discloses a production process of high-wear-resistance asphalt concrete, and the asphalt concrete comprises the following raw materials: 70-90 parts of matrix asphalt, 5-8 parts of modified SBS resin, 5-8 parts of organosilicon epoxy resin, 2-3 parts of functional filler, 0.1-0.5 part of benzoyl peroxide, 0.5-1 part of m-phenylenediamine, 1000-1200 parts of sandstone aggregate and 80-120 parts of mineral powder. Materimide on the functional filler can be grafted with a modified SBS resin molecular chain, meanwhile, an epoxy group on the modified SBS resin molecule can be cross-linked with organic silicon epoxy resin, an organic silicon molecular chain segment has very high flexibility, and the flexibility is beneficial to dispersing stress, reducing stress concentration and forming a plurality of cross-linking sites, so that the cross-linking effect is improved, and the service life of the organic silicon epoxy resin is prolonged. The composite structure of the bamboo fibers and the polyhedral oligomeric silsesquioxane can protect the asphalt concrete from cracking, so that the service life of the asphalt concrete is greatly prolonged.
Owner:NINGBO DONGXING ASPHALT PROD CO LTD