139 results about "Dicumyl peroxide" patented technology

The invention relates to the technical field of crosslinked polyethylene insulated power cables, in particular to a flame-retardant and insulated low-voltage power cable and a preparation method and application thereof. The flame-retardant and insulating low-voltage power cable comprises the inner core layer, the filler layer, the belting layer, the lining layer, the metal armor layer and the outer sheath layer from inside to outside, and the multiple layers can effectively protect the inner core and endow the cable with better performance; in addition, low-density polyethylene, a furan modified polyethylene compatilizer, a reactive flame retardant, bismaleimide, dicumyl peroxide and an auxiliary are adopted to obtain the cross-linked polyethylene material for the cable outer sheath, and the cross-linked polyethylene material has excellent insulation, flame retardance, strength, toughness and repairing performance.

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 relates to the technical field of tread rubber, and discloses high-performance tire tread rubber based on a synergistic system and a preparation method thereof.The method comprises the following steps of first-stage mixing, second-stage mixing, third-stage mixing, final mixing and vulcanization molding. By adopting a composite vulcanization system composed of dicumyl peroxide and sulfur and cooperating with zinc methacrylate as a functional auxiliary agent, a dual synergistic cross-linked structure composed of a free radical cross-linked network and an ionic cross-linked network is formed in the vulcanization process, so that the uniformity and stability of the cross-linked network structure of the tread rubber can be effectively improved, and the service life of the tread rubber is prolonged. The reasonable regulation and control of the crosslinking density of the tread rubber in the vulcanization process are ensured, the problem that a traditional single vulcanization system cannot give consideration to the wear resistance and the dynamic heat generation performance is solved, the comprehensive mechanical property and the dynamic use performance of the tread rubber are further improved, and firm chemical combination between the reinforcing filler and rubber molecules is ensured.

The invention relates to the technical field of cable accessories, in particular to a high-strength cable accessory and a preparation method thereof. The high-strength cable accessory comprises a semiconductor layer and an insulating layer, and the semiconductor layer is prepared from, by weight, 10-15 parts of low-density polyethylene, 75-85 parts of polyolefin thermoplastic elastomer, 8-12 parts of ethylene propylene diene monomer, 25-40 parts of silane coupling agent grafted graphene nanosheets and 4-6 parts of maleic anhydride grafted modified ethylene-octylene copolymer. The composition comprises the following components in parts by weight: 1.0-2.0 parts of zinc stearate, 1.0-2.0 parts of an antioxidant, 2.0-3.5 parts of trimethylolpropane trimethacrylate and 1.5-2.2 parts of dicumyl peroxide. According to the high-strength cable accessory provided by the invention, the overall mechanical property, thermal stability and conductivity of the composite material and the mechanical strength, breakdown field strength and insulating property of the insulating layer are improved.

The invention relates to the technical field of polymer foam materials, and discloses a light EVA foam material based on intermittent foaming heating and a preparation method thereof. The ethylene-vinyl acetate copolymer adhesive is prepared from the following raw materials: an ethylene-vinyl acetate copolymer, a maleic anhydride grafted ethylene-vinyl acetate copolymer, azodicarbonamide, basic zinc carbonate, triallyl isocyanurate, stearic acid and dicumyl peroxide. During preparation, a double-machine-position stepped heating and mechanical mode locking transfer process is adopted. The first-stage heating is initiated by dicumyl peroxide to construct a covalent cross-linked skeleton; in the second-stage foaming heating process, basic zinc carbonate is heated and decomposed, and anhydride groups are promoted to be hydrolyzed and combined with released zinc oxide in situ to form ionic crosslinking. A double-order cross-linked network formed by covalent bonds and ionic bonds can absorb bubble expansion stress and stabilize an internal microstructure. According to the invention, the occurrence rate of cell merging and cracking under the condition of low density is reduced, and the foaming material with low apparent density and small compression set rate is obtained.

Provided are a constrained-type vibration-damping metal sheet having foam pores and a method for manufacturing same. The constrained-type vibration-damping metal sheet of the present invention comprises: a lower metal sheet; a foam resin film bonded to the lower metal sheet; and an upper metal sheet bonded to the foam resin film, wherein the foam resin film has foam pores comprising, by wt % of itself, 85-95% of a thermoplastic polyethylene resin having a number average molecular weight of 8000-12000, 0.1-1% of stearic acid, 1-5% of a styrene-ethylene-butadiene-styrene (SEBS) resin, 0.5-5% of a foaming agent, 1-4% of a dicumyl peroxide crosslinking agent, and 0.5-2% of ZnO foaming aid.

The invention relates to the field of auxiliary frame connecting bushings, in particular to a high-wear-resistance anti-aging new energy auxiliary frame connecting bush and a preparation method thereof, and aims at solving the problems that an auxiliary frame connecting bush is insufficient in wear resistance, poor in anti-aging performance and the like. The preparation method comprises the following steps: by taking a modified polyurethane solution as a matrix, sequentially adding modified nano silicon dioxide, modified multi-walled carbon nanotubes and polytetrafluoroethylene micro powder, uniformly mixing through ultrasonic dispersion and mechanical stirring, adding an anti-aging agent and polypropylene glycol dicyclohexyl acetate step by step, and sequentially stirring and uniformly mixing, so as to obtain a finished product. And adding dicumyl peroxide as a cross-linking agent, stirring until the system is uniform, injecting into a mold, carrying out thermal insulation cross-linking and vacuum drying, and demolding to obtain the high-wear-resistance anti-aging new energy auxiliary frame connecting bushing. The high-wear-resistance anti-aging new energy auxiliary frame connecting bush has the characteristics of high wear resistance and aging resistance and excellent mechanical strength and use stability.

The present application relates to a kind of high adhesive composite material for rubber dam and its preparation method, it is related to rubber dam technical field, wherein the high adhesive composite material for rubber dam includes the weatherproof layer of outer layer, the reinforcing layer of middle, inner layer self-repairing layer, by mass fraction, the weatherproof layer includes 90-110 parts high saturated nitrile rubber, 23-28 parts carbon black N550, 3-8 parts nano TiO2, 1-3 parts antioxidant 1010, 2-3 parts of dicumyl peroxide, the reinforcing layer includes 60-80 parts of ethylene-propylene-diene rubber, 25-35 parts of butadiene-styrene rubber, 13-15 parts, nylon fiber, 10-12 parts aramid fiber, 12-15 parts carbon black, 0.5-1.5 parts graphene, 1-2 parts of sulfur, 0.5-1.5 parts of accelerator CZ, the self-repairing layer includes 90-100 parts of silicone rubber, 5-10 parts nano SiO2, 5-8 parts self-repairing agent, 0.1-0.3 parts dispersant.The high adhesive composite material for rubber dam of the present application has good adhesion, can repair small crack in time, prevent the further expansion of crack.

The invention discloses a maleic anhydride functional modified polyolefin resin composition as well as a preparation method and application thereof, and relates to the technical field of high polymer materials. Comprising the following steps: mixing maleic anhydride modified polypropylene, polylactic acid and dicumyl peroxide, banburying, adding modified silicon dioxide, a synergist, epoxidized soybean oil and hydroxyl-terminated hyperbranched polyester, carrying out melt blending, and carrying out water-cooling tabletting and crushing treatment to obtain the maleic anhydride functionalized modified polyolefin resin composition. By introducing maleic anhydride modified polypropylene prepared from polypropylene, maleic anhydride and other components, the adhesive force, impact resistance and flame retardance of the polyolefin resin composition can be effectively improved; and the flame retardance, the corrosion resistance, the impact resistance and the heat resistance of the polyolefin resin composition are further improved due to the introduction of the synergist, the modified silicon dioxide and other components. Therefore, the method has a wider application prospect.

The present application relates to the technical field of new energy power battery thermal management materials, in particular to a co-extrusion film material for aerogel thermal insulation pad packaging, and discloses a co-extrusion film, a preparation process and application in new energy batteries, wherein the co-extrusion film is prepared from high-performance master batches through a co-extrusion blow molding process, the high-performance master batches are composed of seven-vinyl POSS single-grafted nylon 6 resin, modified expanded vermiculite with octadecenyl and DOPO groups on the surface, and dicumyl peroxide initiator, under the action of the dicumyl peroxide initiator, the vinyl on the POSS cage structure of the seven-vinyl POSS single-grafted nylon 6 resin and the octadecenyl on the surface of the modified expanded vermiculite occur free radical reaction to obtain the high-performance master batches. Through the synergistic modification strategy of double grafting and crosslinking, the present application realizes the synergistic improvement of flame retardation, heat resistance, barrier property and mechanical property, and solves the technical bottlenecks of aerogel packaging materials in high-temperature failure, weak interface bonding and processing performance deterioration.

The invention belongs to the technical field of asphalt pavement materials, and relates to dynamic crosslinking waste polyolefin plastic modified asphalt which comprises the following components in parts by weight: 100 parts of matrix asphalt and 5-30 parts of dynamic crosslinking waste polyolefin plastic, the dynamic crosslinking waste polyolefin plastic is prepared from the following components in parts by weight: 100 parts of waste polyolefin plastic, 2 to 6 parts of maleic anhydride, 2 to 6 parts of bisphenol A and 0.2 to 0.6 part of dicumyl peroxide. The problems that in the prior art, waste utilization is insufficient, and asphalt performance improvement is not remarkable are solved, dynamic covalent bonds are introduced into asphalt modification through formation of the dynamic covalent bonds in the dynamic crosslinking waste polyolefin plastic, good pavement performance is achieved, and meanwhile, based on reversibility of the dynamic covalent crosslinking structure, the asphalt performance is improved. And the modified asphalt is endowed with good reprocessability.

The application relates to the technical field of high polymer materials, and discloses an antistatic shoe sole material and a preparation method thereof, which is made of ethylene-vinyl acetate copolymer, ethylene-propylene rubber, cationic POE-carbon nanotube hybrid master batch, dicumyl peroxide, azodicarbonamide and zinc oxide. The cationic POE-carbon nanotube hybrid master batch is prepared by the following steps: pre-compounding alkenyl epoxy functionalized imidazole didodecyl double cationic connecting agent with acidized carbon nanotubes, and then melt grafting the ethylene-octene copolymer thermoplastic elastomer by one-step method; and the epoxy group further reacts with the carboxyl group on the surface of the carbon nanotubes. The application can construct an electronic-ion synergistic conductive network, has low addition amount, long-term antistatic property and high resilience.

The invention discloses a high-elasticity silica gel precise sealing element and a production process thereof, and relates to the field of sealing elements. A high-elasticity silica gel precise sealing element comprises a sealing rubber strip which is integrally formed in an injection molding mode through an injection molding machine. The silicone rubber mainly comprises the following components in parts by weight: 95-105 parts of methyl vinyl silicone rubber, 1.2 parts of dicumyl peroxide, 14-16 parts of nano calcium carbonate, 8 parts of polyether polyol, 3 parts of hydroxyl silicone oil and 0.5 part of an anti-aging agent RD. Through three-section temperature control, vacuum auxiliary forming and graded pressure maintaining parameters of the material barrel of the injection molding machine and precise matching of constant-temperature control and pressure maintaining of the mold temperature controller, the problems that the density of injection molding rubber strips is not uniform and hidden holes exist in the connecting position of reinforcing ribs and a main body are effectively solved, the integrity of an integrally-formed structure is ensured, and the sealing basic performance is improved from the source.

The application relates to the technical field of cables, and discloses an insulated high-voltage power cable and a preparation method thereof. The insulated high-voltage power cable comprises a conductor, a crosslinked polyethylene insulation layer, a shielding layer, a semi-conductive water-blocking tape, an anticorrosion layer, a sheath layer and the like. Polyethylene, modified boron nitride, dicumyl peroxide and an antioxidant are mixed, extruded through a screw extruder, granulated, and the crosslinked polyethylene insulation layer is obtained. The compatibility of the modified boron nitride with the polyethylene is improved, the bonding force is improved, the modified boron nitride can be more uniformly dispersed in the polyethylene matrix, the mechanical properties and the thermal conductivity of the polyethylene insulation layer are improved, the breakdown field strength of the polyethylene insulation layer is increased, the high-voltage resistance of the polyethylene insulation layer is improved, and the polyethylene insulation layer can be better applied to high-insulation high-voltage power cable materials.

The invention provides a preparation method of a PLA / TPU based 4D printing composite material. The method comprises the following steps: weighing PLA, TPU, dicumyl peroxide (DCP) and maleic anhydride grafted polyethylene (MAH-g-PE) according to a specific ratio; drying the raw materials; carrying out melt blending and granulation in a specific temperature interval through a double-screw extruder; and finally, extruding the composite granules to prepare the printing wire material with the standard diameter. According to the method, through optimized process steps and parameters, the synergistic effect of the DCP cross-linking agent and the MAH-g-PE compatibilizer in the processing process is effectively promoted, and cross-linked network construction and interface compatibility are synchronously completed through a one-step method. The prepared composite wire is stable in specification and good in printing adaptability, the finally obtained 4D printing product has the advantages of being compact in interface bonding, excellent in shape memory performance and balanced in mechanical property, and the method is good in repeatability and suitable for industrial application.

The invention discloses a high-flame-retardant EVA (Ethylene Vinyl Acetate) foaming material and a preparation method thereof, and relates to the technical field of high polymer materials. The high-flame-retardant EVA foaming material is prepared from a coated functional filler, a nitrogen-doped graphene-like carbon / cobalt nano composite material, EVA, stearic acid, zinc stearate, zinc oxide, a foaming agent AC and dicumyl peroxide, a core-shell combined filler composed of a coated functional filler and a nitrogen-doped graphene-like carbon / cobalt nano composite material is uniformly distributed in an EVA three-dimensional network cross-linked matrix to form a porous material with a uniform closed cell structure, so that the flame retardant property is improved by virtue of a physical barrier effect and a catalytic carbon formation mechanism, and an efficient and stable conductive network is also constructed; the antistatic performance is optimized, and the application range of the EVA foaming material is widened.

The invention relates to the technical field of cable insulation materials, in particular to an anti-aging chemical crosslinked polyethylene cable insulation material and a preparation process thereof. The insulating material is prepared from the following components in parts by mass: 50 to 60 parts of low-density polyethylene, 20 to 25 parts of polyolefin elastomer, 10 to 15 parts of maleic anhydride grafted SEBS (Styrene-Ethylene-Butylene-Styrene), 1.5 to 2.5 parts of dicumyl peroxide, 15 to 20 parts of composite flame-retardant filler and 3 to 5 parts of anti-aging composition, the preparation process comprises the following three steps: firstly, preparing the core-shell structure flame-retardant master batch of zinc borate coated talcum powder through ball milling and melt blending; secondly, mixing the anti-aging component with a polyolefin elastomer to prepare an anti-aging master batch; and finally, mixing the matrix resin with the two master batches and the cross-linking agent, carrying out reactive extrusion in a four-section temperature zone (150-195 DEG C), and carrying out water-cooling cutting and drying to obtain a finished product. The insulating material has the characteristics of no toxicity, long-term high temperature resistance, aging resistance and excellent flame retardance, and is suitable for low-voltage to medium-voltage power cables.

The invention relates to the field of high polymer materials, and discloses a high-temperature-steaming-resistant PE (polyethylene) film and a preparation method of the high-temperature-steaming-resistant PE film. Comprising the following raw materials in parts by weight: 50-60 parts of metallocene polyethylene, 15-20 parts of bio-based polyethylene, 0.8-1.2 parts of dicumyl peroxide, 0.3-0.5 part of a cross-linking agent, 3-4 parts of nano silicon dioxide, 2-3 parts of layered double hydroxides, 0.5-1 part of graphene nanosheets, 8-12 parts of fluorine-containing polymer modified PE resin and 0.8-1 part of an organic tin-rare earth composite heat stabilizer. The shape and strength at high temperature are guaranteed through metallocene polyethylene and bio-based polyethylene, dicumyl peroxide is combined with a cross-linking agent to reinforce heat resistance and size stability, fluorine-containing polymer modified PE resin forms a fluorine-containing protective layer, an organic tin-rare earth composite heat stabilizer inhibits thermal degradation, a composite antioxidant captures free radicals, and the film is prevented from yellowing and embrittling.

This invention discloses a high-temperature resistant flat cable and its manufacturing process, comprising: a flat aluminum alloy busbar, an insulation layer covering the outer surface of the flat aluminum alloy busbar, and a flat aluminum alloy tube covering the outer surface of the insulation layer; the insulation layer is formed by extruding cable material, and the cable material is composed of the following components in parts by weight: 100 parts of polyethylene resin, 1-3 parts of silane crosslinking agent, 0.5-1 parts of glycidyl methacrylate, 0.1-1.5 parts of antioxidant, 0.05-0.2 parts of initiator, 0.2-0.5 parts of tetrabutyl zirconate, and 0.1-0.3 parts of triallyl isocyanurate; the silane crosslinking agent is vinyltrimethoxysilane or vinyltriethoxysilane, and the initiator is at least one of dicumyl peroxide, methyl ethyl ketone peroxide, or benzoyl peroxide. The insulation layer of the high-temperature resistant flat cable of this invention has a breakage elongation change rate of 10~20% after aging at 125℃, and an elongation rate of 30~55% under thermal extension load, thereby improving the high-temperature resistance and service life of the flat cable.

The preparation method of the yellowing-resistant nylon particle composite material comprises the following steps: S1, weighing 100 parts by weight of nylon, and adding the nylon into a reaction kettle; s2, adding 2, 2, 2-trifluoroethanol as a solvent into the reaction kettle, and stirring to form a uniform nylon dissolving solution; s3, conveying the nylon dissolving solution into a spray dryer through a peristaltic pump, and performing atomization, drying and powder collection under the protection of nitrogen; s4, placing the powder in a vacuum drying oven, and drying at 25 DEG C for 3 hours to obtain nylon powder; s5, mixing the nylon powder with the following raw materials in parts by weight: 1-2 parts of an ultraviolet light absorber, 1-2 parts of a hindered phenol antioxidant, 2-4 parts of adipic acid, 0.5-1.5 parts of sebacic acid, 0.1-0.5 part of dicumyl peroxide and 8-10 parts of silane coupling agent modified mica powder; and S6, carrying out melt blending on the mixture obtained in the step S5 in a twin-screw extruder to obtain the yellowing-resistant nylon particle composite material.

The present application relates to a kind of medicine sealing plug and its preparation method, its sealing plug includes core body, self-sealing body and sealing body, the lower end of core body forms the plug neck of big cone shape from top to bottom, the center of plug neck forms the cone hole of big cone shape from top to bottom;The components of core body include brominated butyl rubber, white carbon black, dicumyl peroxide, zinc oxide, stearic acid, amino silane coupling agent;Self-sealing body is conical to be embedded in cone hole, the components of self-sealing body include brominated butyl rubber, white carbon black, polyisobutylene, sulfur, TBBS, zinc oxide, stearic acid;Sealing body is conical sleeve to be set on plug neck, the components of sealing body include fluorine rubber, white carbon black, perfluoropolyether plasticizer, bisphenol AF, BPP, heat stabilizer;Core body, self-sealing body and sealing body are formed by moulding vulcanization.

The invention belongs to the field of superhigh-temperature ceramic materials, and particularly relates to a hafnium carbide precursor and a preparation method thereof.The preparation method comprises the steps that n-propyl alcohol hafnium and two special modified compounds are mixed in an inert atmosphere, dicumyl peroxide, benzophenone, triethanolamine and divinyl benzene are added for stirring, and the hafnium carbide precursor is obtained; adding tetrahydrofuran, stirring at a constant temperature to form a homogeneous solution, and finally filtering to obtain a precursor; the two modified compounds are vinyl tris (diethylamino) hafnium and acryloyloxy dibenzoyl hafnium complexes respectively, and the preparation method is realized through substitution reaction of hafnium tetrachloride and amine compounds and coordination reaction of n-propanol hafnium, dibenzoylmethane and acryloyl chloride respectively. The obtained hafnium carbide precursor contains a hafnium source, a modified compound, a cross-linking agent and a solvent, through molecular design, the ceramic yield is remarkably increased, the cracking temperature is reduced, the oxidation resistance and sintering density of final ceramic are improved, and the preparation method is suitable for preparing an ultra-high-temperature ceramic material.

The invention discloses an anti-aging polyethylene rotational molding modified material and a preparation method thereof, and the modified material comprises the following raw materials: linear low density polyethylene, metallocene polyethylene rotational molding material, a modified additive, dicumyl peroxide, a modified filler and a Karst catalyst, in the melt extrusion process of the raw materials, part of double bonds on the modified additive can be grafted with polyethylene molecular chains, and the remaining double bonds are grafted with Si-H on the modified filler under the action of a Karst catalyst, so that the modified filler is uniformly dispersed in the material to form a protective layer; the surface of the modified filler contains a hydroxyl benzophenone structure, so that ultraviolet rays can be converted into harmless heat energy to be released, and an internal zirconium organic framework can absorb and scatter high-energy ultraviolet rays; the opportunity that ultraviolet rays directly act on polyethylene molecular chains is reduced, and the anti-aging effect of the material is further improved.

The invention relates to the technical field of power cables, and provides a corrosion-resistant cross-linked polyethylene insulated power cable which comprises a conductor, a cross-linked polyethylene insulating layer, a metal shielding layer, an armor layer and an outer sheath layer from inside to outside. The outer sheath layer comprises the following components in parts by weight: 55-65 parts of polyethylene, 12-18 parts of polyvinyl chloride, 2-4 parts of ethylene-vinyl acetate, 20-24 parts of carbon black, 15-20 parts of a filler, 10-12 parts of a plasticizer, 2-4 parts of a corrosion inhibitor, 2-4 parts of an anti-aging agent, 12-15 parts of magnesium hydroxide, 24-30 parts of aluminum hydroxide and 1-2 parts of dicumyl peroxide; the filler comprises talcum powder, barium carbonate and pretreated magnesium oxide in a mass ratio of 2: 1: (0.6-1.3); the pretreated magnesium oxide is lithium fluoride coated magnesium oxide. Through the technical scheme, the problem of insufficient corrosion resistance of the crosslinked polyethylene insulated power cable in the prior art is solved.

This invention belongs to the field of rubber, specifically relating to a rubber, its preparation method, and its application. The invention discloses a rubber comprising, by weight, the following raw material components: 100 parts EPDM; 5-10 parts zinc oxide; 0.5-1.5 parts stearic acid; 7-8 parts 40% dicumyl peroxide; 0.2-0.4 parts tetramethylthiuram disulfide; 0.5-0.8 parts 80% sulfur; 35-40 parts carbon black; 25-27 parts silica; 0.4-0.6 parts silane coupling agent; 14-20 parts naphthenic oil; 0.6-1 part paraffin wax; and 1-3 parts single-walled carbon nanotubes; wherein the weight of EPDM is not less than 50% of the total weight of the rubber. The beneficial effect of this invention is that it provides a rubber whose volume resistivity and other properties simultaneously meet the requirements of the T / CEC China Electricity Council standard "Technical Conditions and Test Methods for Electric Power Fittings Rubber and Rubber Products".

The invention relates to the technical field of power cable insulating materials, and discloses a compression-resistant insulating power cable material, a preparation method and a power cable, the insulating material comprises the following raw materials: low density polyethylene, ethylene propylene diene monomer, N, N '-m-phenylenedimaleimide, 2-mercaptobenzimidazole, zinc stearate, zinc methacrylate and dicumyl peroxide. In the preparation process, N, N '-m-phenylenedimaleimide and 2-sulfydryl benzimidazole are subjected to an in-situ addition reaction to generate a macromolecular crosslinking precursor, and free sulfydryl masking is realized. The precursor and zinc methacrylate are subjected to coordination to form polar nodes, and a homogeneous cross-linked network containing electron deep traps and dynamic sacrificial bonds is constructed after cross-linking and curing. Under the condition that no inorganic filler is added, irreversible slippage and space charge accumulation of macromolecular chain segments in an insulator are effectively inhibited, so that the cable material has high compression resistance, low creep deformation, high electrical strength and long-acting thermo-oxidative aging resistance.

This invention provides an anti-slip and stain-resistant flooring and its preparation method, comprising the following raw materials in parts by weight: 60-80 parts polyvinyl chloride resin, 3-8 parts flame retardant, 10-15 parts plasticizer, 1-3 parts stabilizer, 7-10 parts polydimethylsiloxane-modified silica, 1-3 parts silane coupling agent, 0.5-1.5 parts dicumyl peroxide, and 2-4 parts triallyl isocyanurate. This invention uses polydimethylsiloxane-modified silica as the core functional component, organically combining the low surface energy characteristics of polydimethylsiloxane with the microscopic rough structure of silica, enabling the flooring to possess both excellent anti-slip and stain-resistant properties. The polydimethylsiloxane-modified silica forms a hydrophobic and oleophobic layer on the material surface, making it difficult for oil and water stains to adhere; simultaneously, the silica particles form a microscopic rough structure on the surface, increasing the coefficient of friction and achieving the anti-slip effect.

The invention belongs to the technical field of high polymer materials, and particularly relates to a reactive compatilizer and application of the reactive compatilizer in TPU / POM blending modification, and the reactive compatilizer comprises the following components in parts by weight: a polyformaldehyde-b-polyoxazoline block copolymer; maleic anhydride; and dicumyl peroxide; an antioxidant 1010; the polyoxazoline block accounts for 28 to 32 weight percent, and the number-average molecular weight of the polyoxazoline block is 3000 to 5000 g / mol. A main chain is of a block structure or a grafted structure, strong physical adsorption is formed by the block structure or the grafted structure and POM, and part of chain segments can be embedded into the edge of a crystalline region of POM due to the similar structure; chemical / physical double bonding is formed with TPU, the thickness of an interface layer is increased, the bonding strength is high, and stress can be efficiently transmitted. According to the invention, the size of the TPU dispersed phase is reduced from the micron level to the nano level, and the loss of tensile strength and rigidity is reduced while the toughness is improved. The early fracture caused by stress concentration is avoided, and meanwhile, the interference on the crystal structure of the POM matrix is small.

The invention discloses a preparation method of interior plastic particles. The method comprises the following steps: preparing a modified ethylene-octylene copolymer; the preparation method comprises the following steps: performing main material premixing on a modified ethylene-octylene copolymer, bisphenol A polycarbonate resin, polypropylene random copolymer, polyamide wax micro powder, a composite synergistic stabilizer, maleated rosin, itaconic acid, modified nano titanium dioxide and a compatilizer; adding an anti-aging agent, a bio-based plasticizer, a dispersing agent and dicumyl peroxide for pretreatment; and carrying out melt blending extrusion on the pretreated mixture, injecting sulfur into a dynamic vulcanization reaction zone, and carrying out underwater pelletizing and stepped cooling drying. Through the synergistic effect of the composite synergistic stabilizer and the modified nano titanium dioxide and the combination of the in-situ polymerization pretreatment and the dynamic vulcanization process, the obtained plastic particles have excellent ultraviolet aging resistance, high and low temperature toughness, mechanical strength and low VOC release, and are especially suitable for interior parts such as automobile dashboards, door plates and stand column protection plates.

The application discloses a mildew-proof wood-plastic board and a preparation method thereof, and relates to the technical field of wood-plastic boards.The mildew-proof wood-plastic board is prepared from the following raw material components in parts by weight: 50-60 parts of mildew-proof modified wood powder, 35-50 parts of ultraviolet-resistant modified polypropylene, 2-5 parts of maleic anhydride grafted polypropylene, 5-8 parts of a toughening agent, 8-16 parts of modified filler, 1-2 parts of zinc stearate, 0.5-1 part of an antioxidant, 0.2-0.3 part of a hindered amine light stabilizer and 0.05-0.1 part of dicumyl peroxide; wherein the mildew-proof modified wood powder is obtained by modifying wood powder with a mildew-proof modifier; and the ultraviolet-resistant modified polypropylene is obtained by modifying polypropylene with 2-hydroxy-4-propenyloxybenzophenone.The mildew-proof wood-plastic board prepared by the application has long-term stable mildew-proof performance, and also has excellent mechanical properties.