1078 results about "Powder talc" patented technology

The invention discloses a high-temperature-resistant, high-voltage-resistant and anti-breakdown capacitor base film and a preparation method thereof. The high-temperature-resistant, high-voltage-resistant and anti-breakdown capacitor base film is prepared from the following raw materials in parts by weight: 100 parts of polypropylene; 17 to 36 parts of polyvinylidene fluoride; 3-12 parts of enhanced and improved talcum powder; 1-6.5 parts of modified barium titanate; 1-6 parts of a cross-linking agent; 2-10 parts of a compatilizer; and 0.05-2 parts of an initiator. The capacitor base film is high in mechanical strength, and has excellent high temperature resistance, thermo-oxidative aging resistance, high voltage resistance and anti-breakdown performance; the enhanced and improved talcum powder is constructed by taking expanded layer modified talc as a carrier and titanium dioxide-carbon dot composite particles as a loading component and grafting and coating the organic matter, so that the defects of the talcum powder can be overcome, and the improvement effect of the talcum powder on heat resistance, high-voltage resistance and breakdown resistance can be fully exerted; meanwhile, the system can be endowed with excellent thermo-oxidative aging resistance.

The invention relates to the technical field of waterproof coatings, in particular to a polyurethane waterproof coating and a preparation process thereof. The polyurethane waterproof coating is prepared from the following raw materials: toluene diisocynate, polyether polyol, chlorinated paraffin, talcum powder, a latent curing agent, self-repairing microcapsules and temperature-sensitive polymer nanoparticles. According to the self-repairing capsule, hexamethylene diisocyanate serves as a core material, the outer layer of the self-repairing capsule is wrapped with a polyurethane / nano-silicon dioxide hybrid wall material or a urea-formaldehyde resin wall material, and the temperature-sensitive polymer nanoparticles are poly N-isopropylacrylamide. The self-repairing microcapsules and the temperature-sensitive polymer nanoparticles are used, the self-repairing capacity and the capacity of adapting to different environmental conditions of a coating film are improved, when tiny cracks occur in the coating film, the microcapsules are broken to release a repairing agent, the cracks are automatically filled, the integrity of the coating is recovered, and the self-repairing performance of the coating film is improved. And the temperature-sensitive polymer nanoparticles can expand when the temperature rises to further promote the flowing and curing of the repairing agent, so that the service life of the coating film is prolonged, and the maintenance cost is reduced.

The invention relates to an antistatic MLCC release film base film and a preparation method thereof. The antistatic MLCC release film base film is prepared by melt blending and biaxial stretching of PET master batch, an antistatic composition and a nano filler, wherein the antistatic composition is prepared by compounding modified PET-PEG and thiophene modified aromatic polyamide; the nano filler is prepared by carrying out melt extrusion on KH550 modified talcum powder and MAH-g-PET (maleic anhydride-grafted polyethylene terephthalate). The antistatic composition disclosed by the invention has the beneficial effects that the antistatic composition is formed by interweaving two polymers, and a stable three-dimensional conductive network is constructed in the PET film, so that the antistatic performance is more efficient, lasting and stable. In addition, through chemically bonded modified talcum powder, the smoothness and low roughness are provided, and meanwhile reinforcing and toughening are achieved; and the single-layer extrusion process can realize ultrathin thin film, the production process is simplified, and the production cost is greatly reduced.

The invention relates to the technical field of polyurethane coatings, in particular to a hydrophobic flame-retardant polyurethane coating and a preparation method thereof. The preparation method comprises the following steps: firstly, taking 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide and methallyl alcohol as raw materials, and reacting to obtain hydroxyl grafted phosphaphenanthrene; taking 1, 1, 3, 3-tetramethyldisiloxane and methallyl alcohol as raw materials, and reacting according to a molar ratio of 1: 2 to obtain dihydroxy siloxane; then cyanuric chloride, hydroxyl grafted phosphaphenanthrene and dihydroxyl siloxane react according to the molar ratio of 1: 1: (1.5-1.8), and the dihydroxyl-terminated silicon-containing flame retardant is obtained. The preparation method comprises the following steps: mixing a dihydroxyl-terminated silicon-containing flame retardant with polytetrahydrofuran ether glycol to serve as a soft segment, and reacting with isocyanate to obtain a hydrophobic flame-retardant polyurethane emulsion; mixing the hydrophobic flame-retardant polyurethane emulsion, an anti-aging agent, an ultraviolet light absorber, a defoaming agent, kaolin, nano silicon dioxide and talcum powder to obtain the hydrophobic flame-retardant polyurethane coating.

The invention relates to a biodegradable composition as well as a preparation method and application thereof, and belongs to the technical field of compositions of high-molecular compounds. The biodegradable composition disclosed by the invention is prepared from the following components in parts by weight: 44 to 90 parts of PBAT resin, 5 to 15 parts of amorphous resin and 5 to 40 parts of inorganic filler, based on the total molar weight of a terephthalic acid monomer unit and an adipic acid monomer unit in the PBAT resin, the molar ratio of the terephthalic acid monomer unit is 47-49%; the amorphous resin is at least one of PPC-P, PMMA (Polymethyl Methacrylate), PETG (Polyethylene Terephthalate Glycol) and PCTG; the inorganic filler comprises at least one of calcium carbonate and talcum powder; the particle size D50 of the calcium carbonate is less than 5 [mu] m, and / or the particle size D50 of the talcum powder is less than 8 [mu] m. The biodegradable film produced by adopting the biodegradable composition under a low blow-up ratio process has excellent dart falling performance, and can meet the requirement of ultra-long shelf life.

The invention relates to the field of coatings, and discloses an outer wall light radiation heat preservation and heat insulation decorative sheet and a preparation method thereof.A radiation refrigeration layer on the surface of the outer wall light radiation heat preservation and heat insulation decorative sheet comprises modified acrylate resin, silicon dioxide, ground calcium carbonate, talcum powder, modified hollow glass beads and auxiliaries; the modified acrylate resin is prepared by copolymerizing perfluorooctyl ethyl acrylate, methyl methacrylate, modified isocyano ethyl methacrylate and vinyltriethoxysilane, and the modified isocyano ethyl methacrylate is prepared by using salicylaldehyde and benzothiazole-2-formaldehyde as well as 1, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate as an initiator and using 2, 3, 4-trimethyl-1, 3-pentanediol monoisobutyrate as an initiator. The preparation method comprises the following steps: reacting amino groups at two ends of 1, 5-naphthylenediamine with DOPO, carrying out nucleophilic addition reaction with DOPO, and grafting with isocyano ethyl methacrylate. The modified hollow glass beads are prepared by using tetrabutyl titanate as a titanium source through a sol-gel method, and the prepared radiation refrigeration layer has the super-amphiphobic self-cleaning effect, the radiation refrigeration effect is good, and meanwhile the flame retardant property and the antibacterial effect are excellent.

The invention discloses a polyethylene cable with flexibility and fire resistance and a preparation method of the polyethylene cable, and relates to the technical field of polyethylene cables, the polyethylene cable comprises a cable core and a polyethylene protective sleeve, the polyethylene protective sleeve comprises the following components, the plastic is prepared from the following components in parts by mass: 50 to 70 parts of low-density polyethylene, 20 to 30 parts of modified polyolefin elastomer, 10 to 25 parts of lignin modified copolymer, 0.5 to 1 part of antioxidant, 0.6 to 1.2 parts of zinc oxide and 1 to 2 parts of talcum powder. The modified polyolefin elastomer is prepared from POE-g-MAH (Polyolefin Elastomer-g-MAH) and a DOPO Schiff base derivative; the lignin modified copolymer is prepared from lauryl methacrylate, isobornyl methacrylate and a lignin macroinitiator.

The invention discloses a talcum powder filled regenerated polypropylene composite material and a preparation method thereof, and relates to the technical field of regenerated polypropylene. The talcum powder filled regenerated polypropylene composite material comprises the following raw materials in parts by mass: 100 parts of regenerated polypropylene, 15-18 parts of a nucleating agent, 8-10 parts of a cross-linking agent, 0.1-0.3 part of an initiator, 0.5-1 part of an antioxidant, 0.5-0.7 part of a light stabilizer and 1-2 parts of a lubricant. The regenerated polypropylene comprises a regenerated polypropylene master batch and a modified polypropylene master batch in a mass ratio of 1: (1-2); the nucleating agent comprises modified talcum powder and an organic carboxylate nucleating agent in a mass ratio of 50: (1-2). According to the regenerated polypropylene composite material provided by the invention, the mechanical property of regenerated polypropylene is remarkably improved, and the generation of volatile irritant gas after processing is reduced.

The invention discloses a high-strength cable protection tube and a preparation method thereof, and relates to the technical field of cable protection tubes, the high-strength cable protection tube sequentially comprises a protection layer and a deformation heat conduction layer from outside to inside, and the protection layer comprises, by weight, 60-80 parts of polypropylene, 5-8 parts of an anti-wear agent, 3-5 parts of an antioxidant, 5-8 parts of external oxide powder, 5-8 parts of a toughening agent and 3-5 parts of talcum powder. The deformation heat conduction layer comprises the following components in parts by weight: 30-40 parts of a supporting material, 5-8 parts of internal oxide powder, 20-30 parts of silicone oil, 20-30 parts of zirconium tungstate and 10-20 parts of a supporting material. The deformation heat conduction layer is arranged on the inner wall of the protection layer, and the deformation heat conduction layer is composed of silicone oil, a supporting material and the like and can deform to make large-area contact with the cable placed in the protection layer, so that heat of the cable can be transmitted to the protection layer more quickly, and the heat can be transmitted to the outside more quickly; and the heat transfer efficiency to the outside is higher.

The invention provides a preparation method of rare earth ion heavily-doped luminescent glass and application of a light source. The rare earth ion heavily-doped luminescent glass comprises the following components in percentage by mass: 50-68% of black talcum powder, 10-25% of LiF, 10-25% of NaF, 10-25% of CaF2, an externally-doped rare earth compound accounting for 15-25% of the total mass of other raw materials (black talcum powder + LiF + NaF + CaF2), and an externally-doped clarifying agent accounting for 0.5-2% of the total mass of other raw materials (black talcum powder + LiF + NaF + CaF2). The preparation raw materials of the luminescent glass are easy to obtain and low in price, the process is simple, and industrial production is easy; the emission peak of the obtained rare earth doped luminescent glass under the excitation of purple light / ultraviolet light is 450-750 nm, the internal quantum efficiency is greater than or equal to 85%, and the luminous intensity at 150 DEG C is more than 85% of the luminous intensity at room temperature. A light source packaged by the prepared luminescent glass has the characteristics of warm white light output, low color temperature (CCTlt, 4500K), high color rendering index (CRIGt, 90) and high lumen efficiency (LEgt, 851m / W).

The invention relates to an oil-resistant and corrosion-resistant cable sheath material for a robot as well as a preparation method and application thereof. The oil-resistant and corrosion-resistant cable sheath material is particularly suitable for harsh environments such as underwater robots. According to the cable material, ultra-high molecular weight polypropylene, nitrile rubber, a fluorine-containing elastomer, a compatilizer, a filler and the like are used as main raw materials, and the ratio and performance of all the components are optimized, so that the oil resistance, acid and alkali corrosion resistance, salt penetration resistance and wear resistance of the cable material are remarkably improved, and meanwhile, the mechanical properties such as high tensile strength and elongation at break are maintained. According to the invention, the EPDM-g-MAH, the EPDM-g-MMA or the EPDM-g-GMA is selected as the compatilizer, so that the problem of compatibility between the polypropylene and the nitrile rubber is effectively solved. In addition, montmorillonite and talcum powder in a specific particle size range are adopted as a filler combination, so that the performance of the cable material is further optimized. The cable sheath material has remarkable advantages in the aspects of oil resistance, corrosion resistance, salt resistance and the like, the stability of the cable sheath material in severe environments is improved, and the cable sheath material is suitable for harsh environments such as underwater robots.

The invention discloses a biodegradable polylactic acid composite material and a preparation method thereof, and relates to the technical field of polylactic acid materials. The method comprises the steps that firstly, chitosan activated through hydrochloric acid is subjected to graft modification through a KH550 silane coupling agent, meanwhile, nano-zinc oxide is subjected to surface modification through stearic acid, the chitosan and the nano-zinc oxide are mixed, spray drying is conducted, and antibacterial composite powder is prepared; the preparation method comprises the following steps: performing hydrochloric acid activation and KH570 silane coupling agent modification on nano silicon dioxide, performing hydroxypropylation modification on alkali lignin, and performing reflux crosslinking reaction on the modified alkali lignin, KH570 modified nano silicon dioxide, polycaprolactone, methyl methacrylate and azodiisobutyronitrile to prepare a heat-resistant reinforcer; uniformly mixing polylactic acid, poly (butylene succinate), the antibacterial composite powder, the heat-resistant reinforcer, tributyl citrate, polyethylene glycol and talcum powder, and extruding and granulating by using a twin-screw extruder to obtain the heat-resistant antibacterial material. The composite material prepared by the invention has excellent antibacterial property, heat resistance and biodegradability.

The invention relates to the technical field of electric power facilities, in particular to a high-strength flame-retardant fireproof cable and a preparation method thereof. The phosphonitrile flame retardant is prepared by adding phosphonitrilic chloride trimer, phenylphosphonic acid, triethylamine and melamine. Then, 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, the modified carbon nanotubes and the flame-retardant modified halloysite nanotubes are used as main raw materials, and the flame-retardant filler is prepared. The preparation method comprises the following steps: mixing polyolefin, a phosphazene flame retardant, a flame-retardant filler, talcum powder, gum and stearic acid, fully stirring and melting to obtain a sizing material, and carrying out crosslinking, granulation and molding on the sizing material to obtain the cable protection sleeve. And wrapping the outermost layer of the cable with the cable protection sleeve to obtain a finished cable. The finished cable prepared by the invention has good flame retardance and mechanical strength, so that the cable has a wide application prospect in the technical field of electric power facilities.

The invention relates to the technical field of preparation of waterproof coatings, and particularly discloses a highly environment-friendly polyurethane waterproof coating and a preparation method of the highly environment-friendly polyurethane waterproof coating. 30.0 to 55.0 parts of polyether polyol; 8.0 to 12.0 parts of a plasticizer; 2.0 to 5.0 parts of titanium dioxide; 15.0 to 29.0 parts of talcum powder; 3.0 to 10.0 parts of heavy calcium carbonate; 2.0 to 7.0 parts of calcined kaolin; 0.05 to 0.2 part of a graphene nanosheet; 0.03 to 0.1 part of a carbon nano tube; 0.05 to 0.3 part of a catalyst; 0.5 to 1.5 parts of latent curing agent; 0.05 to 0.15 part of a stabilizing agent; 0.2 to 0.3 part of an antioxidant; 0.1 to 0.2 part of an ultraviolet light absorber; 0.2 to 0.4 part of a mildew preventive; 0.5 to 1.0 part of a bio-based material; due to the addition of the graphene nanosheets and the carbon nanotubes, the crack resistance and flexibility of the coating are remarkably enhanced, the coating can meet the application requirements in a complex stress environment, and the coating has better heat dissipation capacity due to the high heat conduction characteristic of the graphene nanosheets.

The invention relates to the technical field of explosion suppression, in particular to a composite powder explosion suppressant and a design method and a preparation method thereof. The composite powder explosion suppressant is prepared from the following components in parts by mass: 20 to 25 parts of aluminum oxide, 10 to 20 parts of magnesium oxide, 20 to 30 parts of silicon dioxide, 1 to 3 parts of cerium oxide, 10 to 15 parts of potassium bicarbonate, 10 to 15 parts of sodium bicarbonate, 3 to 8 parts of gas-phase hydrophobic white carbon black and 2 to 6 parts of talcum powder. The composite powder explosion suppressant disclosed by the invention is high in explosion suppression efficiency; the metal oxide component screened through quantum chemistry calculation has good explosion suppression performance, and all the components in the composite powder explosion suppressant have a synergistic effect, so that hydrogen explosion can be effectively inhibited.

The invention belongs to the technical field of composite materials, and particularly discloses a polypropylene composite material, a preparation method thereof and automobile interior and exterior ornaments.The polypropylene composite material is prepared from, by weight, 40-60 parts of first polypropylene resin, 15-25 parts of second polypropylene resin, 6-25 parts of flexibilizer, 18-23 parts of talcum powder, 0.1-1.5 parts of weather-proof agent and 1.5-3 parts of antioxidant; wherein the melt index of the first polypropylene resin is smaller than that of the second polypropylene resin; the mesh number of the talcum powder is 2250 to 5000. The polypropylene composite material has relatively high low-temperature impact resistance and relatively high rigidity, and can improve the safety performance of an automobile when being applied to interior and exterior ornaments of the automobile.

The invention relates to the technical field of power cables, and provides a corrosion-resistant insulated power cable which sequentially comprises a conductor, an insulating layer and a sheath layer from inside to outside, and the sheath layer comprises the following raw materials in parts by weight: 70-80 parts of polyethylene, 20-25 parts of polyvinyl chloride, 10-15 parts of filler, 6-8 parts of a compatilizer, 1-3 parts of a plasticizer, 0.5-1.5 parts of an antioxidant, 1-2 parts of a lubricant and 1-2 parts of a cross-linking agent. The filler comprises the following raw materials in parts by weight: 60-70 parts of talcum powder, 30-40 parts of kaolin and 8-10 parts of a nitrogen-containing fluorinated aromatic compound. According to the technical scheme, the problem of poor corrosion resistance of the insulated power cable in the prior art is solved.

The invention relates to the technical field of paint, in particular to buried pipeline outer coating paint and a preparation method thereof. The coating comprises a component A and a component B, and the mass ratio of the component A to the component B is (2.12-2.39): 1; the component A comprises the following components in parts by weight: 40-50 parts of epoxy resin, 0-5 parts of a reactive diluent, 2-3 parts of an epoxy resin toughening agent, 2-3 parts of aluminum paste, 0-20 parts of mica powder, 5-20 parts of talcum powder, 5-10 parts of pigment, 5-20 parts of glass flakes, 1-2 parts of organic bentonite, 1-2 parts of a silane coupling agent, 0.1-0.5 part of a dispersing agent, 0.1-0.5 part of a defoaming agent and 0.1-0.5 part of a flatting agent; the component B is a cardanol modified phenolic aldehyde amine curing agent; the hyperbranched modified epoxy resin cooperates with the cardanol modified phenolic aldehyde amine curing agent and the epoxy resin flexibilizer to improve the comprehensive performance of the coating; the cathodic disbonding resistance of the coating is improved through the aluminum paste; therefore, the paint which has good comprehensive performance and can meet various corrosive environments is obtained.

The invention discloses a waterborne epoxy coating for heavy corrosion prevention and a preparation method of the waterborne epoxy coating, and relates to the technical field of coatings. The waterborne epoxy resin, the waterborne epoxy curing agent, the titanium dioxide, the barium sulfate, the superfine talcum powder, the mica powder, the zinc phosphate, the aluminum tripolyphosphate, the superfine mica iron oxide, the glass flakes and the like are used as raw materials for preparing the epoxy coating. Meanwhile, the sheet structures of the superfine mica iron oxide and the glass flakes prolong the time for water and a corrosive medium to reach the surface of the base material, and sufficient dissociation time is given to phosphate. The anticorrosive paint disclosed by the invention has good flexibility and corrosion resistance.

The invention provides a sound-insulation porous ceramic tile and a preparation method thereof, and belongs to the field of building materials. The sound-insulation porous ceramic tile is prepared from the following raw materials: 20 to 30 parts of kaolin, 18 to 22 parts of quartz sand, 12 to 18 parts of potassium feldspar, 3 to 7 parts of talcum powder, 3 to 7 parts of silicon carbide powder, 2 to 4 parts of ferrosilicon alloy powder, 0.5 to 1.5 parts of sodium bicarbonate, 3 to 5 parts of hollow glass beads, 1 to 3 parts of zirconium oxide microspheres, 1 to 3 parts of silicon dioxide aerogel particles, 3 to 5 parts of acrylate emulsion, 1 to 3 parts of butadiene styrene rubber emulsion, 0.5 to 1.5 parts of polyvinyl alcohol solution and 1 to 2 parts of polyurethane dispersion. The composite material comprises the following components in parts by weight: 30-60 parts of polypropylene, 0.3-0.7 part of a dispersing agent, 0.2-0.4 part of a defoaming agent, 0.8-1.6 parts of reinforced fibers and 9-13 parts of deionized water. The raw materials of the porous ceramic tile are reasonably designed, the sound insulation performance of the porous ceramic tile is improved, and full-band efficient sound insulation is achieved.

The invention provides an antistatic talcum powder and graphene composite reinforced material and an in-situ polymerization process thereof, and belongs to the technical field of polymer composite materials. According to the antistatic talcum powder and graphene composite reinforced material and the in-situ polymerization process thereof, the antistatic talcum powder and graphene composite reinforced material is prepared from the following raw materials in parts by weight: 100 parts of matrix resin, 5-30 parts of modified talcum powder, 0.5-5 parts of functionalized graphene and 0.1-2 parts of an antistatic synergist, the modified talcum powder is subjected to surface treatment by a silane coupling agent, the particle size range is 1-10 [mu] m, and the functionalized graphene is graphene oxide or reduced graphene oxide. Through the synergistic effect of the silane coupling agent modified talcum powder and the functionalized graphene and in combination with the ionic liquid antistatic agent, the surface resistance of the material is remarkably reduced. Nanoscale dispersion is realized by adopting an in-situ polymerization process, and the method is suitable for the field of high-performance engineering plastics.

The invention discloses a preparation method of a rubber waterstop material with a low compression set rate, which comprises the following steps: firstly, carrying out blending reaction on hydroxyl silicone oil and boric acid to obtain liquid polyborosiloxane; the preparation method comprises the following steps: adding liquid polyborosiloxane and natural rubber into an internal mixer according to a ratio, and carrying out internal mixing to obtain a mixture; adding zinc oxide, an anti-aging agent, stearic acid and an anti-tearing agent into the obtained mixture, and continuously mixing; continuously adding kaolin talcum powder, calcium carbonate, calcium oxide, white carbon black, N550, N330 and KH550, and internally mixing again to obtain a preform; adding a vulcanization accelerator and a vulcanizing agent into the preform, and continuously mixing to obtain a rubber material to be vulcanized; and vulcanizing and forming the rubber material to be vulcanized to prepare the rubber water-stop belt material with the low compression set rate. According to the invention, the compression set rate of the rubber material can be reduced while the tensile strength, elongation, tear resistance and other properties of the rubber are not sacrificed, so that the product performance is enhanced.

The invention relates to the technical field of high polymer materials, and discloses a low-VOC (volatile organic compound) polypropylene composite material and a preparation process thereof, the low-VOC polypropylene composite material comprises the following raw materials: polypropylene, maleic anhydride grafted polypropylene, fluorenyl silicone oil, benzophenone coated talcum powder, activated carbon, an antioxidant, a plasticizer and a lubricant; the interface bonding force between a siloxane long-chain flexible structure and a polypropylene matrix material is improved by preparing fluorenyl silicone oil, the thermal stability of the composite material is effectively improved by combining fluorene rings, thermal decomposition products are reduced, VOC components are physically adsorbed and captured through a multilevel porous structure of activated carbon, VOC volatilization can be effectively reduced, and the environmental protection capacity of the composite material can be enhanced. Meanwhile, benzophenone-coated talcum powder is added into the polypropylene composite material matrix, so that the wear resistance and ultraviolet resistance of the polypropylene composite material matrix are enhanced, and the service life of the polypropylene composite material is effectively prolonged.

The present invention relates to an insulating rubber sheath cable repair strip and a preparation method and application thereof. The insulating rubber sheath cable repair strip comprises a reinforcing tensile element and a re-vulcanizable rubber strip, wherein the reinforcing tensile element is arranged at the center of the re-vulcanizable rubber strip; the re-vulcanizable rubber strip comprises: 86-90 parts of chlorinated polyethylene, 10-14 parts of ethylene propylene rubber, 10-14 parts of magnesium oxide, 7-9 parts of flame retardant, 0.7-0.9 parts of antioxidant, 10-14 parts of carbon black, 13-17 parts of white carbon black, 18-22 parts of clay, 10-14 parts of talc, 13-17 parts of plasticizer, 10-14 parts of diisooctyl adipate, 0.7-0.9 parts of paraffin wax, 0.9-1.1 parts of polyethylene wax, 2.3-2.7 parts of vulcanizing agent, and 1.8-2.2 parts of vulcanizing agent. The present invention solves the problems of facilitating the repair of cable sheaths and facilitating production, more effectively saving costs and reducing safety.

The invention relates to the technical field of polymer composite materials. The invention provides a high-impact high-modulus PP (polypropylene) composite material for automotive interiors. The high-impact high-modulus PP composite material comprises the following components in parts by weight: 25-40 parts of polypropylene A, 25-40 parts of polypropylene B, 10-18 parts of a toughening agent, 3-5 parts of a compatilizer and 5-10 parts of negative ion functional powder. The invention also provides a preparation method of the high-impact high-modulus PP composite material for the automotive trim. The preparation method comprises the following steps: S1, preparing the negative ion functional powder; s2, uniformly mixing the polypropylene A, the polypropylene B, the flexibilizer, the compatilizer, the talcum powder, the needle-like alkaline earth metal salt, the negative ion functional powder, the antioxidant, the lubricant, the light stabilizer and the color master batch at a high speed, adding the mixture into a double-screw extruder for melting, and then performing extrusion and granulation to obtain the high-impact high-modulus PP composite material for the automotive trim. According to the invention, the impact and modulus of the composite material are improved, and high-concentration sustainable release of negative ions is realized.

The invention relates to a PC / PET alloy material as well as a preparation method and application thereof, and belongs to the technical field of high polymer materials. The PC / PET alloy material disclosed by the invention is prepared from the following components in parts by weight: 38 to 57 parts of PC resin, 18 to 32 parts of PET resin, 9 to 16 parts of talcum powder, 1.5 to 8 parts of toughening agent and 0.05 to 0.35 part of ester exchange inhibitor, the pH value of the talcum powder is less than 9, and the D50 particle size is 2-3 [mu] m; the intrinsic viscosity of the PET resin is 0.7 to 0.9 dL / g; the ester exchange inhibitor comprises at least one of sodium pyrophosphate and disodium dihydrogen pyrophosphate. The PC resin and the medium-viscosity PET resin are compounded, and the talcum powder with small pH value and small particle size is selected, so that the degradation of PC can be reduced, the shear heat of a PC / PET system is reduced, and good impact performance and good appearance after heat retention are realized.

The invention relates to a high-reflection-high-emissivity radiation refrigeration coating for power equipment and a preparation method of the high-reflection-high-emissivity radiation refrigeration coating. The coating comprises deionized water, styrene-acrylic emulsion, titanium dioxide, hollow glass beads, zinc oxide, hexacyclic stone powder, a dispersing agent, a defoaming agent, a coalescing agent and a mildew preventive, and mica powder, calcined kaolin, talcum powder, silicon oxide micro powder or block copolymer emulsion can be optionally added. According to the coating, the synergistic effect of various infrared functional fillers and an emulsion matrix is optimized, so that high reflection of sunlight and high emission of middle and far infrared bands are realized. The coating has excellent cooling capacity, self-cleaning performance and environmental adaptability.

The present invention belongs to the technical field of PVC projection films, and particularly relates to an environmentally friendly flame-retardant PVC rear projection film, its preparation method and uses. The PVC projection film uses inorganic and organic flame retardants. Among them, the organic flame retardant contains at least WSFR-PCF or WSFR-9702; the inorganic powder flame retardant is aluminum hydroxide and modified talc powder. While improving the flame retardancy of the PVC projection film, the light transmittance is not affected or is improved, and problems such as environmental friendliness and white streaks are better solved, meeting the latest regulatory requirements of the European and American markets.

The present invention provides an aqueous polyhydroxyalkanoate coating, a preparation method therefor, and a use thereof. The preparation method for the aqueous polyhydroxyalkanoate coating comprises: subjecting a polyhydroxyalkanoate fermentation solution to cell wall breaking and extraction, to obtain an aqueous polyhydroxyalkanoate dispersion, and then mixing the aqueous polyhydroxyalkanoate dispersion with an additive to obtain the aqueous polyhydroxyalkanoate coating, a dispersant and talcum powder being added during the cell disruption process. By means of using talcum powder to replace a portion of a dispersant as a protective additive for PHA particles, the present invention can prevent the aggregation of PHA particles at high purity, and the resulting aqueous PHA coating exhibits good coating water resistance.

The invention relates to a lightweight foaming sole material, which comprises the following raw materials by mass: 20-30% of a PA / EBA modified blend; 10% to 20% of a TPEE / EBA modified blend; 10%-30% of an ethylene-butyl acrylate copolymer (EBA); 8%-15% of an ethylene-octylene copolymer POE; 8%-15% of brominated butyl rubber BIIR; 2%-3% of talcum powder; 5%-10% of a coupling agent; 0.5%-1% of a lubricant; 1%-2% of a foaming aid; 0.3%-1% of a cross-linking agent; and 3%-7% of a foaming agent. The foaming sole material provided by the invention has the advantages of high elasticity, tear resistance and wrinkle resistance; the preparation method is simple and low in production cost, and has a wide application prospect in the field of foamed sole materials.