393 results about "Zinc stearate" patented technology

The invention discloses a flexible fireproof cable and a preparation method thereof, and belongs to the technical field of cables. The cable comprises a conductor, a mica insulation layer, a copper protection layer, a buffer layer and a cable sheath layer. The buffer layer is made of a polyurethane foaming material; the cable sheath layer is prepared from the following components in parts by weight: 80 to 100 parts of methyl vinyl silicone rubber, 18 to 20 parts of modified carbon black, 5 to 8 parts of titanium dioxide, 1 to 2 parts of platinum catalyst, 3 to 6 parts of hydroxyl silicone oil, 0.5 to 1 part of zinc stearate and 0.8 to 1 part of dicumyl peroxide. The modified carbon black is added into the raw materials of the sheath layer, so that the compatibility, the interface bonding force and the flame retardant property of the carbon black and a silicone rubber matrix are effectively improved, and the mechanical property, the wear resistance and the fireproof property of the cable sheath layer are remarkably enhanced.

The invention relates to the field of foaming materials, in particular to a low-solvent-residue expandable polystyrene material and a preparation method thereof. The expandable polystyrene material with low solvent residue comprises the following raw materials in percentage by weight: 0.35-0.45% of a free radical initiation system, 0.35-0.45% of S, S, S, S, S, S, S, S, S, S, S, S, S, S, S According to the present invention, the material comprises, by weight, 0.1-0.15% of S, S '-bis (alpha, alpha'-dimethyl-alpha ''-acetoxy) trithiocarbonate, 0.15-0.2% of ascorbic acid, 0.1-0.2% of a nucleating agent, 0.2-0.3% of a suspending agent, 0.001-0.003% of an emulsifier, 5-6% of a foaming agent, 0.15-0.25% of a plasticizer, 0.001-0.002% of hydroxyethyl cellulose, 0.05% of sodium phosphate, 0.1-0.2% of zinc stearate, and 0.1-0.2% of glyceryl stearate, the obtained material has low solvent residue, meets food safety requirements, and is suitable for food packaging.

The invention discloses a degradable express bag material and a preparation method thereof, and relates to the technical field of high polymer materials. The invention discloses a degradable express bag material. The composite material is prepared from the following raw materials in parts by weight: 40 to 50 parts of poly (butylene adipate-co-terephthalate), 20 to 30 parts of polycaprolactone, 5 to 8 parts of modified bamboo fiber, 2 to 4 parts of modified nano montmorillonite, 3 to 6 parts of tributyl citrate, 0.1 to 0.3 part of antioxidant 1076, 1 to 2 parts of iron dithiocarbamate master batch, 2 to 3 parts of maleic anhydride grafted poly (butylene adipate-co-terephthalate) and 0.3 to 0.6 part of zinc stearate. 0.1 to 0.3 part of baicalein; and 1 to 3 parts of chitosan-sorbitol composite coating liquid. According to the degradable express bag material, poly (butylene adipate-co-terephthalate) and polycaprolactone are used as main degradable raw materials, modified bamboo fibers and modified nano-montmorillonite are matched to enhance the mechanical property, an antioxidant 1076, baicalein and the like are added to guarantee the stability and functionality, temperature is accurately controlled in the preparation process, multi-step modification is adopted for optimizing component combination, and the degradable express bag material is prepared. The performance is improved through the composite coating, degradability is achieved, and good usability is achieved.

The invention relates to a preparation method of a high-elastic wear-resistant rubber sole. Comprising the following steps: S1, uniformly mixing 50-60 parts by weight of epoxy resin, 10-20 parts by weight of a polyurethane-acrylate copolymer, 20-30 parts by weight of an elastic complex, 3-5 parts by weight of stearic acid, 1-4 parts by weight of zinc oxide, 3-5 parts by weight of zinc stearate and 2-4 parts by weight of zinc oxide; the preparation method comprises the following steps: uniformly mixing 1-3 parts by weight of magnesium oxide and 1-3 parts by weight of an AC foaming agent in an internal mixer at the temperature of 60-70 DEG C, internally mixing for 30-60 minutes, continuously mixing for 15-20 minutes at the temperature of 90-95 DEG C, granulating after open milling, and standing for 20-24 hours at room temperature to obtain a molding master batch; s2, putting the molding master batch into a foaming mold for compression molding, controlling the mold closing pressure to be 15-25MPa, then heating to 180-190 DEG C together with the foaming mold, performing vulcanization treatment for 8-15 minutes, cooling, and performing standing treatment at room temperature for 20-24 hours to obtain the high-elasticity wear-resistant rubber sole. According to the high-elastic wear-resistant rubber sole, the preparation method and the damping shoe, a good damping effect is achieved, and certain mechanical strength is achieved.

The invention discloses an anti-aging light-conversion silver black mulching film and a preparation method thereof, and belongs to the technical field of agricultural polymer films. The preparation method comprises the following steps: S1, mixing low-density polyethylene powder, aluminum paste, a complex light conversion agent, dioctyl phthalate and EVA (Ethylene Vinyl Acetate) to prepare silver light conversion master batches; s2, vinyl-terminated fluorosilicone oil, tert-butyl peroxybenzoate and linear low-density polyethylene powder are stirred for a reaction, and modified low-density polyethylene is obtained; the modified low-density polyethylene, maleic anhydride grafted polyethylene, a multi-effect light stabilizer and polyethylene wax are subjected to banburying granulation, and modified light-stable master batches are obtained; s3, carrying out banburying granulation on the low-density polyethylene powder, the polyethylene powder, carbon black, zinc stearate, ethylene bis-stearamide and the EVA powder to obtain black master batches; s4, blending the silver layer and the black layer, and performing double-layer co-extrusion to obtain the light-conversion silver-black mulching film. The light-conversion silver black mulching film provided by the invention has good mechanical properties and aging resistance.

The invention relates to the technical field of high polymer material modification, in particular to a top whitening resistant polypropylene composite material as well as a preparation method and application thereof. The top whitening resistant polypropylene composite material is prepared from the following components in parts by weight: 60 to 80 parts of polypropylene resin, 20 to 30 parts of talcum powder, 5 to 15 parts of hydrogenated styrene-butadiene-styrene block copolymer, 0.1 to 0.5 part of beta crystal form nucleating agent, 3 to 8 parts of maleic anhydride grafted polypropylene, 0.3 to 1 part of composite antioxidant and 0.5 to 2 parts of zinc stearate. Through the synergistic effect of the hydrogenated styrene-butadiene-styrene block copolymer toughening system and the beta crystal form nucleating agent in a specific formula, high rigidity (the filling amount of talcum powder reaches 20-30 parts) is kept, and meanwhile, the top whitening resistance of the composite material is remarkably improved; the method is suitable for parts such as automobile dashboards and door plates which have strict requirements on surface quality.

The invention discloses a high-strength polyethylene film and a preparation method thereof, and relates to the technical field of high polymer materials. The invention discloses a high-strength polyethylene film. The high-density polyethylene composite material comprises the following raw materials in parts by weight: 40-60 parts of high-density polyethylene, 13-25 parts of low-density polyethylene, 5-10 parts of an ethylene-vinyl alcohol copolymer, 10-15 parts of modified nano calcium carbonate, 3-5 parts of modified lignin fibers, 0.5-1 part of an antioxidant 1010, 0.3-0.7 part of a light stabilizer 770, 1-2 parts of zinc stearate and 2-3 parts of maleic anhydride grafted polyethylene. The coating comprises, by weight, 20-30 parts of polyethylene glycol terephthalate, 3-5 parts of poly (butylene adipate-co-butylene terephthalate), 2-4 parts of talcum powder, 1-3 parts of polymethyl methacrylate and 30-45 parts of deionized water. The high-strength polyethylene film is scientific in raw material ratio, and contains various modified components to enhance the performance; the modified nano calcium carbonate and lignin fiber technology is advanced, and compatibility and stability are improved; the preparation method is reasonable, and the film has the characteristics of high strength, good toughness, oxidation resistance, light resistance and the like and is wide in application through two-way stretching and other procedures.

The invention relates to an absorbable bone hemostasis and repair stent. The absorbable bone hemostasis and repair stent comprises the following raw materials in parts by weight: 15-60 parts of an excipient, 15-60 parts of a softening agent and 5-70 parts of a bone repair promoting component, the excipient is prepared from a polyoxyethylene-polyoxypropylene copolymer; the softening agent comprises a semi-solid mobile phase polymer; the bone repair promoting component comprises a coating and a core, the coating comprises a polylactic acid-glycolic acid copolymer, zinc stearate and potassium bromide, the core comprises calcium phosphate particles, and the coating wraps the surface of the core. The preparation method comprises the following steps: preparing the bone repair promoting component; and preparing the absorbable bone hemostasis repair stent. The absorbable bone hemostasis and repair stent is high in hemostasis and collapse resistance and has good inflammation regulation and bone repair promoting effects. The absorbable bone hemostasis and repair stent can be used for bone hemostasis and bone repair promotion of any bone injury wound.

The invention relates to the technical field of high polymer materials, and discloses a PVC (polyvinyl chloride) pipe for communication wiring and a preparation method thereof, and the pipe is prepared from polyvinyl chloride resin, a calcium-zinc composite heat stabilizer, stearic acid, polyethylene wax, maleic anhydride grafted polyethylene, an acrylate processing aid, nano calcium carbonate and an active lubricating precursor. The active lubricating precursor is a mixture formed by compounding amino-terminated polysiloxane and zinc stearate through heating and swelling. The preparation method of the PVC pipe for communication wiring comprises the steps of pre-preparation of the active lubricating precursor, multi-stage temperature-control high-speed mixing and reactive extrusion molding. Through in-situ chemical reaction of amino-terminated polysiloxane and maleic anhydride grafted polyethylene in the extrusion process, chemical anchoring of lubricating molecules is realized, the problem of precipitation of a lubricant is solved, and meanwhile, the lasting smoothness, impact strength and dimensional stability of the inner wall of the pipe are improved by cooperating with nano calcium carbonate.

The invention relates to a flame-retardant power cable material and a preparation method thereof, and belongs to the technical field of high polymer materials. The flame-retardant power cable material is composed of a conductor wire core, an insulating layer and an outer sheath, wherein the insulating layer and the outer sheath sequentially coat the outer side of the conductor wire core; the outer sheath is prepared from the following raw materials in parts by weight: 80-120 parts of polypropylene resin, 20-30 parts of nitrile rubber, 5-20 parts of a modified flame retardant, 3-5 parts of dioctyl phthalate, 10-20 parts of nano silicon dioxide, 1-3 parts of butyl stearate and 3-5 parts of zinc stearate; the flame-retardant power cable material prepared by the invention not only has good flame-retardant and tensile strength effects, but also has an excellent anti-aging effect.

The embodiment of the invention discloses a degradable filling plastic master batch and a preparation method thereof. The degradable filling plastic master batch comprises the following components: a bio-based material, an accelerant, a lubricant, a modifier, an antioxidant, a cross-linking agent and a coupling agent, wherein the bio-based material is polylactic acid; the accelerant is modified starch; the plastic modified material is calcium carbonate; the modifying agent comprises pe wax and / or ebs; the lubricant comprises zinc stearate and POE (Polyolefin Elastomer); the antioxidant is a composition of lignin and phosphite ester; the cross-linking agent is triallyl isocyanate, and / or epoxidized soybean oil; the coupling agent is a silane coupling agent or an aluminic acid coupling agent, can provide the strength of the degradable filling master batch, is not prone to deformation during stretching, has an anti-oxidation effect, is more reinforced and durable, and can achieve the purpose of rapid degradation after waste treatment.

The invention discloses a cold-drawing heat-setting high-elasticity cowhells belt composite material, and relates to the technical field of composite materials. The invention relates to a cold-drawing heat-setting high-elasticity cowhells belt composite material. The composite material is prepared from the following raw materials in parts by weight: 12 to 18 parts of nano calcium carbonate, 0.1 to 0.4 part of silane coupling agent KH-550, 30 to 40 parts of modified thermoplastic polyurethane, 18 to 22 parts of ethylene-vinyl acetate copolymer, 5 to 8 parts of natural rubber, 3 to 5 parts of diisononyl phthalate, 0.3 to 0.5 part of compound antioxidant, 0.2 to 0.4 part of ultraviolet light absorber UV-9, 6 to 8 parts of aramid short fiber and 0.2 to 0.5 part of zinc stearate. 10 to 15 parts of modified polyethylene terephthalate fiber, 0.2 to 0.3 part of graphene and 0.5 to 1.5 parts of organic silicon treatment liquid. According to the cold-drawing heat-setting high-elasticity cowhells belt composite material, a matrix is reinforced through modified thermoplastic polyurethane and modified polyethylene terephthalate fibers, and the strength is improved through aramid short fibers subjected to plasma pretreatment. Molecular orientation is optimized by a cold drawing and heat setting process, weather resistance is enhanced by an organic silicon coating, and good overall elasticity, high strength and excellent wear resistance and weather resistance are achieved.

The invention belongs to the technical field of pipes, and particularly relates to an ultra-high molecular weight polyethylene pipe super-lubrication extrusion aid and a preparation method thereof. The extrusion aid consists of the following components in parts by mass: 5-11 parts of an internal lubricant, 4-10 parts of an external lubricant, 3-5 parts of a plasticizer, 12-25 parts of a filler and 0.5-2 parts of an antioxidant, the external lubricant is prepared by mixing organic silicon modified epoxy oleic acid triglyceride, erucic acid, zinc stearate and stearic acid according to the mass ratio of 100: (20-40): (10-25): (5-15). The ultra-lubricating extrusion aid for the ultra-high molecular weight polyethylene pipe prepared by the invention realizes stable extrusion of ultra-high molecular weight polyethylene under the conditions of low energy consumption, high yield and high quality.

The invention belongs to the technical field of plastic filling modification, and discloses a high-specific-gravity polypropylene filling master batch and a preparation method thereof. The high-specific-gravity polypropylene filled master batch is mainly prepared from the following raw materials in parts by mass: 8-28 parts of polypropylene, 70-92 parts of modified barium sulfate powder, 1-4 parts of a lubricant, 4-8 parts of a titanate coupling agent, 3-6 parts of zinc stearate and 0.5-2 parts of an antioxidant. The barium sulfate powder subjected to surface modification treatment is added into the polypropylene master batch, so that the polypropylene master batch has very high specific gravity and can be filled and modified in various high polymer material products with specific gravity requirements.

The invention relates to a talcum powder filled polypropylene composite material based on surface modification and process cooperation and an injection molding pocking mark defect inhibition method. The material is composed of co-polypropylene, acidic salt-titanate composite modified talcum powder, flaky mica (5-10 [mu] m), a POE flexibilizer, a zeolite molecular sieve, an MAH-g-PP compatilizer, a zinc stearate dispersant and the like. According to the invention, the three measures of surface modification treatment, formula design and process purification technology are combined, and the problem of pitting defects (surface pits and white spots) generated in the injection molding process of the talcum powder filled polypropylene composite material is mainly solved. Through filler surface modification treatment, formula design and a process purification technology, the hard spot defect rate is reduced by about 85%, and the method is suitable for products with high surface quality requirements, such as automobile bumpers and instrument panels.

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.

This invention discloses a composite additive for repairing the foaming properties of recycled polystyrene, relating to the field of recycled polystyrene. It comprises: 30-50 parts of a matrix repair component, 20-35 parts of a nucleating-reinforcing composite component, 10-20 parts of an antibacterial and flame-retardant composite component, and 5-10 parts of a dispersant. Modified rosin ester and polybutadiene oligomers are used as the matrix repair component, combined with nano-calcium carbonate and talc as the nucleating-reinforcing composite component, and further combined with phytic acid and quaternized chitosan functional components and zinc stearate dispersant to form a stable composite system. This system imparts antibacterial and flame-retardant properties to the product, solving the problem of single-function traditional additives, significantly improving the quality of recycled material products, realizing high-value utilization of recycled materials, and simultaneously repairing damaged molecular chains in recycled materials, improving processing flowability and cell nucleation effect, thus compensating for the deficiency of reduced foaming performance in recycled polystyrene.

The invention provides a melamine resin powder toughening granulation method and granulation equipment thereof, and relates to the technical field of thermosetting resin.The melamine resin powder toughening granulation method comprises the following preparation processes that firstly, thermoplastic resin powder is added into a solvent to prepare a thermoplastic resin solution; 2, wrapping inorganic rigid particles with a thermoplastic resin solution to obtain a mixture; 3, the mixture is subjected to spray drying and ground into superfine powder, and then the superfine powder is mixed with melamine powder to obtain composite particles; step 4, adding carboxymethyl cellulose and zinc stearate into the composite particle material, and carrying out double-roller pressing by virtue of a pelletizer, so as to obtain a flaky material; step 5, crushing and granulating the flaky material to obtain granules; sixthly, screening the particles through a screen to obtain finished particles; and 7, re-granulating the unqualified material until qualified uniform melamine resin particles are obtained. Through the technical improvement of the three steps of wrapping, spray drying and grinding, on the basis that the toughness and the flowability of the obtained granules are improved, the uniformity of products formed by compression molding is good.

The invention relates to the field of metal nano material preparation, and discloses a supersonic gas atomization preparation method of high-dispersity spherical nano aluminum powder, which comprises the following steps: establishing a constant-temperature aluminum melt flow, and constructing a supersonic gas-solid two-phase atomization jet flow; nitrogen with the temperature lower than the melting point of the particles is used for carrying flow, solid zinc stearate particles are carried and accelerated to supersonic speed, and the aluminum melt flow is impacted; solid rigid momentum of the particles penetrates through an aluminum liquid interface to enter liquid drops, thermal relaxation time difference is used for inducing the particles to generate phase change decomposition in the liquid drops, the liquid drops are broken from the inside through volume expansion, and a carbon-zinc composite isolation layer is formed in situ through decomposition products. And high-efficiency nanocrystallization crushing under low energy consumption is realized.

The application relates to the technical field of building materials, in particular to an extruded sheet and a preparation method thereof, which comprises the following raw materials in parts by weight: polystyrene resin 60-70 parts, copolymer resin 30-40 parts, foaming agent 5-10 parts, antioxidant 0.5-0.8 parts, zinc stearate 1-2 parts and calcium carbonate 0.2-0.5 parts. The gradient segment design of the amphiphilic copolymer and the sodium alginate-calcium ion crosslinking network are utilized, the compression strength and the bending strength of the prepared extruded sheet are improved, and the extruded sheet has good rigidity and anti-deformation capacity. Meanwhile, the water vapor permeability of the extruded sheet is low, which indicates that the prepared extruded sheet can effectively balance the barrier and air permeability requirements.

The invention relates to the technical field of polyethylene film materials, in particular to a weather-resistant flame-retardant PE composite film and a preparation method thereof.The preparation method comprises the following steps that S1, a PE-based copolymer, an antioxidant and a light stabilizer are mixed and then discharged; s2, mixing LDPE resin, magnesium hydroxide, a silane coupling agent and zinc stearate, and discharging; s3, the outer-layer mixture and the core-layer mixture are put into a double-screw extruder for melt extrusion granulation and drying, and outer-layer master batches and core-layer master batches are obtained; and S4, respectively putting the outer-layer master batch and the core-layer master batch into an extruder for extrusion, and carrying out three-layer co-extrusion casting film forming, cooling shaping and rolling to obtain the weather-resistant flame-retardant PE composite film. The weather-resistant flame-retardant PE composite film obtained by the preparation method disclosed by the invention has relatively good weather resistance and flame retardance.

The application belongs to the technical field of optical materials, and particularly discloses a synthesis method of core-shell quantum dots based on surface activation, which comprises the following steps: S1, preparing a quantum dot core; S2, degassing reaction is carried out on zinc precursor, octadecene and oleylamine in proportion, then the quantum dot core obtained in S1 is injected, a metal alkyl compound is added, and the temperature is increased to 230-250 DEG C; S3, the shell precursor is injected for 3-4 times, the temperature is increased at the same time, the inner shell is grown, zinc stearate and TOP-S are injected again, the ZnS shell is grown, and the InP core-shell quantum dots with regular morphology are obtained. The synthesis method of core-shell quantum dots based on surface activation is adopted, the quantum dots with controllable morphology and size distribution are obtained, the method is suitable for industrial production, and has wide applicability.

The application relates to the technical field of concrete, and particularly discloses a concrete containing building waste and used for preparing a fabricated prefabricated composite board, which is composed of the following components: water, cement, fly ash, fine aggregate, modified recycled coarse aggregate and water reducing agent; the modified recycled coarse aggregate is modified by the following method: 1) calcium stearate and zinc stearate are mixed and heated until completely melted to obtain a modifier; 2) the recycled coarse aggregate is soaked in the modifier, the recycled coarse aggregate is filtered out, and the pretreated recycled coarse aggregate is obtained after cooling; and 3) the pretreated recycled coarse aggregate is stirred and polished in corundum, and the modified recycled coarse aggregate is obtained after filtering. The application has the advantage that the concrete containing building waste and used for preparing the fabricated prefabricated composite board has improved impermeability after solidification. The application effectively consumes the building waste and reduces environmental pollution, and is relatively environment-friendly.

The present application relates to a polyether block amide-based composition and a method for producing a sole from the composition. The composition comprises: 90-95 wt% of component A: polyether block amide resin; and 5-10 wt% of component B: a styrene copolymer, stearic acid, zinc stearate, and calcium carbonate. The present invention successfully provides a composition based on a thermoplastic elastomer material. By adding a small amount of component B, the composition is prepared into plastic granules. The plastic granules can withstand high temperature and high pressure, so that pores are more uniformly distributed in a created polymer material to achieve better foamability and elasticity, so that the composition is highly suitable for sole production. The sole exhibits comfortable feeling while ensuring inherent properties, such as skid resistance and wear resistance of rubber outsoles. The maximum elasticity of a traditional foaming process can only reach 60%, whereas the present application provides a modified process in which a material is foamed and dried, creating higher elasticity for the sole, so that the maximum elasticity can reach 85%.

The embodiment of the invention discloses a plastic filling lubricating master batch and a preparation method thereof. The plastic filling lubricating master batch comprises a filling agent, a polypropylene material, a heat stabilizer, an antioxidant, a reaction accelerator, a modifier, an elastic material, a lubricant and a coupling agent, wherein the filling agent is calcium carbonate; the polypropylene material is polypropylene 7042; the heat stabilizer is compounded by zinc stearate and a beta-diketone auxiliary stabilizer; the antioxidant comprises a main antioxidant, an auxiliary antioxidant and a synergist; the reaction accelerant is a compound of stearic acid and citric acid; the modifier is PE wax and / or EBS; the elastic material is POE (Polyolefin Elastomer); the lubricant is prepared by compounding erucyl amide and modified polyethylene wax; the coupling agent is a titanate coupling agent.

This invention discloses a BMC material for preparing food contact products and its preparation method. The material comprises the following components by mass percentage: 12%–20% food contact grade styrene-based unsaturated polyester resin (compliant with GB 4806.7-2016); 3%–10% solvent-free PMMA powder; 0.5%–1% zinc stearate; 0.2%–0.6% curing agent TBIC; 0.01%–0.1% polymerization inhibitor TBHQ; 0.01%–0.05% stabilizer BHT; 20%–45% calcium carbonate; 10%–40% aluminum hydroxide; and 5%–10% glass fiber. This invention, by using low-cost food contact grade styrene-based resin combined with solvent-free PMMA powder and optimizing the ratio of TBIC to TBHQ, achieves near-zero styrene monomer residue in the product while reducing costs. This effectively solves the problems of high cost, difficulty in processability adjustment, and monomer residue risk associated with traditional food contact grade BMC materials. The cost of the resulting material can be controlled below 7 yuan / kg, and it has both flame-retardant and high-strength properties, making it a widely viable alternative to traditional food contact grade plastics.

The invention discloses a hand brushing and spraying dual-purpose odorless anti-yellowing transparent polyurethane primer suitable for various base materials and a preparation method thereof. The primer mainly comprises a component A, a component B and a component C, the component A is mainly prepared from odorless coconut oil alkyd resin, zinc stearate, a defoaming agent, a flatting agent, an anti-settling agent, functional resin and an organic solvent; the component B is mainly prepared from an HDI (hexamethylene diisocyanate) tripolymer, a TDI (toluene diisocynate) tripolymer, a dehydrating solvent and a dehydrating agent; the component C is mainly prepared from dimethyl carbonate, n-butyl acetate and propylene glycol methyl ether acetate; the anti-settling agent is a mixed solution of polyamide wax slurry 6900-20X and n-butyl acetate, and the mass concentration of the polyamide wax slurry 6900-20X in the mixed solution is 40%; the functional resin is a mixed solution of cellulose acetate butyrate CAB-381-0.5 and n-butyl acetate, and the mass concentration of the cellulose acetate butyrate CAB-381-0.5 in the mixed solution is 20%. The odorless yellowing-resistant transparent polyurethane primer has the advantages of no blistering, no prickly heat, suitability for various base materials, dual purposes of hand brushing and spraying, and the like.

The application discloses a manufacturing process of a stamping processing protective film, which comprises the following steps: step one, stirring and mixing zinc oxide, polysebacic acid-decanediol diol and dicyclohexyl carbodiimide at 50-60 DEG C to obtain material A; step two, putting 100 parts of low-density polyethylene with a melt index of 0.5-5 g / 10 min, metallocene linear low-density polyethylene with a melt index of 1.8-2 g / 10 min, oleic acid amide, zinc stearate, stearate and an antioxidant into a mixer, uniformly mixing and then extruding and granulating in a double-screw extruder to obtain material B; step three, putting material A, material B and terpolymer polypropylene into a banbury mixer, discharging after banburying for 10-30 min to obtain a master batch; and step four, blow molding the master batch to obtain a polyethylene base material layer. The protective film improves the elongation at break of the film and also improves the puncture resistance of the protective film.

The invention relates to the technical field of high polymer materials, in particular to a pumice powder modification-based linear low-density polyethylene master batch and a preparation method thereof. The problem that an existing pumice powder modified polyethylene master batch is poor in aging resistance when being used for preparing a film is solved. The master batch disclosed by the invention is prepared from linear low-density polyethylene resin, pumice powder modified by KH-560 and a light stabilizer 944, activated nano zinc oxide, maleic anhydride grafted polyethylene, polydimethylsiloxane, a composite antioxidant and zinc stearate. During preparation, the modified pumice powder and the activated nano zinc oxide are prepared through hydrolytic condensation and loading processes, and then the linear low-density polyethylene master batch is obtained through high-speed premixing and twin-screw reaction extrusion granulation. Finally, a film prepared from the linear low-density polyethylene master batch has good aging resistance.

This application relates to the field of cable material technology, specifically disclosing a low-smoke halogen-free flame-retardant cable material, its preparation method, and the cable thereof. The low-smoke halogen-free flame-retardant cable material comprises the following raw materials: 75-95 parts polypropylene resin; 20-35 parts POE elastomer; 18-30 parts compounded flame retardant; 10-18 parts aluminum hydroxide micropowder; 5-10 parts zinc stearate; 3-7 parts polydimethylsiloxane; 0.8-2.0 parts titanate coupling agent; 0.5-1.5 parts carbon nanotubes; 2.0-4.5 parts antioxidant; 3-6 parts stabilizer; and 1.5-4.0 parts nanoscale reinforcing agent. The cable material of this application improves flame-retardant performance while also maintaining good mechanical properties. The low-smoke halogen-free flame-retardant cable obtained from this cable material possesses excellent safety protection capabilities, minimizing fire risk and secondary hazards.