5383 results about "Aging resistance" patented technology

The invention relates to a composite material for a wind power generator blade. The composite material comprises the following components in parts by weight: 40-75 parts of thermoplastic resin component, 25-60 parts of reinforced fiber component and 0-5 parts of additive. Compared with the prior art, the invention has the advantages of meeting high strength, high modulus, ageing resistance, and the like required by a wind power generator blade.

The invention discloses a temperature resistant salt tolerant high efficiency gel and a preparation method and application thereof. The preparation method is characterized in that the preparation method comprises the following steps: preparing a comb-shaped associated copolymer PAH containing macromonomers and functional hydrophobic monomers into an aqueous solution having the concentration of 0.1 to 4g/L, the crosslinking agent concentration of 0.01 to 1.0g/L, the surfactant concentration of 0.01 to 8mmol/L and the sodium sulfite thermal stabilizer concentration of 0.005 to 1.0g/L; adding the aqueous solution into a mixing container with a stirring device; stirring the aqueous solution evenly at the room temperature; regulating the pH value of the solution to be equal to between 4 and 11, and obtaining a temperature resistant salt tolerant high efficiency gel polymer solution system used for tertiary oil recovery and scavenge, displacement modification, profile modification or water shutoff. The polymer solution system has micro-crosslinking to form the gel during the flowage inside the oil reservoir. The gel has good elasticity, not easy dehydration, stable gelling performance, and excellent tackification, temperature resistance, salt tolerance, shearing resistance and ageing resistance.

The invention discloses a cold-resistant temperature-resistant flame-retardant surface migration-resistant polrvinyl chloride insulating material. The material comprises the following components in part by weight: 100 parts of polrvinyl chloride (PVC) resin, 5 to 20 parts of cold-resistant plasticizer, 20 to 40 parts of temperature-resistant plasticizer, 6 to 40 parts of polyester polymer plasticizer, 3 to 8 parts of environmentally-friendly heat stabilizer, 20 to 80 parts of filler, 4 to 15 parts of fire retardant, 2 to 8 parts of processing modifier, 0.3 to 1.5 parts of lubricant and 0.1 to 1.2 p[arts of toner. The polrvinyl chloride composite material of the invention has the comprehensive performance, such as low temperature embrittlement resistance, low temperature compact resistance, high temperature aging resistance, fire resistance, surface migration resistance and the like.

The invention belongs to the field of drainage tubes, and particularly relates to a polyethylene-polyvinyl chloride blend-modified tube and a preparation method thereof. The polyethylene-polyvinyl chloride blend-modified tube aims to solve the technical problems of poor shock strength, high sensitivity to temperature, poor ring stiffness, higher cost and short service life in the existing tube. In order to solve the technical problems, the invention provides a polyethylene-polyvinyl chloride blend-modified tube which comprises the following components in parts by weight: 50-150 parts of polyethylene resin, 50-150 parts of polyvinyl chloride resin, 10-30 parts of nano material, 0.5-5 parts of pigment, 2-20 parts of leadless stabilizer, 1-20 parts of processing assistant, 1-5 parts of lubricant, 0.5-5 parts of antioxidant, 0.5-2 parts of photostabilizer, 1-25 parts of solubilizer, 1-15 parts of impact-resistant modifier, 1-15 parts of enhancer and 0.5-10 parts of coupling agent. The polyethylene-polyvinyl chloride blend-modified tube has the advantages of higher ring stiffness, favorable toughness, aging resistance and greatly higher shock strength.

The invention discloses a nanometer silica sol/acrylic ester composite latex and a preparation method thereof. The composite latex is formed by polymerizing acrylic ester monomers with nanometer silica sol and alkylol solvent; emulsion particles in the composite latex are in a nanometer nucleus-shell structure taking silicon dioxide granules as nucleus and acrylic ester multipolymer as shells; and the preparation method adopts a seed emulsion polymerization method or in situ polymerization method. The composite latex has higher tensile-strength and tearing strength and better performances of acid durability, weather resisting property, wearing resistance, ultraviolet aging resistance, anti-pollution resistance, and the like, can be applied to various aspects of inner and outer wall dope, ground and terrace dope, ground coating of specialty sports fields, and the like, is green and environment-friendly, and has wide market foreground.

The invention discloses acrylamide modified polymer micro-crosslinking gel and a preparation method thereof. The preparation method is characterized in that the method comprises the following steps that: acrylamide modified polymer PAE containing functional macro monomer is prepared into an aqueous solution with the concentration between 0.1 and 4g/L, the concentration of crosslinking agent between 0.01 and 1.0g/L, the concentration of surface active agent between 0.01 and 8mmol/L and the concentration of heat stabilizer sodium sulfite between 0.005 and 1.0g/L; the aqueous solution is added in a mixing container with a stirring device and is stirred evenly at room temperature; the pH value of the solution is adjusted between 4 and 11 to prepare a polymer solution system of the acrylamide modified polymer micro-crosslinking gel used for tertiary oil recovery and displacement, oil displacement modification, profile modification or water plugging; and the polymer solution system undergoes micro crosslinking during flowing inside an oil layer to form the gel. The acrylamide modified polymer micro-crosslinking gel has ideal elasticity, difficult dehydration, stable performance and excellent performances on tackifying, temperature resistance, salt resistance, shearing resistance and ageing resistance.

The invention provides a polyurethane resin composition, a preparation method and application thereof. The polyurethane resin composition comprises a component A and a component B, wherein the component A contains polyolein polyatomic alcohol, a plasticizer, an anti-settling agent and other auxiliary agents; the component B is isocyanate or prepolymer of the isocyanate; and the mass ratio of the A to the B is 10:1-1:10. A pouring material containing the resin composition can be used as a patching material for a cement road bed, a boss resin layer and a mortar packing layer of a railway plate-type unballasted track and has the advantages of high water resistance, ageing resistance and low temperature resistance, long service life and capability of being used at a low temperature.

The invention relates to an environment-friendly epoxy intumescent fire-retardant coating and a preparing method thereof, and belongs to the field of functional coatings. The environment-friendly epoxy intumescent fire-retardant coating is prepared from a component A and a component B, wherein the component A uses epoxy resin as a main film forming matter and is added with a reactive diluent, a catalyst, a carbon-forming agent, a foaming agent, fire retardant, auxiliaries and solvent, and the component B is composed of a curing agent, a curing accelerator, pigment filler, auxiliaries, refractory fibers and solvent. In the component A, the ratio of the epoxy resin to the reactive diluent is 1:1-5:1. In the component B, the ratio of the curing agent to the curing accelerator is 1:1-5:1, and the usage quantity of the refractory fibers accounts for 5-50% of the total mass. The environment-friendly epoxy intumescent fire-retardant coating is free of alkylphenol, or halogen compounds, or boron compounds or sulfocompounds. The prepared environment-friendly epoxy intumescent fire-retardant coating is good in acid resistance, alkali resistance, water resistance, ageing resistance and salt mist resistance and is particularly suitable for fire-retardant protection for maritime and severe outdoor environments, the petrochemical industry and places with hydrocarbon fire potential hazards.

The invention discloses a super-high early-strength grouting material for repairing a ballastless track structure of a high speed railway, which is prepared by the following steps of: sequentially adding water, polymer emulsion, a water reducing agent, a rheology accessory agent and an antifoaming agent; adding admixture, cement, an expansion agent, a coagulator and a retarder, and stirring and blending the materials at a high speed. The parts by weight of the ingredients are as follows: 100 parts of superfine cement, 50-150 parts of admixture, 25-50 parts of redispersible emulsion powder, 3-10 parts of polymer emulsion, 5-25 parts of expansion agent, 0.1-1.0 part of carboxylic acid water reducing agent, 0.1-10 parts of coagulator, 0.1-5 parts of retarder, 0.001-0.005 parts of rheology accessory agent, 0.001 part of polyether-siloxane copolymer antifoaming agent and 20-70 parts of water. The material disclosed by the invention has the advantages of low viscosity, super-high early-strength, low cost, fatigue resistance, aging resistance and water erosion resistance, and the like, so that the material can be used for repairing the concrete gaps of ballastless tracks of high speed railways, gaps of cement asphalt mortar filling layers, cracks and damages.

The invention provides a spraying polyurea elastomer applied to a mine, a method for making the same and a construction method. The spraying polyurea elastomer can solve the problem of poor wearing resistance in the prior art. The invention comprises the following technical proposals that: the spraying polyurea elastomer applied to the mine comprises two compositions A and R, wherein, the composition A is a semi-prepolymer synthesized by 45 to 65 portions of polyisocyanate and 35 to 55 portions of polyether polyol; the composition R comprises 55 to 80 portions of amine terminated polyether, 15 to 33 portions of chain extender and 5 to 25 portions of antiwear filler; and the compositions A and R are matched for use according to an isocyanate index of between 0.9 and 1.2. The spraying polyurea elastomer has good physical performance, high wearing resistance, good oil resistance, hydrolization resistance, bacteria resistance and aging resistance and good construction performance and can be used in a vibration sieve equipment lining, a flotation equipment lining, etc. of the mine and other application places which have high requirement on wearing resistance.

The invention discloses a novel nano modified antimicrobial water-based woodware paint which comprises acrylic resin emulsion, polyurethane resin emulsion, nano silica sol, nano aluminum oxide, nano titanium dioxide, nano silver, film-forming assistant, defoaming agent, wetting and dispersing agent, leveling agent, thickening agent, wax emulsion and pH regulator. The nano materials dispersed in the water-based paint enhance the hardness of the coated film, so that the coated film has excellent yellowing resistance, aging resistance and mold resistance.

The invention relates to the technical fields of photoelectricity and chemical industry, in particular to a low-stress epoxy/organic silicon/POSS nano hybrid material, and a preparation method and application thereof. The epoxy/organic silicon/POSS nano hybrid material comprises (a) an epoxy resin, (b) a polyorganosiloxane, (c) a cage-type polysilsesquioxane (POSS), (d) an epoxy hardener, (e) non-essential silane oxycompound and (f) non-essential assistants, wherein the polyorganosiloxane contains epoxy groups and silane oxygen groups. The cured nano hybrid system has excellent reticular cross-linked structure and does not have microphase separation. The epoxy/organic silicon/POSS nano hybrid material has the advantages of high mechanical strength, favorable heat resistance, favorable cohesive property, high chemical stability, favorable ultraviolet aging resistance, favorable optical transparency and other excellent properties, has the functions of low internal stress and pressure buffer, and can be used as an LED packaging material, optical protection material, circuit protection coating material, adhesive paint and the like.

The invention discloses an epoxy resin mortar composite and an application of the composite for a filling material of railway plate type fragment-free track elastic adjusting layer, the epoxy resin mortar composite is composed of A, B and C three parts of materials, wherein part A is composed of the following materials according to parts by weight: 80-100 parts of epoxy resin, 1-10 parts of paint, 0-100 parts of diluent, 0-50 parts of toughening agent, 0-5 parts of ultraviolet absorbent, 0-5 parts of antioxidant, 0-2 parts of antifoaming agent and 0-5 parts of coupling agent; part B is curing agent; part C is filler, and the weight ratio of A, B and C parts is 80-100:5-100:50-600. Detection shows that the epoxy resin mortar composite provided by the invention has, for cement components, excellent adhesion stress, strong wet-heat aging resistance and chemical corrosion resistance and better elasticity and mechanical strength, thereby satisfying requirements of different climatic conditions and different construction conditions.

The invention relates to a thin-wall insulated electric wire material for an automobile and a preparation method of the electric wire material, belonging to the technical field of materials, and solving the problem that cable wires cannot meet long-time ageing resistance, low-temperature resistance, high-temperature resistance, high physical performance, no drop during combustion, good liquid resistance and the like simultaneously in the prior art. The cable material comprises the following ingredients in parts by weight: 100 parts of matrix resin, 30-40 parts of modifier, 40-60 parts of plasticizer, 15-25 parts of filler, 50-60 parts of flame retardant, 5-10 parts of stabilizer, 1-5 parts of wear-resistant agent, and 1-5 parts of auxiliaries, wherein the plasticizer is the mixture of halogenated biphosphate compound FR-V6, dihexyl sebacate and 2,2,4-trimethyl-1,3-pentanediol di-isobutyrate in a weight ratio of (5-10): (3-6): 1. The thin-wall insulated electric wire material for the automobile disclosed by the invention is good in physical performance, resistant to long-time ageing, and low in cost.

The invention relates to a starch-based edible film and a preparation method thereof. The starch-based edible film is a starch-based edible packaging film with favorable flexibility, barrier property, ageing-resistance property and heat sealing property, which is prepared by adopting the preparation method comprising the following steps of: adding a food-grade plasticizer, a lubricating agent, a reinforcing agent, a stabilizing agent and other accessories by taking stably-degraded composite modified starch as a main film-forming raw material, stirring and mixing at high speed, carrying out double-screw extrusion granulation and then carrying out single-screw extrusion casting to obtain the finished product. The invention has the characteristics of low energy consumption and high production efficiency and is suitable for industrial continuous production. The prepared film in the invention has edibility and full degradability, can be widely applied to inner packaging of foods, and avoids non-degradable food packages from polluting the environment.

The invention discloses a preparation method of nano-silicon-dioxide-modified water-based polyurethane. The method comprises the following steps: (1) preparing a water-based polyurethane prepolymer by a conventional process; (2) silane-coupling-agent-modified nano silica sol: diluting nano silica sol with a small amount of isopropanol, mixing with a silane coupling agent, and stirring to react at normal temperature for 30 minutes, thereby obtaining the silane-coupling-agent-modified nano silica sol; and (3) adding the water-based polyurethane prepolymer obtained in the step (1) into the silane-coupling-agent-modified nano silica sol obtained in the step (2), adding deionized water and a small-molecule amine chain extender, carrying out high-speed shear emulsification and dispersion at normal temperature for 15-30 minutes, and carrying out reduced pressure distillation to remove the solvent, thereby obtaining the nano-silicon-dioxide-modified water-based polyurethane. The film formed by the resin prepared by the method has excellent hardness, adhesion, impact resistance, water resistance, aging resistance, solvent scrubbing resistance, acid resistance, saline water resistance, wear resistance and the like.

The invention relates to a high-tenacity heat-resisting ageing-resisting chlorinated polyvinyl chloride alloy material which comprises the following raw materials in weight parts: 100 parts of chlorinated polyvinyl chloride, 1-50 parts of impact modifier, 1.5-10 parts of thermal stabilizer, 0.1-10 parts of lubricant, 0.5-15 parts of PVC processing aid, 0.1-0.5 part of antioxidant and 0-40 parts of filler. The invention solves the problems of low heat resistance and aging resistance while improving the tenacity of CPVC in the prior art; and the Vicat softening point can vary within the range of 104 to 119 DEG C, the tensile strength can reach 45-64 MPa, and the notch impact strength can be increased by more than 200 percent.

The invention belongs to the technical field of polymer preparation, and especially relates to a preparation method of a thermoplastic polyurethane elastomer. The method comprises the following steps: 1, putting 1,4-cyclohexyl diisocyanate, polyethylene glycol adipate, 1,4-butylene glycol, a lubricant and a hydrolysis resistance agent in a blender, fully stirring, and fully plastifying in a high-temperature plastifying machine or a high-temperature internal mixer to obtain a thermoplastic polyurethane elastomer matrix; 2, processing an inorganic nanofiller by a silane coupling agent to obtain an modified inorganic nanofiller; and 3, dissolving the thermoplastic polyurethane elastomer matrix in tetrahydrofuran, adding the modified inorganic nanofiller, mechanically stirring, removing tetrahydrofuran, and carrying out film forming to obtain the thermoplastic polyurethane elastomer. Compared with the prior art, the method provided by the invention can effectively increase the heat resistance, the mechanical performances and the ageing resistance of the polyurethane elastomer on the premise that the comprehensive performances of the thermoplastic polyurethane elastomer do not decrease.

The invention discloses an EVA (Ethylene Vinyl-Acetate) packaging glue film with high gas-water barrier property and a preparation method thereof. The glue film is prepared from the following raw materials in parts by weight: 100 parts of an EVA copolymer, 0.5-5 parts of a crosslinking agent, 0.1-0.5 part of an antioxidant, 0.1-0.5 part of an ultraviolet absorber, 0.05-0.5 part of a light stabilizer, 0.1-3 parts of a silane coupling agent and 0.01-55 parts of a water resistant. The preparation method comprises the following steps: plastifying and extruding; stretching; drawing; rolling and the like. The glue film disclosed by the invention has the beneficial effects that the EVA glue film obtained by the invention has good gas-water barrier property and hydrolysis resistance as well as better damp-heat aging resistance.

The invention relates to a high-elasticity waterborne polyurethane-acrylate composite resin which is prepared mainly from the following raw materials: 7 to 20 parts by mass of aliphatic polyisocyanates with highly symmetrical structure, 25 to 45 parts by mass of polyether polyol, 0 to 0.03 parts by mass of polyurethane catalyst, 0 to 2 parts by mass of low molecular weight alcohol chain extender, 1 to 6 parts by mass of hydrophilic chain extender, 0.4 to 1.5 parts by mass of low molecular weight amine chain extender, 1 to 4 parts by mass of organic amine neutralizer, 20 to 60 parts by mass of (methyl) acrylate monomer and 0.08 to 1.3 parts by mass of free radical initiator. The high-elasticity waterborne polyurethane-acrylate composite resin disclosed by the invention has good mechanical property at different using temperatures. A coating prepared from the high-elasticity waterborne polyurethane-acrylate composite resin not only has excellent mechanical property, but also has excellent water resistance, alkali resistance, stain resistance and ageing resistance, so the high-elasticity waterborne polyurethane-acrylate composite resin is very suitable for preparing the single-component elastic coating in the field of buildings.

The invention discloses a thermoplastic low-smoke halogen-free flame-retardant environment-friendly sheath material for power cables and a preparation method thereof. The thermoplastic low-smoke halogen-free flame-retardant environment-friendly sheath material for power cables comprises the following components in parts by weight: 60-80 parts of EVA (ethylene-vinyl acetate), 20-30 parts of HDPE (high-density polyethylene), 10-15 parts of EPDM (ethylene-propylene-diene monomer), 15-25 parts of compatiblizing agent, 100-150 parts of halogen-free flame retardant, 0.5-1 part of antioxidant 1035, 0.5-1 part of antioxidant DSTP, 1-2 parts of ethylene bis stearamide, 3-5 parts of DCP (dicumyl peroxide), 2-4 parts of zinc oxide, 1-2 parts of calcium stearate, 10-20 parts of dimethyl methyl phosphonate, 30-40 parts of nano kaolin, 2-3 parts of stearic acid and 0.5-1 part of isopropyl tri(dioctylpyrophosphate)titanate. The sheath material disclosed by the invention has the advantages of excellent physical and mechanical properties, excellent flame retardancy, favorable high/low temperature resistance, favorable oil resistance, favorable solvent resistance, favorable wear resistance, favorable ozone resistance, favorable aging resistance, high flexibility, crack resistance and the like, is very durable, environment-friendly and pollution-free, and can completely satisfy the requirements for modern power cables.

The invention belongs to the technical field of modification and processing of high-molecular materials, and relates to a polypropylene composite material and a preparation method and an application thereof. The polypropylene composite material is prepared from the following components in parts by weight: 100 parts of polypropylene, 20-60 parts of reinforced fibers, 8-20 parts of polar additives, 10-35 parts of toughening agents, 1.5-3.5 parts of antiaging agents, 1.2-4.4 parts of compatilizer, 5-12 parts of inorganic composite fire retardants, 1.5-6.6 parts of smell inhibitors and 0.3-0.8 part of processing auxiliary agents. Compared with the prior art, the prepared polypropylene composite material is high in surface tension, achieves good bonding property with other materials, has the advantages of good rigidity without being lacked of toughness, good heat resistance, ageing resistance and fire retardance, little smell and excellent forming processing property and can be widely used as a special material for inner and outer ornaments of various types of automobiles.

The invention discloses a nonionic aqueous polyurethane emulsion and a preparation method thereof, belonging to the technical field of high-molecular materials. The nonionic aqueous polyurethane emulsion comprises polyether polyol or polyester polyol, isocyanate, micromolecular chain extender, nonionic hydrophilic chain extender, hydrophilic chain extender, 0.6-1 weight portions of cross-linking agent, lower boiling point solvent, catalyst, amine neutralizer, amine chain extender, 0.4-2 weight portions of aqueous wetting agent, and aqueous levelling agent. The preparation method is characterized in that: prepolymerization, polymerization, emulsification, distillation, compounding are carried out to prepare the nonionic aqueous polyurethane emulsion, then the aqueous wetting agent and aqueous levelling agent are added with stirring to obtain an aqueous nonionic polyurethane glass fibre impregnating compound. The prepared nonionic aqueous polyurethane emulsion disclosed herein has the advantages of good stability, long stable phase, wide application scope, high strength, wear resistance, good elasticity, yellow stain resistance, aging resistance, solvent resistance, low temperature resistance, tortuosity resistance, good penetration, compatibility, good interface chemical combination or chemisorption and other excellent performances.

The invention discloses a nano modified water-base multifunctional sound-absorbing paint and a preparation method thereof. The paint is composed of the following components in parts by weight: 28-38 parts of emulsion, 2-10 parts of pigment, 30-45 parts of filler, 15-25 parts of water, 4-8 parts of flame retardant and 2.25-5.43 parts of assistant. By optimizing the paint system structure, the polymer and filler are selected, modified and proportioned to ensure the basic mechanical properties and sound-absorbing function, and the paint has high-value service properties, such as thermal insulation, moisture resistance, fire resistance, aging resistance, fouling resistance, sterilization, air purification and the like, and is especially suitable for rooms and other occasions with higher environmental requirements.

The invention discloses a corona aging acceleration device and a corona aging acceleration method for a polymer insulating material. The device comprises a sealed corona aging experimental case in which a pin array electrode and a metal plate electrode are arranged, wherein the pin array electrode is connected with a high voltage generation device; the metal plate electrode is grounded; a pinpoint array is arranged on the pin array electrode; a test sample is arranged on the metal plate electrode, and is opposite to the pinpoint array; and after voltage is applied, uniform corona discharge is generated between the pin array electrode and the metal plate electrode to perform corona aging on the test sample. The device and the method have the advantages of low requirements on experimental conditions, convenience for operation and quantitative control over aging factors in an experiment, and short experimental period, and are applied to researches on the corona aging resistance of insulating materials in a laboratory.

The invention discloses a water-based capillary crystalline type waterproof material with the controllable reaction speed as well as a preparation method and an application of the waterproof material. The waterproof material is mainly prepared from raw materials in parts by weight as follows: 30-40 parts of sodium silicate, 0.05-0.15 parts of a surfactant, 0-1 part of a reaction retarder, 0.1-0.2 parts of a reducing agent, 0-5 parts of a reaction accelerant, 0.06-0.1 parts of an anti-freezing agent, 0.1-0.3 parts of a metal ion blocking agent, 0.4-0.8 parts of a surface enhancer, 0.2-0.4 parts of an antirust agent and 53-69 parts of deionized water. The waterproof material has properties of lasting water resistance, durability, aging resistance, good permeability resistance, cracking resistance, high seepage capacity and the like and can reach the optimal waterproof effect for concrete under different porosity conditions; besides, the preparation method is simple, low in cost, pollution-free and convenient to conduct in concrete waterproof application.

The invention belongs to the field of powder paints and particularly relates to a self-cleaning super-weather-proof powder paint. The self-cleaning super-weather-proof powder paint comprises a carboxyl-terminated polyester particle system and a fluorocarbon resin particle system in a weight part ratio of 4:1-1:4, wherein the fluorocarbon resin particle system contains TiO2 nano-particles. As carboxyl-terminated polyester is introduced into a pure fluorocarbon paint, the phase separation occurs in a solidification process, and the fluorocarbon resin floats up to the surface of a coating to serve as coating protection and ageing resistance; the carboxyl-terminated polyester and the like and a substrate can be well wetted, so that the coating and the substrate can be well adhered and can hardly crack and spall; as the TiO2 nano-particles only exist in a fluorocarbon phase, the resin on a bottom layer cannot be broken, and the excellent stability of the system is guaranteed; and the TiO2 nano-particles are scattered in a dry blending manner, and the complex preprocessing is avoided, so that the preprocessing process can be greatly shortened, the cost is lowered, and the efficiency is improved.

The invention discloses an organ silicon material for encapsulating a power-type LED and a synthetic method thereof. The organ silicon material is mixed with a component A and a component B according to a mass ratio of 1:1 to 1:20, wherein the component A is a mixture of vinyl silicon polymer and a solidify catalyst, and the vinyl silicon polymer comprises vinyl silicon resin and polysiloxane with vinyl; and the component B comprises vinyl hydro silicon resin, poly hydro siloxane and an inhibitor. The organ silicon material has a higher refractive index, high transparency, excellent ultraviolet ageing resistance, good heat ageing resistance, and the like and is an ideal encapsulating material of the power type LED. The invention also discloses a synthetic method of an organ silicon material for encapsulating the power-type LED, the solidification of resin is more complete, and the light transmission and the hardness of the cross-link resin are effectively increased.

The invention discloses a PVC material and a preparation method thereof. The PVC material comprises the following substances according to parts by weight: 100 parts of PVC, 2-8 parts of stabilizer, 2-6 parts of processing agent, 1.5-2.5 parts of lubricants, 4-12 parts of filler, and 0.05-1 part of colorant. Compared with the prior art, the invention adopts food sanitation-level or nontoxic raw materials; the mobility of the manufactured material is good, and the molding temperature and molding pressure of tubular products and pipe fittings can be reduced, thus preventing the PVC material from pyrolyzing. The PVC-U water supply tubular products, pipe fittings and pressure-proof ball valves made from the material have good acid and alkali resistance, inoxidability and ageing resistance, and the pressure resistance of the pressure-proof ball valve is more than or equal to 2.5MPa (the pressure resistance of similar products is only more than 1.6MPa), thus fully meeting food and chemical use requirements.

The invention discloses a thermoplastic elastomer composition which is plasticated by the following main components by weight: 100 parts of polyurethane thermoplastic elastomers, 30-150 parts of polyvinyl chloride thermoplastic elastomers, 25-50 parts of styrene elastomers, 0-30 parts of blend and 4-8 parts of auxiliaries, wherein the auxiliary is any one or more of a composite rare-earth stabilizer, zinc stearate, calcium stearate, stearic acid or polyethylene wax; and the blend is butyronitrile N18. The invention selects the thermoplastic elastomers with similar polarity and complementary properties to be synthesized and used and selects compatilizers to organically combine several best molecules with different structures, so that the generated novel thermoplastic elastomer has superior performance and appropriate price, can meet the requirements of market products and has wide application range because the product has the technical advantages of excellent oil resistance, resistance to low temperature of minus 35 DEG C, acid-alkali resistance, aging resistance and lower proportion than the vulcanized products with the same price.