1690results about How to "Good high and low temperature resistance" patented technology

The invention relates to porcelain glaze and in particular relates to high and low-temperature resistant porcelain glaze for enamel. According to the technical scheme, the highnd low-temperature resistant porcelain glaze for enamel is prepared from the following raw materials in parts by weight: 22-38 parts of sodium silicate with the modulus of 2-3.8, 11-19 parts of aluminum oxide, 10-20 parts of manganese dioxide, 6-9 parts of palladium oxide, 6-9 parts of high-boron calcium borate, 23-29 parts of lead sulfate, 2-4 parts of talc, 7-13 parts of calcium carbonate, 8-12 parts of barium sulfate, 12-19 parts of zinc sulfate and 2-9 parts of titanium oxide. The high and low-temperature resistant porcelain glaze has excellent ultralow-temperature resistance and high-temperature resistance.

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 discloses a valve sealing gasket sizing material, which is prepared from the following raw materials in parts by weight: 20-30 parts of fluorosilicone rubber, 50-60 parts of hydrogenated nitrile-butadiene rubber, 15-25 parts of chlorosulfonated polyethylene rubber TS-320 (TOSOH, Japan), 2-3 parts of gamma-methacryloxypropyltrimethoxysilane, 1-2 parts of diphenyl silandiol, 14-16 parts of modified tree ash, 2-3 parts of ferrocene, 0.2-0.6 part of dicumyl peroxide (DCP), 20-30 parts of high-abrasion resistant carbon black N330, 20-25 parts of precipitated white carbon black, 5-7 parts of light calcium carbonate, 2-4 parts of zinc oxide, 1-3 parts of calcium stearate, 1-3 parts of aluminium oxide, 5-8 parts of dolomite, 13-15 parts of modified iron tailing powder, 0.1-0.3 part of accelerating agent MBTS, 1-2 parts of sulphur, 1-2 parts of anti-aging agent RD, 1-2 parts of anti-aging agent MB, 1-2 parts of benzimidazole-2-thiol, 1-3 parts of methyltrimethoxy silane, and 2-3 parts of paraffin. The sizing material of the rubber has excellent high and low temperature-resistant, oil-proof, solvent-resistant and chemical-resistant performance, and at the same time is good in mechanical property and low in cost.

The invention belongs to the technical field of materials, and relates to a wave-transmitting core clamping material and a manufacturing method and application thereof. The wave-transmitting core clamping material comprises an upper skin layer, a core layer and a lower skin layer, wherein the upper skin layer and the lower skin layer are bonded on the two sides of the core layer, respectively; the upper skin layer and the lower skin layer are made of a fiber-reinforced thermoplastic composite material or a laminated material of the fiber-reinforced thermoplastic composite material and a transition material. The prepared wave-transmitting core clamping material provided by the invention has the characteristics that the quality is light, the intensity is high, the wave-transmitting property is good, the adaptive temperature range is wide, and the core clamping material is manufactured to be in different shapes through different manners of hot pressing, vacuum forming and the like so as to meet the requirement on the shape of an antenna cover.

The invention relates to water-based polyurethane adhesive with high adhesive property and a preparation method thereof, and belongs to the field of polyurethane adhesive. The preparation method comprises the following steps: (1) drying a polylol polymer for 1 to 3 hours in vacuum at a temperature of between 100 and 120 DEG C, reducing the temperature to between 80 and 90 DEG C, dripping diisocyanate into the polylol polymer, polymerizing the mixture for 1 to 1.5 hours, adding small molecular polylol and hydrophilic polylol into the mixture to carry out chain extension and polymerization reaction for 1 to 1.5 hours, then adding the diisocyanate into the mixture, and making the mixture subjected to end capping reaction for 0.5 to 1 hour; (2) dripping neutralizing agent into cross linking polyurethane pre-polymer, and adding acetone into the pre-polymer at the same time to reduce viscosity, wherein the neutralization degree is 95 to 100 percent after the mixture is reacted for 0.5 to 1 hour at a temperature of between 35 and 45 DEG C; (3) dripping the obtained hydrophilic cross linking polyurethane pre-polymer into a mixture of a polyamine compound and water, and dispersing the mixture evenly under high-speed shearing function of an emulsifying machine to obtain water-based polyurethane dispersant; and (4) removing organic solvent in the water-based polyurethane dispersant obtained in step (3) by a vacuum decompressing method. The preparation method effectively solves the problem of difficult emulsifying dispersion caused by cross linking, has simple emulsifying process, and reduces equipment requirement remarkably, has high solid content, reduces cost for production, storage and transportation, improves drying time, and is convenient for gluing operating process.

The invention discloses a synthesis method for waterborne organocilicon-polyurethane block copolymer, comprising steps as follows: reaction is carried out between polyisocyanate and polyol (the polyol comprises the one from the castor oil and carboxyl polyol) to generate isocyanate-terminated polyurethane prepolymer; then chain extension is carried out via amino alkyl polysiloxane; eventually alkaline aqueous solution is adopted for neutralization and dispersion, to prepare aqueous dispersion with excellent dispersion and stability. In addition, the aqueous dispersion is applied as coating for the wood and paper, as finishing agent for leathers and textiles, or as adhesives. Since natural vegetable oil from castor beans is selected and amino alkyl polysiloxane is adopted as the chain extender. The synthesis method for waterborne organocilicon-polyurethane block copolymer has the advantages of remarkably improved hydrophobic property, heat resistance and surface smoothness for the polymer films, simple preparation technique, and easy operation.

The invention provides a graphene anticorrosive coating and a preparation method thereof. The graphene anticorrosive coating is prepared from a component A and a component B, wherein in percentage by weight, the component A comprises 20%-30% of epoxy resin, 1%-3% of graphene, 0.5%-2% of a dispersing agent, 15%-25% of talcum powder, 10%-20% of zinc powder and 1%-5% of aluminum paste, and the component B comprises 30%-50% of cashew nut shell oil phenolic amide and 10%-30% of polyamide. The graphene anticorrosive coating provided by the invention is safe and environment-friendly, is moderate in cost, simple and convenient in process, stable in storage, excellent in adhesive force on base materials such as steel, iron and the like, excellent in mechanical performance such as flexibility, wear resistance performance and the like, and prominent in protective effects in chemical media such as an acid, an alkali, a salt and the like, shows excellent protective performance such as high and low temperature resistance, high salinity resistance and the like in a condition of a simulation marine environment experiment, and can be applied as primer for an anticorrosive coating in ocean engineering with various steel and iron materials.

The invention discloses a double-component organic silicon polyurethane elastomer. The double-component organic silicon polyurethane elastomer consists of a component A and a component B, wherein the mass ratio of isothiocyano in the component A to hydroxyl in the component B is 1:(1.05-1.2); the component A is prepared by reacting the following raw materials in part by mass: 10 to 30 parts of polyisocyanate, 30 to 80 parts of polyalcohol, 0.1 to 10 parts of active hydrogen-containing siloxane and 0 to 10 parts of plasticizing agent; and the component B consists of the following raw materialsin part by mass: 10 to 50 parts of polyalcohol, 1 to 10 parts of reinforcing agent, 20 to 60 parts of inorganic filler, 3 to 10 parts of pigment, 0.1 to 10 parts of aid and 5 to 20 parts of plasticizing agent. The double-component organic silicon polyurethane elastomer has high elasticity, hardness, solvent resistance, wear resistance, flexure resistance, high and low temperature resistance, ultraviolet resistance and oxidative degradation resistance, low surface energy and high hydrophobicity, and can meet the long-term using requirement of the sport field.

The invention discloses composite modified asphalt, which is prepared by mixing modifier and matrix asphalt, wherein the modifier consists of the following components in percentage by mass (based on 100 percent of the matrix asphalt): 1 to 10 percent of inorganic substance filler, 1 to 10 percent of polymer, 0.1 to 5 percent of stabilizer, and 0.1 to 5 percent of coupling agent. The prepared modified asphalt has good high and low temperature resistance and ageing resistance, can prolong the service life of roads and reduce the maintenance expense of pavements, and is suitable to be spread in the engineering of high-grade roads, airfield runways, parking lots, bridges and the like.

The invention aims to provide a water-based dispersoid solid lubricant material and the preparation method thereof; wherein, the water-based dispersoid solid lubrication material can be used as solid lubrication material, has good filming and adhesive properties, anticorrosion and wear resistance, and adopts polyamide imide and PTFE as main adhesive material; the water-based solid lubricant is environmental protection, anticorrosive and wear resistant, has low friction coefficient and good high and low temperature resistance, overcomes the problems that the organic solvent of solid lubrication material in prior art has greater toxicity, easy volatilization and is not wear resistant so that the water-based solid lubricant has good application prospect.

The invention provides a nanometer strengthening fluoride silicone rubber long-acting anti fouling and flashing coating material (nano PRTV coating material) which is used on an external insulation layer of a power system high pressure transmission and transformation device. The coating is composed of the following compositions (weight portion) of 20-40 percent of hydroxyl-fluoride containing polysiloxane, 2-5 percent of small molecular siloxane, 1-6 percent of cross linker, 0.02-1 percent of catalyst, 2-6 percent of nano silicon dioxide, 4-6 percent of decabromodiphenyl ethane, 1-2 percent of pigment and 30-50 percent of solvent. The coating provided by the invention is provided with perfect flame retardancy, solvent resistance, oil resistance, high and low temperature resistance and good self-cleaning performance. The surface of the coating material is smoother than dirt flash preventing coating material. Compared with the dirt flash preventing coating material, the coating material of the invention is greatly improved in aspects of hydrophobic migration speed, proportionality, sustainability, etc. Once filming can be realized. With the service life of more than 20 years, the coating material can be used permanently.

The invention provides a high-performance aqueous asphalt-based epoxy resin waterproof material composition and a preparation process thereof. The composition comprises 45 to 55% of emulsified asphalt, 25 to 35% of cationic SBR latex, 10 to 20% of epoxy resin emulsion, 2 to 8% of epoxy resin curing agent emulsion and 0.05 to 0.15% of an antifoaming agent. A waterproof material provided in the invention has the following advantages: (1) the waterproof material has excellent resistance to high and low temperature and excellent toughness, and the material does not flow at a high temperature more than 140 DEG C, is not crisp at a low temperature of -20 DEG C and has great adhesion stress; (2) the waterproof material is environment friendly, the preparation process is simple, and a system is stable; (3) construction performance is good, and surface film formation is fast.

The invention discloses a nano-wollastonite powder modified ethylene propylene diene copolymer cable material, which is prepared FROM the following raw materials in parts by weight: 100-120 parts of Lanxess Deutschland ethylene propylene diene copolymer 3950, 20-30 parts of butyl rubber BBK232, 10-15 parts of SG-3 PVC (polyvinyl chloride) resin, 10-15 parts of trioctyl trimellitate, 2-5 parts of propanediol sebacate polyester, 2-5 parts of epoxidized soybean oil, 5-10 parts of polyethylene wax, 0.2-0.5 part of bisphenol A, 1-2 parts of zinc stearate, 0.5-1 part of lead sulfate tribasic, 1-2 parts of sulphur, 3-5 parts of zinc oxide, 30-40 parts of wollastonite powder, and the like. The cable material not only has excellent flame retardance and incombustibility, but also has the advantages of good high and low temperature resistance, corrosion resistance, water resistance, wear resistance, ozone resistance, ageing resistance and the like at the same time, and is durable in use.

The invention provides a preparation method of a self-adhesion silicon rubber foam material. The method comprises the following steps: mixing silicon rubber, a foaming agent, a vulcanizing agent, a reinforcing agent and micromolecular silicon oil as raw materials, milling and sheeting, and performing heat treatment foaming to obtain the self-adhesion silicon rubber foam material. Compared with an existing preparation method, the method has the characteristics that the used raw materials have few varieties and are simple and easy to prepare, low in cost and free of environmental pollution; moreover, by adopting the heat treatment foaming technology, the prepared silicon rubber material is a foam material for foaming, which is high in foaming efficiency, light in weight, excellent in heat insulation property, high and low-temperature resistance, chemical stability and physiological inertia and good in self-adhesion performance, and the force of adhesion between the foam material and an aluminum plate is 10-25N/mm.