41results about How to "Reduce thermal decomposition rate" patented technology

The invention discloses a high-performance environment-friendly aluminum alloy mould release agent which consists of modified organic silicone, grease synthetic ester, anti-rust inhibitor, preservative, surfactant and water. The high-performance environment-friendly aluminum alloy mould release agent adopts the special modified organic silicone and the grease as the composite lubricating mould release agent and is further provided with a variety of the anti-rust inhibitor, the preservative and the surfactant, and the product has excellent heat resistance performance and can greatly improve the high-temperature stability and the high-temperature mould release performance of the product and greatly reduce the occurrence of air holes.

The invention discloses easily collapsed coated sand. The sand comprises crude sand, a bonding agent, a curing agent, a collapsing agent and a lubricant, wherein the using amount of the curing agent is 50 to 60 percent of that of the bonding agent; the using amount of the collapsing agent is 30 to 40 percent of that of the bonding agent; the using amount of the bonding agent is 6 to 12 percent ofthe crude sand; the using amount of the lubricant is 2 to 4 percent of the crude sand; the collapsing agent comprises the following components in part by weight: 50 to 60 percent of sodium nitrate, 30 to 40 parts of sodium chloride and 5 to 15 parts of ferric oxide powder; and the bonding agent comprises the following components in part by weight: 60 to 70 parts of phenolic resin, 20 to 30 parts of polyalkylene oxide resin and 5 to 15 parts of poly(ethyl acrylate). The easily collapsed coated sand has the advantages of relatively high thermal disintegration rate, relatively good collapsibility, difficult breaking of a sand core and simple dropping of the sand core.

The invention discloses an antimony-free flame-retardant hot-melt adhesive film for FFCs and a preparation method thereof. The hot-melt adhesive film comprises a PET insulating layer, a pre-coating layer and an adhesive layer, wherein the pre-coating layer is disposed between the PET insulating layer and the adhesive layer, and the thickness of the adhesive layer is smaller than the thickness of the PET insulating layer; the adhesive layer comprises, by weight percentage, 25-35% of a saturated polyester resin A, 5-10% of a saturated polyester resin B, 5-10% of a saturated polyester resin C, 28-36% of a flame retardant a, 6-12% of a flame retardant b, 0.5-1% of a curing agent and 12.5-14% of a balance material; the saturated polyester resin C is a DOPO phosphorus-containing modified flame-retardant saturated polyester resin, and the flame retardant a and the flame retardant b are both an antimony-free flame retardant. The antimony-free flame retardant is more environmentally friendly and can achieve the flame-retardant effect of VW-1.

The invention relates to a preparation method of a boron-modified phenolic aerogel. The method comprises the following steps of: dissolving linear phenolic resin, tributyl borate and other organic boric acids in an ethanol solution, adding a cross-linking agent hexamethylenetetramine, carrying out an initial low-viscosity sol-gel process to obtain a boron composite phenolic wet gel, and carrying out normal-pressure drying to obtain the boron modified phenolic aerogel. And tributyl borate and other organic boron sources can be uniformly mixed in the solution, so that the viscosity of the systemis unchanged or slowly rises, thereby effectively ensuring the stability of the glue injection process. In addition, boron particles form boron oxide in the ablation application process, and the boron oxide permeates into gaps of the phenolic aerogel to fill the gaps of the phenolic aerogel and melt and coat a phenolic matrix. The prepared boron-modified phenolic aerogel has the advantages of good specific surface area, oxidation resistance, low heat conductivity coefficient and density, good processability and the like, can maintain the original shape and performance at high temperature, andis expected to be applied to the field of external thermal protection of high-speed aircrafts.

The invention discloses a self-polymerized consolidated pressure-resistant permeation-increasing temperature-resistant sand preventing agent. The self-polymerized consolidated pressure-resistant permeation-increasing temperature-resistant sand preventing agent comprises the following components, in percentage by mass: 30-40% of a resin compounding system; 40-50% of an organic solvent; 5-7% of a coupling agent; 5-8% of a filler; 4 to 5% of a curing agent, and 5 to 8% of an emulsifier; wherein the sum of the mass percentages of the components is 100%; the curing agent is p-nitrobenzoic anhydrideand tetrachlorophthalic anhydride which are mixed in equal mass; the filler is high-temperature-resistant multi-mineral fine powder and phenolic fiber; and the high-temperature-resistant multi-mineral fine powder is a mixture of magnesium oxide, aluminum oxide and silicon oxide; the resin compounding system is formed by compounding epoxy resin E-44, epoxy resin E-51, phenolic resin F-51 and polyvinylpyrrolidone K30. The sand preventing agent is mainly used for chemical sand control of high-temperature and high-pressure wells, can be injected into stratums without moving tubular columns, andachieve the purposes of sand control and sand consolidation.

The invention discloses an antiflaming polylactic acid composite material prepared by RDP (resorcinol diphenyl phosphate) coated nano attapulgite. The RDP coated nano attapulgite is prepared from RDP and nano attapulgite which are taken as raw materials under an ultrasonic condition. The antiflaming polylactic acid composite material is prepared by virtue of the following steps: mixing the polylactic acid and RDP coated nano attapulgite at a mass ratio of (60-95):(40-5) at a high speed, extruding by use of an extruder, cooling and prilling. The antiflaming polylactic acid composite material has a simple formula, is remarkably improved in mechanical property, has good antiflaming efficiency and good heat stability, can form a stable and compact carbon layer in burning, has no molten drops, and generates less smoke.

The invention discloses an anti-static cable sheath material. The anti-static cable sheath material is composed of, by weight, 2-4 parts of erucyl amide, 570-600 parts of polyvinyl chloride, 17-20 parts of fulvic acid, 0.06-0.1 part of sodium iodide, 40-50 parts of isopropyl alcohol, 70-100 parts of saponite, 2-3 parts of sp80, 20-30 parts of lactide, 0.2-0.25 part of L-arginine, 4-6 parts of polyving akohol, 1.6-2 parts of salicylanilide, 3-5 parts of sodium potassium silicate, 2-4 parts of 3-phenoxy-1-propanol, 10-18 parts of cresyl diphenyl phosphate and 2-4 parts of calcium palmitate. According to the cable sheath material, the components such as the erucyl amide and the salicylanilide are added, good anti-static property is achieved, the anti-static cable sheath material is suitable for protection of wires of electronic products such as household appliances and instruments, and the safety is high.

The invention provides a low-shrinkage composite PE laminating material and a preparation method thereof, and relates to the technical field, and the low-shrinkage composite PE laminating material isprepared from the following raw materials: low density polyethylene, modified polylactic acid, poly(1, 2-propylene glycol adipate), modified nano cellulose, polyacrylamide and an antioxidant. The low-shrinkage composite PE laminating material disclosed by the invention has relatively high tensile strength, elongation at break and tearing strength. Compared with the prior art, the non-toxic biomassdegradable material has high heat stability and barrier property, has a wide application prospect, repeatedly screens the dosage of each raw material, enables the raw materials to be suitable for melt strength and melt flowability required by casting film formation, and also improves the adhesiveness of a coating film and substrate paper. The raw materials have the advantages of the high boilingpoint, low volatility, good environmental sanitation, high viscosity, no toxicity and biodegradability.

The invention belongs to the technical field of high-molecular material modification, and provides a microcapsule mildew-proof additive, a composite material and an electric-control element housing. The microcapsule mildew-proof additive is prepared from the following components: a core and a coating layer, wherein the core is an organic mildew-proof agent which comprises a triazole bactericide; at least one coating layer coats outside the core; and the coating layer at the outermost layer is direct-chain alkylbenzene. The microcapsule mildew-proof additive mainly solves the three technical problems: necessary adding amount of the mildew-proof agent is too great; the mildew-proof agent has relatively poor dispersion in a plastic product; and in an injection moulding process, the mildew-proof agent is easily decomposed after being over-heated. The microcapsule mildew-proof additive has the main beneficial effects that the adding amount of the mildew-proof agent is small, the sterilizingeffect is good, sterilizing lasting time is long, and humidity of the using environment is higher.

The invention discloses a silicon rubber composite cable material and a preparation method thereof. The cable material comprises silicon rubber, ethylene propylene rubber, butadiene rubber, polyarylacetylene resin, stearic acid, zinc oxide, sulfur, 2, 4-dichlorobenzoyl peroxide, coupling agents, graphite, accelerants, anti-aging agents, modified fire retardants, 1, 4-cyclohexanedimethanol diglycidyl ether, carbon fibers, white mica and melamine polyphosphate. The modified fire retardants are prepared according to the process including the steps: gelatinizing starch; adding the starch into water; adding nano-sized magnesium oxide, zirconium oxide, iron oxide and carbon nano-tubes; performing ultrasonic treatment, drying, carbonization, crushing and sieving. The preparation method of the silicon rubber composite cable material is simple in process, and the prepared silicon rubber composite cable material is good in heat resistance and aging resistance and excellent in fire resistance.

The invention discloses a low-smoke stable cable material. The material comprises, by weight, 3-4 parts of methyl tin mercaptide, 1-2 parts of solydimethyl siloxane, 4-7 parts of polyethyleneimine, 6-9 parts of ethylparaben, 570-600 parts of polyvinyl chloride, 17-20 parts of fulvic acid, 3-5 parts of calcium hydrophosphate, 0.06-0.1 part of sodium iodide, 80-100 parts of isopropanol, 70-100 parts of soapstone, 2-3 parts of sp80, 0.8-2 parts of epoxy chloropropane, 20-30 parts of lactide, 0.2-0.25 part of L-arginine, 1-2 parts of sodium mercaptobenzothiazole, 3-4 parts of lanolin, 1-2 parts of polyoxyethylene castor oil and 3-5 parts of chlorinated paraffin. According to the cable sheath material, the polyvinyl chloride modified by the methyl tin mercaptide is adopted so that the stability of a finished product can be well improved. The finished material is good in high and low temperature resistance, high in flame redardance and high in safety, and can effectively reduce fire risks.

The invention discloses a cable material for an submersible pump. The cable material is prepared from the following raw materials in parts by weight: 10-17 parts of nitrile rubber, 570-600 parts of polyvinyl chloride, 17-20 parts of fulvic acid, 0.06-0.1 part of sodium iodide, 40-50 parts of isopropanol, 70-100 parts of soapstones, 2-3 parts of sp80, 20-30 parts of lactide, 0.2-0.25 part of L-arginine, 10-13 parts of coumarone, 2-4 parts of aluminium triphosphate, 0.4-1 part of diethanol amine, 0.1-0.2 part of ethylene thiourea, 2-4 parts of borax and 4-6 parts of triglycidyl isocyanurate. The cable sheath material disclosed by the invention can be suitable for severe environments such as high temperatures, high pressures, oil-gas corrosion and the like in an oil well, and is long in service life.

The invention discloses an anti-corrosion and anti-aging cable material. The cable material comprises, by weight, 3-6 parts of polyvinyl alcohol, 1-2 parts of sodium diacetate, 3-4 parts of calcium propionate, 2-4 parts of 2,6-ditertbutyl-4 methylphenol, 10-14 parts of benzotriazole, 570-600 parts of polyvinyl chloride, 17-20 parts of fulvic acid, 0.06-0.1 part of sodium iodide, 40-50 parts of isopropanol, 70-100 parts of saponite, 2-3 parts of sp802, 20-30 parts of lactide, 0.2-0.25 part of L-arginine and 14-20 parts of butyl benzyl phthalate. The added sodium diacetate and calcium propionate of the cable material have excellent anti-microbial and anti-corrosion performance, and therefore the cable material is applicable to humid and dark working environments and other poor working environments and is long in service life.

A dynamic complex rectifying process for the thermosensitive material features that a wet-type dry still is used for direct contact heating, its rectifying apparatus is composed of rectifying tower, condenser, reflux tank, heat exchanger, circulating pump and phase separator. Said thermosensitive material is rectified forward and backward. Its advantages are short rectifying time and high output rate of product.

The invention discloses a method for preparing cyclododecanone oxime. The method comprises the following steps: 1) heating a mixture of cyclododecanone, a solvent, a catalyst, a hydroxylamine protective agent and an auxiliary agent to a preset temperature; and (2) adding ammonia water and hydrogen peroxide into the mixture in the step (1) for reaction, and continuously aging until the reaction is finished after the charging is finished. A metal organic framework compound (MOFs) is used as a hydroxylamine protective agent, so that the utilization rate of hydrogen peroxide is increased; and amine oxide or ammonium carboxylate is used as an auxiliary agent, so that the ammoximation reaction rate is increased, and meanwhile, the thermal decomposition rate of hydrogen peroxide is reduced. By adopting the method, the conversion rate of the cyclododecanone can reach 99.5% or above and the utilization rate of the hydrogen peroxide can be increased to 90% or above after the reaction is carried out for 1 hour.

The invention discloses a high-density polyethylene flame-retardant sub-pipe prepared from the following raw materials, by weight: 100 parts of high-density polyethylene, 3-6 parts of a plasticizer, 0.1-0.8 part of a 1010 type antioxidant, 0.2-1 part of a 168 type antioxidant, 0.3-2 part of calcium stearate, 0.2-3 part of 58 # paraffin, 8-15 parts of titanium dioxide, 4-8 parts of 2000-mesh lightcalcium carbonate and 3-6 parts of halogenated hydrocarbon. The polyethylene pipe provided by the invention has good ultraviolet resistance, can effectively delay the aging speed of the polyethylene pipe, also has good flame retardant property, and adapts to the use requirements of places such as high-rise buildings and coal mines. The invention further provides a preparation method of the high-density polyethylene flame-retardant sub-pipe, the preparation speed of the pipe can be increased, the raw materials are uniformly mixed in the reaction kettle, and the chemical reaction is stable.