20 results about "Aging resistance" patented technology

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.

Disclosed are a plasticizer that, when used for a heat-resistant resin composition, improves elongation retention, enhances aging resistance and heat resistance, and exhibits superior tensile strength, tensile strength retention, heating loss or the like before and after heating, thus contributing to enhancement in physical properties of the heat-resistant resin, a plasticizer composition, a heat-resistant resin composition and a method for preparing the same.

The invention provides a rubber composite used for rubber framework oil seal and a preparation method thereof. The rubber composite contains(based on weight portions) 100 portions of fluorubber26, 5-6 portions of acid absorber magnesia, 5-6 portions of calcium hydroxide, 9-1 portions of strengthening agent black carbon, 19-20 portions of barium sulphate, 17-19 portions of iron oxide red, 2-3 portions of process additive, 1.5-2 portions of curing ingredient bisphenol AF, and 0.6-0.8 portions of accelerant BPP. The rubber composite improves the tension strength, extensibility, tear resistance, self-lubricating effect, compressive deformation resistance and thermal aging resistance of the rubber framework, makes the rubber framework good in medium resistance and prolongs the service life of the rubber framework oil seal. Meanwhile, the method is simple in process, reasonable in mixture ratio and reduces preparation cost and defective index.

The invention relates to an ultra-thin PE (polyethylene) film for a packaging bag. The ultra-thin PE film comprises components in parts by mass as follows: 20-40 parts of EVA (ethylene vinyl acetate) FL0014, 10-30 parts of MLLDPE (metallocene linear low-density polyethylene) 1018 FA, 30-40 parts of linear HDPE (linear high-density polyethylene) 2045Q, 20-35 parts of HDPE LD100AC, 0.5-1.0 part of a slipping agent and 0.2-0.8 parts of an antioxidant. The ultra-thin PE film has the advantages that linear grains in a production process of the film are eliminated, the film has better heat sealing property and ageing resistance, the tensile strength is higher than the national standard by 20%, and the shelf life of the film is prolonged by 6-8 months than the conventional products.

The invention provides a double-sided aluminum base circuit board with super-high thermal conductivity and a preparation method of the circuit board. The double-sided aluminum base circuit board comprises an aluminum base plate material, an electrical conductive hole formed on the aluminum base plate material for communicating the upper side and the lower side of the aluminum base plate material, an aluminum oxide layer formed on the upper and the lower sides of the aluminum base plate material and on the wall of the electrical conductive hole by oxidation method for insulation and heat conduction, and a DLC (diamond-like carbon) coating and a Cu coating adhered on the aluminum oxide layer. The double-sided aluminum base circuit board provided by the invention is excellent in comprehensive heat conducting property, and the surface insulation heat-conducting layer is free of high polymer materials and is excellent in flame retardant property and aging resistance. In addition, the insulation layer on the surface of the circuit board and the insulation layer on the wall surface of the electrical conductive hole are an integrated insulation heat-conducting body with the same composition and an integrated structure, thereby obviating the hole filling and the chemical copper deposition method, simplifying the process and improving the yield.

The invention discloses a preparation method of durable modified asphalt. The method comprises the following steps: performing organic treatment on montmorillonite, pouring the montmorillonite and anintercalator into a flask, feeding a dispersing agent to perform dispersing in the flask, performing stirring and suction filtration on dispersive montmorillonite, so as to obtain a montmorillonite dispersion liquid, washing the montmorillonite dispersion liquid through deionized water and drying to accomplish the organic treatment on the montmorillonite; mixing SBS with asphalt, so as to obtain molten SBS modified asphalt, feeding the montmorillonite subjected to organic treatment and titanium dioxide into the molten SBS modified asphalt, stirring, so as to obtain a mixture, putting the mixture into a stirrer to stir the mixture, and ensuring that the temperature of stirring environment is 140 to 160 DEG C, so as to obtain the durable modified asphalt. According to the method, the durablemodified asphalt prepared from the titanium dioxide replacing nanometer materials is applied to pavement laying, the ageing resistance of pavement can be improved, during the preparation, the costs of the organic treatment on the montmorillonite and the adding design of elastomers are low.

The invention discloses a flame retardant type rubber asphalt waterproof paint. The flame retardant type rubber asphalt waterproof paint comprises the following components in parts by mass: 22-30 parts of asphalt, 3-6 parts of an emulsifying agent, 10-20 parts of rubber, 4-8 parts of layered double hydroxide, 10-16 parts of a filler, 2-4 parts of a stabilizer, 1-3 parts of a defoaming agent and 30-45 parts of water. Through the flame retardant type rubber asphalt waterproof paint, the flame retardant problem of the waterproof material is solved. The paint has the characteristics of good aging resistance and waterproof property, good flame retardant effect and long service life.

The invention discloses a weather-resistant impact-resistant waterproof plugging material with stable quality. The material comprises the following raw materials by weight: 1-2 parts of a water reducing agent, 15-25 parts of polyvinyl alcohol, 10-20 parts of a tackifying promoter, 30-40 parts of a polyurethane prepolymer, 20-30 parts of a magnesium acrylate emulsion, 10-16 parts of ore filling, 3-5 parts of white carbon black, 2-4 parts of a nanometer additive, 5-9 parts of dispersible adhesive powder, 3-7 parts of a weather-resistant aid, 10-14 parts of reinforced fibers and 10-12 parts of water. The waterproof material provided by the invention has the characteristics of stable performance, resistance to cold and heat impact, aging resistance, no cracking, no deformation and superior waterproof performance and impermeability; the material has excellent impact fatigue resistance in outdoor usage and can effectively resist high-frequency repeated impact by heavy rain and hail; the raw materials of the material are safe, reliable, friendly to environment, easily available and cheap; the preparation method for the material is simple; so the material provided by the invention has high practical value and good application prospects.

The invention relates to the technical field of biogas digester materials, in particular to a PVC composite material for a biogas digester and a preparation method of the PVC composite material. The PVC composite material comprises E-PVC paste layers, base coat layers and high-strength polyester sandwiched fabric, wherein the base coat layers are formed by coating the top and bottom surfaces of the high-strength polyester sandwiched fabric with base coat layer coating liquid and then performing drying, plasticizing and cooling; the E-PVC paste layers are formed by coating the base coat layers on the top and bottom surfaces of the high-strength polyester sandwiched fabric with E-PVC paste layer coating liquid and then performing drying, plasticizing and cooling. The performance advantages of two materials namely TPU and organic silicon are combined, the surface dryness of the material can be improved, higher physical and mechanical properties can still be kept after the material is aged, and the material has excellent ageing resistance, excellent scraping resistance, excellent oil resistance and lower using temperature.

The invention discloses heat-resistant modified asphalt, which is prepared from the following raw materials in parts by weight: 140-160 parts of asphalt, 12-16 parts of furan resin, 3-7 parts of dioctyl phthalate, 1-3 parts of sugar alcohol, 2-5 parts of stearamide, 0.8-1.6 parts of mica powder, 0.5-1.2 parts of manufactured sand, 14-16 parts of silicone oil, 3-6 parts of a silane coupling agent, 1-5 parts of an anti-aging agent and 2-6 parts of heat-resistant additives. According to the heat-resistant modified asphalt disclosed by the invention, the performance of the asphalt under a high-temperature condition is improved due to addition of the heat-resistant additive; a mixture of sodium silicate, polyurethane, titanium dioxide and phenolic resin are taken as the heat-resistant additives; the heat resistance is good; the strength of the asphalt can be improved; the viscosity and the ageing resistance of the asphalt are improved due to addition of furan resin, dioctyl phthalate, sugar alcohol, stearamide, mica powder, the manufactured sand, silicone oil, silane coupling agent and the anti-aging agent; and the use of the asphalt under the high-temperature condition is met.

The invention discloses a sealing adhesive used for automobile part changing. The sealing adhesive consists of the following raw materials in parts by weight: 35 to 45 parts of natural rubber, 18 to 26 parts of EPDM rubber, 6 to 8 parts of paraffin oil, 7 to 9 parts of atomizing carbon black, 0.8 to 1.2 parts of sulfur, 5 to 7 parts of a ceramic micro powder, 6 to 8 parts of lignin, 6 to 8 parts of nanosilicon dioxide, 1.1 to 1.4 parts of an anti-aging agent, 9 to 12 parts of a softening agent, 5 to 7 parts of polyethylene glycol, 4 to 6 parts of dimethyl silicone, 1 to 2 parts of polyurethane, 2 to 4 parts of linear polyethylene, 3 to 6 parts of triallyl isocyanurate, 1 to 4 parts of dicumyl peroxide, 1 to 3 parts of a lubrication dispersing agent, 4 to 6 parts of zinc oxide and 5 to 7 parts of sodium silicate. The sealing adhesive has the beneficial effects that firstly, the sealing adhesive is high in lubricating property, high in heat resistance and high in aging resistance, the twisting force is prevented from being increased to cause twisted fracture in the assembling process, and the service life is long; secondly, the sealing adhesive is high in processing safety, high in elasticity, stable in colloid chemistry performance, good in sealing effect, sturdy and durable, high in adhesive property and unlikely to cause sun cracks and falling.

The invention discloses a high-temperature-resistant insulation material applied to power equipment. The high-temperature-resistant insulation material is prepared from the following components in parts by weight: 10-30 parts of polyethylene, 2-10 parts of polyperfluorinated ethylene propylene, 7-10 parts of mica powder, 3-6 parts of butyl rubber, 3-5 parts of inorganic glass fiber, 7-8 parts of ethylene-propylene-diene-terpolymer rubber, 3-10 parts of polytetrafluoroethylene powder, 3-10 parts of alkali-free glass fiber cloth, 3-10 parts of ultraviolet light absorbents, 3-10 parts of epoxy resin, 1.5-3.5 parts of antioxidants and 0.5-5.5 parts of plasticizers. The invention provides a high-temperature-resistant insulation material applied to power equipment and a preparation method thereof. The prepared insulation material has excellent mechanical property, insulation property and high-temperature-resistant property, also has water resistance, weathering ageing resistance and high abrasion resistance, and can meet the requirements of the power equipment on high-temperature resistance and excellent mechanical property.

The invention discloses a long-lasting anti-aging woven bag and a preparation method thereof. Polypropylene and linear low density polyethylene are adopted as substrates, an anti-aging agent and an antioxidant are adopted to improve the anti-aging effect of a material, and then the anti-aging effect of a woven bag in long-term use is improved. The preparation method comprises the following steps:firstly, uniformly mixing raw materials, freezing, drying by heating, continuously heating the dried raw materials by using a pelletizer till the raw materials are molten, performing extrusion drawingby using a grinding head, coiling, and finally weaving, thereby obtaining the woven bag. Due to addition of a drying procedure in the preparation process of the long-lasting anti-aging woven bag, theraw materials are preheated, so that the quality of fiber wires produced later is improved; and the long-lasting anti-aging woven bag is simple in formula, easy in raw material obtaining and low in cost, a made plastic woven bag is good in aging resistance, and the problem that in the prior art a packaging bag is short in service life is solved.

The invention relates to alkali-free glass fiber yarn, which is prepared from the following raw materials in percentage by weight: 20 to 40 percent of pyrophyllite, 15 to 23 percent of borocalcite, 7to 13 percent of limestone, 2 to 5 percent of feldspar, 4 to 8 percent of kaolinite, 3 to 7 percent of dickite, 2 to 6 percent of fluorite, 3 to 9 percent of borax, 1 to 3 percent of fluorite, 1 to 4percent of mirabilite, 0.2 to 1.0 percent of pure alkali, 3 to 12 percent of aluminum oxide, 2 to 6 percent of waste glass fiber yarn and 0.3 to 0.7 percent of a composite clarifying agent. The alkali-free glass fiber yarn disclosed by the invention has the characteristics of high acid-alkali resistance, high mechanical strength, high rigidity, aging resistance, high electric insulation property and high stability.

The invention discloses a flame-retardant outlet nozzle for an air conditioner motor. The flame-retardant outlet nozzle is prepared from the following raw materials in parts by weight: 1.5-2.5 parts of sulphur powder, 60-80 parts of natural rubber, 20-40 parts of butadiene styrene rubber, 10-30 parts of carbon black, 50-100 parts of magnesium hydrate, 75-135 parts of a composite flame retardant, 30-50 parts of naphthenic oil, 0.5-2 parts of microcrystalline wax, 5-8 parts of zinc oxide, 1-1.5 parts of stearic acid, 0.3-0.8 part of a scorch retarder, 0.8-2 parts of an accelerant M, 0.3-1 part of an accelerant DM, 0.5-1.5 parts of an accelerant CZ, 0.3-1 part of an accelerant TMTD, 0.8-2 parts of an anti-aging agent RD, 0.8-2 parts of an anti-aging agent MB and 50-100 parts of argil. The flame-retardant outlet nozzle is excellent in ageing resistance, high-temperature resistance and flame retardant property, low in cost and long in service lifetime.

The invention provides a novel environment-friendly insulating paint and a preparation method thereof. The novel environment-friendly insulating paint is prepared from the following components: modified epoxy resin, polyamide wax, silica sol, carbon black, titanium dioxide nano-powder, diethylene glycol phenyl ether, talcum powder, tetrabutyl titanate, modified starch, modified diatomite, a thickener, a dispersant, a leveling agent, a defoamer, a surfactant and deionized water. The insulating paint prepared according to the invention has good glossiness, good antistatic ability, good mechanical properties, aging resistance and wear resistance, also has certain flame retardant ability, and has price and environmental protection advantages, strong adhesion, good ductility, high temperature resistance and long service life, can effectively improves the production environment, and is conducive to environment-friendly and pollution-free production and use.

The invention discloses a PVC (Polyvinyl Chloride) composite material and a preparation method thereof. The PVC composite material is prepared from the following raw materials in parts by weight: 90 to 110 parts of polyvinyl chloride resin, 8 to 12 parts of PBT (Polybutylene Terephthalate) resin, 1 to 5 parts of triethyl acetyl citrate, 2 to 8 parts of calcium carbonate, 1 to 2 parts of methyltin mercaptide, 1 to 3 parts of an inorganic flame retardant and 0.01 to 0.1 part of an anti-ageing agent. The PVC composite material provided by the invention has the advantages of simple and stable construction technology and low cost and has excellent mechanical property, flame-resisting property and antibacterial property; meanwhile, the PVC composite material has ageing resistance, high temperature resistance and long service life.

The invention discloses an energy-saving transformation module, and a transformed machine room air conditioning system and a control method. According to the technical scheme, the energy-saving transformation module comprises a heat exchanger and a pump; when the energy-saving transformation module is in use, the energy-saving transformation module is connected between an air-cooled condenser anda throttling device of an original machine room air conditioning system; the heat exchanger is provided with a heat exchange medium circulation route and a refrigerant circulation route; the pump is connected with the heat exchange medium circulation route of the heat exchanger, and the pump is used for accelerating the heat exchange medium circulation route of the heat exchanger; the refrigerantcirculation route of the heat exchanger is connected with a refrigerant circulation route in the original machine room air conditioning system; and the transformed machine room air conditioning systemcomprises the energy-saving transformation module which is connected between the air-cooled condenser and the throttling device, so that the existing machine room air conditioning system which is nothigh in aging resistance and efficiency is transformed, the machine room air conditioning system is matched with corresponding refrigerating requirements, and the aims of satisfying the requirementsof transformation field and shutdown can be achieved.

The invention discloses a high-temperature-resistant thermoplastic elastomer and a preparation method thereof. The high-temperature-resistant thermoplastic elastomer is prepared from the following raw materials in parts by weight: 15-25 parts of cis-1,4-polybutadiene rubber, 20-25 parts of acrylate rubber, 5-7 parts of bisphenol A novolac epoxy resin, 10-12 parts of diphenylmethane bismaleimide, 8-12 parts of polyethylene, 5-8 parts of paraffin oil, 3-5 parts of polyethyleneglycol, 4-6 parts of dibasic lead phosphite, 4-6 parts of N,N-diacetyladipyldiamido hydrazine, 1-4 parts of dibutyltin dilaurate, 1-5 parts of citric acid, 3-6 parts of calcium carbonate, 2-4 parts of mullite powder, 8-15 parts of fly ash and 10-15 parts of modified composite filler. The high-temperature-resistant thermoplastic elastomer has the advantages of excellent aging resistance, excellent high-temperature resistance, favorable flame-retardant effect and high oxygen index (up to 33% or above), and can be used in a high-temperature environment for a long time without the phenomena of cracking, bending, shrinkage and the like.