40results about How to "Excellent high temperature aging resistance" patented technology

The invention relates to the field of petroleum drilling engineering, and especially relates to a high temperature-resistant and gas channeling-resistant cement system and a preparation method thereof. The high temperature-resistant and gas channeling-resistant cement system comprises, by weight, 100 parts of cement, 60 parts of composite silicon powder, 1-1.5 parts of inorganically toughened fibers, 1.5-3 parts of a fluid loss agent, 0.3-0.7 part of a dispersant, 6-10 parts of a latex gas channeling inhibitor, 1-1.2 parts of a latex stabilizer, 6-10 parts of nano-liquid silicon, 2.5-8 parts of a high temperature retarder, 1-1.5 parts of an antifoaming agent and 65-90 parts of water. The preparation method of the high temperature-resistant and gas channeling-resistant cement system comprises the following steps: (1) uniformly mixing the cement, the silicon powder and the inorganically toughened fibers in proportion; (2) uniformly mixing the fluid loss agent, the dispersant, the latex gas channeling inhibitor, the latex stabilizer, the nano-liquid silicon, the high temperature retarder, the antifoaming agent and the water in proportion; and (3) slowly adding the mixture obtained instep (1) into a mixture obtained in step (2), and performing rapid stirring by a stirrer.

The present invention discloses a high-temperature-resistant ultraviolet-resistant epoxy resin prepolymer comprising the following components: 20-50wt% of epoxy resin, 40-60wt% of an anhydride curing agent, 1-15wt% of a polyol, 0.1-2wt% of a coupling agent and 0.1wt%-5wt% of an antioxidant; a preparation method of the high-temperature-resistant ultraviolet-resistant epoxy resin prepolymer is as follows: after the epoxy resin and the antioxidant are evenly mixed, the anhydride curing agent and the coupling agent are added, when the reaction system is cooled to 40 DEG C-80 DEG C, the polyol is added for ring opening reaction with anhydride to obtain a carboxylic compound, and the carboxyl compound is reacted with the epoxy resin to obtain the epoxy resin prepolymer. Advantages of the high-temperature-resistant ultraviolet-resistant epoxy resin prepolymer are that: the high-temperature-resistant ultraviolet-resistant epoxy resin prepolymer has excellent high-temperature aging resistance and ultraviolet resistance, and the preparation method is simple, raw materials are easily available, the process is controllable, industrial production is easy, and the high-temperature-resistant ultraviolet-resistant epoxy resin prepolymer can be widely used in electronic device packaging materials, coatings and adhesives and other field.

The invention provides a special high-density polyethylene compound for an automobile windshield washer and a preparation method thereof. The special high-density polyethylene compound for the automobile windshield washer is characterized by consisting of 59-100wt% of HDPE (High-Density Polyethylene), 0-30wt% of LLDPE (Linear Low-Density Polyethylene), 0-10wt% of ESCR (Environmental Stress Crack Resistance) synergist and 0-1wt% of heat stabilizer. The special high-density polyethylene compound for the automobile windshield washer disclosed by the invention has excellent ESCR performance as well as good mechanical properties and heat resistance. As proved by detection, the tensile strength (at 23 degrees centigrade) is not smaller than 24 MPa, the elongation at break is not smaller than 600%, the vicat softening temperature (10N) is not smaller than 120 degrees centigrade, and ESCR (GB/T1842-C) is not smaller than 200 h.

The invention belongs to the cable manufacturing field and specifically provides a heatproof low smoke halogen free flame retardant rail transit rubber cable sheath material which can resist temperature from minus 55 DEG C to 125 DEG C. The rail transit rubber cable sheath material is prepared by the following steps of: mainly selecting polar ethene-vinyl acetate rubber and nonpolar high-molecular silicone rubber materials as basic rubber, adding its corresponding vulcanization system, adding a frame retardant aluminium hydroxide and a zinc borate flame retardant, a zinc stabilizing agent, an ultralow temperature resistant sebacic acid phthalate plasticizer, a silane coupling agent and the like, so as to prepare the low smoke halogen free flame retardant rail transit rubber cable sheath material. The material provided by the invention can resist ultralow temperature of minus 55 DEG C for a long time, can also resist high temperature of 125 DEG C, can resist mineral oil and fuel oil, and has good flame retardance. The material provided by the invention accords with the requirement of the ultralow temperature resistant rail transit controlling cable and can bring convenience for rail transit locomotive cable users.

The invention relates to the technical field of catalysis, in particular to SSZ-13 molecular sieves, production, an SCR catalyst and production. A production method of the SSZ-13 hydrogen-type molecular sieves comprises the steps of (1) mixing an aluminium source, a template composition, a silicon source and an alkaline aqueous solution, and carrying out a gelation reaction to obtain gel; and (2)conducting crystallization, calcination and ammonium exchange on the gel to obtain the SSZ-13 hydrogen-type molecular sieves. The template composition comprises N,N,N-trimethylbicyclo[2,2,2]octane-2-ammonium hydroxide and at least one additional template.

The invention provides an anti-aging HNBR/silicone carbon rubber composite material, a preparation method thereof and an obtained packer, which belong to the technical field of a functional material.The composite material has excellent mechanical properties and aging resistance, and the packer prepared by the composite material can be used for a long time under high temperature oil exploitation conditions, and can still exhibit remarkable mechanical properties after aging for 30 days. The composite material includes 100 parts of supersaturated hydrogenated nitrile rubber, 40 to 50 parts of biomass silicon carbon, 3 to 7 parts of a reaction reinforcing agent, 30 parts of mixed carbon black, 2 to 5 parts of an anti-aging agent, 3 to 8 parts of an auxiliary agent, 3 to 8 parts of an odorlessfree radical initiator, 0.5 to 2.0 parts of a softener, and 2 to 6 parts of an accelerator. The composite material can be used in the preparation of the packer in an oil and gas reservoir exploitation process.

The invention belongs to the manufacturing field of cables, particularly relates to a ratproof cable rubber sheath material which is mainly prepared from the following raw materials in part by weight: 100 parts of polychloroprene, 5 parts of zinc oxide, 1.5-3 parts of vulcanization accelerator, 0.75-1.5 parts of scorch retarder, 3.5-5 parts of antiager, 4 parts of magnesium oxide, 30-60 parts of calcium carbonate, 30-50 parts of reinforcing filler, 1.5-2.5 parts of silane coupling agent, 5-10 parts of operating agent and 2.5-7.5 parts of synthetic capsaicin. The ratproof cable rubber sheath material provided by the invention has the characteristics of better flexibility, oil resistance, weather resistance, inflaming retarding and the like, and not only meets the requirements of field and users on rubber cable rat bite prevention, but also brings convenience for the users.

The invention discloses a high-temperature-aging-resistant chloroprene rubber windshield wiper rubber strip and a preparation method thereof. The high-temperature-aging-resistant chloroprene rubber windshield wiper rubber strip comprises chloroprene rubber, carbon black, an anti-aging agent, a plasticizer, a processing aid, an accelerant, zinc oxide and magnesium oxide. The preparation method comprises the following steps: plastifying chloroprene rubber, pressurizing and banburying with the anti-aging agent and the plasticizer, adding carbon black, the processing aid and magnesium oxide, carrying out internal mixing, adding zinc oxide and the accelerant, carrying out internal mixing, discharging the rubber material when the temperature reaches 100-150 DEG C, carrying out re-mixing on an open mill for 3-6 minutes, pressing into a rubber sheet with an appropriate size by using a tablet press, standing for later use, putting the rubber sheet obtained in the step A into a special mold forthe windshield wiper rubber strip of a compression molding machine, molding for 3-10 minutes at the molding temperature of 150-180 DEG C to obtain a semi-finished product of the chloroprene rubber windshield wiper rubber strip, and performing post-treatment, cleaning, cutting, plasma treatment, spraying and other processes on the semi-finished windshield wiper rubber strip obtained in the step B to obtain the finished chloroprene rubber windshield wiper rubber strip.

The invention relates to the field of polymer chemical engineering, and particularly provides an epoxy resin composition for a transformer as well as a preparation method and application of the epoxyresin composition. The invention, in the first aspect, provides an epoxy resin composition for a transformer, which is prepared from the following raw materials in parts by weight: 80-100 parts of epoxy resin, 50-60 parts of a curing agent, 0.05-0.5 part of an accelerant, 30-70 parts of inorganic filler and 3-5 parts of a toughening agent.

The invention discloses a heat conduction material used for a combustion furnace. The heat conduction material comprises the following components in parts by weight: 5-10 parts of an anti-aging agent, 10-20 parts of a compatilizer, 10-15 parts of an antioxidant, 35-55 parts of filler with high heat conductivity, 15-25 parts of a heat conduction aid, 25-40 parts of a curing agent and 20-30 parts of a curing agent accelerator. The heat conduction material has the technical effects that the heat conduction material has high heat conductivity and good elasticity and is waterproof and dampproof; experimental results show that the heat conductivity of the heat conduction material can be more than 10.8W/(m.K); the heat conduction material has excellent high temperature aging resistance and can resist a high temperature of 500 DEG C for a long time; experimental results show that a heat conduction coating prepared by adopting the heat conduction material can be used in an environment at 500 DEG C.

The invention relates to a composite dipping glue used for preparing a high temperature filter material, which comprises the following components: phenolic resin, a catalyst, a flexibilizer, a cosolvent, an inorganic bonding agent, a coupling agent, a waterproof oil-proofing agent, an anti-grinding agent, a chelating agent, a carbonization agent, a flame retardant agent and a stabilizing agent. According to the invention, a normal temperature mixing stirring method is employed to prepare an aqueous dipping glue, the water-soluble performance of the prepared dipping glue is excellent, the dilution ratio enables wide adjustable degree, the adhesiveness is good, the impregnation is easy, no unfriendly component on environment such as heavy metal ions can be contained, the usage is convenient, the production process control is simple, the pollutant discharge capacity is low, and the cost is low. Compared with other resin-based dipping glue, the modification effect of the composite dipping glue on a filtering base material surface is obvious, The filter material prepared by the dipping glue has excellent high temperature resistance and aging resistance performances and good acid and alkali resistance and corrosivity resistance performances, the conservation rate of toughness under high temperature is high, and the waterproof and oil-proof performances are prominent. The dipping glue can treat various organic and inorganic fiber such as glass fiber, rock wool, basalt fiber, carbon fiber, stainless steel fiber, aramid fiber, polyphenylene sulfide (PPS), terylene and polypropylene.

The invention discloses a polyvinyl chloride cable composite material, a preparation method thereof and a cable. The polyvinyl chloride cable composite material comprises the following components in parts by weight: 100 parts of polyvinyl chloride resin, 5-30 parts of filler, 30-60 parts of a plasticizer, 5-15 parts of a stabilizer, 10-25 parts of a pre-crosslinking modifier, 5-10 parts of a flameretardant, 1-3 parts of a coloring agent and 5-10 parts of a cross-linking agent. The cable provided by the invention comprises the polyvinyl chloride cable material provided by the invention. The polyvinyl chloride cable composite material disclosed by the embodiment of the invention has excellent high-temperature resistance, low-temperature resistance and oil resistance, is environmentally friendly, and is free of toxicity. The polyvinyl chloride cable composite material prepared by the preparation method is stable in performance, and cost is reduced.