47results about How to "Proper liquidity" patented technology

The invention discloses a high-temperature-resistant rubber sealing ring for automobiles. The high-temperature-resistant rubber sealing ring comprises the following raw materials in parts by weight: 70-90 parts of ethylene-propylene-diene-terpolymer rubber, 10-30 parts of chloroprene rubber, 1-4 parts of an anti-aging agent, 0.8-1.5 parts of active zinc oxide, 0.2-0.4 part of magnesium oxide, 0.5-1.0 part of calcium oxide, 0.6-1.5 parts of butyltin mercaptide, 30-40 parts of modified kaolin, 10-15 parts of magnesium methacrylate, 1-3 parts of a promoter, 6-10 parts of soybean oil, 1-2 parts of ethyl methacrylate, 40-80 parts of paraffin oil, 0.2-0.5 part of triallyl phosphate, 1.0-1.5 parts of a crosslinking agent BIBP, 0.5-1.2 parts of an assistant crosslinking agent TAIC, 0.3-0.5 part of microcrystalline wax, 2-3 parts of a vulcanizing agent and 0.5-1 part of phthalic anhydride. The sealing ring disclosed by the invention has strong weather resistance, corrosion resistance and ozone resistance, and can be suitable for being used as the high-temperature-resistant rubber sealing ring for the automobiles.

The invention relates to a high-glow-wire flame-retardant reinforced PET / PA alloy material and a production method thereof, which belong to the field of polymer materials and use polyethylene terephthalate, polycaprolactam, glass fiber, toughening compatibilizer, Brominated flame retardant, antimony trioxide, zinc borate and antioxidant as raw materials, it can be prepared by the following methods: drying, mixing, extrusion, pelletizing, and finally made into high glow wire flame retardant Glass fiber reinforced PET / PA alloy material, its technical feature is that the raw material composition includes: polyethylene terephthalate 20-30%, polycaprolactam 20%-30%, glass fiber 30-35% in weight percentage , Toughening compatibilizer 5-8%, brominated flame retardant 6-8%, antimony trioxide 1.5-2.5%, zinc borate 1-1.5%, antioxidant 0.3-0.5%. The high glow wire flame-retardant glass fiber reinforced PET / PA alloy material produced by the invention has good fluidity, high glow wire performance and mechanical properties, and the production process is simple.

The invention discloses a magnetic iron oxide basis material for anti-forgery ink and a preparation method thereof, wherein the material consists of the following raw materials: a mixture of hexamethylene diisocyanate and isophorone diisocyanate, polyhexanediol, a mixture of dimethylol propionic acid and dimethylol butanoic acid, N-methyl pyrrolidone, 1,4-butanediol, lithium hydroxide, triethylamine, ferrous chloride, ferric chloride, de-ionized water and a catalyst. The preparation method comprises the following steps of: making polyhexanediol, ferrous chloride and ferric chloride react in a water bath in presence of nitrogen; adding the mixture of the hexamethylene diisocyanate (HDI) and the isophorone diisocyanate (IPDI), and the catalyst, and reacting; adding the dimethylol propionic acid (DMPA) and the dimethylol butanoic acid (DMBA) which are dispersed in the N-methyl pyrrolidone (NMP), and reacting; adding the 1,4-butanediol, the triethylamine (TEA) and the lithium hydroxide (LiOH) liquid, emuslfiying and regulating the pH value to be alkaline; and reacting to obtain the product. The preparation method disclosed by the invention is simple in process and convenient in operation, and the prepared material has stable magnetism and excellent dispersing performance.

The present invention relates to a kind of epoxy resin composition suitable for batch production of fiber reinforced composite material and the prepreg material utilizing it, the epoxy resin composition comprises following component (A), component (B), component (C) and component ( D): (A) mixture of bifunctionality BPA type epoxy resin and tetrafunctionality glycidylamine type epoxy resin; (B) dicyandiamide as epoxy curing agent; (C) as curing accelerator A mixture of aliphatic tertiary amine adduct type latent curing agent and imidazole; (D) carboxyl-containing polyvinyl acetal resin as a thermoplastic polymer. According to the present invention, it is possible to provide a prepreg which is excellent in storage stability at room temperature, can be thermally cured within a few minutes to be suitable for mass production, and can control resin fluidity during compression molding without causing internal and external defects of the molded product.

The invention discloses a preparation method of chlorendic anhydride. The chlorendic anhydride is prepared through a reaction of maleic anhydride and hexachlorocyclopentadiene. According to the invention, maleic anhydride is added into hexachlorocyclopentadiene, wherein a molecular ratio of maleic anhydride to hexachlorocyclopentadiene is (1-1.05):(1-1.05). A diluting agent should be added before or during the reaction. The reaction temperature is 150-180 DEG C, and a reaction time is 2-5h. According to the invention, maleic anhydride is added into hexachlorocyclopentadiene, and a reaction is carried for 2-5h under a temperature of 150-180 DEG C, such that high-quality chlorendic anhydride is successfully produced, and a yield reaches 96%. The chlorendic anhydride can be directly used in polyester production. The method has the advantages such as easy-to-obtain raw materials, short reaction time, simple operation, low investment, and high yield.

The invention discloses a flame-retardant nano-composite rubber material and a preparation method thereof. The raw materials are respectively composed of 60% of modified rubber matrix, 25% of nano-powder, 10% of surfactant and 5% of The composition of the dispersant; in the present invention, the nano-powder and a part of the surfactant are sprayed against each other under the auxiliary action of pure air, and are dried to form a layer of coating to wrap the nano-powder, and then it is mixed with the The other part of surfactant is blended evenly, so that the affinity of the nano-powder is improved, and the effect of each raw material constituting the nano-powder can be more clearly displayed, and then it is combined with the dispersant, pressed glue and cut The modified rubber matrix after the glue is blended, then dried and kneaded to make it have proper fluidity and processability, and based on the synergistic flame retardancy and excellent dispersion and bonding capabilities of the two, the flame retardancy of the product is achieved. The effect is significantly improved and is a permanent flame retardant.