46results about How to "Simple industrial preparation" patented technology

The invention discloses a transparent heat-resistant polycarbonate material and a preparation method thereof. The polycarbonate material is a blend of polycarbonate, polyarylate and organic salt. The preparation method is to vacuum-dry polycarbonate and polyarylate at 80-120°C for 24-48 hours respectively; dry polycarbonate, polyarylate and organic salt according to the mass ratio of 60-90:40-10: 0.3-3, put into the melting and mixing equipment for melting and kneading at 250-300°C to obtain a mixture; discharge the mixture from the melting and mixing equipment, and lower it to normal temperature to obtain a polycarbonate material. The polycarbonate material in the invention has excellent light transmittance and good heat resistance, and its preparation method only needs to use common melting and mixing equipment, and the industrial preparation is simple.

The invention relates to a complex catalyst for viscosity reduction of thick oil by hydrothermal catalytic cracking and application thereof. The complex catalyst is prepared by the following steps of: 1) selecting raw materials: selecting 2 to 3 mass parts of C12-C18 aliphatic carboxylic acid, 1 to 2 mass parts of ethylene dimine, 3 to 5 mass parts of sodium fluoroacetate, 1 to 2 mass parts of sodium hydroxide, 3 to 5 mass parts of nickel chloride hydrate and 140 to 180 mass parts of toluene; and 2) mixing the C12-C18 carboxylic acid and ethylene dimine, then heating to 160 to 180 DEG C in anoil bath and reacting for 2 to 3 hours, cooling to 90 to 95 DEG C, adding sodium chloroacetate-containing aqueous solution, stirring, reacting for 40 to 50 minutes and then adding NaOH, continuously reacting for 10 to 13 hours at the temperature of between 90 and 100 DEG C, finally adding the NiCl2.6H2O and the toluene, refluxing and splitting water for 3 to 5 hours and filtering, and performing reduced pressure desolvation on the filtrate to obtain the catalyst, wherein after the reaction is finished, the viscosity reduction rate of the thick oil reaches over 90 percent, and 9 to 15 percent of heavy component is cracked into a light component.

The invention discloses an optically transparent polymethyl methacrylate / polycarbonate composite and a preparation method thereof. The material of the invention is a blend of polymethyl methacrylate, polycarbonate and an organic salt whose cation is a metal. The mass ratio is 60-90:40-10:0.2-3. In the present invention, adding the metal organic salt as the cation greatly improves the compatibility between polymethyl methacrylate and polycarbonate, greatly improves the light transmittance of the material, and makes the light transmittance of the material greater than 90%. , the haze is less than 10%, the refractive index is greater than 1.49, and the material is optically transparent.

The invention discloses a supersoft halogen-free flame retardant thermoplastic elastomer and a preparation method thereof. The existing commercialized thermoplastic elastomer hardly realizes integration of halogen-free flame retardance and softness. The elastomer is a blend which comprises ethylene vinyl acetate crosslink, ethylene vinyl acetate (EVA), a peroxide vulcanizing agent and a flame retardant. The method comprises the following steps of: carrying out dynamic vulcanization on the ethylene vinyl acetate (EVM), ethylene vinyl acetate (EVA) and the vulcanizing agent according to the mass ratio of 1000:1000:0.1-5 at the temperature of 30-200 DEG C, drying and preparing a base material; and adding the flame retardant into the base material, fusing and blending at the temperature of 140-250 DEG C, and discharging to prepare the elastomer. The supersoft halogen-free flame retardant thermoplastic elastomer disclosed by the invention has the advantages of good softness, excellent flame retardance, no halogen, simple industrial preparation, economical processing and recoverability.