▎ 摘　　要

NOVELTY - Preparation of light-curing carbon paste for far-infrared heating involves (1) pouring sodium hydroxide solution slowly into mixed solution of butyl titanate and isopropanol, mixing, adding conductive material, performing hydrothermal reaction, washing with a hydrochloric acid solution, drying, obtaining modified conductive materials, (2) mixing polypropylene glycol diglycidyl ether, hydroxyanisole, N,N-dimethylbenzylamine, and sodium sulfonate, heating, adding acrylic acid, reacting, obtaining photosensitive prepolymer, (3) dissolving 0.5-1.6 pts. wt. coupling agent in methanol, adding inorganic fillers, ball milling, drying, obtaining ultrafine modified inorganic filler, (4) dissolving 0.2-16 pts. wt. modified conductive material in solvent, obtaining dispersion, (5) mixing the photosensitive prepolymer, the ultrafine modified inorganic filler, and the dispersion, adding photoinitiator, leveling agent, defoaming agent and crosslinking agent, stirring, and grinding. USE - Preparation of light-curing carbon paste (claimed) for far-infrared heating technology for electric heating products e.g. electric heating films, electric blankets, electric heating coatings and electric heating plates. ADVANTAGE - The method produces light-curable carbon paste which can be cured instantaneously under UV light during use, and does not require an additional curing system, and is simple, convenient, easy to operate, and suitable for large-scale industrial production. DETAILED DESCRIPTION - Preparation of light-curing carbon paste for far-infrared heating involves (1) pouring sodium hydroxide solution slowly into mixed solution of butyl titanate and isopropanol, stirring and mixing for 20-35 minutes, adding conductive material, heating 163-184 degrees C, performing hydrothermal reaction for 18-26 hours, naturally cooling to room temperature, washing the reaction precipitate with deionized water, washing with a hydrochloric acid solution with a concentration of 0.1 mol/L until the pH of the precipitate is 7-8, placing in hydrochloric acid solution and stirring for 6-8 hours, washing with deionized water to neutral, filtering, drying the filter cake at 78-84 degrees C, obtaining modified conductive materials, (2) mixing 1-15 pts. wt. polypropylene glycol diglycidyl ether, 0.3-0.8 pt. wt. hydroxyanisole, 0.5-1.2 pts. wt. N,N-dimethylbenzylamine, and 1.3-4.6 pts. wt. sodium sulfonate, heating in oil bath to 105-115 degrees C, adding 40-60 pts. wt. acrylic acid, reacting for 1.5-3 hours, obtaining photosensitive prepolymer, (3) dissolving 0.5-1.6 pts. wt. coupling agent in methanol, adding 4-15 pts. wt. inorganic fillers, ball milling, stirring for 1.5-4 hours, spray drying, obtaining ultrafine modified inorganic filler, (4) dissolving 0.2-16 pts. wt. modified conductive material in solvent, using ultrasonic cell disruptor with a frequency of 30-35 Hz for ultrasonic dispersion, obtaining dispersion, (5) mixing the photosensitive prepolymer, the ultrafine modified inorganic filler, and the dispersion, adding 4-12 pts. wt. photoinitiator, 1.2-4.5 pts. wt. leveling agent, 0.4-1.0 pt. wt. defoaming agent and 3-8.5 pts. wt. crosslinking agent, stirring at a rate of 250-350 rpm for 10 minutes at room temperature, obtaining mixed material, (6) grinding the mixed material, and using grinder for grinding.