Study On Preparation, Modification And Industrial Feasibility Analysis Of Vulcanized Silicone Rubber

Vulcanization silicone rubber has many advantages, such as low surface tension, low viscosity, compressibility, fire retardant, hydrophobic, gas permeability, electrical insulation, high chemical resistance, wide range of temperature adaptation, non-toxic, tasteless, and physiological inertia, so that it is widely used in aerospace, electrical equipment, construction, chemical industry, textile, food, light industry, medical and other industries. In recent years, the demand for vulcanization silicone rubberbuilding become more heavily as the rapid development of automobile, electronic and information industry. However, the transparent silicone rubber without adding any packing materials intensity is almost no application value. Therefore, in order to get excellent vulcanization silicone rubber, the transparent silicone rubber must be modified.In this paper, organic silicon monomer, methyl siloxane and room temperature vulcanized silicone rubber are synthesized directly with industrial silicon elemental and methyl chloride.The results shows that the conversion of vinyl silicone oil can reach the maximum in the condition of 200 ℃, t = 1 h and the dosage of catalyst was 0.012%. Infrared test results show that the synthetic vinyl silicone oil with typical characteristic peaks of-Si-O-Si-,--CH3 and-CH=CH2 groups is pure.And then, the vulcanizing silicone rubber is modified by adjusting the content of white carbon black and vinyl.The results show that when the dosage of white carbon black was 4% and the dosage of vinyl 0.015 mol %, the curing time and gel time of the vulcanized rubber get shorter, vulcanized rubber viscosity is suitable and the hardness and tensile strength of ulcanizing silicone rubber achieve optimization.Finally, the industrial feasibility of vulcanization silicone rubber project is analyzed based on the vulcanization silicone rubber synthetic process. The results show that the process proposed in this paper is simple and technically feasible. The industria and economic prospect is promissing due to low-cost raw materials resource and excellent performance of materials production. The project can realize sales income 500 million yuan and the profit of 80 million yuan 15 months in project construction period, operation period of 20 years. The static payback period of this project is 4.2 years and all investment tax financial internal rate of return is 30%, which is higher than the benchmark yield 10% and bank loans interest.