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Organosilicon: technological progress, independent innovation lays the industrial foundation

organosilicon: technological progress, independent innovation lays the industrial foundation

January 4, 2006

in October 2005, Shenzhou VI spacecraft successfully launched two astronauts into space and successfully returned. It is understood that the Shenzhou spacecraft uses 80% silicone and other composite materials by weight, 100% of which are developed by China. Ten years ago, China had to import 100% of such materials from abroad. Fortunately, domestic enterprises have been able to produce all kinds of synthetic materials through independent research and development, with a market share of 80% and a large number of exports. In the past 10 years, great changes have taken place in the silicone industry, which has become a model of independent innovation in China's chemical industry

form an independent innovation system

for a long time, China's silicone industry has built its own upstream, midstream and downstream coordinated development industrial chain, which has begun to take shape, under the adverse circumstances of foreign companies' extrusion, dumping and localization. The new force of the silicone industry is growing. Chinese scientific and technological personnel have begun to stand out at the silicon conference and the European Silicon conference, where the world organic compound annual growth rate has reached 10.9%. In the past 10 years, the number of participants and papers in the national silicon academic conference held every two years in China has reached a record high

in terms of development funds, it has been invested by various national departments before the eighth five year plan. The development of a certain extension length L of the end face of the pressure needle relative to the pressure foot plane is based on enterprise investment, and the company will establish a silicone independent technological innovation system with Chinese characteristics, with LEGO sustainable development materials center as the main body, research institutes, colleges and universities as the main body, in 2015 and 2016. It can be predicted that with the effective integration of domestic silicone upstream, middle and downstream industries, the development and growth of a number of powerful silicone leading enterprises, and the state's increased support and regulation of the silicone industry, it will not be far away for China's silicone industry to fully catch up with the international advanced level

the industrial foundation has been laid

generally speaking, silicone materials can be divided into four categories: silicone oil, silicone rubber, silicone resin and silane coupling agent. The special semi inorganic and semi organic material structure makes it have unparalleled unique properties, and it is an indispensable key material in aerospace, aviation, high-tech, National defense and military industry, and national economy. The first silicone workshop in China was established in the 1950s, so the research and industrialization of silicone is not much later than that in foreign countries, and started almost at the same time as that in Japan

During the sixth Five Year Plan period, the former National Science and Technology Commission and the former Ministry of chemical industry arranged scientific and technological research projects of 10000 ton organosilicon in Chenguang Chemical Research Institute and Jihua Research Institute, such as direct synthesis of ternary high-efficiency catalyst. " During the Seventh Five Year Plan period, the state invested in Jiangxi Xinghuo chemical plant to build a 10000 ton industrial test device for organosilicon, but problems such as raw material quality, equipment quality and capital have plagued the smooth start-up for a long time. In 1997, Xinghuo chemical plant joined Bluestar company, and finally successfully started the 10000 ton organosilicon industrial test device by injecting funds and other measures. The 100000 ton/year methyl chlorosilane fluidized bed, which will be put into operation next year, is the largest device with independent intellectual property rights in China, and will become a milestone in the development of China's silicone industry

at the same time, the calcium carbide plant of Jihua company developed a complete set of technology by itself, and built a methylchlorosilane mixed monomer fluidized bed of 2000 tons/year in 1985, two additional fluidized beds were built in 1999, and a production plant of 50000 tons/year was built not long ago. Xin'an chemical industry group company is a rising star. In 1984, it introduced technology from Beijing No.2 Chemical Plant and Jihua company respectively, and cooperated with China Blue Chenguang Chemical Industry Research Institute and other units to successively build three fluidized beds with a total capacity of 60000 tons/year. The plant uses methyl chloride, a byproduct of pesticides, as raw material, which reflects the characteristics of circular economy. In 1997, due to the good production conditions of the two major monomer production plants, Xinghuo chemical plant and Jilin Chemical Company calcium carbide plant, the total output of methylchlorosilane in China reached a record of more than 13000 tons

the development of the industry has entered the fast lane

after entering the new century, all factories have continuously improved their processes, expanded and added devices. The total output of the country reached more than 47000 tons in 2000, about 60000 tons in 2001, about 90000 tons in 2002, a historic breakthrough of 100000 tons in 2003, and a record of 150000 tons in 2004. This year's output is expected to have greater growth, which shows that China has mastered the software and hardware for the construction of large-scale monomer production plants on the basis of complete self-reliance, and has the ability to increase monomer output by itself

although the production increase is calculated in 10000 tons, it still cannot meet the rapidly growing demand. China's silicone monomer enterprises have not slackened their efforts. In view of the current situation that domestic monomers can only meet one-third of the demand and a large number of imported intermediates, they have made plans to expand their production. It is conservatively estimated that during the "Eleventh Five Year Plan" period, the output of methylchlorosilane of domestic enterprises may reach more than 750000 tons/year, surpassing Japan and becoming the world's second largest silicone production and consumption country

domestic enterprises have carried out a lot of exploration and practice in order to understand the way out of the problem of removing the diseased intervertebral disc and solving the by-product of silicone monomer recommended by doctors. It is worth mentioning that with the help of the industry, Guangzhou Gibbs company has overcome many difficulties, successfully developed the process technology for large-scale production of fumed silica from the by-products of silicone monomers, built large-scale production plants in Jiangxi and Jilin, and signed a cooperation agreement with Xin'an chemical industry to build a 5000t/a fumed silica production plant, The commissioning of these devices will completely end the monopoly of imported products on the domestic market and fundamentally eliminate the by-product bottleneck that restricts the silicone monomer industry

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