Membrane Splitting PTFE Fiber Technology Realizes Industrialization
The reporter learned from an interview with Shanghai Gold Fluorine Materials Co., Ltd. on February 3 that a high-performance film-breaking method was jointly performed by Jinyou Company, Shanghai Lingqiao Environmental Protection Equipment Factory Co., Ltd. and the Military Equipment Research Institute of the PLA General Logistics Department. The fluoroethylene (PTFE) fiber technology and the 1,000-ton industrialization project have produced 700 tons of products in the past six months after being put into production, and have been widely recognized by many domestic and foreign customers. The successful development and industrialization of this innovative technology will have a significant impact on promoting the upgrading of domestic environmental dust removal processes and materials, and expanding the innovative application of PTFE fibers in other fields.
According to Mao Huidong, deputy general manager of Jinyou, the current total production of PTFE fibers in the world is about 2,000 tons/year. After the breakthrough of PTFE fiber products produced by the company from scratch, China’s PTFE fiber production has accounted for 50 percent of the global total. %, the product quality can be comparable with the international same class, and some of the performance exceeds that of foreign countries. Compared with the international price of PTFE fiber of about 1 million yuan per ton, the price of domestic PTFE fiber products is only 1/3 of that of imports.
In September 2011, more than ten experts from the domestic chemical fiber materials, environmental protection, chemical industry and other fields identified the results. Experts believe that the mass production of PTFE fibers is not only a breakthrough for traditional environmental dust removal materials, but also promotes the application of high-performance fibers such as aramid 1313, aryl sulfone, and polyphenylene sulfide fibers on filter media, and promotes the chemical fiber industry structure. The adjustment upgrade.
In the mid-1990s, Shanghai Lingqiao Environmental Protection Equipment Factory organized scientific and technical personnel to conduct research and development of PTFE fiber technology and production equipment. After more than 10 years of experimentation and improvement, technicians have successfully developed PTFE uniform three-dimensional processing and filming process technology. In this process, PTFE resin has been repeatedly mixed, multi-step pressurization, multi-channel stretching, etc. to solve the technical problems such as micro-hole control and thickness non-uniformity in the film production process. In addition, the project has also developed a variety of new technologies such as temperature gradient control of non-uniform velocity, wide amplitude, multi-channel stretching, and membrane splitting and splitting, thereby increasing the strength and linear density uniformity of PTFE fibers produced by the membrane splitting method. .
PTFE fiber is made of polytetrafluoroethylene resin as a raw material and produced by a special process. Due to its high temperature resistance, high pressure, strong acid, alkali resistance, waterproof, breathable, UV-resistant and highly stable properties, this fiber has become the raw material for the preparation of high-temperature corrosive flue gas dust-removing PTFE filter media, and it is also the key to energy conservation and emission reduction. One of the materials. For a long time, only a few countries such as the United States, Austria, and Taiwan of China have the production technology and production capacity of PTFE fibers. After the U.S. authority ETS testing and certification, domestic PTFE fiber has been exported to South Korea, Japan, the United States and Europe, South America, the Middle East and other countries and regions.
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