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[Shihua Financial News] It is reported that some media previously disclosed that new chemical materials will be included in the 12th Five Year Plan of the chemical industry, and will focus on developing engineering plastics, special rubber, high-performance fibers, and organic fluorine materials
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A large number of foreign fluorine plastic products processing enterprises have entered China
The Secretary General of the China Fluoroplastics Processing Professional Committee analyzed that in the next 5-10 years, China is highly likely to become a production base for fluoroplastic products (especially low-end products) in the world
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Characteristics and main uses of PFA
PFA, commonly known as fusible PTFE, has the highest performance among fluoroplastics and similar uses to FEP. Widely used in semiconductor industry, medical treatment, chemical anti-corrosion, automobile and other fields
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While more and more domestic fluorinated plastic products are going abroad, many well-known foreign fluorinated plastic processing enterprises have already or are preparing to settle in China. In the future, China is highly likely to become a production base for fluoroplastic products (especially low-end products) in the world. For domestic enterprises, the top priority is to adjust their business strategies in a timely manner, improve their own advantages, and establish a foothold in the market.
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Characteristics of fluoroplastic heat exchangers
The chemical properties of fluoroplastics are extremely stable, with excellent corrosion resistance. The surface of the fluoroplastic pipe wall is smooth and has moderate flexibility, and there is slight vibration during use, so it is not easy to scale. Fluoroplastic heat exchangers have a small volume and compact structure, and the heat transfer area per unit volume of the equipment is more than four times that of metal tube shell heat exchangers. Flexible fluoroplastic pipes can work under the impact and vibration of fluids, and tube bundles can be made into various special shapes as needed. Fluoroplastics have low thermal conductivity, poorer mechanical properties than metals, and are not resistant to high temperatures. The use of small diameter and thin tube walls, although compensating for thermal conductivity and mechanical properties, can still only be used in lower pressure and lower temperature situations.
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The Forming Performance of PFA Plastics
1. Crystalline material with low moisture absorption. Products can be processed using the usual processing methods of thermoplastic. 2. Poor fluidity, easy to decompose, and produce corrosive gases during decomposition. It is advisable to strictly control the molding temperature not to exceed 475 degrees Celsius, the mold should be heated to 150-200 degrees Celsius, and the pouring system should have low resistance to material flow. 3. Semi transparent granular material, injection molding, extrusion molding. The molding temperature is 350-400 degrees Celsius, and above 475 degrees Celsius, it is easy to cause discoloration or bubbles. And pay attention to the difficulty of demolding. 4. Due to the corrosive effect of molten materials on metals, long-term production requires chromium plating treatment for molds.
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