With the development of economy and the field of high-tech, the comprehensive performance and special performance of fluorine-containing new materials continue to put forward higher requirements. In order to catch up with the world's advanced level, my country's fluoroplastics industry has actively accelerated the pace of industrialization of scientific and technological achievements, and improved comprehensive supporting performance and The level of scientific research has brought the development of fluoroplastic molding and processing in my country to a new stage.

China's recycling fluoroplastics industry began to develop in the 1960 s, mainly for the national defense industry, and the strengthening of military-civilian integration and promotion and application in the late 1980 s led to the rapid development of the recycling fluoroplastics industry. At present, China has basically mastered the main molding processing technology of fluoroplastics, such as molding, extrusion molding, rotary molding, blow molding, spraying and other molding processing methods, and its products are widely used in various fields.

Unlike traditional PE (polyethylene) and PP (polypropylene), fluoroplastics have excellent electrical properties. Perfluorinated plastics not only have more outstanding electrical insulation properties, but also maintain good dielectric strength, dielectric constant (2.1~2.3), volume resistivity and surface resistivity in a wide service temperature range and frequency range, and are not affected by temperature until glass transition temperature. They have low moisture absorption and their dielectric properties are rarely affected by humidity. The electrical properties of perfluorinated plastics do not change with time. Perfluorinated plastics are inert to almost all chemicals and solvents, their excellent properties are maintained even at high temperatures and pressures. Therefore, fluoroplastics play an important role in wire and cable.

Compared with the solid core wire, FEP (fluorinated ethylene polymer) foam wire in addition to light weight, dielectric constant is lower than the solid core wire, while the transmission speed is also faster than the solid core, using them as cable insulation, is conducive to improve the life of the network. With the acceleration of urbanization in China and the increase of high-rise buildings, people's understanding of wire and cable fire accidents is strengthened, and the requirements for cable fire prevention in various fields are getting higher and higher. Because fluoroplastics have excellent high thermal stability, low loss and low flammability, high-frequency data transmission wires and cables that must be resistant to high temperatures and fireproof are mostly made of perfluorinated polymers as insulation layers and outer sheaths. Now,Recycling fluoroplasticsClass 5 and Class 6 digital communication cables made of insulating materials have been used in the construction of high-speed local area network (LAN)100 Mb/s ~ 1000 Mb/s integrated wiring systems for high-rise buildings to quickly and accurately transmit voice, images and data. At the same time, perfluorinated plastics have a low dielectric constant and a particularly low loss factor, and are particularly suitable for data transmission cables that require low attenuation.

It is precisely because of the excellent electrical properties of perfluorinated plastics, with the rapid development of the international communications industry, the output value of fluoroplastics is also rising rapidly. In order to adapt to the new market demand, the processing equipment and technology of fluoroplastics are also developing rapidly, mainly focusing on the technical level of productivity improvement. At present, there are high-speed extrusion and ultra-high-speed extrusion wire devices abroad, and FEP resins with excellent molding stability and suitable for high-speed molding have been developed accordingly. In addition to raw materials, the key is to develop high-speed extrusion device, including extruder die, rapid traction device, shaping, diameter measurement and winding device. High-speed extrusion can reduce product costs and is very competitive in the market.

With the development of the recycling fluoroplastics industry, one of the key technologies in the manufacturing process of large-scale integrated circuits is the cleaning process technology-in order to ensure that the high purity of the treatment liquid during the cleaning process is not affected, it is necessary to use a container or storage tank that does not precipitate any substance into the treatment liquid to preserve these treatment liquids, fluoroplastics have a low dielectric constant, good thermal stability, excellent resistance to most chemicals, good mechanical properties, excellent non-stick and stain resistance on the surface, and are the best materials for making these containers.

At present, the domestic pure fluorine plastic storage tank generally uses rotary molding technology, the technology is also commonly used in perfluorinated plastic hot box processing, now China has been able to process the volume of 50 cubic meters of fluorine plastic hot box, indicating that China's fluorine plastic rotary molding technology has made great progress. However, most of the raw materials for rotary molding of recycled fluoroplastics are single materials, and the pure fluoroplastic storage tank is more expensive.

At present, the multi-layer composite fluoroplastic storage tank can be formed by rotary molding method abroad, and the ultra-purified storage tank with high practical value can be obtained at one time, and the cost is significantly reduced. This kind of storage tank is basically composed of three layers. The inner layer is mostly made of fluorine plastic as an ultra-clean lining layer, the middle layer is an adhesive layer, and the outer layer is a reinforced protective layer. For example, PVDF (polyvinylidene fluoride) is used as the lining layer, polyethylene is used as the outer layer to protect and strengthen the layer, and two different plastics are connected by adhesive between the two layers. This design is characterized by the low cost of the outer layer of polyethylene and the inner layer of PVDF excellent chemical resistance, non-stick, wear resistance and other advantages combined, so that the overall performance of the tank is very ideal. The middle layer uses a modified polyethylene alloy, which contains a material compatible with PVDF, which can better bond the polyethylene and PVDF. It is understood that the storage tank manufactured by this molding method can be used for handling and storing ultra-pure water, high-purity etching liquid and organic solvent.

In addition, the automatic molding technology suitable for processing some large quantities of small fluoroplastic products (such as gaskets, etc.) is still insufficient in our country. Therefore, the technology should be properly developed in the future, including the introduction of necessary equipment, so as to further improve the fluoroplastic molding and processing technology in our country. Experts believe that as a technology-intensive high-tech industry, China's fluoroplastics industry is narrowing the gap with foreign advanced technology level, the future development prospects will be more broad.

This article comes from:www.tflpfa.com

Popular Articles:The production capacity of the fluoroplastics industry has been significantly surplus.