ECTFE（乙烯-三氟氯乙烯共聚）简介

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2020-03-25  环球过滤分离技术网   filtrasolution3
After discovering that ethylene has good copolymerization properties with fluorinated monomers,many new fluoropolymers were developed to achieve more favorable application properties. The first fluoropolymer containing ethylene units was ECTFE, which was introduced to the market by the Italian company Ausimont in 1970. ECTFE is an alternating copolymer of ethylene and CTFE

人们发现乙烯与含氟单体具有较好的共聚性能后，更多有应用性的氟聚合物被发明。第一个含有乙烯共聚的是ECTFE（乙烯-三氟氯乙烯共聚），由意大利 Ausimont在1970年发明。

Figure 7. The preparation of ECTFE.





ECTFE is prepared by the copolymerization of ethylene and CTFE at relatively low temperatures (<10 °C) in an aqueous medium using a peroxide catalyst and a halogenated solvent chain transfer agent to regulate the molecular weight .ECTFE polymer chains pack in an extended zigzag confirmation, which results in a crystallinity of 50%–60%. ECTFE has a melting temperature in the range of 220–245 °C depending on the polymerization methods. ECTFE can be used over a broad temperature range from −100 °C to 150°.

ECTFE在相对低的温度 (<10 °C)下聚合得到，用过氧化物引发剂和含卤溶剂作为链转移剂来调节其分子量。ECTFE的熔融温度在220–245 °C ，取决于它的聚合方法，可在 −100 °C to 150°的宽幅范围应用。

ECTFE can be processed by the standard processing methods for traditional thermoplastics in the range of 260–300 °C. It is readily converted into fibers, filaments, films, sheets, and wire and cable insulation. Noticeably, the molten ECTFE is corrosive and special corrosion-resistant steels are used for screw and barrel components.

ECTFE 可用传统热塑性材料的标准加工方法来加工，加工温度是260–300 °C。它可以很容易的加工成纤维、细丝、膜和薄片以及电线电缆的绝缘外皮。值得注意的是，熔融的ECTFE具有腐蚀性，需要特种耐腐蚀的钢材。

As the copolymer with ethylene, ECTFE has moderate chemical resistance, flame resistance, and dielectric constant (2.6). While, it still has excellent radiation resistance, weathering resistance, and barrier properties, as well as good tensile, flexural and wear-related properties. The strength, wear resistance and creep resistance of ECTFE are significantly greater than that of PTFE and FEP. ECTFE film is the most abrasion resistant and highest tensile strength fluoropolymer film available.

由于与乙烯共聚，ECTEF具有中等的耐化学性能，耐燃性和介电常数（2.6）。但它仍具有很优秀的耐辐射性，耐候性和阻隔性能，还有良好的强度，挠曲性和耐磨性。其强度，耐磨性和抗冷蠕性要比PTFE和FEP好。ECTFE膜是所有氟聚合物膜中最耐磨和强度最大的。

The single largest use of ECTFE is the flame-resistant insulation for wire and cable applications,extensively used for aircraft, mass transit and automotive wiring. ECTFE also finds applications in chemical process equipments and components. ECTFE is used in aerospace applications, such as gaskets for liquid oxygen and other propellants, components for spacecraft and aircraft cabins,convoluted tubing, abrasion resistant braid and hose for expandable conduit for space suits.

ECTFE最大的使用量是阻燃电线电缆应用，广泛的应用在飞机，公共交流和汽车线缆。ECTFE也可以用在化工过程和设备中。还可用在航空器，如用于航宇和航空的液氧和其它推进剂的密封、配件等。

At the end of 1999, Ausimont introduced a new family of ECTFE resins under the trademark Vatar,specifically designed to meet the requirements for plenum cable applications. ETCFE is currently manufactured by Solvay under the trademark Halar after acquiring Ausimont in 2002.

1999年末，Ausimont 发明了一系列新的ECTFE树脂，牌号是 Vatar，专门用于天花板隔间的电缆。现在，ECTFE由索尔维公司生产，牌号是Halar。索尔维在2002年收购了奥斯蒙特公司。

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