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聚氯乙烯、聚乙烯塑料,由于具有电气性能好、价廉、轻便、耐腐蚀、容易加工等优点,因此从四十年代起,被电线电缆行业作为绝缘料和护套料而广泛采用。但在埋地使用中发现,此类塑料极易受到白蚁的蛀蚀,而使电缆出现故障。因此,到五十年代,英、美、德、日等国,即成立专门机构对塑料电缆防白蚁问题进行研究。至目前为止,英、美、日等国已有“药物型”防蚁电缆的生产。采用在护层塑料中加入防蚁剂的方法制造这种电缆,是目前世界各国对付蚁害的主要手段,据称其防蚁效果可达20—30年。但由于不同防蚁剂存在残效期和在生产使用中对人有一定的毒性,因此,国际电报电话委员会,已从物理方面进行探讨,采用自然抗蚁能力较强的新型塑料作为电缆的护套,并已试制出电缆,在澳大利亚蚁害区进行试验。
PVC, polyethylene plastic, due to its electrical properties, inexpensive, lightweight, corrosion-resistant, easy processing, etc., from the forties onwards, by the wire and cable industry as insulation material and sheathing material and widely used. However, it has been found in buried use that such plastic is highly susceptible to termite decay and causes the cable to fail. Therefore, by the 1950s, Britain, the United States, Germany, Japan and other countries, that is, the establishment of specialized agencies on the prevention of termite plastic cable research. So far, Britain, the United States, Japan and other countries have “drug-type” anti-termite cable production. Adopting the method of adding the termite-preventing agent in the plastic of the protective layer to make such a cable is the main means to deal with the ant-harms all over the world at present, and the anti-ant effect is said to be up to 20-30 years. However, due to the existence of different termite-resistant agents and certain toxicities to humans during production and use, the International Telegraph and Telephone Committee has conducted a physical examination of the use of a new type of plastic that is naturally more resistant to ants as a sheath for cables , And has trial-produced a cable to test the ants in Australia.