有机合成绝缘子,在国外已有二、三十年的发展历史。如美国50年代中期首先采用合成绝缘子,联邦德国1967年研制的合成绝缘子先后在27个国家采用。目前全世界已有合成绝缘子数以千万计,最长运行寿命已达十多年。合成绝缘子和绝缘元件在电气化铁路接触网中的应用范围正在逐步扩大,特别是在低净空隧道,几乎普遍采用。分段绝缘器和分相绝缘器的绝缘元件也淘汰了笨重易碎的瓷质材料。在我国70年代末推出环氧树脂绝缘子,以后又推出硅橡胶绝缘子,进入80年代后,郑州 Organic synthetic insulators, in foreign countries have two or three decades of development history. As the United States first used synthetic insulator in the mid 50s, the Federal Republic of Germany in 1967 developed composite insulators have been used in 27 countries. At present, there are tens of millions of synthetic insulators in the world and the longest operational life span has reached more than 10 years. The scope of application of composite insulators and insulating elements in the electrified railway catenary is gradually expanding, especially in low-clearance tunnels and is almost universally used. The segmented and phase-separated isolators also eliminated cumbersome brittle porcelain materials. In the late 1970s, China launched the epoxy resin insulator, later introduced silicon rubber insulator, into the 80’s, Zhengzhou