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我厂是专门生产,研制用聚四氟乙烯(PTFE)制成的各种动密封件。
　　密封件自第二次世界大战后，均采用橡胶作原料。但随着近代工业的发展，橡胶已不能适应现代机器的高速、高压、高温、高腐蚀、高寿命等要求。必须有一种新的材料来替代它。
　　自从出现了高性能的聚合物----聚四氟乙烯后，它有能力来做各种密封件替代橡胶，满足近代机器日益苛刻的要求。
　　聚四氟乙烯具有以下优点：
1. 工作温度广，可从-200℃到+260℃
2. 化学稳定性强，几乎能耐各种化学药品，包括强酸，碱及溶剂。
3. 摩擦系数极低，仅0.02，是橡胶的1/40。
　　但是，纯聚四氟乙烯不耐磨，磨耗量大。要使它具有实用性，必须对（未完，全文请查看更多）

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