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本文通过对酚醛纤维浸渍聚四氟乙烯填料的摩擦系数、磨耗量、压缩回弹、应力松弛、热失重等项性能的研究以及作为阀门密封填料的模拟工况寿命试验,分析了该种密封填料的优缺点。现场使用结果表明,该填料无污染,价格与石棉四氟编织填料相仿,是代替石棉的较理想的密封填料。
In this paper, we studied the properties of polytetrafluoroethylene (PTFE) filler, such as the friction coefficient, wear amount, compression resilience, stress relaxation and thermogravimetric properties of the phenolic fiber impregnated PTFE packing, and the simulation service life test as the valve packing. The advantages and disadvantages. Field use results show that the filler pollution-free, similar to the price of asbestos PTFE braided packing, asbestos instead of the more ideal sealing filler.