1·The biggest difficulty is chemical deposition of copper of PTFE activation pretreatment, is also the most crucial step.
其最大的难点是化学沉铜前的聚四氟乙烯活化前处理，也是最为关键的一步。
2·Its impact strength is 20 times that of polyvinyl chloride, nylon 10, 66 times, 8 times of ptfe.
其冲击强度是聚氯乙烯的20倍，尼龙66的10倍，聚四氟乙烯的8倍。
3·Therefore, a PTFE diaphragm cannot be used as a replacement in an EPDM trimmed valve.
因此，一个聚四氟乙烯隔膜不能用作配置三元乙丙橡胶阀内件的阀门的更换件。
4·Plastic products, have a good corrosion resistance, the more common use. Varieties are polyethylene, polypropylene, soft PVC, PTFE, nylon 66, nylon, etc. 1010.
塑料制品，有很好的耐腐蚀性能，使用也较普遍。品种有聚乙烯、聚丙烯、软聚氯乙烯、聚四氟乙烯、尼龙66、尼龙1010等。
5·Expansion concept of PTFE dispersion resins and concerned parameters are introduced, and processing procedures, method and devices are reviewed in combination with examples.
介绍了聚四氟乙烯分散树脂膨体化的概念和有关参数，结合实例叙述了其加工工艺、方法和设备。
1·Steam solenoid valve is used for steam system, steam piping, solenoid valve used to control the steam, the seal or PTFE soft seal, high temperature.
是指用于蒸汽系统、蒸汽管道，用来控制蒸汽的开关的电磁阀，采用硬密封或者四氟软密封，能耐高温。
2·PTFE material for corrugated pipe is made, pressure, pressure large, easily lead to broken bellows.
因波纹管是四氟材料制作的，压力、压差大，容易导致波纹管破裂。