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南京玻璃纤维研究设计院最近研制成功一种涂层玻纤膨体聚四氟乙烯混杂盘根。这种盘根具有耐化学腐蚀性、耐热性、耐磨性和较高的机械强度,适用于耐温、耐磨、自润滑特性的泵及阀等旋转及往复式运动机械的密封。据悉,我国盘根需求量极大,石化、制药、机械、食品、船舶、冶金、纺织等行业均需用盘根作密封填料,而目前使用的四氟盘根价格昂贵。石棉盘根虽然价廉,但内含石棉对
Nanjing Fiberglass Research and Design Institute recently successfully developed a coated glass fiber expanded polytetrafluoroethylene mixed packing. This packing has chemical resistance, heat resistance, abrasion resistance and high mechanical strength, suitable for temperature, wear resistance, self-lubricating features such as pumps and valves rotary and reciprocating motion mechanical seal. It is reported that there is a huge demand for packing in our country. The industries such as petrochemicals, pharmaceuticals, machinery, food, shipping, metallurgy, textile and so on need to use packing as sealing packing, and the PTFE packing currently used is expensive. Asbestos packing, though inexpensive, contains asbestos