共查询到18条相似文献,搜索用时 125 毫秒
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玻璃微珠对改性聚四氟乙烯密封板材性能影响的研究 总被引:4,自引:0,他引:4
采用冷压成型和自由烧结工艺研制开发出了一种新型填充改性聚四氟乙烯(PTFE)密封板材。深入研究了玻璃微珠对PTFE密封板材性能的影响,结果表明:当玻璃微珠含量在30%左右且粒径为10μm时,PTFE密封板材的回弹率由纯PTFE的21.8%提高到55.8%,压缩率由纯PTFE的42.7%降低到32.6%,PTFE板材气密性能得到了显著提高。 相似文献
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聚四氟乙烯复合材料与弹性体的组合应用 总被引:2,自引:0,他引:2
本文介绍了聚四氟乙烯复合材料的物理机械性能、摩擦磨损性能,由聚四氟乙烯复合材料与弹性体组合而成的 密封具有二者双重优点,密封效果好,摩擦阻力小,综合性能优良,简要介绍了组合密封在液压气动等方面的应用。 相似文献
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聚四氟乙烯垫片作为一种非金属密封元件,因其耐高低温、抗腐蚀性及抗老化等特性,被用于工业设备中机件之间的密封连接,其本身的属性决定了PTFE垫片的使用场合。本文基于聚四氟乙烯垫片的密封性能,从聚四氟乙烯材料特性及PTFE垫片技术要求的角度对其介绍,重点对优化PTFE垫片的密封性能方法进行论述,为提高聚四氟乙烯垫片的密封性能及减少安全事故提供思路。 相似文献
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介绍了聚四氟乙烯盘根的性能及试制聚四氟乙烯盘根的工艺过程,并对该厂自制的聚四氟乙烯盘根在各种密封部位的应用进行了分类归纳。 相似文献
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介绍了高压往复运动密封结构形式和几何形状,并介绍了用于高压往复运动密封的聚四氟乙烯复合材料及其摩擦磨损性能。 相似文献
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Theo Pilhofer 《化学,工程师,技术》1984,56(4):299-305
Scope of glass as material of construction in plant engineering. In conjunction with PTFE as sealing material, borosilicate glass is nowadays recognized as a material for plant construction. A complete modular system of individual components with suitable connecting pieces is available. Moreover, a variety of equipment has been developed for accomplishing various processes while paying due attention to the special material properties of the material glass. In combination with other materials, primarily in the field of heat exchangers and evaporators, numerous processes are now conducted without any difficulty in glass plant. In this range of processes, a special place is assumed by those which urgently require glass for corrosion reasons, such as chlorination or bromination reactions or concentration of acids, because specialized know-how is sometimes required. 相似文献
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GAN Feifang TAI Li 《中国耐火材料》2005,14(3):25-26
1IntroductionSome coke ovens have been in operation for over20years in Baosteel,cracks and leaks are found in thesilica brick walls and roofs of coke oven.The existenceof cracks causes the emission of smoke from ovens,which may probably affect the service life of oven.Thewall surface is often destroyed by the extension ofcracks,resulting in eventual shutdown of the oven.Inorder to obtain stable coke oven operation over a longterm,many kinds of repair techniques,such as hot re-pairing,gunning,… 相似文献
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水电解装置用无石棉静密封垫片的研制 总被引:5,自引:0,他引:5
介绍了聚四氟乙烯(PTFE)无石棉密封垫片的研制,以耐碱玻璃纤维、三氧化二铝、二硫化钼填充的PTFE静密封垫片,其综合性能已达到PTFE石棉垫片的技术指标,可以满足水电解高温、中压工艺的使用条件。 相似文献
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