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民用飞机受经济效益影响的推动,在研发时对重量指标的要求愈加严苛,对维护时间与维护便利性的需求也越来越高。考虑到膨体聚四氟乙烯(e PTFE)用作密封材料具有许多优良的性能,近年来广泛运用于国外民用飞机的接触面密封以满足重量与维护性的需求。基于此,简述了膨体聚四氟乙烯密封材料在民机应用上的发展优势,给出国内民机常见应用范围。
The promotion of civil aircraft driven by the economic benefits has made the requirements of the weight indicators more rigorous in research and development and the demand for maintenance time and convenience of maintenance has also become higher and higher. Considering the many excellent properties of ePTFE as a sealing material, e PTFE has been widely used in the contact face sealing of foreign commercial aircraft in recent years to meet the weight and maintenance requirements. Based on this, the advantages of expanded polytetrafluoroethylene (PTFE) sealant in the application of civil aircraft are briefly described, and the common application range of domestic civil aircraft is given.