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发明授权
CN109777013B 一种石墨烯改性聚四氟乙烯油封唇片材料及其制备方法 有权

一种石墨烯改性聚四氟乙烯油封唇片材料及其制备方法
摘要：
本发明涉及复合材料技术领域，提供了一种石墨烯改性聚四氟乙烯油封唇片材料，由包括以下质量份数的组分制备得到：聚四氟乙烯树脂60～80份；聚醚醚酮5～15份；玻璃纤维1～5份；石墨烯0.1～1份；二硫化钼2～5份；硫酸钡5～15份。本发明提供的石墨烯改性聚四氟乙烯油封唇片材料拉伸强度≥12MPa，断裂伸长率≥200％，摩擦系数≤0.23，磨痕宽度≤4.5mm，性能优异，可达到高速旋转轴在苛刻条件下的密封使用要求，是很有价值的动、静密封材料。本发明还提供了所述石墨烯改性聚四氟乙烯油封唇片材料的制备方法，该制备方法步骤简单，容易操作。
摘要（英）：

The invention relates to the technical field of composite materials, and provides a graphene-modified polytetrafluoroethylene oil seal lip sheet material. The graphene-modified polytetrafluoroethyleneoil seal lip sheet material is prepared, by mass, 60-80 parts of polytetrafluoroethylene resin, 5-15 parts of polyetheretherketone, 1-5 parts of glass fibers, 0.1-1 part of graphene, 2-5 parts of molybdenum disulfide and 5-15 parts of barium sulfate. The graphene-modified polytetrafluoroethylene oil seal lip sheet material has a tensile strength of 12 MPa or above, an elongation at break of 200%or above, a friction coefficient of 0.23 or below and a wear scar width of 4.5 mm or below, has excellent performances, can meet seal use requirements of high-speed rotating shafts under severe conditions, and is a valuable dynamic and static sealing material. The invention also provides a preparation method of the graphene-modified polytetrafluoroethylene oil seal lip sheet material. The preparation method has the advantages of simple steps, and easiness in operation.

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