舰船用高性能密封橡胶研究 (Ⅲ)氟橡胶硫化胶热老化性能研究  

High performance sealing rubber used for ships (Ⅲ) Study on thermal aging properties of fluorinated rubber vulcanizate

作　　者：陈旭东[1] 刘林[1] 许家瑞[1] 章明秋[1] 龚高平[2] 马青华[2] 董作敬[2] 

机构地区：[1]中山大学化学与化工工程学院聚合物复合材料及功能材料教育部重点实验室,广东广州510275 [2]海军装备技术研究所,北京100072

出　　处：《弹性体》2004年第6期16-18,共3页China Elastomerics

基　　金：广东省自然科学基金团队项目 ( 2 0 0 30 38)

摘　　要：研究了热氧老化时间、温度对舰船用氟橡胶硫化胶物理性能的影响。结果表明 ,氟橡胶硫化胶随着老化温度的升高和老化时间的延长 ,硬度和拉伸强度呈现先升高后降低的趋势 ,而伸长率一直降低 ,恒定压缩永久变形一直上升。耐热添加剂Fe2 O3 、SnO2 可显著提高氟橡胶的耐热空气老化性能。The effect of thermal aging time, temperature and metallic oxides on thermal aging properties of fluorinated rubber vulcanizate was studied. The results showed that the metallic oxide Fe_2O_3 and SnO_2 can improve the thermal aging properties of fluorinated rubber vulcanizate. The tensile strength and hardness showed the maximum values with the increase of thermal aging time and temperature. The fracture extension ratio decreased and the permanent deformation increased with the increase of thermal aging time and temperature.

关 键 词：氟橡胶 硫化胶 热老化性能 老化时间 耐热 高性能 热空气老化性能 升高 高氟 降低 

分 类 号：TQ333.93[化学工程—橡胶工业] TQ330.385