A blend composition comprising (a) 50 to about 90% of fluorinated elastomer, (b) 10 to about 50% of essentially fluorine-free thermoplastic polymer having a melt temperature or glass transition temperature greater than about 150 C (preferably greater than about 180 C). A curing agent can be mixed with the elastomer when the thermoplastic polymer is blended with the elastomer at an elevated temperature. Articles produced from the cured composition exhibit a continuous service temperature of at least 150 C (preferably at least 180 C) and a volume swell of less than about 150% in methanol and hydrocarbon fuels and oils. The composition and cured articles are reprocessable.
一种共混组合物,包括:(a) 50%至约 90%的含
氟弹性体;(b) 10%至约 50%的基本上不含
氟的热塑性聚合物,其熔融温度或
玻璃化转变温度大于约 150 摄氏度(最好大于约 180 摄氏度)。在高温下将热塑性聚合物与弹性体混合时,可将固化剂与弹性体混合。由固化组合物制成的制品的连续使用温度至少为 150 摄氏度(最好至少为 180 摄氏度),在
甲醇和烃类燃料及油中的体积膨胀率小于约 150%。该组合物和固化物品均可再加工。