热酸环境对氟橡胶性能的影响

246型氟橡胶进行热酸（80 ℃的质量分数为0.05的盐酸溶液）浸泡腐蚀试验，并对浸泡前后的试样进行热性能、拉伸性能测试及表面形貌观察。结果表明：热酸浸泡对氟橡胶的热性能影响不大，试样的拉伸性能下降，表面由光滑变粗糙，并形成了大小不一的孔洞；硫酸钡填料的加入对氟橡胶的热酸腐蚀有抑制作用。;Hot acid immersion corrosion experiments were carried out on fluororubber 246 using hydrochloric acid solution with a mass fraction of 0.05 hydrochloric acid at 80 ℃. The thermal performance，tensile properties and surface morphology of the samples before and after immersion were tested. The results showed that，the hot hydrochloric acid immersion had little influence on the thermal performance of the sample，and the tensile properties decreased. The smooth sample surface became rough from smooth after acid immersion，and holes with different size were formed on the sample surface. The addition of barium sulfate could inhibit the corrosion of hot hydrochloric acid