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补强和硫化体系对封隔器用氢化丁腈橡胶胶料性能的影响

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  • Key Words:氢化丁腈橡胶;;封隔器;;炭黑;;硫化体系;;芳纶短切纤维;;取向

  • Abstract:研究补强和硫化体系、芳纶短切纤维对封隔器用氢化丁腈橡胶(HNBR)胶料性能的影响。结果表明:与短切纤维和硫化剂相比,炭黑对HNBR胶料的门尼粘度影响较大;随着炭黑和短切纤维用量增大,胶料的交联密度和硬度提高;随着炭黑和硫化剂用量增大,胶料的焦烧时间和正硫化时间缩短;随着短切纤维用量增大,胶料的焦烧时间和正硫化时间延长;填充短切纤维的胶料拉伸强度和拉断伸长率降低,但在小应变下的拉伸应力大幅提高,且表现出与热塑性弹性体相似的屈服和冷流现象;短纤维取向方向与拉伸方向平行的胶料短切纤维承载应力,拉伸应力较高;短纤维取向方向与拉伸方向垂直的胶料橡胶基体承载应力,拉伸应力较低;填充与拉伸方向平行取向的芳纶短切纤维能提高封隔器在小应变下的拉伸应力。

  • Volume:v.65

  • Issue:06

  • Translation or Not:no

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