CN108285562A - 一种氢化丁腈复合材料及其制备方法 - Google Patents
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Abstract
本发明提供一种氢化丁腈复合材料,按照质量份数计,各组分的配比:氢化丁腈橡胶100份;甲基丙烯酸20~25份;蒙脱土8~10份;氧化锌16~20份;硬脂酸1~2份;防老剂0.5~1.5份;硫化剂4~8份;硫化助剂1~2份。本发明还公开了上述材料的两种制备方法,将原位合成的甲基丙烯酸锌和有机改性蒙脱土两种功能性填料很好的分散到了橡胶基中。所制备的氢化丁腈复合材料具有良好的耐高温性和耐化学介质性。
Description
技术领域
本发明涉及高分子材料技术领域,涉及到能应用于耐高温、耐化学介质的氢化丁腈复合材料。
背景技术
随着科学技术和工业的快速发展,现有市场上的丁腈橡胶在应用到高温、化学介质腐蚀等较恶劣环境时,其性能已满足不了要求。氢化丁睛橡胶与传统的丁睛橡胶相比,其分子结构中含有少量或不含碳碳双键,它不仅具有的耐油、耐磨、耐低温等性能,而且还具有更优异的耐热氧老化、耐臭氧、耐化学介质和良好的动态性能等,是目前最具发展潜力的橡胶品种之一,在许多方面已取代了氟橡胶等其它特种橡胶,已广泛地应用于汽车、油田等工业领域。
发明内容
本发明目的在于提供一种能够耐高温,耐化学介质的氢化丁腈橡胶组合物,可以应用于油田、汽车等领域。
本发明为解决上述提出的问题所采用的技术方案为:
一种氢化丁腈复合材料,其特征在于按照质量份数计,各组分的配比:
氢化丁腈橡胶100份;
甲基丙烯酸20-25份;
蒙脱土8-10份;
氧化锌16-20份;
硬脂酸1-2份;
防老剂0.5-1.5份;
硫化剂4-8份;
硫化助剂1-2份。
其中,所述的氢化丁腈橡胶的氢化度大于99%,丙烯腈含量为43%,门尼粘度55-70,残余双键含量≤0.9。
其中,所述的氧化锌为纳米氧化锌,其平均粒径是9nm-10nm.比表面积是89m2/g-80m2/g。
其中,所述的硫化剂为过氧化物,特别是过氧化二异丙苯,过氧化-2-乙基己基碳酸叔丁酯或者它们的混合物,混合物的比例为2∶1~1∶2之间.
其中,所述的防老剂为N-环己基-N’-苯基对苯二胺和2-巯基苯并咪唑,比例为2∶1~1∶2之间;
其中,所述的硫化助剂为三烯丙基异氰脲酸酯.
一种氢化丁腈复合材料的制备方法,包括如下步骤:将氢化丁腈橡胶在开练机塑练,50℃左右打两面三刀及三角包10~20次,至混合均匀下片,塑练后,加入到60℃密练机内,然后依次加入硬脂酸、氧化锌、防老剂、混炼一段时间待扭矩平稳5分钟后,滴加甲基丙烯酸,然后将密炼机温度升高到100℃,加入蒙脱土混炼10分钟,获得I型混炼胶.将I型混炼胶在开练机混炼,然后加入硫化剂和硫化助剂,混炼均匀后下片,在平板硫化仪上,于165℃下,硫化20mins,获得硫化氢化丁腈橡胶,进行性能测试。
一种氢化丁腈复合材料的制备方法,包括如下步骤:将氢化丁腈橡胶在开练机塑练,50℃左右打两面三刀及三角包10~20次,至混合均匀下片,塑练后,加入到100℃密练机内,加入蒙脱土混炼10分钟;将密练机降温至60℃,然后依次加入硬脂酸、氧化锌、防老剂、混炼一段时间待扭矩平稳5分钟后,滴加甲基丙烯酸,获得II型混炼胶,然后,将II混炼胶在开练机上加入硫化剂和硫化助剂,混炼均匀后下片,在平板硫化仪上,于165℃下,硫化20mins,获得硫化氢化丁腈橡胶,进行性能测试.
本发明具有如下有益效果:以氢化丁腈橡胶为主体材料,以原位合成的甲基丙烯酸锌和有机改性蒙脱土为功能性填料,所制备的氢化丁腈复合材料具有良好的耐高温性和耐化学介质性,以及良好的力学性能。
具体实施方式
为了更好地理解本发明,下面结合实施例进一步阐明本发明的内容,但本发明不仅仅局限于下面的实施例。
实施例1
将100份氢化丁腈橡胶在开练机进行塑练后,加入到60℃密练机内,然后依次加入1份硬脂酸、16份氧化锌、0.5份防老剂、混炼一段时间待扭矩平稳5分钟后,缓慢滴加20份甲基丙烯酸,然后将密炼机温度升高到100℃,加入10蒙脱土混炼10分钟,在开练机上加入4份过氧化异丙苯和1份三烯丙基异氰脲酸酯,混炼均匀后下片。在平板硫化仪上,于165℃下,硫化20mins,获得硫化氢化丁腈橡胶,进行性能测试。
实施例2
将100份氢化丁腈橡胶在开练机进行塑练后,加入到100℃密练机内,然后加入10份蒙脱土混炼十分钟;将初步混炼的橡胶放入60℃密炼机内,然后依次加入2份硬脂酸、20份氧化锌、1.5份防老剂、混炼一段时间待扭矩平稳5分钟后,缓慢滴加25份甲基丙烯酸,然后在开练机上加入8份过氧化二异丙苯,过氧化-2-乙基己基碳酸叔丁酯,比例为1∶1和2份三烯丙基异氰脲酸酯,混炼均匀后下片,制得混炼胶。在平板硫化仪上,于165℃下,硫化20mins,获得硫化氢化丁腈橡胶,进行性能测试。
实施例3
将100份氢化丁腈橡胶在开练机进行塑练后,加入到60℃密练机内,然后依次加入1份硬脂酸、17份氧化锌、1份防老剂、混炼一段时间待扭矩平稳5分钟后,缓慢滴加22份甲基丙烯酸,然后将密炼机温度升高到100℃,加入10蒙脱土混炼10分钟,在开练机上加入4份过氧化异丙苯和2份三烯丙基异氰脲酸酯,混炼均匀后下片,在平板硫化仪上,于165℃下,硫化20mins,获得硫化氢化丁腈橡胶,进行性能测试。
实施例4
将100份氢化丁腈橡胶在开练机进行塑练后,加入到100℃密练机内,然后加入10份蒙脱土混炼十分钟;将初步混炼的橡胶放入60℃密炼机内,然后依次加入1份硬脂酸、17份氧化锌、1份防老剂、混炼一段时间待扭矩平稳5分钟后,缓慢滴加22份甲基丙烯酸,然后在开练机上加入4份过氧化异丙苯和2份三烯丙基异氰脲酸酯,混炼均匀后下片,在平板硫化仪上,于165℃下,硫化20mins,获得硫化氢化丁腈橡胶,进行性能测试。
实施例3和实施例4所制得的硫化橡胶的性能如下表1所示。
表1硫化橡胶的性能
Claims (8)
1.一种氢化丁腈复合材料,其特征在于按照质量份数计,各组分的配比:
氢化丁腈橡胶100份;
甲基丙烯酸20-25份;
蒙脱土8-10份;
氧化锌16-20份;
硬脂酸1-2份;
防老剂0.5-1.5份;
硫化剂4-8份;
硫化助剂1-2份。
2.根据权利要求1所述的氢化丁腈复合材料,其特征是:所述的氢化丁腈橡胶的氢化度大于99%,丙烯腈含量为43%,门尼粘度55-70,残余双键含量≤0.9。
3.根据权利要求1所述的氢化丁腈复合材料,其特征是:所述的氧化锌为纳米氧化锌,其平均粒径是9nm-10nm.比表面积是89m2/g-80m2/g。
4.根据权利要求1所述的氢化丁腈复合材料,其特征是:所述的硫化剂为过氧化物,特别是过氧化二异丙苯(BIPB),过氧化-2-乙基己基碳酸叔丁酯(TBEC)或者它们的混合物。
5.根据权利要求1所述的氢化丁腈复合材料,其特征是:所述的防老剂为N-环己基-N’-苯基对苯二胺和2-巯基苯并咪唑,比例为2∶1~1∶2之间。
6.根据权利要求1所述的氢化丁腈复合材料,其特征是:所述的硫化助剂为三烯丙基异氰脲酸酯。
7.一种氢化丁腈复合材料的制备方法,其特征在于将氢化丁腈橡胶在开练机进行塑练后,加入到60℃密练机内,然后依次加入硬脂酸、氧化锌、防老剂、混炼一段时间待扭矩平稳5分钟后,滴加甲基丙烯酸,然后将密炼机温度升高到100℃,加入蒙脱土混炼10分钟,获得I型混炼胶.将I型混炼胶在开练机混炼,然后加入硫化剂和硫化助剂,混炼均匀后下片,在平板硫化仪上,于165℃下,硫化20mins,获得硫化氢化丁腈橡胶,进行性能测试。
8.一种氢化丁腈复合材料的制备方法,其特征在于将氢化丁腈橡胶在开练机进行塑练后,加入到100℃密练机内,加入蒙脱土混炼10分钟;将初步混炼的橡胶放入60℃密炼机内,然后依次加入硬脂酸、氧化锌、防老剂、混炼一段时间待扭矩平稳5分钟后,滴加甲基丙烯酸,获得II型混炼胶,然后,将II混炼胶在开练机上加入硫化剂和硫化助剂,混炼均匀后下片,在平板硫化仪上,于165℃下,硫化20mins,获得硫化氢化丁腈橡胶,进行性能测试。
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