| 金属氧化物对甲基乙烯基硅橡胶胶料性能的影响 |
| Effects of Metal Oxides on Properties of MVQ Compounds |
| 投稿时间：2022-02-16 修订日期：2022-02-25 |
| DOI：10.12136/j.issn.1000-890X.2023.06.0432 |
| 中文关键词: 金属氧化物 甲基乙烯基硅橡胶 压缩永久变形 耐油性能 耐热性能 |
| 英文关键词: metal oxide MVQ compression set oil resistance heat resistance |
| 基金项目:国家自然科学基金资助项目(51972185) |
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| 中文摘要: |
| 研究金属氧化物MgO，ZnO，Fe2O3和Al2O3对甲基乙烯基硅橡胶（MVQ）胶料性能的影响。结果表明，金属氧化物种类对MVQ胶料的硫化特性和MVQ硫化胶的拉伸性能影响不大；加入MgO的MVQ硫化胶的压缩永久变形最小（6%），Fe2O3使MVQ硫化胶的压缩永久变形明显增大；加入ZnO和MgO的MVQ硫化胶的耐油性能较好；加入MgO降低了MVQ硫化胶的橡胶分子主链的分解速率，将分解温度提高至647 ℃；与空白样相比，加入MgO的MVQ硫化胶的最终分解温度上升40 ℃，耐热性能显著提高；加入MgO的MVQ胶料的综合性能最佳。 |
| 英文摘要: |
| Abstract：The effects of metal oxides MgO，ZnO，Fe2O3 and Al2O3 on the properties of the methyl
vinyl silicone rubber （MVQ） compounds were studied. The results showed that the types of metal oxides
had little effect on the vulcanization characteristics of the MVQ compounds and the tensile properties of
MVQ vulcanizates. The compression set of the MVQ vulcanizate with MgO was the lowest（6%），and the
compression set of the MVQ vulcanizate increased significantly with the addition of Fe2O3. The MVQ
vulcanizates with ZnO and MgO had better oil resistance. The decomposition rate of the main chain of the
rubber molecules of the MVQ vulcanizate with MgO was reduced，and the decomposition temperature increased
to 647 ℃ . Compared with the blank sample，the final decomposition temperature of the MVQ vulcanizate
with MgO increased by 40 ℃，and the heat resistance was significantly improved.The overall properties of the
MVQ compound with MgO were the best. |
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