| 不同结构氢化丁腈橡胶的性能研究 |
| Research on Properties of HNBR with Different Molecular Structure |
| 投稿时间：2021-01-15 修订日期：2021-01-15 |
| DOI：10.12136/j.issn.1000-890X.2021.08.0590 |
| 中文关键词: 氢化丁腈橡胶 氢化度 丙烯腈含量 混炼胶 硫化胶 物理性能 |
| 英文关键词: HNBR hydrogenation degree acrylonitrile content compound vulcanizate physical property |
| 基金项目: |
|
| 摘要点击次数: 820 |
| 全文下载次数: 1404 |
| 中文摘要: |
| 从氢化度和丙烯腈含量角度对不同结构氢化丁腈橡胶（HNBR）的性能进行研究。结果表明：在HNBR丙烯腈含量相同的条件下，随着HNBR氢化度的升高，填料的分散性降低，胶料的混炼升温速率减慢，流动性降低，硫化速率变慢，硫化胶的定伸应力下降，拉断伸长率提高，压缩永久变形增大，高氢化度HNBR硫化胶可采用二段硫化来提升耐压缩永久变形性能；在HNBR氢化度相同的条件下，随着HNBR丙烯腈含量的增大，填料的分散性提高，胶料的混炼能耗和排胶温度显著降低，流动性提高，焦烧时间延长，硫化胶的定伸应力和拉伸强度提高，拉断伸长率降低，耐油性能显著提高，压缩永久变形增大。 |
| 英文摘要: |
| The properties of hydrogenated nitrile butadiene rubber（HNBR） with different molecular
structures were studied in terms of hydrogenation degree and acrylonitrile content. The results showed
that under the same acrylonitrile content of HNBR，with the increase of hydrogenation degree of HNBR，
the dispersion of the filler was reduced，the heating rate of the compound in the mixing process was
slowed down，the flowability decreased，the curing rate became slower，the modulus of the vulcanizate
decreased，the elongation at break and compression set increased. The compression set resistance of high
hydrogenation degree HNBR vulcanizate could be improved by two stage vulcanization. Under the same
hydrogenation degree of HNBR，with the increase of acrylonitrile content of HNBR，the dispersion of the
filler was improved，the mixing energy consumption and discharge temperature of the compound decreased
significantly，the flowability increased，the scorch time was prolonged，the modulus and tensile strength of the
vulcanizate were improved，the elongation at break decreased，the oil resistance was improved significantly，
and the compression set increased. |
|
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
