| 硫化剂DCP对NBR/木质素硫化胶性能的影响 |
| Effect of DCP on properties of NBR/lignin vulcanizate |
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| DOI： |
| 中文关键词: 硫化剂 NBR 木质素 硫黄 原位相容 |
| 英文关键词: lignin NBR curing agent sulfur in situ compatibilization |
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| 中文摘要: |
| 研究了用DCP作硫化剂时木质素的用量对NBR胶料硫化特性和硫化胶物理性能的影响，并与硫黄硫化体系进行了对比。试验结果表明，随着木质素用量的增大，NBR胶料的ML和MH增大,t10保持不变,t90有所延长；当木质素用量为50份时，NBR硫化胶的综合物理性能最佳，拉伸强度、定伸应力和撕裂强度均明显高于硫黄硫化胶。动态粘弹特性分析表明，木质素与NBR具有良好的相容性，DCP硫化胶的玻璃化转变温度比硫黄硫化胶约低4 ℃。综合性能分析认为，硫化剂DCP对NBR/木质素体系具有原位反应相容作用。 |
| 英文摘要: |
| The effect of lignin proportion on the curing behavior of NBR/lignin compound and the physical properties of vulcanizate was investigated by using DCP as curing agent and comparing with sulfur curing system.The test results showed that ML and MH of NBR/lignin compound increased，t10 kept unchanged and t90 lasted a little，as the lignin proportion increased；and the optimum comprehensive physical properties of vulcanizate were obtained，the tensile strength，modulus and tear strength were significantly better than those of sulfur-cured vulcanizate when 50 phr of lignin was used.It was found through the analysis of dynamic visco-elastic characteristics that the lignin had good compatibility to NBR，and the Tg of DCP cured NBR was about 4 ℃ lower than that of sulfur-cured NBR.It was considered through the analysis of comprehensive properties that DCP could initiate an in situ chemical reaction between NBR and lignin. |
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