| Effect of DCP on properties of NBR/lignin vulcanizate |
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| DOI： |
| Key Words: lignin；NBR；curing agent；sulfur；in situ compatibilization |
| Author Name | Affiliation | | LYU Xiao-jing | South China University of Technology | | YANGJun | South China University of Technology | | WANG Di-zhen | South China University of Technology |
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| Abstract: |
| 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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