| Preparation of fine lignin and its reinforcing effect on NBR |
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| DOI： |
| Key Words: NBR；lignin；reinforcement；mechanical properties |
| Author Name | Affiliation | | ZHONG Han-quan | Jinan University | | WANG Di-zhen | South China University of Technology | | YANG Jun | South China University of Technology | | LUO Dong-shan | South China University of Technology |
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| Abstract: |
| A fine lignin was prepared and its reinforcing effect on NBR was investigated.The results showed that the pH value of the acidified black liquid，the dehydration temperature and the swift of the lignin eluted from the black liquid/sulfur acid mixture were the main effective factors on the particle size of lignin；the smaller the size of lignin particle，the better the reinforcing effect on NBR；the tensile strength，tear strength and elongation at break of NBR vulcanizate reached 20 MPa，42 kN·m-1 and 730% respectively by adding 36 phr of lignin with surface area of 43.5 m2·g-1 and particle size of 100～300 nm and were significantly superior to those by adding semi-reinforcing carbon black. |
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