| Effect of MAH Modified Cashew Nut Shell Liquid on Properties of SBR |
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| DOI： |
| Key Words: SBR；CNSL；aromatic oil；maleic anhydride；graft-copolymerization；compatibilization |
| Author Name | Affiliation | | WANG Shu-ting | Guangdong University of Technology | | CHEN Fu-lin | Guangdong University of Technology | | GONG Zhan-lin | Guangdong University of Technology | | LIU Xuan | Guangdong University of Technology | | CEN Lan | Guangdong University of Technology | | ZHOU Yan-hao | Guangdong University of Technology |
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| Abstract: |
| A reactive plasticizer，M-CNSL(modified cashew nut shell liquid)，was prepared by graft-copolymerization of maleic anhydride and epoxy-cashew nut shell liquid copolymer，and the effects of M-CNSL on the properties of SBR，such as curing behavior，physical properties and resis-tance to hot aging were studied.Meanwhile，the result was compared with that of aromatic oil and unmodified-CNSL as plasticizer.The results showed that the plasticizing effect was in the descending order of CNSL，aromatic oil and M-CNSL.There was no significant difference in the hot aging resis-tance.With the addition of CNSL，the scorch time and curing time of SBR compound were prolonged，the hardness and modulus at 100% elongation of SBR vulcanizate decreased，and the elongation at break increased.Within 25 phr of plasticizer，the tensile strength and tearing strength of SBR vulcanizates showed peak values when the addition amount of CNSL or M-CNSL increased.However，the tensile strength and tearing strength of SBR vulcanizates containing aromatic oil decreased with the increase of addition level of aromatic oil. SEM photograph of the tensile fractured surface of SBR vulcanizates indicated that the silica dispersion was improved with M-CNSL as plasticizer. |
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