| Properties of SBR Powder Filled with Ultra-fine Calcium Carbonate and Its Vulcanizate |
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| DOI： |
| Key Words: SBR powder；encapsulant；ultra-fine calcium carbonate |
| Author Name | Affiliation | | Wang Lianshi | South China University of Science and Technology | | Wu Xiangdong | South China University of Science and Technology | | Jia Demin | South China University of Science and Technology | | Zheng Likai | South China University of Science and Technology |
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| Abstract: |
| The filled SBR powder was prepared by co-precipitation with polyelectrolyte as encapsulant，ultra-fine calcium carbonate as filler.The product with particle size ≤ O.9mm could be obtained under appropriate conditions.The vulcanizate of SBR powder showed good mechanical properties because of the reinforcement of encapsulant.It was showed by SEM that the ultra-fine calcium carbonate was present in the vulcanizate primarily in the form of primary and aggregated particules with the size of about O.05μm and 1μm
respectively.It was showed by DSC that Tg of SBR in the filled SBR powder and Tg of the
encapsulant crystal decreased as the level of the ultra-fine calcium carbonate increased. |
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