| Preparation and Properties of Natural Rubber by Chemical Granulation |
| Received:August 23, 2015 Revised:August 23, 2015 |
| DOI： |
| Key Words: Natural Rubber; Chemical Granulation; Property |
| Author Name | Affiliation | E-mail | | JIANG Shi-kuan* | Yunnan Institute of Tropical Crops,666100 Jinghong,China | jiang0691@163.com | | ZHANG Gui-mei | Yunnan Institute of Tropical Crops,666100 Jinghong,China | | | ZOU Jian-yun | Yunnan Institute of Tropical Crops,666100 Jinghong,China | |
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| Abstract: |
| Natural Rubber was prepared by Chemical Granulation with Al2(SO4)2 as granulation agent, and the effects on granulation conditions have been investigated. The results showed that the optimum conditions were: the pH of natural rubber latex was 9.5～9.7, the quantity of Al2(SO4)2 was 4.0~4.4% and the mass concentration of Al2(SO4)2 was 10%. With concentration of natural rubber latex decreasing or the pH of that increasing,the quantity of Al2(SO4)2 should increased. Ash content, nitrogen content and Po of NR prepared by Chemical Granulation(NR-G) were all higher than that of acid coagulated natural rubber(NR-A), while PRI was lower. After being vulcanized,The tensile strength and stretching stres of NR-G was larger than that of NR-A. |
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