摘要
以广东垦区农场多批次吨级鲜胶乳为载体,开展不同采收条件的天然橡胶鲜胶乳原料质量稳定性试验.结果表明:不同割胶季节、不同氨含量、不同(运输)保存时间,对鲜胶乳挥发脂肪酸值变化影响明显,8-10月胶乳高产期,气温高,酸值显著升高且鲜胶乳稳定性差;凝固后制得的生胶P0、PRI和门尼黏度三项性能指标以及物理机械性能拉伸强度、扯断伸长率、撕裂强度和邵尔A硬度均受到较明显的影响,与之变量成正或反比例关联关系;割胶年度中期的生胶性能指标较其它时期的优异.
Abstract
Using multiple batches of ton-level fresh rubber latex from farms in Guangdong reclamation area as the carriers,stability tests were conducted on the quality of raw materials for natural rubber under different harvesting conditions.The results showed that different tapping seasons,different ammonia content,and different(transportation)storage times had a significant impact on the volatile fatty acid value in fresh latex.During the high production period from August to October,with high temperatures,the acid value significantly increased and the stability of fresh latex was poor;The three performance indicators of P0,PRI,and Mooney viscosity of the raw rubber produced after solidification,as well as the physical and mechanical properties such as tensile strength,elongation at break,tear strength,and Shore A hardness,are significantly affected,and are positively or inversely proportional to their variables;The performance indicators of raw rubber in the middle of the rubber cutting year are relatively excellent.
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万方数据