论文部分内容阅读
天然橡胶(NR)在其加工过程中的性能通常是无法进行预测的。它是由流变性能的易变性引起的,流变性能的易变性由分子量(分布)、凝胶含量和非橡胶成分(蛋白质、长链脂肪酸酯、糖化物等)的含量所决定。本研究根据与加工性能有关的流变性能(门尼粘度、门尼松弛、华莱士塑性、PRI和RPA试验数据)对非洲和亚洲产的NR进行了对比,并研究了试验数据的相关性。当试验数据按照橡胶产地(较小的地理单位)进行划分时得到了理想的线性关系。特别是RPA与门尼粘度计的数据之间的关系具有较高的相关系数。
The performance of natural rubber (NR) during its processing is often unpredictable. It is caused by the variability of the rheological properties. The variability of the rheological properties is determined by the molecular weight (distribution), the gel content and the content of non-rubber components (proteins, long chain fatty acid esters, saccharides, etc.). In this study, NRs in Africa and Asia were compared based on rheological properties related to processability (Mooney viscosity, Mooney relaxation, Wallace plasticity, PRI and RPA test data) and the correlation of test data was studied . The ideal linear relationship was obtained when the experimental data were divided according to the rubber origin (smaller geographical unit). In particular, the relationship between RPA and Mooney viscometer data has a high correlation coefficient.