ABSTRACT

This study investigated the effect of hybrid carbon black/lignin on the rheological, mechanical and thermal stability of NR/BR composites. Three types of lignin, namely, Kraft lignin (KL), organosolv lignin (OL) and soda lignin (SL) were incorporated into rubber matrix at the filler loadings of 5–20 phr, where the total filler content was fixed at 50 phr. Based on the performance of the three types of lignin, the KL and OL-filled NR/BR composites showed better properties compared to SL-filled NR/BR composite. However, the inclusion of KL up to a loading of 10 phr in the rubber matrix showed comparable results with those of the NR/BR/CB50 (without lignin). It was observed that the minimum and maximum torque (ML and MH, respectively) of the composite with KL were improved. Furthermore, the incorporation of lignin in the NR/BR matrix reduced the Payne effect and enhanced their processability, thermal stability and aging resistance.

摘要

本研究调查了杂化炭黑/木质素对 NR/BR 复合材料的流变、机械和热稳定性的影响。三种类型的木质素，即牛皮纸木质素 (KL)、有机溶剂木质素 (OL) 和苏打木质素 (SL)，以 5-20 份的填料量掺入橡胶基质中，其中填料的总含量固定为 50 份。基于三种木质素的性能，KL 和 OL 填充的 NR/BR 复合材料与 SL 填充的 NR/BR 复合材料相比表现出更好的性能。然而，在橡胶基质中加入 KL 至 10 phr 的结果与 NR/BR/CB50（不含木质素）的结果相当。据观察，具有 KL 的复合材料的最小和最大扭矩（分别为 ML 和 MH）得到了改善。此外，