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Effect of latex reclaim on physico-mechanical and thermal properties of carbon black filled natural rubber/butadiene rubber composite
Journal of Rubber Research ( IF 1.2 ) Pub Date : 2021-09-20 , DOI: 10.1007/s42464-021-00121-8
Vaishak Nambiathodi 1 , Siby Varghese 1 , Neethu Varghese 1
Affiliation  

As a material having high rubber content, latex reclaim (white reclaim) has been used in the production of premium grade rubber products like tyres, retreading materials, etc. Introduction of latex reclaim (LR) is also an ideal method to reduce the cost of rubber products. In the present work, natural rubber (NR), butadiene rubber (BR), and latex reclaim (LR) combinations were prepared to develop cost efficient tread materials. LR was mixed with NR/BR at various proportions to produce tread materials which will comply with national specifications. The blends were prepared and the cure and mechanical properties were investigated. Results have indicated that the scorch time and cure time had decreased with the increase of reclaim loading. The mechanical properties like tensile strength, tear strength, abrasion resistance decrease with the increase in the LR content. It was found that 70–80% of the mechanical properties were retained even after addition of 30 phr of LR. The thermal behaviour and activation energy of NR/BR/LR system was investigated using thermogravimetry TGA analysis and increased activation energy showed that the thermal stability has increased when the amount of LR is high. SEM studies had indicated the morphology change due to the viscosity mismatch between NR and BR especially in the presence of LR.



中文翻译:

胶乳再生对炭黑填充天然橡胶/顺丁橡胶复合材料物理力学和热学性能的影响

作为一种含胶量高的材料,乳胶再生料(白色再生料)已被用于生产优质橡胶制品,如轮胎、翻新材料等。引入乳胶再生料(LR)也是降低成本的理想方法。橡胶制品。在目前的工作中,制备了天然橡胶 (NR)、丁二烯橡胶 (BR) 和乳胶再生 (LR) 组合,以开发具有成本效益的胎面材料。LR 与 NR/BR 以不同比例混合,生产出符合国家规范的胎面材料。制备共混物并研究固化和机械性能。结果表明,焦烧时间和固化时间随着回收负荷的增加而减少。拉伸强度、撕裂强度等力学性能,耐磨性随着 LR 含量的增加而降低。结果发现,即使在添加 30 份 LR 后,仍保留了 70-80% 的机械性能。使用热重TGA分析研究了NR / BR / LR体系的热行为和活化能,增加的活化能表明当LR的量高时热稳定性增加。SEM 研究表明,由于 NR 和 BR 之间的粘度不匹配,特别是在 LR 存在下,形态发生了变化。使用热重TGA分析研究了NR / BR / LR体系的热行为和活化能,增加的活化能表明当LR的量高时热稳定性增加。SEM 研究表明,由于 NR 和 BR 之间的粘度不匹配,特别是在 LR 存在下,形态发生了变化。使用热重TGA分析研究了NR / BR / LR体系的热行为和活化能,增加的活化能表明当LR的量高时热稳定性增加。SEM 研究表明,由于 NR 和 BR 之间的粘度不匹配,特别是在 LR 存在下,形态发生了变化。

更新日期:2021-09-20
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