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首页> 外文期刊>Journal of Polymers and the Environment >Recycled Rubber from Waste of Natural Rubber Gloves Blending with Polypropylene for Preparation of Thermoplastic Vulcanizates Compatibilized by Maleic Anhydride
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Recycled Rubber from Waste of Natural Rubber Gloves Blending with Polypropylene for Preparation of Thermoplastic Vulcanizates Compatibilized by Maleic Anhydride

机译：从浪费自然橡胶手套与聚丙烯混合的再生橡胶，用于制备由马来酸酐相容的热塑性硫化酸盐

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Recycled rubber from waste of natural rubber gloves was prepared via thermo-mechanical de-vulcanization using diphenyl disulfide as a de-vulcanizing aid. After de-vulcanization, the recycled rubber has a higher soluble fraction and a lower cross-link density than that of untreated rubber waste. The de-vulcanization efficiency was then analyzed by Horikx's method and it was found that random scission or non-selective breakdown of the rubber network, due to both main chain and cross-link scission had occurred during de-vulcanization. Thermoplastic vulcanizates based on recycled rubber and polypropylene blends were prepared using the dynamic vulcanization technique in an internal mixer. Maleic anhydride was used as a chemical modifier in the thermoplastic vulcanizates. The effect of the maleic anhydride loading level was also studied. It was found that the mechanical and rheological properties of the thermoplastic vulcanizates improved with an increasing maleic anhydride content. Furthermore, it was confirmed by SEM morphological investigation that an increasing maleic anhydride content caused a decrease in the size of the spherical dispersed vulcanized rubber domains in the continuous polypropylene matrix. A maleic anhydride content of 80meq was found to be the optimum content for the improvement of the phase compatibility of the thermoplastic vulcanizates.
机译：通过使用二苯基二硫化物作为脱硫助剂，通过热机械脱硫制备来自浪费天然橡胶手套的再生橡胶。在去硫化之后，再生橡胶具有比未处理的橡胶废物更高的可溶性级分和较低的交联密度。然后通过Horikx的方法分析了去硫化效率，并发现橡胶网络的随机群或非选择性分解，由于在去硫化期间发生了主要链和交联群。使用内部混合器中的动态硫化技术制备基于再循环橡胶和聚丙烯共混物的热塑性硫化橡胶。马来酸酐用作热塑性硫化橡胶中的化学改性剂。还研究了马来酸酐负载水平的影响。发现热塑性硫化橡胶的机械和流变性质随着马来酸酐含量的增加而改善。此外，通过SEM形态调查证实，即增加的马来酸酐含量导致连续聚丙烯基质中的球形分散硫化橡胶结构域的尺寸减小。发现80MEQ的马来酸酐含量是改善热塑性硫化酸盐的相位相容性的最佳含量。

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