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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：天然橡胶手套废料与聚丙烯混合的再生橡胶，用于制备马来酸酐相容的热塑性硫化橡胶

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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：使用二苯基二硫化物作为脱硫助剂，通过热机械脱硫，从天然橡胶手套废料中回收橡胶。脱硫后，与未处理的橡胶废料相比，再生的橡胶具有更高的可溶性分数和更低的交联密度。然后通过Horikx方法分析了脱硫效率，发现在脱硫过程中，由于主链和交联断裂均发生了橡胶网络的随机断裂或非选择性断裂。在内部混合器中使用动态硫化技术制备了基于再生橡胶和聚丙烯共混物的热塑性硫化橡胶。马来酸酐在热塑性硫化橡胶中用作化学改性剂。还研究了马来酸酐负载量的影响。已经发现，随着马来酸酐含量的增加，热塑性硫化橡胶的机械和流变性能得到改善。此外，通过SEM形态学研究证实，马来酸酐含量的增加引起连续聚丙烯基质中球形分散的硫化橡胶区域的尺寸减小。发现80meq的马来酸酐含量是用于改善热塑性硫化橡胶的相相容性的最佳含量。

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