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首页> 外文期刊>Journal of Applied Polymer Science >Thermoplastic elastomers based on high-density polyethylene, ethylene-propylene-diene terpolymer, and ground tire rubber dynamically vulcanized with dicumyl peroxide
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Thermoplastic elastomers based on high-density polyethylene, ethylene-propylene-diene terpolymer, and ground tire rubber dynamically vulcanized with dicumyl peroxide

机译：基于高密度聚乙烯，乙烯-丙烯-二烯三元共聚物和过氧化二枯基动态硫化的磨碎轮胎橡胶的热塑性弹性体

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摘要

Thermoplastic vulcanizates (TPVs) based on high-density polyethylene (HDPE), ethylene-propylene-diene terpolymer (EPDM), and ground tire rubber (GTR) were dynamically vulcanized with dicumyl peroxide (DCP). The polymer blend was composed of 40% HDPE, 30% EPDM, and 30% GTR, and the concentration of DCP was varied from 0.3 to 3.6 parts per hundred rubber (phr). The properties of the TPVs were determined by evaluation of the gel fraction content and the mechanical properties. In addition, IR spectroscopy and differential scanning calorimetry analysis were performed as a function of the DCP content. Decreases in the Young's modulus of the blends and the crystallinity of HDPE were observed when the content of DCP was greater than 1.8 phr. The results regarding the gel content indicate that the presence of DCP promoted the crosslinking of the thermoplastic matrix, and optimal properties were obtained with 1.5% DCP.
机译：使用过氧化二枯基（DCP）对基于高密度聚乙烯（HDPE），乙烯-丙烯-二烯三元共聚物（EPDM）和磨碎的轮胎橡胶（GTR）的热塑性硫化橡胶（TPV）进行动态硫化。聚合物共混物由40％的HDPE，30％的EPDM和30％的GTR组成，并且DCP的浓度范围为每百份橡胶0.3到3.6份（phr）。通过评估凝胶分数含量和机械性能来确定TPV的性能。另外，根据DCP含量进行红外光谱和差示扫描量热分析。当DCP的含量大于1.8phr时，观察到共混物的杨氏模量和HDPE的结晶度降低。关于凝胶含量的结果表明，DCP的存在促进了热塑性基质的交联，并且使用1.5％DCP获得了最佳性能。

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