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首页> 外文期刊>Journal of Applied Polymer Science >Modified ethylene-propylene-diene elastomer (EPDM)-contained silicone rubber/ethylene-propylene-diene elastomer (EPDM) blends: Effect of composition and electron beam crosslinking on mechanical, heat shrinkability, electrical, and morphological properties
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Modified ethylene-propylene-diene elastomer (EPDM)-contained silicone rubber/ethylene-propylene-diene elastomer (EPDM) blends: Effect of composition and electron beam crosslinking on mechanical, heat shrinkability, electrical, and morphological properties

机译：改性乙烯 - 丙烯 - 二烯弹性体（EPDM） - 硅橡胶/乙烯 - 丙烯 - 二烯弹性体（EPDM）共混物：组合物和电子束交联对机械，热收缩性，电气和形态学性质的影响

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In this investigation, a gamma radiation-induced methacrylic acid (MAA)-grafted ethylene-propylene-diene elastomer (EPDM) was used as a third component (g-EPDM) in silicone rubber (SiR)/ethylene-propylene-diene elastomer (EPDM) blends. These blends were electron beam (EB) crosslinked. The effect of blend composition, the presence of g-EPDM, and EB crosslinking on the mechanical, heat shrinkability, electrical, and morphological properties of SiR/EPDM blends have been studied. To investigate the effect of grafted EPDM (g-EPDM), 10 wt % of g-EPDM was added to immiscible SiR/EPDM blends. Both silicone and EPDM are blended in different proportions (70:30 and 30:70) with and without g-EPDM followed by compression molding. To improve the properties and investigate the crosslinkability of binary and ternary blends further, the SiR/EPDM blends were irradiated by electron beam at different doses (50, 100, and 150kGy). The gel content was found to increase with EPDM content, the presence of g-EPDM, and radiation dose. The addition of g-EPDM led to improvement of tensile properties (tensile strength, Young's modulus, percentage elongation, and toughness), electrical properties, and shrinkability of blends. EB crosslinking further enhanced the above properties. Surface morphology (SEM) revealed that the presence of g-EPDM and the incorporation of EB crosslinking improved the above properties of blends. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47787.
机译：在该研究中，伽马辐射诱发的甲基丙烯酸（MAA） - 接枝的乙烯 - 丙烯 - 二烯弹性体（EPDM）用作在硅橡胶的第三组分（g-EPDM）（SIR）/乙烯 - 丙烯 - 二烯弹性体（ EPDM）共混物。这些共混物是电子束（EB）进行交联。共混物组合物，G-EPDM的存在，和EB交联的对机械，热收缩性，电气，和SiR的形态性质的影响/ EPDM共混物进行了研究。为了研究接枝EPDM（G-EPDM）的效果，G-EPDM的10％（重量）加入到不混溶的SIR / EPDM共混物。两个硅树脂和EPDM共混不同比例（70:30和30:70）具有和不具有G-EPDM，接着通过压缩模制。为了提高性能和进一步调查的二元和三元共混物的交联反应中，先生/ EPDM共混物通过以不同剂量（50，100，和150kGy）照射电子束。凝胶含量被发现增加与EPDM含量，G-EPDM的存在，和辐射剂量。加入G-EPDM的导致改善的拉伸性能（拉伸强度，杨氏模量，延伸率，和韧性），电性能，和共混物的收缩性。 EB交联进一步提高上述性能。表面形态（SEM）表明，G-EPDM的存在和交联EB的掺入改善了共混物的上述性能。 （c）2019 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019年，136，47787。

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