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橡塑比對EPDM/PA6熱塑性動態硫化橡膠的性能影響研究

作者：鄧權桉，等

中國分類號：TQ330.67

文獻標識碼：B

文章標識碼：1009-797X(2024)04-0014-04

關鍵詞：動態硫化；橡塑比；擠出成型；熱塑性硫化橡膠

 附件下載  在線閱讀

摘要

采用動態硫化法擠出成型制備共混型三元乙丙橡膠（EPDM）/尼龍6（PA6）熱塑性動態硫化橡膠（TPV），對不同比例的EPDM/PA6共混物進行了研究。結果表明：脆斷微觀形貌分析，四組橡塑比均形成了“海島”結構，其中橡塑比為70/30的橡膠微粒尺寸和分散狀態更均勻。加工流變性分析，橡塑比為70/30的扭矩有最小值；隨橡塑比的增大，拉伸強度和斷裂伸長率先上升后下降，分別在EPDM/PA6為60/40和70/30時達到最大值。從降低成本考慮，選用橡塑比為70/30的為宜。

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