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首页> 外文期刊>Journal of Applied Polymer Science >Investigations of environmental stress cracking resistance of HDPE/EVA and LDPE/EVA blends
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Investigations of environmental stress cracking resistance of HDPE/EVA and LDPE/EVA blends

机译：HDPE / EVA和LDPE / EVA共混物耐环境应力开裂的研究

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摘要

HDPE/poly(ethylene-co-vinylacetate) (EVA) and low-density polyethylene (LDPE)/EVA blends were tested and compared with respect to their environmental stress cracking resistance (ESCR) using the Bell-telephone test. The time to failure in the ESCR test improves with increasing EVA content, and considerable improvements were produced for LDPE/EVA blends while small improvements were observed for HDPE/EVA blends. Thermal, rheological, mechanical, and morphological studies were conducted which established a quantitative relationship between morphological features and composition. Furthermore, the failed specimens were further characterized by scanning electron microscopy and fractographic methodology to investigate the failure mechanism for ESCR samples.
机译：测试了HDPE /聚（乙烯-共-乙烯基乙酸乙烯酯）（EVA）和低密度聚乙烯（LDPE）/ EVA共混物，并使用贝尔电话测试比较了它们的耐环境应力开裂性（ESCR）。 ESCR测试中的失效时间随着EVA含量的增加而改善，LDPE / EVA共混物产生了显着改善，而HDPE / EVA共混物则观察到了很小的改善。进行了热学，流变学，机械学和形态学研究，建立了形态学特征和组成之间的定量关系。此外，通过扫描电子显微镜和分形学方法进一步表征了失效的样品，以研究ESCR样品的失效机理。

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