...）为原料，采用挤出吹塑工艺生产的220升双L环塑料桶，具有优异的机械强度、优良的抗冲击性能及良好的耐环境应力开裂性能（ESCR），特别适应于液体类危险化工产品的包装及运输，因而国际上普通采用220升双L环桶包装危险品。
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实验结果表明：少量的NBR能大幅度提高HDPE的冲击韧性和耐环境应力开裂性能。
The results show that a small amount of NBR can greatly improve the environmental stress crack resistance(ESCR) and the impact strength of HDPE.
首先，PP发泡材料的成本较低，韧性、刚性、耐疲劳性和耐环境应力开裂性等性能都很好。
Firstly, PP foam has low cost, high elasticity, rigidity. It is durable and performs well under environmental pressure.
聚乙烯电缆护套料的重要性能之一是耐环境应力开裂(ESCR)性能，普通的LDPE树脂不能满足要求。
One of the important performances of polyethylene cable jacket materials is environmental stress-crack resistance, while general-purpose LDPE resin cannot meet all kinds of demands.
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