随着共混物中弹性体质量分数的增加，共混物的拉伸强度和弹性模量降低，扯断伸长率增大。
With the increase of elastomer content, the tensile strength and elastic modulus of the blends decreased, while the elongation at break increased.
研究聚氯乙烯/氯化聚乙烯封套材料的性能，测试封套材料的透湿率、拉伸强度和扯断伸长率。
The properties of the PVC envelop material modified by CPE was investigated, and the moisture permeability, tensile strength and elongation at break were also tested.
试验结果表明，加入湿法白炭黑超细粉的试样拉伸强度比添加气相法白炭黑者提高了54%，扯断伸长率提高了64%，磨耗量降低了20%。
The results showed that the sample by adding the ultrafine powders of silica aerogel increased the tensile strength 54%, the elongation at break 64%, decreased the abrasion loss 20%.
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