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首页> 外文期刊>Journal of Natural Rubber Research >Tearing of Unvulcanised Black-filled Natural Rubber
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Tearing of Unvulcanised Black-filled Natural Rubber

机译：未硫化的黑色填充天然橡胶的撕裂

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摘要

Tear behaviour of unvulcanised black-filled natural rubber (NR) was investigated by using trouser tear test-pieces. Although the unvulcanised rubber is easily deformable and flows under large deformation, it was found that tearing was not greatly affected by the lack of perfect elasticity of the rubber. Tearing energy of unvul-canised black-filled NR increases -with tear rate; this might indicate that tear behaviour is predominantly controlled by viscoelastic effects. Mooney viscosity of black-filledmasterbatches affect both the tearing energy and type of tear failures. High Mooney viscosity black masterbatches produce higher tearing energy than low Mooney viscosity masterbatches. The effect is more pronounced at low rates than at high rates of tearing. High Mooney viscosity masterbatches also produce small scale stick-slip tearing. The degree of stick-slip tearing is more pronounced at high rates than at low rates of tearing. Low Mooney viscosity black masterbatches produce steady tearing over all the range of tear rates investigated here.
机译：使用裤子撕裂试验片研究未硫化的黑色填充天然橡胶（NR）的撕裂行为。尽管未硫化的橡胶容易变形并且在大变形下流动，但是发现撕裂并没有受到橡胶的完美弹性的很大影响。未撕裂的黑色填充NR的撕裂能量随撕裂度而增加;这可能表明撕裂行为主要受粘弹性效应控制。黑色填充母料的门尼粘度会影响撕裂能量和撕裂失败的类型。高门尼粘度的黑色母料比低门尼粘度的母料产生更高的撕裂能量。低速撕裂比高速撕裂更明显。高门尼粘度母料还会产生小规模的粘滑撕裂。粘滑撕裂程度在高速率下比在低速率下更明显。低门尼粘度的黑色母料在本文研究的所有撕裂速率范围内均能产生稳定的撕裂性。

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