The Effect of Hot and Cold Rolling on the Properties of Poly(oxymethylene)
The Effect of Hot and Cold Rolling on the Properties of Poly(oxymethylene)
复制标题
热轧和冷轧对聚甲醛性能的影响
DOI：
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发表时间：
1975
期刊：
影响因子：
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通讯作者：
S. Bahadur
中科院分区：
文献类型：
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作者：
S. Bahadur
在环境温度以及 77 和 127°C 下，将聚甲醛进行单轴和双轴轧制以达到不同的厚度减少量。在室温条件下测量卷绕和展开材料的纵向和横向的拉伸性能。研究发现，由于轧制，材料的拉伸强度和伸长率在轧制方向上显着增加，而在横向上几乎没有或没有明显的影响。广角X射线衍射研究表明，轧制过程中材料的择优取向大部分发生在轧制方向，部分发生在横向。轧制温度似乎对择优取向和机械性能没有任何显着影响，但它对轧制引起的极限厚度减少有轻微影响。轧制引起的密度和机械性能的变化似乎与材料在轧制过程中发生的形态变化有关。
Poly(oxymethylene) was rolled uniaxially and biaxially to varying thickness reductions at ambient and 77 and 127°C. The tensile properties of the rolled and unrolled materials were measured both in the longitudinal and transverse directions under room temperature conditions. It is found that, as a result of rolling, the tensile strength and percent elongation of the material are considerably increased in the rolling direction, with little or no appreciable effect in the transverse direction. Wide-angle X-ray diffraction studies revealed that the preferred orientation of material during rolling takes place largely in the rolling direction and partially in the transverse direction. The rolling temperature does not seem to have any significant effect upon the preferred orientation and mechanical properties, but it affects slightly the limiting thickness reduction due to rolling. The changes in the density and mechanical properties resulting from rolling seem to be related to the morphological changes occurring in the material during the rolling process.