探讨了原丝预取向度、 拉伸温度以及拉伸速度对涤纶短纤维强度变异系数的影响。

The effects of grey yarn pre-orientation degree, drawing temperature and drawing speed on the strength variable coefficient of polyester staple fiber are studied.

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结果表明，预磁化有利于提高磁粉颗粒的取向度；

The experimental results show that the premagnetization of powder is beneficial to improving the orientation of ferrite particles.

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采用声速仪及X射线衍射仪对不同牵伸倍数和不同预氧化程度的PAN纤维进行取向度和预氧化程度的测试，并将其结果进行对比。

PAN fibers with different drawing ratio and different preoxidation degree were investigated by means of sound velocimeter and X-ray diffraction meter.

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