实验结果表明，TMA是研究和测试取向聚合物材料热收缩的简便有效方法。

The result shown that the TMA technique is an effective and convenient method for characterising thermal shrinkage in oriented polymer materials.

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该材料具有较好的物理机械性能，热收缩率达96 ~ 100%。

The materials have good physical and mechanical properties and 96-100% shrink ratio.

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利用口模拉伸工艺制备的取向聚乙烯的力学性能具有高度热敏感性，材料的热收缩率很高，且收缩时具有一定的收缩力。

The mechanical properties of such oriented PE were rather sensitive to the process temperature, and the thermal shrinkage of the material was also high.

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