用放大实验制得了PEN-PET共聚酯,通过双轴拉伸制成薄膜,对薄膜的干热收缩率、声速取向因子和力学性能进行了研究,同时研究了萘二甲酰含量、拉伸工艺等的影响规律.结果表明,随着PEN含量的增加,共聚酯薄膜的干热收缩率降低,声速取向因子增大,断裂伸长率减小.
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