聚对苯二甲酸乙二醇酯片基,其机械强度大,在各种温、湿度下伸缩小,尺寸精度高。因而在许多领域得到广泛应用。聚酯片基约在26年前开始用作照相支持体,与三醋酸纤维素片基并用。那时,人们对聚酯片基的化学稳定性进行了研究,确认了聚对苯二甲酸乙二醇酯是一种化学性能稳定的塑料。然而,摄影工作者重视的并非只是照相支持俸的稳定性,而是涂布了乳剂 Polyethylene terephthalate film base, its mechanical strength, in a variety of temperature and humidity telescopic small, high dimensional accuracy. Therefore, it has been widely used in many fields. Polyester sheeting began to be used as a photographic support about 26 years ago, in combination with triacetyl cellulose sheet. At that time, the chemical stability of the polyester base was studied and confirmed that polyethylene terephthalate is a chemically stable plastic. However, instead of focusing solely on the stability of photographic support, photographers value the emulsion