PTT纤维兼有涤纶和锦纶的特点，既易洗快干、弹性回复性好，又具有较好的耐磨性和拉伸回复性，更适合制作复合纤维、弹力织物、地毯等材料。PBT纤维除了具有涤纶的优点外，还具有更好的染色性能，已成为合成纤维领域具有发展前途的差别化纤维之一，另外，还具有较好的抗老化性、耐化学反应性和耐热性，从而使其广泛用于工程塑料、家电外壳等领域。这两种新型聚酯纤维的出现，不仅打破了涤纶纤维一家独大的局面，甚至可能在一定范围内取而代之。
PTT fiber has the characteristics of both polyester and nylon. It is easy to wash and dry, has good elastic recovery, and has good wear resistance and tensile recovery. It is more suitable for making composite fibers, elastic fabrics, carpets and other materials. PBT fibers not only have the advantages of polyester, but also have better dyeing properties. PBT fibers have become one of the differentiated fibers with a promising future in the field of synthetic fibers. In addition, PBT fibers also have good aging resistance, chemical reaction resistance and heat resistance, which make them widely used in engineering plastics, household appliances and other fields. The emergence of these two new types of polyester fibers has not only broken the dominant situation of polyester fibers, but may even be replaced within a certain range.