A strong three-dimensional curly memory fiber and its manufacturing method

Abstract

The invention relates to a powerful three-dimensional curly memory fiber and a manufacturing method thereof. Raw materials include: poly(1,4-cyclohexanedimethanol terephthalate) referred to as PCT; propylene glycol terephthalate referred to as PTT; blended and spun through melting and kneading. The invention uses the homogeneously dispersed and stable blend melt formed by melting and blending of polymers to carry out spinning, drawing and other processes to obtain three-dimensional short fibers with excellent curling and memory properties. On the one hand, it is because PCT itself has very good curling and compression recovery properties. In addition, under the synergistic effect of PTT’s high elastic properties, PCT is easier to form multiple and dense curls, and PTT also has excellent memory properties, which can lock Holds the formed curl and always maintains the original curl state.

Description

technical field [0001] The invention relates to fiber manufacturing, in particular to a novel three-dimensional crimped memory fiber and a manufacturing method thereof, belonging to the technical field of textiles. Background technique [0002] The curling effect of the three-dimensional crimped fibers that appear on the existing market is mainly formed by simple physical effects, and its fiber curl memory performance, crimp compression performance and crimp durability are poor, especially the compression recovery performance is worse; and During use, the curling performance will gradually decrease, and the effect of permanent curling will not be achieved. The original three-dimensional curly fiber adopts ordinary polyester raw materials and conventional staple fiber technology, and its molecular chain structure does not have the rigid and flexible "S" and "Z" structures. Therefore, when it is stretched or compressed, when the external force is removed Afterwards, it cannot...

AI Technical Summary

Problems solved by technology

This method is achieved by the different shrinkage rates of the two materials that are combined together. It is also a physical curl, rather than the intrinsic curl characteristics inherent in the molecular chain itself. Although it has good curl, its curl memory performance and curl compression Poor performance, especially compression recovery performance, high production cost

[0005] So far, there has not been a fiber with strong three-dimensional curl memory in the domestic market, which cannot meet the needs of people's living standards, and also restricts the development of textile fabrics, fur, carpets and other industries.