High-hydroscopicity modified polyester fiber cotton sliver and preparation method and application thereof

Abstract

The invention discloses a high-hydroscopicity modified polyester fiber cotton sliver and a preparation method and the application thereof. Sepiolite fiber with rapid moisture absorption and a releaseproperty is introduced into polyester fiber to improve the water absorption effect of the polyester fiber; then the polyester fiber is washed with alkali to increase the surface roughness of the fiber, thereby lowering the surface tension during moisture absorption and achieving a rapid water absorption effect; furthermore, holes and trenches which are used for communicating the inside with the outside are produced by etching the surface of the fiber form communicated pores, so that the moisture is easy to absorb and discharge; then, a hydrophilic polyvinyl alcohol membrane covers the surfaceof a fiber bundle, so that the hydrophilcity is higher, which contributes to migration of the moisture from the surface of the fiber to the inside of the fiber; moreover, the reduction of the water absorption effect due to the fact that solid particles in a coating block the pore structure on the surface of the fiber can be prevented. The modified polyester fiber cotton sliver disclosed by the invention can be applied to a paint roller brush, so that the absorption amount of a coating such as paint is increased; furthermore, the cotton silver can be repeatedly used after being used and then cleaned, so that the waste of resources is reduced.

Description

technical field

[0001] The invention relates to the technical field of polyester fiber preparation, in particular to a highly water-absorbent modified polyester fiber sliver and its preparation method and application. Background technique

[0002] Polyester fiber is currently the most widely used variety in synthetic fibers. However, due to the regular arrangement of the molecular structure of polyester itself, high crystallinity and large modulus, and the lack of polar functional groups in polyester molecules, the hygroscopicity is very poor. The moisture regain of the lower fiber is only 0.4%, which restricts the application of polyester fiber in many occasions.

[0003] At present, in the research on the modification of polyester fibers at home and abroad, more and more attention has been paid to the development of hygroscopic polyester fibers, and there are many ways to make polyester fibers hydrophilic. It is mainly modified in the two processes of spinning and finishi...