Preparation method of colored polyethylene fiber with ultrahigh relative molecular mass

Abstract

The invention relates to a preparation method of a colored polyethylene fiber with ultrahigh relative molecular mass. The preparation method comprises the following steps: mixing dye or pigment powder with a solvent and stirring, while carrying out ultrasonic vibration to obtain uniform dyed bath liquid; (2) extracting and drying UHMWPE (Ultrahigh Molecular Weight Polyethylene) jelly fiber, and winding the fiber to obtain dried UHMWPE jelly fiber; (3) placing the dried UHMWPE jelly fiber to the dyed bath liquid which is obtained in the step (1) to carry out ultrasonic vibration for 10-50 min, taking out and drying the fiber to obtain colored dried UHMWPE jelly fiber; (4) carrying out multistage thermal stretch and winding the colored dried UHMWPE jelly fiber to obtain the colored UHMWPE fiber. The technical process is simple, low in production cost, easy to realize industrial production, wide in selection of dye or pigment powder, will not influence the original excellent mechanical property of the UHMWPE fiber, and is suitable for the fields with the color requirement such as civil use, military use and national defense.

Description

technical field

[0001] The invention belongs to the field of preparation of colored fibers, in particular to a method for preparing colored ultra-high molecular weight polyethylene (UHMWPE) fibers. Background technique

[0002] UHMWPE fiber is the third generation of high-performance special fiber after carbon fiber and aramid fiber. Because of its high molecular weight, good main chain combination, high degree of orientation and crystallinity, and the highest strength of all new chemical fiber materials today, it is used in the military industry. It plays an irreplaceable role in the field of aviation and aerospace. In addition to playing an extremely important role in military, national defense and other fields, UHMWPE fibers have also been widely used in civilian fields. With the expansion of the application of UHMWPE fiber in marine engineering and fishery fields, the demand for colored UHMWPE fiber is increasing.

[0003] Patent CN103074786A discloses a method for dye...