A kind of dyeing method and product of ultra-high modulus polyethylene fiber

Abstract

The invention discloses a dyeing method of ultra-high modulus polyethylene fiber and its products. The dyeing method comprises the steps of: (1) adding 100 parts by weight of water-based hydroxyacrylate resin emulsion containing saturated long-chain alkyl acrylate, 0.1 -1 weight part of dyes containing hydroxyl and / or amino groups and 5-30 weight parts of isocyanate curing agent are mixed and stirred to form glue, and added to the glue tank of glue machine; (2) super high modulus polyethylene fiber or its products are processed After dipping and extruding the glue by the gluing machine, heat and cure at no more than 80°C to complete the coloring of ultra-high modulus polyethylene fiber or its products. The invention introduces long alkyl chains and dyes through chemical bonds to realize high-efficiency dyeing of UHMWPE, and the preparation process is easy to realize without affecting the performance of UHMWPE fibers.

Description

technical field [0001] The invention relates to the field of ultrahigh modulus polyethylene fiber dyeing, in particular to a method for dyeing ultrahigh modulus polyethylene fiber and a product thereof. Background technique [0002] Ultra-high molecular weight polyethylene (UHMWPE, or ultra-high modulus polyethylene) is polyethylene with a relative molecular weight greater than 1.5 million. Ultra-high modulus polyethylene has excellent functions such as wear resistance, excellent mechanical properties, corrosion resistance, no water absorption, and excellent impact resistance. However, due to the easy crystal orientation, symmetrical structure and inactive groups of the UHMWPE molecular structure, the surface of UHMWPE is extremely inert, the surface energy is extremely low, and the chemical activity is low, resulting in UHMWPE cannot be realized according to the traditional dyeing and finishing process. Effective staining. [0003] There are generally the following mainst...

AI Technical Summary

Problems solved by technology

[0007] The method of surface modification damages the mechanical properties of UHMWPE, and the process is complicated and the equipment cost is high

Although the process is convenient through the conventional dyeing method, the dyeing effect is not good due to the poor heat resistance of UHMWPE and the non-polar groups on the surface.

Dope dyeing or masterbatch preparation for melt spinning dyeing, the dyeing effect is good, but due to the low fastness of the combination between small molecule dyes and fiber molecules, it is easy to migrate to the fiber surface when flowing through the spinning port

Images