Method for preparing polyester fiber having compound functions of pilling resistance, ageing resistance and normal-pressure cationic dyeability

Abstract

The invention relates to a method for preparing a polyester fiber having compound functions of pilling resistance, ageing resistance and normal-pressure cationic dyeability, comprising a primary esterification reaction step, an ester exchange reaction step, a secondary esterification reaction step and a polymerization reaction step, wherein three monomers are added in the ester exchange reaction step; a hindered amine light stabilizer and a hindered phenol antioxidant as well as hydroxyl silicone oil are added after the secondary esterification reaction and a pre-polymerization reaction; and pre-crystallization and drying are performed on polyester slices before a spinning step. Fabrics made of the polyester fibers of the invention are good in pilling resistance and good in light fastness, and can be dyed into various beautiful colors by means of the normal-pressure cationic dyeability of the fibers, thereby meeting the uniform requirements of the present high-grade spring-summer dresses for functionality and colors; the obtained polyester fibers also can be subjected to apposition dyeing with wool; and as being blended with wool, good dressing effect can be obtained. The polyester fiber of the invention is an important supplement for the cationic dyeable polyester market at present in China.

Description

technical field

[0001] The present invention relates to a preparation method of polyester fiber, in particular to a preparation method of polyester fiber with anti-pilling, anti-aging, normal-pressure cationic dyeable composite functions. Background technique

[0002] In recent years, with the rapid development of domestic polymerization technology, my country's functional polyester synthesis technology has made great progress. Domestic cationic dyeable polyester has formed a scale of nearly 400,000 tons, and its differentiated varieties emerge in endlessly. There is a momentum of booming production and sales, but we should also see that there is a considerable gap between my country's cationic polyester synthesis technology and application range and developed countries. The main application fields of my country's cationic dyeable polyester fibers are decorative fabrics and fabrics. Garment moldings, which have a great distance from the original intention of the developmen...

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