Preparation method for polyester fiber with compound ultraviolet ray resisting, aging resisting, moisture absorbing and quick drying functions

Abstract

The invention relates to a preparation method for a polyester fiber with compound ultraviolet ray resisting, aging resisting, moisture absorbing and quick drying functions. The method comprises an esterification reaction process, a polymerization reaction process and a spinning process in sequence, and comprises the following specific steps of: in an esterification reaction, introducing a third monomer with relatively large steric hindrance; after the esterification reaction and before a pre-polymerization reaction, adding titanium dioxide serving as a high-content delustering agent, a hindered amine light stabilizer and a hindered phenol antioxidant; after the pre-polymerization of polymerization reaction process and before final polymerization, adding an ultraviolet absorber; and beforethe spinning process, pre-crystallizing and drying polyester slices obtained in the polymerization reaction process, and designing a special-shaped section for the fiber. The polyester fiber obtainedby using the method has superior ultraviolet ray resisting, aging resisting, moisture absorbing and quick drying functions. As provided by testing, relevant technical indexes are that: the ultraviolet transmission is less than or equal to 5.0 percent, the wicking height is more than or equal to 120 millimeters, and the evaporation rate is more than or equal to 0.20g / hr after the polyester fiber is woven into a knitted fabric and a woven fabric.

Description

technical field [0001] The invention relates to a preparation method of polyester fiber, in particular to a preparation method of polyester fiber with anti-ultraviolet, anti-aging, moisture-absorbing and quick-drying composite functions. Background technique [0002] Since the advent of polyester fiber, it has been widely used in clothing textiles due to its good strength, excellent wrinkle resistance, drape performance and washable wearability. After decades of rapid development, PET polyester fiber has become the world's most It is the synthetic polyester variety with the largest output and widest application range. However, compared with various natural fibers, polyester fiber still has many shortcomings: hard hand feeling, poor hygroscopicity, poor UV resistance, easy to generate static electricity, easy to pilling, difficult to dye, etc. Although natural fibers such as cotton, silk, wool, hemp, etc. have good dyeing properties, fabrics have air permeability, good sweat...

AI Technical Summary

Problems solved by technology

However, compared with various natural fibers, polyester fiber still has many shortcomings: hard hand feeling, poor hygroscopicity, poor UV resistance, easy to generate static electricity, easy to pilling, difficult to dye, etc.

The disadvantage of this method is: benzotriazole is an organic phenolic compound, which exists as a protonic acid under high temperature conditions, which can destroy the inorganic nano-powder TiO 2 and Al 2 o 3 or SiO 2 Surface organic treatment agent, leading to the agglomeration of inorganic nanopowders in the pre-aggregation process

[0008] In summary, the existing technologies mainly rely on the huge specific surface area of ​​inorganic nanopowders to diffusely scatter ultraviolet rays to produce an anti-ultraviolet effect. The stability and efficiency of the anti-ultraviolet effect need to be improved, which requires an anti-ultraviolet mechanism Start to prepare polyester with better UV resistance and good spinnability

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