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An anti-ultraviolet TiO2 finishing liquid and anti-ultraviolet finishing method for aramid fiber

A finishing liquid, anti-ultraviolet technology, applied in fiber treatment, textile and papermaking, etc., can solve the problems of poor surface wettability, difficult dispersion of media, increase production cost, etc., achieve low cost, less colloidal particle agglomeration, and less pollution Effect

Inactive Publication Date: 2006-09-27
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the products of nano-titanium dioxide are mostly ultrafine particles or powders. Due to the polarity of ultrafine particles or powders and the miniaturization of particles, they have a large specific surface area and specific surface energy, are not easy to disperse in the medium, and are very easy to produce Agglomeration, so it needs to be surface modified or dispersed with a dispersant before application, which greatly increases the production cost
At the same time, due to the lack of chemically active groups on the smooth surface of aramid fibers, the surface wettability is also poor, resulting in weak binding force between the aramid fiber interface and traditional ultraviolet absorbers, so it is impossible to use traditional methods to treat aramid fibers, yarns or fabrics. Anti-UV finishing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Preparation of anti-ultraviolet finishing solution

[0031] Take 1 kg of butyl titanate and 0.75 kg of acetic acid, mix and stir evenly, add the obtained yellow transparent mixed solution to 7.5 kg of 1.0% hydrochloric acid solution dropwise at room temperature within half an hour and stir vigorously, then in 50 After stirring in a water bath for 30 minutes, transparent or translucent TiO can be obtained 2 Hydrosol.

[0032] (2) Anti-ultraviolet finishing of aramid fiber

[0033] Soak the aramid fiber in the anti-ultraviolet finishing solution for 15 minutes according to the bath ratio of 1:20, take it out, dry it at room temperature, and then dry it at 80° C. for 30 minutes.

Embodiment 2

[0035] (1) Preparation of anti-ultraviolet finishing solution

[0036] Take 1 kg of butyl titanate and 0.5 kg of acetic acid, mix and stir evenly, add the obtained yellow transparent mixed solution to 10 kg of 1.0% hydrochloric acid solution dropwise at room temperature within half an hour and stir vigorously, and then in 50 After stirring in a water bath for 30 minutes, transparent or translucent TiO can be obtained 2 Hydrosol.

[0037] (2) Anti-ultraviolet finishing of aramid yarn

[0038] The aramid yarn was dipped and rolled twice in the anti-ultraviolet finishing solution according to the bath ratio of 1:40, then dried at room temperature, and then dried at 100° C. for 30 minutes.

Embodiment 3

[0040] (1) Preparation of anti-ultraviolet finishing solution

[0041] Take 1 kg of butyl titanate and 0.5 kg of acetic acid, mix and stir evenly, add the obtained yellow transparent mixed solution to 10 kg of 1.0% hydrochloric acid solution dropwise at room temperature within half an hour and stir vigorously, and then in 50 After stirring in a water bath for 30 minutes, transparent or translucent TiO can be obtained 2 Hydrosol.

[0042] (2) Anti-ultraviolet finishing of aramid fabric

[0043] The aramid fabric was dipped twice in the anti-ultraviolet finishing solution according to the bath ratio of 1:40, and then dried at room temperature for 30 minutes at 120°C.

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PUM

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Abstract

This invention relates to a finishing liquid of titania resistance to ultraviolet, which is prepared by using sol-gel processing, selecting metatitanic acid esters as forerunner body and chlorhydric acid as catalyst. Then using dip-squeeze method, introuducing the finishing liquid of nanometer-grade titania resistance to ultraviolet on aramid fiber, yarn or fabric, simultaneity, utilizing the coupling property of metatitanic acid esters, enhancing the adhesive force of resistance to ultraviolet agent on aramid fiber, yarn or fabric, endowing them with excellent and lasting property of resistance to ultraviolet, making their ageing resistance increasing 75%. The finishing method of resistance to ultraviolet can't influence the physical and chemical property of aramid fiber, yarn or fabric, and their mechanical property also isn't damaged.

Description

[0001] Field [0002] The invention relates to an anti-ultraviolet finishing solution and its anti-ultraviolet finishing method for aramid fibers, in particular to a TiO 2 Anti-ultraviolet finishing solution and its anti-ultraviolet finishing method for aramid fiber. Background technique [0003] Aramid fiber was first developed by DuPont Company of the United States. It is an organic fiber composed of aromatic rings and amide bonds on the main chain of a macromolecule. Since it was applied to the solid motor shell of the U.S. nuclear submarine "Trident" C4 submarine-to-surface missile in the early 1970s, it has been widely used in the aerospace field due to its high specific modulus, high specific strength, fatigue resistance and other excellent properties. However, aramid fibers are prone to photoaging degradation under ultraviolet radiation, resulting in a gradual decline in the mechanical properties of the product, resulting in brittleness, cracking, and yellowing, or eve...

Claims

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Application Information

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IPC IPC(8): D06M11/46D06M23/00
Inventor 邢彦军丁辛
Owner DONGHUA UNIV
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