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Silica nanoscale hybridized sol thermochromatic finishing method for fabric

A technology of silica and thermochromism, which is applied in fiber treatment, textiles and papermaking, natural fibers, etc., can solve the problems of uneven dispersion of microcapsules, achieve good application prospects, overcome uneven dispersion, and improve flexibility Effect

Inactive Publication Date: 2013-12-11
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a thermochromic finishing method of silica nano-hybrid sol, which does not require the assistance of adhesives during the finishing process, and reduces the impact of thermochromic finishing on fabric strength and hand feeling. It overcomes the disadvantage of uneven dispersion of microcapsules on the fabric surface during traditional thermochromic finishing, and has a good application prospect

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Silica nanoscale hybridized sol thermochromatic finishing method for fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Preparation of finishing solution

[0032] At room temperature, dissolve tetraethyl orthosilicate and silane coupling agent KH-560 in absolute ethanol, stir on a magnetic stirrer for 30 minutes to mix evenly, add 1 / 8 of the amount of deionized water under stirring , continue to stir for 15 minutes to form A solution; mix another 7 / 8 of the amount of deionized water and hydrochloric acid to form B solution; slowly add B solution to A solution under rapid stirring to adjust pH = 2, continue Stir for 2.5h to obtain transparent nano-SiO 2 sol, and then slowly add 30 g of triarylmethane phthalide thermochromic materials, and stir for 30 hours to obtain a hybrid nano-silica sol. The molar ratio of tetraethyl orthosilicate, silane coupling agent, ethanol and water is as follows: 1:1.5:24:40; the mass ratio of thermochromic material to silica sol is 1:10.

[0033] (2) Thermochromic finishing

[0034] Immerse cotton poplin 4040×3372 in the above-mentioned sol finishing so...

Embodiment 2

[0038] (1) Preparation of finishing solution

[0039]At room temperature, dissolve tetraethyl orthosilicate and silane coupling agent KH-560 in absolute ethanol, stir on a magnetic stirrer for 30 minutes to mix evenly, add 1 / 8 of the amount of deionized water under stirring , continue to stir for 15 minutes to form A solution; mix another 7 / 8 of the amount of deionized water and sulfuric acid to form B solution; slowly add B solution to A solution under rapid stirring to adjust pH = 3, continue Stir for 2.5h to obtain transparent nano-SiO 2 sol, and then slowly add 30 g of triarylmethane phthalide thermochromic materials, and stir for 30 hours to obtain a hybrid nano-silica sol. The molar ratio of tetraethyl orthosilicate, silane coupling agent, ethanol and water is as follows: 1:2:30:40; the mass ratio of thermochromic material to silica sol is 1:30.

[0040] (2) Thermochromic finishing

[0041] Immerse cotton poplin 4040×3372 in the above-mentioned sol finishing solution ...

Embodiment 3

[0045] (1) Preparation of finishing solution

[0046] At room temperature, dissolve tetraethyl orthosilicate and silane coupling agent KH-560 in absolute ethanol, stir on a magnetic stirrer for 30 minutes to mix evenly, add 1 / 8 of the amount of deionized water under stirring , continue to stir for 15 minutes to form A solution; mix another 7 / 8 of the amount of deionized water and acetic acid to form B solution; slowly add B solution to A solution under rapid stirring to adjust pH = 2, continue Stir for 2.5h to obtain transparent nano-SiO 2 sol, and then slowly add 30 g of triarylmethane phthalide thermochromic materials, and stir for 30 hours to obtain a hybrid nano-silica sol. The molar ratio of tetraethylorthosilicate, silane coupling agent, ethanol and water is as follows: 1:2:30:40; the mass ratio of thermochromic material to silica sol is 1:35.

[0047] (2) Thermochromic finishing

[0048] Immerse cotton poplin 4040×3372 in the above-mentioned sol finishing solution fo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to a silica nanoscale hybridized sol thermochromatic finishing method for a fabric. The silica nanoscale hybridized sol thermochromatic finishing method for a fabric comprises the following steps of 1, mixing tetraethyl orthosilicate, a silane coupling agent and alcohol at room temperature, stirring uniformly, adding water and an acid into the mixture to adjust a pH value of the mixture to a pH value of 2 to 3, and stirring to obtain SiO2 sol, wherein a mol ratio of the tetraethyl orthosilicate to the silane coupling agent to the alcohol to the water is 1: (0.1 to 2): (10 to 30): (8 to 40), and 2, dipping a fabric into the sol finishing solution obtained by the step 1, and carrying out pre-drying and drying to obtain a thermochromatic cotton fabric. The silica nanoscale hybridized sol thermochromatic finishing method for a fabric does not need an adhesive as an auxiliary agent during finishing, reduces the influences of thermochromatic finishing on the strength and the handle of a fabric, overcomes the defects of non-uniform distribution of microcapsules on a fabric surface in traditional thermochromatic finishing processes, and has good application prospects.

Description

technical field [0001] The invention belongs to the field of thermochromic finishing, in particular to a method for thermochromic finishing of fabrics with silicon dioxide nano-hybrid sol. Background technique [0002] Silica sol is one of the most important colloidal materials in the sol-gel process. It refers to a colloidal solution formed by uniformly dispersing 1-100nm silica colloid particles in a liquid medium. In the chemical industry, silica sol, also known as silicic acid sol, is a white or slightly blue opalescent colloidal solution. Because its main component is colloidal silica, it is chemically inert, odorless, tasteless, Non-toxic, non-corrosive, its molecular formula is mSiO 2 ·nH 2 O, Si 2 O is uniformly dispersed in water or organic solvents in the form of micelles, and its appearance is mostly milky white or light blue transparent solution. At present, the applications of silica sol textiles are mainly antibacterial coating finishing, slow-release aroma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/79D06M13/513D06M13/228D06M101/02D06M101/16
Inventor 赵曙辉方熙曾宇迪罗光元荣海琴
Owner DONGHUA UNIV
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