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A self-cleaning, wool-based technology, applied in the field of preparation of self-cleaning wool fabrics, can solve problems such as skin damage, and achieve the effects of enhancing bonding fastness, improving self-cleaning efficiency, and excellent quality
Inactive Publication Date: 2014-05-21
DONGHUA UNIV +2
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Problems solved by technology
TiO 2 Sol-finished fabrics require extremely harsh light intensity to trigger the photocatalytic reaction, but too strong light will damage the skin
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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Embodiment 1
[0035] A preparation method of self-cleaning wool fabric, the specific steps are:
[0036] (1) Preparation of TiO 2 / SiO 2 Mixed sol:
[0037] like figure 1 As shown, mix 8ml of tetraisopropyl titanate with a mass fraction of 97%, 4ml of diethanolamine and 24ml of absolute ethanol, stir at room temperature at a stirring speed of 800rmp for 1 hour, and then add 14ml of The volume fraction is 75% alcohol, stirred at room temperature for 1 hour to form a stable and transparent TiO 2 Sol; its concrete reaction is as follows:
[0038] 1) Hydrolysis reaction
[0039] Ti{OCH(C 2 h 3 ) 2} 4 +nH 2 O→Ti{OCH(C 2 h 3 ) 2} 4-n (OH) n +n(C 2 h 3 ) 2 CHOH(n=1,2,3,4)
[0040] 2) Polymerization reaction
[0041] {(C 2 h 3 ) 2 CHO} 3 Ti-OH+HO-Ti{OCH(C 2 h 3 ) 2} 3 →H 2 O+
[0042] {(C 2 h 3 ) 2 CHO} 3 Ti-O-Ti{OCH(C 2 h 3 ) 2} 3
[0043] {(C 2 h 3 ) 2 CHO} 3 Ti-OCH(C 2 h 3 ) 2 +HO-Ti{OCH(C 2 h 3 ) 2} 3 →
[0044] {(C 2 h 3 ) 2 CHO} 3 Ti-O-Ti{O...
Embodiment 2
[0061] (1) Preparation of TiO 2 / SiO 2 mixed sol
[0062] Mix 8ml of tetraisopropyl titanate with a mass fraction of 95%, 1.6ml of diethanolamine and 36ml of absolute ethanol and stir at room temperature at a stirring speed of 800rmp for one hour, and then add 14ml of 75% alcohol, stirred at room temperature for 1 hour to form a stable and transparent TiO 2 Sol; 4ml of concentrated ammonia water with a mass fraction of 28%, 25ml of ethanol, and 1.5ml of deionized water were mixed at room temperature at a stirring speed of 1100rmp for one hour, then quickly added a mixed solution of 2.25ml of tetraethyl orthosilicate and 25ml of ethanol, After 1 min, reduce the stirring speed to 400rmp, and continue the reaction at room temperature for 2 hours to form SiO 2 Sol; the TiO obtained by the above steps 2 Sol and SiO 2 Sol, according to the Ti / Si molar ratio of 3:7, mixed and stirred for 1 hour to obtain TiO 2 / SiO 2 Mixed sol.
[0063] (2) wool pretreatment
[0064] Will be...
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 provides a preparation method of a self-cleaning wool fabric. The preparation method is characterized by comprising the specific steps of mixing tetraisopropyl titanate, diethanol amine and absolute ethyl alcohol, adding alcohol, and stirring to form TiO2 sol; mixing concentrated ammonia, ethyl alcohol and deionized water, adding a mixed solution consisting of tetraethoxysilane and ethyl alcohol, performing reaction at room temperature for 1-3 hours to form SiO2 sol, and mixing the TiO2 sol and the SiO2 sol to obtain TiO2 / SiO2 mixed sol; removing impurities from the wool fabric, cleaning the wool fabric through a non-ionic washing agent, performing pre-oxidization, and treating the wool fabric through Savinase; immersing the treated wool fabric into the TiO2 / SiO2 mixed sol, and drying and curing after a two-immersion and two-rolling technology is performed; preparing an organosilane modified solution from long-chain alkylsilane, immersing the wool fabric into the organosilane modified solution, and naturally air-drying the wool fabric to obtain the self-cleaning wool fabric. According to the preparation method, the self-cleaning wool fabric has a good self-cleaning effect and a long-act effect. The preparation method is suitable for industrial production.
Description
technical field [0001] The invention relates to a method for preparing a self-cleaning wool fabric, which belongs to the field of finishing of textile fabrics. Background technique [0002] In daily life, clothes will inevitably be stained with oil, coffee, dust and other stains. These stains not only affect the normal use of clothes, but also provide a breeding environment for microorganisms. Therefore, with the acceleration of the pace of life and the pursuit of high-quality life, textiles with self-cleaning ability have emerged as the times require. [0003] At present, according to different mechanisms, there are mainly two ways to develop self-cleaning textiles: one is superhydrophobic surface finishing, and the other is photocatalytic finishing. [0004] Super-hydrophobic finishing simulates the lotus leaf effect to obtain a non-wetted fiber surface. Water droplets roll on the fiber surface to sweep away the dust and dirt, which belongs to bionic finishing. The main...
Claims
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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