Preparation method of nano-modified fluorine-containing textile finishing agent
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A fluorine-containing fabric, nano-modified technology, applied in fiber processing, textile and papermaking, liquid repellent fibers, etc., can solve problems such as increased residues and decreased monomer conversion rate
Active Publication Date: 2018-02-16
ANHUI LINGDA CHEM TECH
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But in-situ polymerization in emulsion polymerization, due to the action of nanoparticles, it is easy to increase the amou
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Embodiment 1
[0041] ⑴ Organic fluorine and epoxy modified nano-Si0 2 Water dispersion preparation (each raw material is by weight):
[0042] In a reactor equipped with a stirrer, a condenser, and a thermometer, add 100 parts of deionized water, 0.036 parts of sodium dodecylbenzenesulfonate, and 0.018 parts of perfluorinated mixed alkyl ethyl polyoxyethylene ether, stir to dissolve, Control the temperature at 20-40°C, add 3 parts of methyltrimethoxysilane while stirring, stir at high speed for 1.0-1.5 hours, add 2.5 parts of 25% ammonia water dropwise, and keep stirring for 3 hours; then add tetraethyl orthosilicate 2 part, stirred for 2 hours; then added 0.2 part of γ-(2,3-epoxypropoxy)propyltrimethoxysilane, stirred for 20-30 minutes; added 0.01 part of perfluoroalkyl ethyl polyoxyethylene ether, drop Add 1.0 part of perfluorinated mixed alkyl ethyl trimethoxysilane, continue to stir for 4 hours, then add 0.02 part of perfluoro mixed alkyl ethyl polyoxyethylene ether, heat up and dehydra...
Embodiment 2
[0060] Organofluorine and epoxy-modified nano-SiO2 water dispersion liquid preparation (each raw material is by weight):
[0061] In Example 1, 0.2 parts of γ-(2,3-epoxypropoxy)propyltrimethoxysilane were replaced by 0.3 parts, and 1.0 parts of perfluoro mixed alkyl ethyl trimethoxysilane were replaced by perfluorohexyl 1.0 parts of ethyl trimethoxysilane;
[0062] Preparation of acrylate copolymer emulsion modified by organic fluorine with low carbon chain content (each raw material is by weight):
[0063] In Example 1, 1.5 parts of acetoacetoxyethyl methacrylate in the shell monomer pre-emulsion 2 was replaced by 1.0 parts, and 1.5 parts of methacryloxypropyl triisopropoxysilane was replaced by vinyl 2.5 parts of triisopropoxysilane, 0.7 parts of adipic acid dihydrazide replaced with 0.53 parts;
[0064] The composition of other raw materials and the preparation process were the same as in Example 1 to obtain the nano-modified fluorine-containing fabric finishing agent of ...
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Abstract
The invention discloses a preparation method of a nano-modified fluorine-containing textile finishing agent, comprising the following steps: preparing an organic fluorine and epoxy modified nano-SiO2aqueous dispersion and preparing a short-carbon-chain low-content organic fluorine modified acrylate copolymer emulsion, and then compounding the two components according to a certain ratio to obtainthe nano-modified fluorine-containing textile finishing agent. The preparation method has the following advantages: as the organic fluorine and epoxy modified nano-SiO2 aqueous dispersion simultaneously provides micro-roughness and low surface tension in the finishing agent and the short-carbon-chain low-content organic fluorine modified acrylate copolymer emulsion provides good adhesion to a substrate, the nano-modified fluorine-containing textile finishing agent maintains water and oil repellency required by textiles, the total amount of organic fluorine is reduced, the cost of raw materialsis lowered, fluorine resources are saved, and durability is improved.
Description
technical field [0001] The invention relates to the field of fabric finishing auxiliaries, in particular to a preparation method of a nano-modified fluorine-containing fabric finishing agent. Background technique [0002] Nano-modified fluorine-containing fabric finishing agents usually refer to the introduction of inorganic nano-materials into organic polymer systems such as fluorine-containing polyacrylates. Combining, building a water-repellent, oil-repellent low surface energy microstructure and a microscopically rough surface, and obtaining a higher water-repellent and oil-repellent function. [0003] Chemical substances with low surface energy mainly include fluorine-containing materials and organosiloxane, etc. The roughening of the surface microstructure can be achieved by introducing inorganic nanomaterials, such as silicon dioxide (SiO2), titanium dioxide, zinc oxide, carbon nanotubes, and silver particles. Wait. Among them, nano-silicon dioxide (SiO2) is current...
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