Fluorine-silicon modified acrylate emulsion and preparation method thereof

An acrylate and modified technology, used in dyeing, textile and papermaking, fiber processing, etc., can solve the problems of low surface energy, low glass transition temperature, too soft film of silicone series compounds, etc. Low, prevent dye migration, reduce the effect of VOC emission

Inactive Publication Date: 2016-02-10
WUYI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high silicon-oxygen bond energy (460KJ / mol) of silicone materials, coatings containing silicone materials have the advantages of low surface energy, excellent stain resistance, good thermal stability, and low glass transition temperature. Series compound coating film is too soft

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1 is composed of the following materials in parts by weight: Acrylic acid 5.0, ethyl acrylate 8.0, glycidyl acrylate 0.5, octamethylcyclotetrasiloxane (D4) 3.0, trifluoroethyl acrylate 8.0, alkylethylene Sodium sulfonate 5.0, potassium persulfate 0.5, deionized water 70.0

[0028] First, potassium persulfate is added into the catalyst tank equipped with deionized water, and stirred evenly to obtain a concentration of 2.5% initiator solution A; acrylic acid, ethyl acrylate, glycidyl acrylate, octamethylcyclotetrasiloxane ( D4) Mix trifluoroethyl acrylate in the premixing tank evenly to obtain the mixed phase B of polymerized monomers; add sodium alkyl vinyl sulfonate and deionized water into the four-necked flask, maintain the rotation speed at 200r / min, and heat After reaching 85°C, slowly add the uniformly mixed monomer mixed phase B and 90% initiator solution A for 1 hour, and keep the polymerization temperature at 85°C during the reaction process; At the sam...

Embodiment 2

[0029] Example 2 is composed of the following materials in parts by weight: methyl acrylate 12.0, octyl acrylate 10.0, glycidyl methacrylate 1.0, hexamethylcyclotrisiloxane (D3) 3.0, hexafluorobutyl methacrylate Ester 6.0, Sodium Lauryl Allyl Succinate 2.0, Ammonium Persulfate 1.0, Deionized Water 65.0

[0030] First, ammonium persulfate is added to the catalyst tank equipped with deionized water, and stirred evenly to obtain an initiator solution A with a concentration of 2.5%; methyl acrylate, octyl acrylate, glycidyl methacrylate, hexamethylcyclotri Mix siloxane (D3) and hexafluorobutyl methacrylate evenly in the premixing tank to obtain the mixed phase B of polymerized monomers; add sodium dodecyl allyl succinate and deionized water into a four-necked flask , the rotating speed is maintained at 250r / min, after heating to 70°C, slowly add the homogeneously mixed monomer mixed phase B and 90% initiator solution A for 3 hours, and the reaction process maintains the polymeriza...

Embodiment 3

[0031] Example 3 is composed of the following materials in parts by weight: methacrylic acid 9.0, butyl acrylate 12.0, glycidyl methacrylate 0.5, decamethylcyclopentasiloxane (D5) 8.0, trifluoroethyl methacrylate Ester 3.0, sodium vinyl sulfonate 8.0, ammonium persulfate 0.5, deionized water 60.0

[0032] First, ammonium persulfate is added to the catalyst tank equipped with deionized water, and stirred evenly to obtain a concentration of 2.5% initiator solution A; methacrylic acid, butyl acrylate, glycidyl methacrylate, decamethylcyclopentadiene Mix siloxane (D5) and trifluoroethyl methacrylate evenly in the premixing tank to obtain the mixed phase B of polymerized monomers; add sodium vinyl sulfonate and deionized water into a four-necked flask, and maintain the rotation speed at 300r / min, after heating to 90°C, slowly drop the homogeneously mixed monomer mixed phase B and 90% initiator solution A for 1 hour, and keep the polymerization temperature at 90°C during the reacti...

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PUM

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Abstract

The invention relates to a fluorine-silicon modified acrylate emulsion and a preparation method thereof. A hard monomer, a soft monomer, a cross-linking monomer, an organosilicon monomer, a fluorine-containing monomer and a responsive emulsification monomer are selected to realize one-time synthesis of the emulsion under the action of an initiator. The method comprises the following steps: dissolving the initiator in water, uniformly mixing the hard monomer, the soft monomer, the cross-linking monomer, the organosilicon monomer and the fluorine-containing monomer, heating an emulsifier and water in a four-neck flask to 70-90DEG C, slowly adding the above obtained uniformly-mixed monomer mixture phase and 90% of the above obtained initiator solution in a dropwise manner in 1-3h at 70-90DEG C under a rotating speed of 200-400r/min, maintaining the temperature unchanged in a range of 70-90DEG C for 1-3h after the dropwise addition ends, adding the remaining 10% of the initiator solution in a dropwise manner in the temperature maintaining process, cooling to 50DEG C or below, and adding ammonia water to adjust the pH value to 6.5-8. The fluorine-silicon modified acrylate emulsion integrates respective advantages of silicon and fluorine polymerse, and is suitable for dye migration resistance, water resistance, oil resistance, fouling resistance, fog resistance and self-cleaning function.

Description

technical field [0001] The invention relates to the field of textile coatings, in particular to a silicon-fluorine modified acrylate emulsion and a preparation method thereof. Background technique [0002] In the coating finishing or functional finishing of polyester and nylon fibers, during heat treatment, the dye inside the fiber will undergo thermal migration in the opposite direction to the dyeing, and part of the dye will re-migrate to the surface of the fiber, resulting in a significant decrease in the color fastness of the finished product. With the development of diversified coating finishing, disperse dyes not only have thermal migration phenomenon, but also solvent migration phenomenon, especially when non-polar solvents or non-ionic surfactants are present, even when the finished product is placed for a long time , leading to color flowers and color spots on the surface of the fabric, there is currently no good solution. [0003] Inspired by lotus leaves and shar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F220/14C08F220/06C08F220/32C08F220/22C08F2/26D06M15/356D06P1/52
Inventor 曾显华贾永堂黄钢
Owner WUYI UNIV
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