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Water-based organic silicon high-elastic coating adhesive for textiles and preparation method thereof

A silicone and textile technology, applied in the field of textile water-based silicone high-elastic coating glue and its preparation, can solve the problems of solvent volatilization loss, D4 monomer residue, potential safety hazards, etc., to reduce electrostatic tension and increase adsorption fastness degree, enhance the effect of softness

Pending Publication Date: 2022-01-21
LIAONING FIXED STAR FINE CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most of the high-elastic coating adhesives on the market are solvent-based silicone coating adhesives, and their high-elastic, crisp and smooth coating styles dominate the market; their disadvantages are that they contain a large amount of toluene and ethyl acetate. Organic solvents such as esters, after the coating is dried, all the solvents are volatilized and lost, resulting in waste of resources and environmental pollution, and there are large safety hazards; there are also some water-based silicone coating adhesive products, and the basic emulsion is mostly D4 (8 Methylcyclotetrasiloxane) and coupling agent ring-opening polymerization, there are a large number of free D4 and other volatile rings and oligomer residues in the product, which affects the elasticity and fastness of the emulsion after cross-linking and film formation, and Can not meet the increasingly stringent environmental protection requirements
However, the method used to synthesize the silicon emulsion is D4 ring opening, and there will be a large amount of D4 monomer residue in the emulsion, and the catalyst used for crosslinking and curing of the coating adhesive is dibutyltin dilaurate emulsion, which cannot meet the latest environmental protection requirements.

Method used

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  • Water-based organic silicon high-elastic coating adhesive for textiles and preparation method thereof
  • Water-based organic silicon high-elastic coating adhesive for textiles and preparation method thereof
  • Water-based organic silicon high-elastic coating adhesive for textiles and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0044] The present embodiment provides a kind of textile water-based organic silicon high-elastic coating glue, and its preparation method is as follows:

[0045] 1. Mix 60 parts of α, ω-dihydroxy-terminated polydimethylsiloxane, 4 parts of dodecylbenzenesulfonic acid, 3 parts of nonionic emulsifier (AEO-7), γ-piperazinylpropyl 1 part of methyl dimethoxysilane, 1.4 parts of γ-glycidyl ether oxypropyl methyl dimethoxy silane, 150 parts of deionized water, fully stir evenly and put the mixture under high pressure with working pressure of 30-40Mpa Pass through the homogenizer once to make an emulsion, then lower the temperature to 5°C and let it stand for 24 hours to react, and adjust the pH to 7-8 with 10% sodium carbonate aqueous solution by mass percentage;

[0046] 2. Add water-based polyurethane thickener PUR-50 to the product obtained in step 1 at room temperature to thicken to a viscosity of 2000mPa·s (25°C);

[0047] 3. Add 6 parts of crosslinking agent 1,2-bistrimethoxy...

Embodiment 2

[0050] The present embodiment provides a kind of textile water-based organic silicon high-elastic coating glue, and its preparation method is as follows:

[0051] 1. 72 parts of α, ω-dihydroxy-terminated polydimethylsiloxane, 6 parts of dodecylbenzenesulfonic acid, 4 parts of nonionic emulsifier (XL-50), γ-piperazinylpropyl 1.3 parts of methyldimethoxysilane, 1.7 parts of γ-glycidyl etheroxypropyl triethoxysilane, 180 parts of deionized water, stir well and homogenize the mixture under a high-pressure working pressure of 30-40Mpa Make an emulsion through one pass in the machine, then lower the temperature to 10°C and let it stand for 48 hours to react, then adjust the pH to 7-8 with 10% sodium carbonate aqueous solution by mass percentage;

[0052] 2. Add water-based polyurethane thickener PUR-50 to the product obtained in step 1 at room temperature to thicken to a viscosity of 2500mPa·s (25°C);

[0053] 3. Add 8 parts of crosslinking agent 1,2-bistrimethoxysilylethane and 4 ...

Embodiment 3

[0055] The present embodiment provides a kind of textile water-based organic silicon high-elastic coating glue, and its preparation method is as follows:

[0056] 1. Mix 80 parts of α, ω-dihydroxy-terminated polydimethylsiloxane, 8 parts of dodecylbenzenesulfonic acid, 5 parts of nonionic emulsifier (TO-7), γ-piperazinylpropyl 1.6 parts of methyldimethoxysilane, 2 parts of γ-glycidyl etheroxypropyl trimethoxysilane, 200 parts of deionized water, stir well and put the mixture in a high-pressure homogenizer with a working pressure of 30-40Mpa Make an emulsion through one pass in the medium, then lower the temperature to 5°C and let it stand for 24 hours to react, and adjust the pH to 7-8 with 10% sodium carbonate aqueous solution by mass percentage;

[0057] 2. Add water-based polyurethane thickener RM-8W to the product obtained in step 1 at room temperature to thicken to a viscosity of 2800mPa·s (25°C);

[0058] 3. Add 9 parts of crosslinking agent 1,2-bistrimethoxysilylethane...

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Abstract

The invention discloses a water-based organic silicon high-elastic coating adhesive for textiles and a preparation method thereof. The preparation method comprises the following steps: S1, weighing the following raw materials in parts by mass: 60 to 80 parts of alpha, omega-dihydroxy-terminated polydimethylsiloxane, 4 to 8 parts of dodecylbenzene sulfonic acid, 3 to 5 parts of a nonionic emulsifier, 1 to 2 parts of an epoxy silane coupling agent, 1 to 2 parts of a piperazinyl silane coupling agent and 150 to 200 parts of water; S2, mixing and uniformly stirring the raw materials weighed in the S1, homogenizing in an environment of 30 to 40 Mpa to prepare an emulsion, cooling the emulsion to 5 to 10 DEG C, then standing and reacting for 24 to 48 hours, and then adjusting the pH value to 7 to 8 to obtain a first product; S3, adding a thickening agent into the first product, and thickening until the viscosity is 2000 to 3000 mPa.s at 25 DEG C to obtain a second product; and S4, adding 6 to 9 parts of a cross-linking agent and 3 to 5 parts of a catalyst into the second product, and uniformly stirring to obtain the water-based organic silicon high-elastic coating adhesive for the textiles. The water-based organic silicon high-elastic coating adhesive for the textile disclosed by the invention can effectively improve the elasticity, the wrinkle resistance and the fastness of the textiles.

Description

technical field [0001] The invention relates to the technical field of textile coating processing, in particular to a textile water-based silicone high-elastic coating glue and a preparation method thereof. Background technique [0002] At present, most of the high-elastic coating adhesives on the market are solvent-based silicone coating adhesives, and their high-elastic, crisp and smooth coating styles dominate the market; their disadvantages are that they contain a large amount of toluene and ethyl acetate. Organic solvents such as esters, after the coating is dried, all the solvents are volatilized and lost, resulting in waste of resources and environmental pollution, and there are large safety hazards; there are also some water-based silicone coating adhesive products, and the basic emulsion is mostly D4 (8 Methylcyclotetrasiloxane) and coupling agent ring-opening polymerization, there are a large number of free D4 and other volatile rings and oligomer residues in the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/643D06M13/188D06M13/256D06M13/513D06M15/564
CPCD06M15/643D06M13/513D06M15/564D06M13/256D06M13/188D06M2200/20D06M2200/50
Inventor 陈龙鞠镭荣星唐丽陈剑冰肖婷婷周明李瑶曲文婕
Owner LIAONING FIXED STAR FINE CHEM