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Coating for protecting glass and preparation method thereof

A technology for protecting glass and coatings, applied in the coating and other directions, can solve the problems of small adhesion, easy to fall off, low bonding strength, etc., to achieve the effect of enhancing adhesion, non-toxic to human body and environment, and improving smoothness

Inactive Publication Date: 2017-08-01
深圳市中盈建科控股有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are two problems in glass coatings. One is that most of the glass coatings are solvent-based coatings, which need to use organic solvents such as benzene and toluene, which are harmful to the human body and the environment; the second is the bonding strength of most glass coatings to various glass materials. Low, low adhesion, easy to fall off, especially when cleaning with a high-pressure water gun

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Prepare siloxane-modified polyurethane emulsion for use: add 18g of isophorone diisocyanate, 12g of polypropylene glycol, 10g of polytetrahydrofuran ether glycol, 3g of dimethylol butyric acid and 2g of 1,4-butanediol into the flask Mix, then add an appropriate amount of methyl ethyl ketone to the flask to adjust the viscosity, then add 0.1g of dibutyltin dilaurate as a catalyst, stir and react at 80-85°C for 2 hours to prepare a polyurethane prepolymer, add isobutyltriethoxysilane Modify the polyurethane prepolymer, stir for 1-2 hours, cool down to 35-40°C, add triethylamine to neutralize, slowly add the modified prepolymer to deionized water, add diethylenetriamine, and stir , to obtain silicone modified polyurethane emulsion.

[0023] Get 10 parts by mass of deionized water, 0.1 parts by mass of leveling agent, 0.2 parts by mass of dispersant, 0.2 parts by mass of sodium dodecyl naphthalene sulfonate, 0.2 parts by mass of alcohol ester twelve film-forming aids In th...

Embodiment 2

[0025] Get 20 parts by mass of deionized water, 0.15 parts by mass of leveling agent, 0.25 parts by mass of dispersant, 0.3 parts by mass of sodium heptadecyl naphthalene sulfonate, 0.3 parts by mass of alcohol ester twelve film-forming aids In the dispersion kettle, stir at a high speed; add 1.2 mass parts of dipropylene glycol monomethyl ether, 0.14 mass parts of ethyl (methyl) triethoxy (methoxy) silane to the dispersion kettle, stir; Add 0.1 parts by mass of nano-zinc oxide, 0.1 parts by mass of nano-alumina, 0.04 parts by mass of nano-silicon carbide, and 3 parts by mass of reflective powder, stir; then add 35 parts by mass of the prepared in Example 1 to the dispersion kettle The siloxane-modified polyurethane emulsion and 8 parts by mass of acrylic emulsion were stirred, ground and dispersed, and filtered to obtain a coating for protection and retention. The coating film has good water resistance, scrub resistance, scratch resistance, and strong adhesion on the glass su...

Embodiment 3

[0027] Take 20 parts by mass of deionized water, 0.3 parts by mass of leveling agent, 0.3 parts by mass of dispersant, 0.6 parts by mass of dodecylphenol, and 0.5 parts by mass of alcohol ester twelve film-forming aids into the dispersion tank , high-speed stirring; add 2 mass parts of dipropylene glycol monomethyl ether, 0.2 mass parts of ethyl (methyl) triethoxy (methoxy) silane to the dispersion tank, stir; then add 0.1 mass 45 parts by mass of nano-alumina, 0.1 parts by mass of nano-silicon carbide, 3 parts by mass of reflective powder, and 0.1 parts by mass of dyestuff, stir; then add 45 parts by mass of the above-prepared siloxane-modified polyurethane to the dispersion kettle Emulsion, 10 parts by mass of acrylic emulsion, stirring, grinding, dispersing, and filtering to obtain a coating for protection and retention. The coating film has good water resistance, scrub resistance, scratch resistance, and strong adhesion on the glass surface. By adding reflective powder to...

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PUM

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Abstract

The invention discloses a coating for protecting glass and a preparation method thereof. The coating contains a mixed emulsion of a siloxane modified polyurethane emulsion and an acrylic emulsion; siloxane is adopted for modifying a polyurethane prepolymer, thus obtaining the siloxane modified polyurethane emulsion for preparing the coating, so that the adhesion and water resistance of the coating are improved, the water immersion adhesion of a film formed by the coating is obviously superior to that of a conventional glass coating; the stability of the coating is enhanced through mixing the siloxane modified polyurethane emulsion and the acrylic emulsion; the coating contains nano-metal oxide and nano silicon carbide, so that the adhesion of the coating on the surface of the glass is further enhanced, and the good scratch resistance, scrub resistance and weather resistance of the coating are realized, so that the glass can be better protected; dipropylene glycol monomethyl ether and ethyl(methyl) triethoxy(methoxyl) silicane contained in the coating can also enable the coating to have better adhesion.

Description

technical field [0001] The invention relates to the technical field of glass coatings, in particular to a coating for protecting glass and a preparation method thereof. Background technique [0002] Coating is a general term for overnight liquid or solid materials that are applied to the surface of an object to form a solid coating film for protection, decoration or special functions (such as antibacterial, fire prevention, etc.). With the improvement of people's living standards, people's pursuit of higher and higher standards for living conditions has also put forward higher and higher requirements for coating technology, and the field of coating technology is constantly improving and developing. Glass coating is a kind of coating. Glass coating is attached to the surface of the glass and plays a certain functional role, such as protecting the glass from scratches, heat insulation, antibacterial, anti-glare, etc. At present, there are two problems in glass coatings. One i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D133/00C09D7/12C08G18/83C08G18/75C08G18/66C08G18/48C08G18/32C08G18/34
CPCC09D175/08C08G18/6674C08G18/6692C08G18/755C08G18/837C08K2003/2227C08K2003/2244C08K2003/2296C08K2201/011C09D7/63C08L33/00C08K13/02C08K3/22C08K3/34C08K5/06C08K5/5419
Inventor 危强辉刘财根
Owner 深圳市中盈建科控股有限公司
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