CN104974612A - Microporous acrylic paint and preparation method thereof - Google Patents
Microporous acrylic paint and preparation method thereof Download PDFInfo
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- CN104974612A CN104974612A CN201510293971.4A CN201510293971A CN104974612A CN 104974612 A CN104974612 A CN 104974612A CN 201510293971 A CN201510293971 A CN 201510293971A CN 104974612 A CN104974612 A CN 104974612A
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Abstract
The invention discloses a microporous acrylic paint and a preparation method thereof. The paint comprises the components of, by weight, 40-60 parts of an acrylic elastomer, 5-30 parts of titanium dioxide, 1-20 parts of a foaming agent, 1-2 parts of a dispersing agent, 1-20 parts of water, and 1-5 parts of white carbon black. When the paint is set, an acrylic coating material providing a physical adsorption manner can be formed. When the coating contacts a flat surface and is slightly pressed, residual air in the micro-pores are discharged, and certain negative pressure is generated, such that the bonding of other interfaces which do not completely contact the flat surface can be promoted. Therefore, the entire coating can be completely bonded with the flat surface. The paint provided by the invention has the characteristics of low cost and aging resistance, and can be repeatedly used.
Description
Technical field
The present invention relates to acrylic coating field, more specifically relate to a kind of microporous acrylic coating and preparation method thereof.
Background technology
Material at present as surface protection film has vinylformic acid, epoxy resin, urethane, organosilicon material and hybrid material etc., and wherein, vinylformic acid is the important materials of conventional coatings coating industry, has adhesive ability good, and cost is lower, the feature such as easily to produce.These materials first adopt the curing mode such as heat, light semicure, have certain chemical viscosity, can paste on the surface of needs protection, play protective effect.But because these adsorption effects are the reactive forces deriving from chemical group, after these chemical groups are aging, will sticking effect be lost, cause coming off, even residual, and contaminated surface.Existing vinylformic acid protective membrane all adopts chemisorption or chemisorption to be main substantially, the rare supercoat material based on physical adsorption.
Summary of the invention
The object of the invention is to overcome current acrylic coating and rely on merely chemical group effect, aging rear forfeiture sticking effect, come off, residual, and the problem of the surface contamination caused, provides a kind of microporous acrylic coating, form micropore on surface after its solidification, can strengthen and extend the stickup time.
Technical scheme of the present invention is:
A kind of microporous acrylic coating, each component is as follows by weight ratio
Acrylic elastomer 40-60 part;
Titanium dioxide 5-30 part;
Whipping agent 1-20 part;
Dispersion agent 1-2 part;
Water 1-20 part;
White carbon black 1-5 part.
Wherein, after solidification that what acrylate elastomer was chosen is, shore hardness is lower than the acryhic material of 2H, and after further preferred consolidation, shore hardness is lower than any one in the acrylic coating of 2H, vinylformic acid, pressure sensitive adhesive, acrylic resin.
Whipping agent is production of low-temperature foaming agent, blowing-agent particle size is less than 20 microns, decompose in 90 DEG C to 130 DEG C and produce gas, gas generated is 100ml/G-130ml/G, one or more of preferred sodium bicarbonate, bicarbonate of ammonia, azo-compound, sulfonyl hydrazines compound.
Titanium dioxide is hydrophilic or hydrophilic and oleophilic both sexes titanium dioxide, and particle diameter is less than 10 microns.
Dispersion agent is aqueous dispersant, selects N, and N'-has supportted at least one in bis-stearamides (EBS), glyceryl monostearate (GMS), Tristearoylglycerol (HTG).
A preparation method for microporous acrylic material, its step is as follows:
First in water, dispersion agent, whipping agent is added, even with high speed machine dispersant, producing foamed agent emulsion; Then in acrylic elastomer, add titanium dioxide, white carbon black, dispersion agent, be uniformly dispersed with high speed dispersion agent, more obtained whipping agent emulsion is slowly added wherein under high velocity agitation, control dispersion temperature in dispersion process and be no more than 50 DEG C.
Beneficial effect of the present invention:
1, microporous acrylic coating of the present invention can form a kind of acrylic acid coatings material providing physical adsorption way, its thermofixation is on film substrate, whipping agent in material can produce a large amount of gas, these gases break through coatingsurface, produce many micropores, when coating contacts with flat surface, pressure a little, nanopores the air that remains be discharged, produce certain negative pressure, can promote that all the other contact not interface very completely and fit further with burnishing surface, whole coating can be fitted burnishing surface completely, show excellent surperficial venting quality, and combined by the adhesiving effect of the chemical group with material itself, improve adhesiving effect.This characteristic close to or be better than the organosilicon material of same coat-thickness, but price just organosilicon material 1/3rd, and have excellent physical adsorption effect to flat surface, play good surface protection effect.
2, acryhic material all has good sticking power to many base materials, and do not need as silicone based product needed coating linging, its solidification value is low in addition, easy to use.
3, strong to substrate adherence, the adhesive tape formed after solidification is reusable, again can be pasted on base material, even if adhesive tape surface is contaminated, clean up rear reusable after tearing.
4, there is excellent ageing resistance, usage period limit for length, peel off rear surface without cull.
Embodiment
Be clearly and completely described technical scheme below in conjunction with the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Be described in detail below in conjunction with concrete truth example.
Embodiment 1
In 20 parts of water, add 1 part of Tristearoylglycerol dispersion agent, 20 parts of sodium bicarbonate whipping agents, be uniformly dispersed with high speed machine dispersion machine, stirring velocity is 1200rpm, stirs 30 minutes, producing foamed agent emulsion.
Acrylic resin 40 parts, add titanium dioxide 15 parts, white carbon black 3 parts, Tristearoylglycerol dispersion agent 1 part, be uniformly dispersed with high speed dispersor, stirring velocity 2000rpm, churning time 30 minutes, more obtained whipping agent emulsion is slowly added wherein under high velocity agitation.Control dispersion temperature in dispersion process and be no more than 50 DEG C.
Wherein, acrylic resin is the product after solidification, hardness being less than 2H.
Be base material with PET, being coated on base material, take steel plate as pasted objects, recording 180 ° of stripping strengths is 13g/inch, UV ultraviolet (wavelength 340nm) irradiate 24 hours unchanged, there is excellent ageing resistance, water tolerance, and can repeat to paste and use.
Embodiment 2
(1) in 20 parts of water, add 1 part of Tristearoylglycerol dispersion agent, 10 parts of azo compound whipping agents, be uniformly dispersed with high speed machine dispersion machine, stirring velocity is 1200rpm, stirs 30 minutes, producing foamed agent emulsion.
Titanium dioxide 16 parts, white carbon black 2 parts, N is added in acrylic acid aqueous pressure sensitive adhesive 50 parts, N '-supportted bis-stearamides dispersion agent 1 part, be uniformly dispersed with high speed dispersor, stirring velocity 2000rpm, churning time 30 minutes, more obtained whipping agent emulsion is slowly added wherein under high velocity agitation.Control dispersion temperature in dispersion process and be no more than 50 DEG C.
Wherein, the preparation method of acrylic acid aqueous pressure sensitive adhesive: add in reaction unit by solvent, part mix monomer, initiator, heats up when reaching polymerization temperature 75 DEG C and drips remaining mix monomer.After dripping off, add initiator, improve temperature of reaction, extend the reaction times, make polyreaction complete.Then add ammoniacal liquor again, be dispersed in discharging in aqueous phase with making polymer uniform.Wherein, mix monomer is 75 parts of butyl acrylates, 9 parts of 2-EHAs, 9 parts of ethyl propenoates, 7 parts of vinylformic acid compositions.
Be base material with PET, being coated on base material, take steel plate as pasted objects, recording 180 ° of stripping strengths is 15g/inch, UV ultraviolet (wavelength 340nm) irradiate 24 hours unchanged, there is excellent ageing resistance, water tolerance, and can repeat to paste and use.
Embodiment 3
In 20 parts of water, add 1 part of Tristearoylglycerol dispersion agent, 10 parts of sodium bicarbonate whipping agents, be uniformly dispersed with high speed machine dispersion machine, stirring velocity is 1200rpm, stirs 30 minutes, producing foamed agent emulsion.
In 50 parts, vinylformic acid, add titanium dioxide 16 parts, white carbon black 2 parts, N, N '-support bis-stearamides dispersion agent 1 part, be uniformly dispersed with high speed dispersor, stirring velocity 2000rpm, churning time 30 minutes, more obtained whipping agent emulsion is slowly added wherein under high velocity agitation.Control dispersion temperature in dispersion process and be no more than 50 DEG C.
Wherein, vinylformic acid is the product after solidification, hardness being less than 2H.
Be base material with PET, being coated on base material, take steel plate as pasted objects, recording 180 ° of stripping strengths is 11g/inch, UV ultraviolet (wavelength 340nm) irradiate 24 hours unchanged, there is excellent ageing resistance, water tolerance, and can repeat to paste and use.
Embodiment 4
In 20 parts of water, add 1 part of Tristearoylglycerol dispersion agent, 20 parts of azo compound whipping agents, be uniformly dispersed with high speed machine dispersion machine, stirring velocity is 1200rpm, stirs 30 minutes, producing foamed agent emulsion.
Titanium dioxide 15 parts, white carbon black 3 parts, N is added in acrylic acid aqueous pressure sensitive adhesive 40 parts, N '-supportted bis-stearamides dispersion agent 1 part, be uniformly dispersed with high speed dispersor, stirring velocity 2000rpm, churning time 30 minutes, more obtained whipping agent emulsion is slowly added wherein under high velocity agitation.Control dispersion temperature in dispersion process and be no more than 50 DEG C.
Wherein, the preparation method of acrylic acid aqueous pressure sensitive adhesive: add in reaction unit by solvent, part mix monomer, initiator, heats up when reaching polymerization temperature 75 DEG C and drips remaining mix monomer.After dripping off, add initiator, improve temperature of reaction, extend the reaction times, make polyreaction complete.Then add ammoniacal liquor again, be dispersed in discharging in aqueous phase with making polymer uniform.Wherein, mix monomer is 75 parts of butyl acrylates, 9 parts of 2-EHAs, 9 parts of ethyl propenoates, 7 parts of vinylformic acid compositions.
Be base material with PET, being coated on base material, take steel plate as pasted objects, recording 180 ° of stripping strengths is 17g/inch, UV ultraviolet (wavelength 340nm) irradiate 24 hours unchanged, there is excellent ageing resistance, water tolerance, and can repeat to paste and use.
Embodiment 5
2 parts of glyceryl monostearate (GMS) dispersion agents, 1 part of sulfonyl hydrazines compound is added (herein in 20 parts of water, send out for p-toluene sulfonyl hydrazide) whipping agent, be uniformly dispersed with high speed machine dispersion machine, stirring velocity is 1200rpm, stir 30 minutes, producing foamed agent emulsion.
In acrylic resin 40 parts, add titanium dioxide 5 parts, white carbon black 5 parts, be uniformly dispersed with high speed dispersor, stirring velocity 2000rpm, churning time 30 minutes, more obtained whipping agent emulsion is slowly added wherein under high velocity agitation.Control dispersion temperature in dispersion process and be no more than 50 DEG C.
Be base material with PET, being coated on base material, take steel plate as pasted objects, recording 180 ° of stripping strengths is 11g/inch, UV ultraviolet (wavelength 340nm) irradiate 24 hours unchanged, there is excellent ageing resistance, water tolerance, and can repeat to paste and use.
Embodiment 6
In 20 parts of water, add 0.5 part of Tristearoylglycerol and 0.5 part of glyceryl monostearate dispersion agent, 20 parts of bicarbonate of ammonia whipping agents, be uniformly dispersed with high speed machine dispersion machine, stirring velocity is 1200rpm, stirs 30 minutes, producing foamed agent emulsion.
Titanium dioxide 30 parts, white carbon black 1 part, N is added in acrylic coating 60 parts, N '-supportted bis-stearamides dispersion agent 1 part, is uniformly dispersed with high speed dispersor, stirring velocity 2000rpm, churning time 30 minutes, more obtained whipping agent emulsion is slowly added wherein under high velocity agitation.Control dispersion temperature in dispersion process and be no more than 50 DEG C.
Be base material with PET, being coated on base material, take steel plate as pasted objects, recording 180 ° of stripping strengths is 14g/inch, UV ultraviolet (wavelength 340nm) irradiate 24 hours unchanged, there is excellent ageing resistance, water tolerance, and can repeat to paste and use.
Above-mentioned all embodiments, except adopting the water of 20 mass parts, also can carry out rational allocation as required.
Contrast row 1
Direct use acrylate pressure sensitive adhesive glue replaces product of the present invention, take PET as base material, coated on base material, take steel plate as pasted objects, recording 180 ° of stripping strengths is that 19g/inch, UV ultraviolet (wavelength 340nm) is irradiated and had a small amount of cull in 24 hours, has good ageing resistance, reuse rear adhesive effect to be deteriorated, just can not use repeatedly.
Comparative example 2
After adopting solidification, hardness replaces product of the present invention to be coated with lower than the acrylic resin product of 2H, after being coated PET base material, does not have adhesive effect.
Claims (8)
1. a microporous acrylic coating, its domestic animal is characterised in that, each component is as follows by weight ratio:
Acrylic elastomer 40-60 part;
Titanium dioxide 5-30 part;
Whipping agent 1-20 part;
Dispersion agent 1-2 part;
Water 1-20 part;
White carbon black 1-5 part.
2. microporous acrylic coating according to claim 1, is characterized in that: described acrylic elastomer is the acryhic material of the rear shore hardness of solidification lower than 2H.
3. microporous acrylic coating according to claim 2, is characterized in that: acrylic elastomer be after solidification shore hardness lower than any one in the acrylic coating of 2H, vinylformic acid, pressure sensitive adhesive, acrylic resin.
4. the microporous acrylic coating according to any one of claims 1 to 3, it is characterized in that: whipping agent is production of low-temperature foaming agent, blowing-agent particle size is less than 20 microns, and decompose in 90 DEG C to 130 DEG C and produce gas, gas generated is 100ml/G-130ml/G.
5. microporous acrylic coating according to claim 4, is characterized in that: described whipping agent is selected from least one in sodium bicarbonate, bicarbonate of ammonia, azo-compound, sulfonyl hydrazines compound.
6. microporous acrylic coating according to claim 5, is characterized in that: titanium dioxide is hydrophilic titanium dioxide or hydrophilic and oleophilic both sexes titanium dioxide, and the particle diameter of described titanium dioxide particle is less than 10 microns.
7. microporous acrylic coating according to claim 6, is characterized in that: described dispersion agent is aqueous dispersant, and described dispersion agent is selected from N, and N'-has supportted at least one in bis-stearamides, glyceryl monostearate, Tristearoylglycerol.
8. a preparation method for microporous acrylic coating according to claim 7, its step is as follows:
First in water, add dispersion agent, whipping agent, stir, producing foamed agent emulsion; Then in acrylic elastomer, add titanium dioxide, white carbon black, dispersion agent, stir, more obtained whipping agent emulsion is slowly added the acrylic elastomer containing titanium dioxide, white carbon black, dispersion agent, obtained microporous acrylic coating.
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| CN201510293971.4A CN104974612A (en) | 2015-06-01 | 2015-06-01 | Microporous acrylic paint and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106366982A (en) * | 2016-10-26 | 2017-02-01 | 沈阳万合胶业股份有限公司 | Preparation method of porous adhesive |
| CN107200980A (en) * | 2016-03-16 | 2017-09-26 | 青岛科技大学 | A kind of ACM supercritical foaming material and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102382533A (en) * | 2010-09-01 | 2012-03-21 | 北京航材百慕新材料技术工程股份有限公司 | Environment-friendly aqueous industrial thermal insulation coating |
| CN102925084A (en) * | 2012-11-21 | 2013-02-13 | 哈尔滨工业大学 | Multi-purpose strippable acrylate adhesive microporous material and preparation method thereof |
-
2015
- 2015-06-01 CN CN201510293971.4A patent/CN104974612A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102382533A (en) * | 2010-09-01 | 2012-03-21 | 北京航材百慕新材料技术工程股份有限公司 | Environment-friendly aqueous industrial thermal insulation coating |
| CN102925084A (en) * | 2012-11-21 | 2013-02-13 | 哈尔滨工业大学 | Multi-purpose strippable acrylate adhesive microporous material and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107200980A (en) * | 2016-03-16 | 2017-09-26 | 青岛科技大学 | A kind of ACM supercritical foaming material and preparation method thereof |
| CN106366982A (en) * | 2016-10-26 | 2017-02-01 | 沈阳万合胶业股份有限公司 | Preparation method of porous adhesive |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20170314 Address after: Dalang Town, Guangdong city of Dongguan province for the 523000 Road community Fumin Road No. 62 Applicant after: Dongguan six Chun Technology Co. Ltd. Address before: 518103 Guangdong, Baoan District, Fuyong, Phoenix Street, industrial park, Third Industrial Park, building D, Applicant before: Six Chun adhesive products (Shenzhen) Co., Ltd. |
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Application publication date: 20151014 |
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