CN105176356A - Waterborne strippable anticorrosive coating and preparation method thereof - Google Patents
Waterborne strippable anticorrosive coating and preparation method thereof Download PDFInfo
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- CN105176356A CN105176356A CN201510678422.9A CN201510678422A CN105176356A CN 105176356 A CN105176356 A CN 105176356A CN 201510678422 A CN201510678422 A CN 201510678422A CN 105176356 A CN105176356 A CN 105176356A
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Abstract
The invention discloses a waterborne strippable anticorrosive coating. The coating comprises the following components: polyurethane emulsion, water, a filler, modified silica sol, a wetting agent, a dispersing agent, a thickening agent, a defoaming agent, a leveling agent and a stripping agent, wherein the filler is mixture of micarex, wollastonite and super-fine calcium carbonate; the thickening agent is one or mixture of a plurality of sodium hexametaphosphate, sodium dodecyl benzene sulfonate and sodium polyacrylate; the thickening agent is RheoT30; the defoaming agent is one or more of BYK-012, BYK-024, SN-1340 and Dow Corning 62; the leveling agent is polyether modified dimethyl siloxane; the stripping agent is waterborne stearic acid. The invention further discloses a preparation method of the waterborne strippable anticorrosive coating, the strength and the stripping performance of the coating film are good, the coating has an anti-ultraviolet function in addition to effective anticorrosive performance, the substrate can be more comprehensively and effectively protected, the preparation method is simple and feasible, and the preparation cost is low.
Description
Technical field
The present invention relates to water-borne coatings field, be specifically related to a kind of water-based strippable anticorrosive coating and preparation method thereof.
Background technology
The equipment such as material, instrument and component are in transport, storage, processing and assembling process, easily be scratched, wear and tear, pollute, also the erosion of salt fog, moisture, acid rain, microorganism etc. is easily subject to, thus there is chemical corrosion and galvanic corrosion, affect the exterior appearance of equipment, even can make degradation.In order to reduce these infringements, extending the work-ing life of equipment, needing effectively to seal protection up for safekeeping to equipment.For starting material and work in-process, also need to carry out the operations such as follow-up processing or assembling, require the cleaning keeping surface, therefore do not protect by modes such as rust prevention by applying liquid material paints.Peelable protective film is used to be that this problem of solution is the most effective, the method for most convenient.
And along with various countries are to the reinforcement of environmental protection consciousness, as the green coating of pollution-free or low stain, toxicological harmless or low murder by poisoning, the research of water-based strippable anticorrosive coating comes into one's own day by day.It is solvent or dispersion agent that water-based strippable anticorrosive coating refers to water, makes filmogen dispersed or be dissolved in water, natural film forming after coating the coating that can peel off.Therefore the progress of research to national science and technology development, society of water-based strippable anticorrosive coating has very important meaning.
Summary of the invention
Technical problem to be solved by this invention is; for the shortcoming that above prior art exists; a kind of water-based strippable anticorrosive coating and preparation method thereof is proposed; this coating is coated with film strength and rippability performance is good; except can effective anticorrosion except, also there is anti-ultraviolet function, can to the protection of ground more comprehensively and effectively; preparation method is simple, and preparation cost is cheap.
The technical scheme that the present invention solves above technical problem is:
A kind of water-based strippable anticorrosive coating, coating comprises following component by its mass parts:
Polyaminoester emulsion 60-65 part
Water 20-30 part
Filler 5-10 part
Modified silicasol 5-10 part
Wetting agent 0.1-0.3 part
Dispersion agent 0.8-1.5 part
Thickening material 0.6-0.9 part
Defoamer 0.2-0.4 part
Flow agent 0.4-0.8 part
Stripper 1-2 part
Wherein, filler is the mixture of Muscovitum, wollastonite and calcium carbonate superfine powder, and the mass ratio of its Muscovitum, wollastonite, calcium carbonate superfine powder is 8:2-4:1; Dispersion agent is one or more mixtures in Sodium hexametaphosphate 99, Sodium dodecylbenzene sulfonate, polyacrylic acid sodium salt; Thickening material is RheoT30; Defoamer is one or more in BYK-012, BYK-024, SN-1340, DOW CORNING 62; Flow agent is polyether-modified dimethyl siloxane; Stripper is water-based stearic acid;
The technical scheme that the present invention limits further is:
In aforementioned water-based strippable anticorrosive coating, the preparation method of modified silicasol is:
Get alkaline silica sol in the there-necked flask that reflux is housed, and silane coupling agent is dissolved in dehydrated alcohol forms solution, dropwise be added in alkaline silica sol under rotating speed is 200-250r/min stirring, dripping speed is 2s/d, after dripping at 50-60 DEG C insulated and stirred 7-8h, namely obtain modified silicasol;
Wherein, silane coupling agent is the one in γ-(2,3-epoxy third oxygen) propyl trimethoxy silicane or γ-methacryloxypropyl trimethoxy silane; The mass ratio of alkaline silica sol and dehydrated alcohol is 1:1.2-1.5;
The concrete steps that the present invention also designs a kind of preparation method of water-based strippable anticorrosive coating are as follows:
(1) modified silicasol and polyaminoester emulsion are poured in beaker respectively, under 100-200r/min condition, stir 1h make both mix, obtain mixed emulsion;
(2) in one wide mouthful of plastic containers, add water, under 100-150r/min agitation condition, instill wetting agent, dispersion agent, thickening material and defoamer, stir 5-10min and various auxiliary agent is mixed, obtain mixed solution;
(3) low whipping speed is added by filler in the mixed solution of above-mentioned steps (2) under 200-250r/min, after filler is wetting, stirs 30-40min, obtain fillers dispersed liquid under 400-500r/min;
(4) under 200-300r/min, mixed emulsion is slowly joined in dispersion liquid, continue to stir 15-20min; (5) reduce stirring velocity again to 100-150r/min, add flow agent, thickening material, stripper, defoamer, stir 20-30min, obtained water-based strippable anticorrosive coating.
In the technical scheme that the present invention limits further:
In the preparation method of aforementioned water-based strippable anticorrosive coating, polyaminoester emulsion solids content is 35-40%, and viscosity is 600-700mPa.s.
The invention has the beneficial effects as follows: water-based strippable anticorrosive coating prepared by (1) the present invention, be coated with film strength and rippability performance is good, except can effective anticorrosion except, also there is anti-ultraviolet function, can to the protection of ground more comprehensively and effectively.
(2) a kind of water-based strippable anticorrosive coating provided by the invention, film has comparatively high tensile and elongation at break, low stripping strength, good water tolerance and salt tolerance.
(3) the present invention uses cheap water and the organic solvent that do not use price higher, poisonous, has not both polluted the environment, and has in turn saved production cost, and improve the security of construction.
(4) filler that the present invention uses contains mica powder, mica powder is a kind of silicate with laminate structure, there is gloss, high resilience, flexible, wear resistance, thermotolerance, chemical stability etc. are functional, mica in water or in organic solvent dispersion suspension good, look white grain is thin, has stickiness, ultraviolet penetrating can be stoped, anti-be full of cracks, efflorescence.
(5) modified silicasol that the present invention adds effectively can improve water tolerance, solvent resistance, antiblocking, thermotolerance, the hardness of film of film.
(6) the polyether-modified dimethyl siloxane added in the present invention, the surface tension of coating system can be reduced, and have certain wettability to base material, coating can be made to have good levelling property and spreadability, in addition, the wear resistance of film, scrath resistance, non-stick property and adding lustre to property can be improved simultaneously.
Embodiment
embodiment 1
The present embodiment provides a kind of water-based strippable anticorrosive coating, and coating comprises following component by its mass parts:
Polyaminoester emulsion: 62 parts, water: 25 parts, filler: 5 parts, modified silicasol: 10 parts, wetting agent: 0.1 part, dispersion agent Sodium dodecylbenzene sulfonate: 1.2 parts, thickening material RheoT30:0.9 part, defoamer BYK-012:0.2 part, the polyether-modified dimethyl siloxane of flow agent: 0.4 part, stripper water-based stearic acid: 1 part;
Wherein, filler is the mixture of Muscovitum, wollastonite and calcium carbonate superfine powder, and the mass ratio of its Muscovitum, wollastonite, calcium carbonate superfine powder is 8:2-4:1;
The preparation method of modified silicasol is:
Get alkaline silica sol in the there-necked flask that reflux is housed, and silane coupling agent is dissolved in dehydrated alcohol forms solution, be dropwise be added in alkaline silica sol under 220r/min stirs at rotating speed, dripping speed is 2s/d, after dripping at 55 DEG C insulated and stirred 7h, namely obtain modified silicasol;
Wherein, silane coupling agent is the one in γ-(2,3-epoxy third oxygen) propyl trimethoxy silicane or γ-methacryloxypropyl trimethoxy silane; The mass ratio of alkaline silica sol and dehydrated alcohol is 1:1.2-1.5.
The preparation method of above-mentioned water-based strippable anticorrosive coating, concrete steps are as follows:
(1) modified silicasol and polyaminoester emulsion are poured in beaker respectively, under 150r/min condition, stir 1h make both mix, obtain mixed emulsion;
Polyaminoester emulsion solids content is 38%, and viscosity is 700mPa.s;
(2) in one wide mouthful of plastic containers, add water, under 130r/min agitation condition, instill wetting agent, dispersion agent, thickening material and defoamer, stir 10min and various auxiliary agent is mixed, obtain mixed solution;
(3) low whipping speed is added by filler in the mixed solution of above-mentioned steps (2) under 220r/min, after filler is wetting, stirs 40min, obtain fillers dispersed liquid under 450r/min;
(4) under 250r/min, mixed emulsion is slowly joined in dispersion liquid, continue to stir 20min;
(5) reduce stirring velocity again to 125r/min, add flow agent, thickening material, stripper, defoamer, stir 30min, obtained water-based strippable anticorrosive coating.
embodiment 2
The present embodiment provides a kind of water-based strippable anticorrosive coating, and coating comprises following component by its mass parts:
Polyaminoester emulsion: 60 parts, water: 30 parts, filler: 8 parts, modified silicasol: 5 parts, wetting agent: 0.2 part, dispersion agent polyacrylic acid sodium salt: 1.5 parts, thickening material RheoT30:0.6 part, defoamer SN-1340:0.4 part, the polyether-modified dimethyl siloxane of flow agent: 0.6 part, stripper water-based stearic acid: 2 parts;
Wherein, filler is the mixture of Muscovitum, wollastonite and calcium carbonate superfine powder, and the mass ratio of its Muscovitum, wollastonite, calcium carbonate superfine powder is 8:2-4:1;
The preparation method of modified silicasol is:
Get alkaline silica sol in the there-necked flask that reflux is housed, and silane coupling agent is dissolved in dehydrated alcohol forms solution, be dropwise be added in alkaline silica sol under 250r/min stirs at rotating speed, dripping speed is 2s/d, after dripping at 60 DEG C insulated and stirred 8h, namely obtain modified silicasol;
Wherein, silane coupling agent is the one in γ-(2,3-epoxy third oxygen) propyl trimethoxy silicane or γ-methacryloxypropyl trimethoxy silane; The mass ratio of alkaline silica sol and dehydrated alcohol is 1:1.2-1.5.
The preparation method of above-mentioned water-based strippable anticorrosive coating, concrete steps are as follows:
(1) modified silicasol and polyaminoester emulsion are poured in beaker respectively, under 200r/min condition, stir 1h make both mix, obtain mixed emulsion;
Polyaminoester emulsion solids content is 35%, and viscosity is 600mPa.s;
(2) in one wide mouthful of plastic containers, add water, under 150r/min agitation condition, instill wetting agent, dispersion agent, thickening material and defoamer, stir 8min and various auxiliary agent is mixed, obtain mixed solution;
(3) low whipping speed is added by filler in the mixed solution of above-mentioned steps (2) under 250r/min, after filler is wetting, stirs 30min, obtain fillers dispersed liquid under 400r/min;
(4) under 300r/min, mixed emulsion is slowly joined in dispersion liquid, continue to stir 18min;
(5) reduce stirring velocity again to 150r/min, add flow agent, thickening material, stripper, defoamer, stir 20min, obtained water-based strippable anticorrosive coating.
embodiment 3
The present embodiment provides a kind of water-based strippable anticorrosive coating, and coating comprises following component by its mass parts:
Polyaminoester emulsion: 65 parts, water: 20 parts, filler: 10 parts, modified silicasol: 8 parts, wetting agent: 0.3 part, sodium hexametaphosphate dispersant: 0.8 part, thickening material RheoT30:0.7 part, defoamer BYK-024:0.3 part, the polyether-modified dimethyl siloxane of flow agent: 0.8 part, stripper water-based stearic acid: 1 part;
Wherein, filler is the mixture of Muscovitum, wollastonite and calcium carbonate superfine powder, and the mass ratio of its Muscovitum, wollastonite, calcium carbonate superfine powder is 8:2-4:1;
The preparation method of modified silicasol is:
Get alkaline silica sol in the there-necked flask that reflux is housed, and silane coupling agent is dissolved in dehydrated alcohol forms solution, be dropwise be added in alkaline silica sol under 200r/min stirs at rotating speed, dripping speed is 2s/d, after dripping at 50 DEG C insulated and stirred 7h, namely obtain modified silicasol;
Wherein, silane coupling agent is the one in γ-(2,3-epoxy third oxygen) propyl trimethoxy silicane or γ-methacryloxypropyl trimethoxy silane; The mass ratio of alkaline silica sol and dehydrated alcohol is 1:1.2-1.5.
The preparation method of above-mentioned water-based strippable anticorrosive coating, concrete steps are as follows:
(1) modified silicasol and polyaminoester emulsion are poured in beaker respectively, under 100r/min condition, stir 1h make both mix, obtain mixed emulsion;
Polyaminoester emulsion solids content is 40%, and viscosity is 650mPa.s;
(2) in one wide mouthful of plastic containers, add water, under 100r/min agitation condition, instill wetting agent, dispersion agent, thickening material and defoamer, stir 5min and various auxiliary agent is mixed, obtain mixed solution;
(3) low whipping speed is added by filler in the mixed solution of above-mentioned steps (2) under 200r/min, after filler is wetting, stirs 35min, obtain fillers dispersed liquid under 500r/min;
(4) under 200r/min, mixed emulsion is slowly joined in dispersion liquid, continue to stir 15min;
(5) reduce stirring velocity again to 100r/min, add flow agent, thickening material, stripper, defoamer, stir 25min, obtained water-based strippable anticorrosive coating.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of application claims.
Claims (4)
1. a water-based strippable anticorrosive coating, is characterized in that, described coating comprises following component by its mass parts:
Polyaminoester emulsion 60-65 part
Water 20-30 part
Filler 5-10 part
Modified silicasol 5-10 part
Wetting agent 0.1-0.3 part
Dispersion agent 0.8-1.5 part
Thickening material 0.6-0.9 part
Defoamer 0.2-0.4 part
Flow agent 0.4-0.8 part
Stripper 1-2 part
Wherein, described filler is the mixture of Muscovitum, wollastonite and calcium carbonate superfine powder, and the mass ratio of its Muscovitum, wollastonite, calcium carbonate superfine powder is 8:2-4:1; Described dispersion agent is one or more mixtures in Sodium hexametaphosphate 99, Sodium dodecylbenzene sulfonate, polyacrylic acid sodium salt; Described thickening material is RheoT30; Described defoamer is one or more in BYK-012, BYK-024, SN-1340, DOW CORNING 62; Described flow agent is polyether-modified dimethyl siloxane; Described stripper is water-based stearic acid.
2. water-based strippable anticorrosive coating according to claim 1, is characterized in that, the preparation method of described modified silicasol is:
Get alkaline silica sol in the there-necked flask that reflux is housed, and silane coupling agent is dissolved in dehydrated alcohol forms solution, dropwise be added in alkaline silica sol under rotating speed is 200-250r/min stirring, dripping speed is 2s/d, after dripping at 50-60 DEG C insulated and stirred 7-8h, namely obtain modified silicasol;
Wherein, described silane coupling agent is the one in γ-(2,3-epoxy third oxygen) propyl trimethoxy silicane or γ-methacryloxypropyl trimethoxy silane; Described alkaline silica sol and the mass ratio of dehydrated alcohol are 1:1.2-1.5.
3. the preparation method of water-based strippable anticorrosive coating as claimed in claim 1, it is characterized in that, concrete steps are as follows:
(1) modified silicasol and polyaminoester emulsion are poured in beaker respectively, under 100-200r/min condition, stir 1h make both mix, obtain mixed emulsion;
(2) in one wide mouthful of plastic containers, add water, under 100-150r/min agitation condition, instill wetting agent, dispersion agent, thickening material and defoamer, stir 5-10min and various auxiliary agent is mixed, obtain mixed solution;
(3) low whipping speed is added by filler in the mixed solution of above-mentioned steps (2) under 200-250r/min, after filler is wetting, stirs 30-40min, obtain fillers dispersed liquid under 400-500r/min;
(4) under 200-300r/min, mixed emulsion is slowly joined in dispersion liquid, continue to stir 15-20min; (5) reduce stirring velocity again to 100-150r/min, add flow agent, thickening material, stripper, defoamer, stir 20-30min, obtained water-based strippable anticorrosive coating.
4. the preparation method of water-based strippable anticorrosive coating according to claim 3, is characterized in that, described polyaminoester emulsion solids content is 35-40%, and viscosity is 600-700mPa.s.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106590077A (en) * | 2016-12-15 | 2017-04-26 | 苏州富艾姆工业设备有限公司 | Treatment process of corrosion-resistant and wear-resistant type water pump piston |
| CN106590103A (en) * | 2016-12-15 | 2017-04-26 | 苏州纽东精密制造科技有限公司 | Water-borne anti-corrosion coating and preparing method thereof |
| CN106590313A (en) * | 2016-12-13 | 2017-04-26 | 苏州赛斯德工程设备有限公司 | Peelable abrasion-resistant paint and preparation method thereof |
| CN106629981A (en) * | 2016-12-15 | 2017-05-10 | 苏州富艾姆工业设备有限公司 | Treatment process for filter screen for industrial wastewater purification equipment |
| CN108864854A (en) * | 2018-07-13 | 2018-11-23 | 安徽康瑞高科新材料技术工程有限公司 | A kind of ABS plastic one-component priming paint and preparation method thereof |
| CN109161243A (en) * | 2018-08-24 | 2019-01-08 | 广东鑫皇冠新材料有限公司 | A kind of strippable water-based paint and preparation method thereof |
| CN111269643A (en) * | 2020-01-20 | 2020-06-12 | 云南焕驰新材料科技有限公司 | Water-based tearable film sol resin for vehicle paint protection and preparation method and application thereof |
| CN113388292A (en) * | 2021-01-27 | 2021-09-14 | 浙江星华反光材料有限公司 | Organic-inorganic composite water-based paint and preparation method and application thereof |
| CN113621337A (en) * | 2021-09-06 | 2021-11-09 | 广州亦盛环保科技有限公司 | Low-temperature thermosetting water-based peelable adhesive and preparation method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106590313A (en) * | 2016-12-13 | 2017-04-26 | 苏州赛斯德工程设备有限公司 | Peelable abrasion-resistant paint and preparation method thereof |
| CN106590077A (en) * | 2016-12-15 | 2017-04-26 | 苏州富艾姆工业设备有限公司 | Treatment process of corrosion-resistant and wear-resistant type water pump piston |
| CN106590103A (en) * | 2016-12-15 | 2017-04-26 | 苏州纽东精密制造科技有限公司 | Water-borne anti-corrosion coating and preparing method thereof |
| CN106629981A (en) * | 2016-12-15 | 2017-05-10 | 苏州富艾姆工业设备有限公司 | Treatment process for filter screen for industrial wastewater purification equipment |
| CN108864854A (en) * | 2018-07-13 | 2018-11-23 | 安徽康瑞高科新材料技术工程有限公司 | A kind of ABS plastic one-component priming paint and preparation method thereof |
| CN109161243A (en) * | 2018-08-24 | 2019-01-08 | 广东鑫皇冠新材料有限公司 | A kind of strippable water-based paint and preparation method thereof |
| CN111269643A (en) * | 2020-01-20 | 2020-06-12 | 云南焕驰新材料科技有限公司 | Water-based tearable film sol resin for vehicle paint protection and preparation method and application thereof |
| CN111269643B (en) * | 2020-01-20 | 2021-09-21 | 云南焕驰新材料科技有限公司 | Water-based tearable film sol resin for vehicle paint protection and preparation method and application thereof |
| CN113388292A (en) * | 2021-01-27 | 2021-09-14 | 浙江星华反光材料有限公司 | Organic-inorganic composite water-based paint and preparation method and application thereof |
| CN113621337A (en) * | 2021-09-06 | 2021-11-09 | 广州亦盛环保科技有限公司 | Low-temperature thermosetting water-based peelable adhesive and preparation method thereof |
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