CN103992718A - Room temperature-curable aqueous epoxy anticorrosion coating and preparation method thereof - Google Patents
Room temperature-curable aqueous epoxy anticorrosion coating and preparation method thereof Download PDFInfo
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- CN103992718A CN103992718A CN201410164431.1A CN201410164431A CN103992718A CN 103992718 A CN103992718 A CN 103992718A CN 201410164431 A CN201410164431 A CN 201410164431A CN 103992718 A CN103992718 A CN 103992718A
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Abstract
The invention discloses a room temperature-curable aqueous epoxy anticorrosion coating and a preparation method thereof. The coating comprises, by mass, 15-35 parts of epoxy resin, 15-30 parts of a curing agent, 2-15 parts of silicon carbide, 0.5-8 parts of benzoyl peroxide, 30-45 parts of a solvent and 4-6 parts of butyl acrylate. The room temperature-curable aqueous epoxy anticorrosion coating has the characteristics of low VOC, environmental protection, and film coating without heating curing, and is suitable for the anticorrosion of substrates which cannot be heated. The coating has the advantages of easy obtaining of required raw materials, simple production technology, construction convenience, easy operation, instant taking and spraying/rolling, fast drying, short construction cycle, and no demolding in subsequent processing.
Description
Technical field
The invention belongs to technical field of coatings, relate to a kind of protective coating and preparation method thereof, specifically a kind of room temperature curing type water corrosion-resistant epoxy paint and preparation method thereof.
Background technology
In following paint field, water-borne coatings will become important directions and the study hotspot of paint development with its extremely low VOC content and excellent performance.Epoxy resin because of its kind more, excellent performance, and being widely used in coating material production, but epoxy coating is solvent type mostly at present, seriously polluted, so aqueous epoxide resin paint becomes the focus of countries nowadays research.Although the cost of material of aqueous epoxy coating is higher, production technique is more complicated, and along with the raising of coating industry door, its advantage will highlight, and will have increasing magnetism.
Summary of the invention
Technical problem to be solved by this invention is, for overcoming the shortcoming of prior art, provides a kind of room temperature curing type water corrosion-resistant epoxy paint and preparation method thereof, and it has very strong corrosion resistance, and coating application is convenient simultaneously, and following process is without the demoulding etc.
In order to solve above technical problem, the invention provides a kind of room temperature curing type water corrosion-resistant epoxy paint, its composition is as follows by mass parts:
Epoxy resin 15-35 part
Solidifying agent 15-30 part
Silicon carbide 2-15 part
Benzoyl peroxide 0.5-8 part
Solvent 30-45 part
4-6 parts of butyl acrylates.
Further restriction technical scheme of the present invention, aforesaid room temperature curing type water corrosion-resistant epoxy paint, described epoxy resin is E-44 type liquid-state epoxy resin; Described solidifying agent is low molecule water-based daiamid epoxy curing agent; Described solvent is dimethylbenzene and/or 160# solvent oil.
Aforesaid room temperature curing type water corrosion-resistant epoxy paint, its composition is as follows by mass parts:
25 parts of epoxy resin
20 parts, solidifying agent
13 parts, silicon carbide
6 parts of benzoyl peroxides
30 parts of solvents
6 parts of butyl acrylates.
A preparation method for room temperature curing type water corrosion-resistant epoxy paint, making method step is as follows:
Step (1): first epoxy resin, butyl acrylate, benzoyl peroxide are mixed by default mass ratio with solvent, in stirring tank, heat and carry out dispersed with stirring, stirring velocity 400-700r/min, 120～135 ℃ of Heating temperatures, churning time 70-90min, makes emulsion liquid;
Step (2): liquid prepared by step (1) is lowered the temperature, makes its temperature be less than 60 ℃, and regulate pH value is 6-8 simultaneously, and normal temperature is preserved;
Step (3): after then solidifying agent, the silicon carbide of default component being mixed by distilled water, be ground to fineness and be not more than 40 μ m on conoidal mill, make solid solution;
Step (4): the liquid that final step (1) and step (3) make carries out high-speed stirring 40-55min, and stirring velocity 1200-1500r/min, can obtain room temperature curing type water corrosion-resistant epoxy paint.
The preparation method of aforesaid room temperature curing type water corrosion-resistant epoxy paint, described epoxy resin is E-44 type liquid-state epoxy resin; Described solidifying agent is low molecule water-based daiamid epoxy curing agent; Described solvent is dimethylbenzene and/or 160# solvent oil.
The preparation method of the room temperature curing type water corrosion-resistant epoxy paint of further stating, is characterized in that, making method step is as follows:
Step (1): first epoxy resin, butyl acrylate, benzoyl peroxide are mixed by default mass ratio with solvent, in stirring tank, heat and carry out dispersed with stirring, stirring velocity 500r/min, 135 ℃ of Heating temperatures, churning time 70min, makes emulsion liquid;
Step (2): liquid prepared by step (1) is lowered the temperature, makes its temperature be less than 60 ℃, and regulate pH value is 7-7.5 simultaneously, and normal temperature is preserved;
Step (3): after then solidifying agent, the silicon carbide of default component being mixed by distilled water, be ground to fineness and be not more than 40 μ m on conoidal mill, make solid solution;
Step (4): the liquid that final step (1) and step (3) make carries out high-speed stirring 55min, and stirring velocity 1500r/min, can obtain room temperature curing type water corrosion-resistant epoxy paint.
The invention has the beneficial effects as follows: room temperature curing type water corrosion-resistant epoxy paint of the present invention has and the low environmental protection again of VOC, films without being heating and curing, be applicable to the anticorrosion of the ground that can not heat.Raw material required for the present invention easily obtains, and production technique is simple, easy construction, and easy handling, get and spray/roll, fast drying, short construction period, following process is without the demoulding.
Embodiment
By specific embodiment, the specific embodiment of the present invention is described in further detail below.
Solidifying agent in the present invention is selected the U.S. EH613W of Qing Te company aqueous epoxy curing agent;
Epoxy resin is selected the E-44 type liquid-state epoxy resin of Ba Ling petrochemical industry.
embodiment 1
The present embodiment provides a kind of room temperature curing type water corrosion-resistant epoxy paint, and its composition is as follows by mass parts:
25 parts of epoxy resin
20 parts, solidifying agent
13 parts, silicon carbide
6 parts of benzoyl peroxides
30 parts of dimethylbenzene
6 parts of butyl acrylates.
Preparation process is as follows: step (1): first epoxy resin, butyl acrylate, benzoyl peroxide are mixed by default mass ratio with dimethylbenzene, in stirring tank, heat and carry out dispersed with stirring, stirring velocity 500r/min, 135 ℃ of Heating temperatures, churning time 70min, makes emulsion liquid; Step (2): liquid prepared by step (1) is lowered the temperature, makes its temperature be less than 60 ℃, and regulate pH value is 7-7.5 simultaneously, and normal temperature is preserved; Step (3): after then solidifying agent, the silicon carbide of default component being mixed by distilled water, be ground to fineness and be not more than 40 μ m on conoidal mill, make solid solution; Step (4): the liquid that final step (1) and step (3) make carries out high-speed stirring 55min, and stirring velocity 1500r/min, can obtain room temperature curing type water corrosion-resistant epoxy paint.
embodiment 2
The present embodiment provides a kind of room temperature curing type water corrosion-resistant epoxy paint, and its composition is as follows by mass parts:
30 parts of epoxy resin
15 parts, solidifying agent
10 parts, silicon carbide
5 parts of benzoyl peroxides
34 parts of dimethylbenzene
6 parts of butyl acrylates.。
Preparation process is as follows: step (1): first epoxy resin, butyl acrylate, benzoyl peroxide are mixed by default mass ratio with dimethylbenzene, in stirring tank, heat and carry out dispersed with stirring, stirring velocity 600r/min, 120 ℃ of Heating temperatures, churning time 80min, makes emulsion liquid; Step (2): liquid prepared by step (1) is lowered the temperature, makes its temperature be less than 60 ℃, and regulate pH value is 7-7.5 simultaneously, and normal temperature is preserved; Step (3): after then solidifying agent, the silicon carbide of default component being mixed by distilled water, be ground to fineness and be not more than 40 μ m on conoidal mill, make solid solution; Step (4): the liquid that final step (1) and step (3) make carries out high-speed stirring 50min, and stirring velocity 1400r/min, can obtain room temperature curing type water corrosion-resistant epoxy paint.
embodiment 3
The present embodiment provides a kind of room temperature curing type water corrosion-resistant epoxy paint, and its composition is as follows by mass parts:
30 parts of epoxy resin
20 parts, solidifying agent
10 parts, silicon carbide
5 parts of benzoyl peroxides
30 parts of 160# solvent oils
5 parts of butyl acrylates.
Preparation process is as follows: step (1): first epoxy resin, butyl acrylate, benzoyl peroxide are mixed by default mass ratio with 160# solvent oil, in stirring tank, heat and carry out dispersed with stirring, stirring velocity 600r/min, 125 ℃ of Heating temperatures, churning time 85min, makes emulsion liquid; Step (2): liquid prepared by step (1) is lowered the temperature, makes its temperature be less than 60 ℃, and regulate pH value is 7-8 simultaneously, and normal temperature is preserved; Step (3): after then solidifying agent, the silicon carbide of default component being mixed by distilled water, be ground to fineness and be not more than 40 μ m on conoidal mill, make solid solution; Step (4): the liquid that final step (1) and step (3) make carries out high-speed stirring 45min, and stirring velocity 1400r/min, can obtain room temperature curing type water corrosion-resistant epoxy paint.
A kind of room temperature curing type water corrosion-resistant epoxy paint of the present invention is sprayed on to metallic surface and forms coating, coat-thickness is 55 um, carries out related physical Performance Detection, and data are as following table 1:
Table 1 metallic surface of the present invention protective system performance detection data
| Test item | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Snappiness | 2 grades | 1 grade | 2 grades |
| Shock-resistance | 35cm | 45cm | 50cm |
| Hardness | 0.52 | 0.55 | 0.59 |
| Sticking power | 2 grades | 1 grade | 1 grade |
| Salt fog resistance (sodium chloride solution that mass percent is 5%) | 156h | 160h | 168h |
Above embodiment only, for explanation technological thought of the present invention, can not limit protection scope of the present invention with this, every technological thought proposing according to the present invention, and any change of doing on technical scheme basis, within all falling into protection domain of the present invention.
Claims (6)
1. a room temperature curing type water corrosion-resistant epoxy paint, is characterized in that, its composition is as follows by mass parts:
Epoxy resin 15-35 part
Solidifying agent 15-30 part
Silicon carbide 2-15 part
Benzoyl peroxide 0.5-8 part
Solvent 30-45 part
4-6 parts of butyl acrylates.
2. room temperature curing type water corrosion-resistant epoxy paint according to claim 1, is characterized in that, described epoxy resin is E-44 type liquid-state epoxy resin; Described solidifying agent is low molecule water-based daiamid epoxy curing agent; Described solvent is dimethylbenzene and/or 160# solvent oil.
3. room temperature curing type water corrosion-resistant epoxy paint according to claim 1, is characterized in that, its composition is as follows by mass parts:
25 parts of epoxy resin
20 parts, solidifying agent
13 parts, silicon carbide
6 parts of benzoyl peroxides
30 parts of solvents
6 parts of butyl acrylates.
4. a preparation method for room temperature curing type water corrosion-resistant epoxy paint, is characterized in that, making method step is as follows:
Step (1): the Hydroxylated acrylic resin that first configures solid content 20%, epoxy resin, butyl acrylate, benzoyl peroxide are mixed by default mass ratio with solvent, in stirring tank, heat and carry out dispersed with stirring, stirring velocity 400-700r/min, 120～135 ℃ of Heating temperatures, churning time 70-90min, makes emulsion liquid;
Step (2): liquid prepared by step (1) is lowered the temperature, makes its temperature be less than 60 ℃, and regulate pH value is 6-8 simultaneously, and normal temperature is preserved;
Step (3): after then solidifying agent, the silicon carbide of default component being mixed by distilled water, be ground to fineness and be not more than 40 μ m on conoidal mill, make solid solution;
Step (4): the liquid that final step (1) and step (3) make carries out high-speed stirring 40-55min, and stirring velocity 1200-1500r/min, can obtain room temperature curing type water corrosion-resistant epoxy paint.
5. the preparation method of room temperature curing type water corrosion-resistant epoxy paint according to claim 4, is characterized in that, described epoxy resin is E-44 type liquid-state epoxy resin; Described solidifying agent is low molecule water-based daiamid epoxy curing agent; Described solvent is dimethylbenzene and/or 160# solvent oil.
6. the preparation method of room temperature curing type water corrosion-resistant epoxy paint according to claim 4, is characterized in that, making method step is as follows:
Step (1): the Hydroxylated acrylic resin that first configures solid content 20%, epoxy resin, butyl acrylate, benzoyl peroxide are mixed by default mass ratio with solvent, in stirring tank, heat and carry out dispersed with stirring, stirring velocity 500r/min, 135 ℃ of Heating temperatures, churning time 70min, makes emulsion liquid;
Step (2): liquid prepared by step (1) is lowered the temperature, makes its temperature be less than 60 ℃, and regulate pH value is 7-7.5 simultaneously, and normal temperature is preserved;
Step (3): after then solidifying agent, the silicon carbide of default component being mixed by distilled water, be ground to fineness and be not more than 40 μ m on conoidal mill, make solid solution;
Step (4): the liquid that final step (1) and step (3) make carries out high-speed stirring 55min, and stirring velocity 1500r/min, can obtain room temperature curing type water corrosion-resistant epoxy paint.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410164431.1A CN103992718A (en) | 2014-04-23 | 2014-04-23 | Room temperature-curable aqueous epoxy anticorrosion coating and preparation method thereof |
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| CN201410164431.1A CN103992718A (en) | 2014-04-23 | 2014-04-23 | Room temperature-curable aqueous epoxy anticorrosion coating and preparation method thereof |
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Cited By (5)
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| CN104263045A (en) * | 2014-09-19 | 2015-01-07 | 江苏海晟涂料有限公司 | Water-based epoxy anticorrosive paint and preparation method thereof |
| CN106752712A (en) * | 2016-12-22 | 2017-05-31 | 天津爱蔻科技股份有限公司 | A kind of chemical material transport vehicle inwall anticorrosive |
| CN109988482A (en) * | 2019-03-09 | 2019-07-09 | 金华市易途新材料有限公司 | A kind of preparation method of the water-free waterborne wood primer of 100% solid content |
| CN110358399A (en) * | 2019-07-06 | 2019-10-22 | 慈溪市果雨电子商务有限公司 | A kind of preparation method of high abrasion heat reflection road surface composite coating |
| CN112778809A (en) * | 2020-12-30 | 2021-05-11 | 江西瀚泰新材料科技有限公司 | Water-based anticorrosive paint and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104263045A (en) * | 2014-09-19 | 2015-01-07 | 江苏海晟涂料有限公司 | Water-based epoxy anticorrosive paint and preparation method thereof |
| CN106752712A (en) * | 2016-12-22 | 2017-05-31 | 天津爱蔻科技股份有限公司 | A kind of chemical material transport vehicle inwall anticorrosive |
| CN109988482A (en) * | 2019-03-09 | 2019-07-09 | 金华市易途新材料有限公司 | A kind of preparation method of the water-free waterborne wood primer of 100% solid content |
| CN110358399A (en) * | 2019-07-06 | 2019-10-22 | 慈溪市果雨电子商务有限公司 | A kind of preparation method of high abrasion heat reflection road surface composite coating |
| CN112778809A (en) * | 2020-12-30 | 2021-05-11 | 江西瀚泰新材料科技有限公司 | Water-based anticorrosive paint and preparation method thereof |
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Application publication date: 20140820 |