CN110396178A - A kind of large arch dam water paint curing agent - Google Patents
A kind of large arch dam water paint curing agent Download PDFInfo
- Publication number
- CN110396178A CN110396178A CN201910344288.7A CN201910344288A CN110396178A CN 110396178 A CN110396178 A CN 110396178A CN 201910344288 A CN201910344288 A CN 201910344288A CN 110396178 A CN110396178 A CN 110396178A
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- CN
- China
- Prior art keywords
- weight
- parts
- curing agent
- water paint
- arch dam
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
Abstract
A kind of large arch dam water paint curing agent provided by the invention, includes the following parts by weight: 1 parts by weight of methyl diphenylene diisocyanate, poly glycol monomethyl ether 2-3 parts by weight, 1 parts by weight of 1- 1-cyanoethyl-2-methylimidazole, dimethylethanolamine 2-3 parts by weight, chitosan 2-10 parts by weight.The present invention is by studying different curing agent, be prepared zero VOC, large arch dam waterborne epoxy coatings, realize the technology of water paint high solid low viscosity, break through high solid solvent based coating can not Water-borne modification technical problem, it is further reduced VOC emission, meets national environmental protection.
Description
Technical field
The present invention relates to coating material field, in particular to a kind of large arch dam water paint curing agent and preparation method thereof
With application.
Background technique
Due to water-base resin material viscosity is high and high speed dispersion is easy to cause resin demulsification etc., water-base epoxy at present
The technique that water defibrination is widely used in coating in the fabrication process.The technique is cumbersome, and the manufacturing cycle is long, and energy consumption is high, in manufacturing process
It needs to add the auxiliary agent containing VOC, needs additional water, cause the solid content of product low, when coating application needs multiple coating
It can be only achieved ideal effect, energy consumption is high, and the period is long, and the water paint produced by the technique can only substitute oil product VOC
Coating greater than 420g/L cannot substitute other oil products for containing VOC (VOC is less than 420g/L).To further decrease life
Energy consumption and discharge of poisonous waste during production promote waterborne epoxy coatings quality, realize green production, need to coating material production
Technique improves.
The curing reaction of epoxy resin is by the way that curing agent is added, using in the certain groups and epoxy resin in curing agent
Epoxy group or hydroxyl react to realize.Curing agent is one of the key factor for influencing waterborne epoxy coatings performance.It passes
The solvent type curing agent of system be difficult to it is miscible with waterborne epoxy coatings, so must be solidified with water-base epoxy for water-borne epoxy systems
Agent just can solve this problem.Common aliphatic amine curing agent is larger to human body stimulation, while being easy to react with CO2 in air
Salt is generated, or absorbs moisture whiting, therefore actually using aqueous epoxy curing agent is mostly polyamines and epoxy resin addition product.But
There are still number of drawbacks for modified amine curing agent at present, such as weatherability is poor, Yi Bianhuang, and flexibility, adhesive force is not good enough yet.
Summary of the invention
Technical problem: in order to solve the defects of prior art, the present invention provides a kind of solidifications of large arch dam water paint
Agent and the preparation method and application thereof.
Technical solution: a kind of large arch dam water paint curing agent provided by the invention includes the following parts by weight:
1 parts by weight of methyl diphenylene diisocyanate, poly glycol monomethyl ether 2-3 parts by weight, 1 weight of 1- 1-cyanoethyl-2-methylimidazole
Part, dimethylethanolamine 2-3 parts by weight, chitosan 2-10 parts by weight.
Preferably, large arch dam water paint curing agent, includes the following parts by weight: diphenylmethane diisocyanate
1 parts by weight of ester, 2.5 parts by weight of poly glycol monomethyl ether, 1 parts by weight of 1- 1-cyanoethyl-2-methylimidazole, dimethylethanolamine 2.5
Parts by weight, 4 parts by weight of chitosan.
A kind of preparation method of large arch dam water paint curing agent, comprising the following steps:
(1) methyl diphenylene diisocyanate is dissolved in methylene chloride, is heated to 50-60 DEG C of constant temperature, drop is compiled in side stirring
Enter glycol monoethyl ether, dripped off in 2h, drips off rear isothermal reaction 1-2h；
(2) it is warming up to 70-80 DEG C, reaction system stirs while adding 1- 1-cyanoethyl-2-methylimidazole, isothermal reaction 1-
2h；
(3) reaction system stirs while adding dimethylethanolamine, isothermal reaction 1-2h；
(4) reaction system stirs while adding chitosan, isothermal reaction 1-2h；Be down to room temperature to get.
The dosage of each raw material are as follows: 1 parts by weight of methyl diphenylene diisocyanate, poly glycol monomethyl ether 2-3 parts by weight, 1-
1 parts by weight of 1-cyanoethyl-2-methylimidazole, dimethylethanolamine 2-3 parts by weight, chitosan 2-10 parts by weight.
The utility model has the advantages that zero VOC, large arch dam waterborne epoxy coatings is prepared by the different curing agent of research in the present invention,
Realize water paint high solid low viscosity technology, break through high solid solvent based coating can not Water-borne modification technical problem, further
VOC emission is reduced, national environmental protection policy is met, can need to provide heavy antisepsis for harbour machinery, ship and ocean platform etc.
Industry provides good protection.
Specific embodiment
The present invention is further illustrated below.
Embodiment 1
Large arch dam water paint curing agent, includes the following parts by weight: 1 weight of methyl diphenylene diisocyanate
Part, 2 parts by weight of poly glycol monomethyl ether, 1 parts by weight of 1- 1-cyanoethyl-2-methylimidazole, 2 parts by weight of dimethylethanolamine, shell are poly-
Sugared 2 parts by weight.
Preparation method, comprising the following steps:
(1) methyl diphenylene diisocyanate is dissolved in methylene chloride, is heated to 60 DEG C of constant temperature, side stirring, which is compiled, instills second
Glycol monomethyl ether drips off in 2h, drips off rear isothermal reaction 1h；
(2) 80 DEG C are warming up to, reaction system stirs while adding 1- 1-cyanoethyl-2-methylimidazole, isothermal reaction 1-2h；
(3) reaction system stirs while adding dimethylethanolamine, isothermal reaction 1h；
(4) reaction system stirs while adding chitosan, isothermal reaction 1h；Be down to room temperature to get.
Embodiment 2
Large arch dam water paint curing agent, includes the following parts by weight: 1 weight of methyl diphenylene diisocyanate
Part, 3 parts by weight of poly glycol monomethyl ether, 1 parts by weight of 1- 1-cyanoethyl-2-methylimidazole, 3 parts by weight of dimethylethanolamine, shell are poly-
Sugared 10 parts by weight.
Preparation method, comprising the following steps:
(1) methyl diphenylene diisocyanate is dissolved in methylene chloride, is heated to 50 DEG C of constant temperature, side stirring, which is compiled, instills second
Glycol monomethyl ether drips off in 2h, drips off rear isothermal reaction 2h；
(2) 70 DEG C are warming up to, reaction system stirs while adding 1- 1-cyanoethyl-2-methylimidazole, isothermal reaction 1-2h；
(3) reaction system stirs while adding dimethylethanolamine, isothermal reaction 2h；
(4) reaction system stirs while adding chitosan, isothermal reaction 2h；Be down to room temperature to get.
Embodiment 3
Large arch dam water paint curing agent, includes the following parts by weight: 1 weight of methyl diphenylene diisocyanate
Part, 2.5 parts by weight of poly glycol monomethyl ether, 1 parts by weight of 1- 1-cyanoethyl-2-methylimidazole, 2.5 parts by weight of dimethylethanolamine,
4 parts by weight of chitosan.
Preparation method, comprising the following steps:
(1) methyl diphenylene diisocyanate is dissolved in methylene chloride, is heated to 55 DEG C of constant temperature, side stirring, which is compiled, instills second
Glycol monomethyl ether drips off in 2h, drips off rear isothermal reaction 1.5h；
(2) 75 DEG C are warming up to, reaction system stirs while adding 1- 1-cyanoethyl-2-methylimidazole, isothermal reaction 1.5h；
(3) reaction system stirs while adding dimethylethanolamine, isothermal reaction 1.5h；
(4) reaction system stirs while adding chitosan, isothermal reaction 1.5h；Be down to room temperature to get.
The preparation of 4 large arch dam waterborne epoxy coatings of embodiment
A batch waterborne epoxy coatings, formula such as following table is made.
The performance for testing above-mentioned waterborne epoxy coatings, as a result see the table below.
| Number | Viscosity (applies -4 glasss, s) | Solid part % | Coating thickness | VOC |
| Sample 1 | 21±2 | 81 | 104 | 172 |
| Sample 2 | 21±2 | 81 | 107 | 176 |
Claims (4)
1. a kind of large arch dam water paint curing agent, it is characterised in that: include the following parts by weight: diphenyl methane two
1 parts by weight of isocyanates, poly glycol monomethyl ether 2-3 parts by weight, 1 parts by weight of 1- 1-cyanoethyl-2-methylimidazole, dimethyl ethanol
Amine 2-3 parts by weight, chitosan 2-10 parts by weight.
2. a kind of large arch dam water paint curing agent according to claim 1, it is characterised in that: including following parts by weight
Component: 1 parts by weight of methyl diphenylene diisocyanate, 2.5 parts by weight of poly glycol monomethyl ether, 1- cyanoethyl -2- methyl miaow
1 parts by weight of azoles, 2.5 parts by weight of dimethylethanolamine, 4 parts by weight of chitosan.
3. a kind of preparation method of large arch dam water paint curing agent, it is characterised in that: the following steps are included:
(1) methyl diphenylene diisocyanate is dissolved in methylene chloride, is heated to 50-60 DEG C of constant temperature, side stirring, which is compiled, instills second
Glycol monomethyl ether drips off in 2h, drips off rear isothermal reaction 1-2h；
(2) it is warming up to 70-80 DEG C, reaction system stirs while adding 1- 1-cyanoethyl-2-methylimidazole, isothermal reaction 1-2h；
(3) reaction system stirs while adding dimethylethanolamine, isothermal reaction 1-2h；
(4) reaction system stirs while adding chitosan, isothermal reaction 1-2h；Be down to room temperature to get.
4. a kind of preparation method of large arch dam water paint curing agent according to claim 2, it is characterised in that: each original
The dosage of material are as follows: 1 parts by weight of methyl diphenylene diisocyanate, poly glycol monomethyl ether 2-3 parts by weight, 1- cyanoethyl -2- first
1 parts by weight of base imidazoles, dimethylethanolamine 2-3 parts by weight, chitosan 2-10 parts by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910344288.7A CN110396178A (en) | 2019-04-26 | 2019-04-26 | A kind of large arch dam water paint curing agent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910344288.7A CN110396178A (en) | 2019-04-26 | 2019-04-26 | A kind of large arch dam water paint curing agent |
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| CN110396178A true CN110396178A (en) | 2019-11-01 |
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| CN201910344288.7A Pending CN110396178A (en) | 2019-04-26 | 2019-04-26 | A kind of large arch dam water paint curing agent |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111234168A (en) * | 2020-03-05 | 2020-06-05 | 合肥安利聚氨酯新材料有限公司 | Nonionic neutralizer and preparation method thereof, waterborne polyurethane and preparation method and application thereof |
| CN112694598A (en) * | 2020-12-18 | 2021-04-23 | 江西瀚泰新材料科技有限公司 | Curing agent composition for water-based two-component coating |
| CN114656823A (en) * | 2022-04-06 | 2022-06-24 | 张家港市天源制漆涂装有限公司 | Water-based epoxy heavy-duty anticorrosive paint and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10176031A (en) * | 1996-12-19 | 1998-06-30 | Asahi Chem Ind Co Ltd | Curing agent composition and coating composition containing the same |
| CN106543865A (en) * | 2016-10-26 | 2017-03-29 | 上海正欧实业有限公司 | A kind of preparation method of aqueous epoxy coating |
| CN106589833A (en) * | 2016-12-31 | 2017-04-26 | 铜陵华科电子材料有限公司 | Curing agent material formula of environment-friendly copper-clad plate without halogen or antimony |
| CN106675027A (en) * | 2016-12-31 | 2017-05-17 | 铜陵华科电子材料有限公司 | Formula for high-TG polyimide copper-clad plate curing agent material |
| CN109593182A (en) * | 2018-11-08 | 2019-04-09 | 湖南湘江关西涂料有限公司 | Non-ion aqueous blocked polyisocyanates curing agent and preparation method thereof, water paint |
-
2019
- 2019-04-26 CN CN201910344288.7A patent/CN110396178A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10176031A (en) * | 1996-12-19 | 1998-06-30 | Asahi Chem Ind Co Ltd | Curing agent composition and coating composition containing the same |
| CN106543865A (en) * | 2016-10-26 | 2017-03-29 | 上海正欧实业有限公司 | A kind of preparation method of aqueous epoxy coating |
| CN106589833A (en) * | 2016-12-31 | 2017-04-26 | 铜陵华科电子材料有限公司 | Curing agent material formula of environment-friendly copper-clad plate without halogen or antimony |
| CN106675027A (en) * | 2016-12-31 | 2017-05-17 | 铜陵华科电子材料有限公司 | Formula for high-TG polyimide copper-clad plate curing agent material |
| CN109593182A (en) * | 2018-11-08 | 2019-04-09 | 湖南湘江关西涂料有限公司 | Non-ion aqueous blocked polyisocyanates curing agent and preparation method thereof, water paint |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111234168A (en) * | 2020-03-05 | 2020-06-05 | 合肥安利聚氨酯新材料有限公司 | Nonionic neutralizer and preparation method thereof, waterborne polyurethane and preparation method and application thereof |
| CN112694598A (en) * | 2020-12-18 | 2021-04-23 | 江西瀚泰新材料科技有限公司 | Curing agent composition for water-based two-component coating |
| CN114656823A (en) * | 2022-04-06 | 2022-06-24 | 张家港市天源制漆涂装有限公司 | Water-based epoxy heavy-duty anticorrosive paint and preparation method thereof |
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