CN107903764A - A kind of long-acting type water-thinned epoxy zinc-rich anti-corrosion primer and its coating process - Google Patents
A kind of long-acting type water-thinned epoxy zinc-rich anti-corrosion primer and its coating process Download PDFInfo
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- CN107903764A CN107903764A CN201711177381.0A CN201711177381A CN107903764A CN 107903764 A CN107903764 A CN 107903764A CN 201711177381 A CN201711177381 A CN 201711177381A CN 107903764 A CN107903764 A CN 107903764A
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
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- 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
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/106—Anti-corrosive paints containing metal dust containing Zn
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2202/00—Metallic substrate
- B05D2202/10—Metallic substrate based on Fe
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- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a kind of long-acting type water-thinned epoxy zinc-rich anti-corrosion primer and its coating process, which is the mixture of component A and B, and by weight, the mixed proportion of the component A and B is 4:1~6:1；Wherein, the component A is the composition of following mass parts material：5~8 parts of epoxy hardener, 78~85 parts of zinc powder, 0.5~2 part of powdery anti-settling agent, 0.5~1 part of liquid anti-settling agent, 8~15 parts of cosolvent, 0.1~0.3 part of defoamer and anti-0.5~1 part of flash rusting agent；The component B is the composition of following mass parts material：80~90 parts of aqueous epoxy emulsion, 10~15 parts of water, 0.5~1 part of fungicide, 1~2 part of propane diols and defoamer are appropriate.
Description
Technical Field
The invention belongs to a coating in the field of chemical industry, and particularly relates to a water-based epoxy zinc-rich anticorrosive primer for a building steel structure and a coating method thereof.
Background
At present, the most applied long-acting type anticorrosion primer for the building steel structure is a solvent type epoxy zinc-rich primer. However, with the increasing awareness of environmental protection and the health of environmental regulations, the application of the conventional solvent-based coating is increasingly limited due to the Volatile Organic Compounds (VOC) and the Harmful Air Pollutants (HAP). Therefore, the development and popularization of the low-VOC and even zero-VOC environment-friendly water-based anticorrosive paint are great tendency, which also prompts the research on the water-based epoxy zinc-rich primer.
The water-based epoxy zinc-rich primer in the prior art, such as Chinese patent document with application number 201510066224.7, discloses a heavy-duty two-component water-based epoxy zinc-rich primer and a preparation method thereof, although the product uses water as a diluent, because the viscosity of epoxy resin is very high, a large amount of active diluent and cosolvent are needed, a lot of organic solvents are inevitably contained, the smell is pungent, and the viscosity is high, so that the construction and film-forming performance are not facilitated.
The Chinese patent document with the application number of 201610310867.6 discloses a water-based epoxy zinc-rich primer, which has poor durability and no abnormality only after 168 hours of salt water resistance (3%), which is far from reaching the product standard of zinc-rich paint.
Disclosure of Invention
The invention aims to solve the technical problem of providing the long-acting water-based epoxy zinc-rich anticorrosive primer with excellent performance, simple and convenient construction process and good anticorrosive durability.
The technical problem to be solved can be implemented by the following technical scheme.
The long-acting water-based epoxy zinc-rich anticorrosive primer is characterized by being a mixture of a component A and a component B, wherein the mixing ratio of the component A to the component B is 4: 1-6: 1 in percentage by weight; wherein,
the component A is a composition of the following substances in parts by mass: 5-8 parts of an epoxy curing agent, 78-85 parts of zinc powder, 0.5-2 parts of a powdery anti-settling agent, 0.5-1 part of a liquid anti-settling agent, 8-15 parts of a cosolvent, 0.1-0.3 part of a defoaming agent and 0.5-1 part of an anti-flash rust agent;
the component B is a composition of the following substances in parts by mass: 80-90 parts of water-based epoxy emulsion, 10-15 parts of water, 0.5-1 part of bactericide, 1-2 parts of propylene glycol and a proper amount of defoaming agent.
As a further improvement of the technical scheme, the epoxy curing agent is a polyamine modified waterborne polyamide curing agent. Low viscosity and good wettability, and is suitable for preparing high filling paint.
As a further improvement of the technical scheme, the zinc powder is one or a mixture of two of spherical zinc powder and flake zinc powder with the sizes of 325 meshes, 500 meshes and 800 meshes.
As a further improvement of the technical scheme, the powdery anti-settling agent is one or a mixture of two of gas silicon, water-based bentonite and water-based polyamide wax.
As a further improvement of the technical scheme, the cosolvent is at least one of propylene glycol monomethyl ether, propylene glycol butyl ether and ethylene glycol butyl ether.
Also as a further improvement of the technical scheme, the aqueous epoxy emulsion is a solid epoxy resin water dispersion emulsion, the epoxy equivalent is 450-600 g/eq, the viscosity is low, the VOC content is low, and the solid content is 52-55%.
Further, the component A is prepared by the following preparation method:
①, accurately weighing the cosolvent, adding the cosolvent into the stirring kettle, and slowly stirring;
②, accurately weighing the epoxy curing agent, and slowly adding the epoxy curing agent into the stirring kettle in the stirring process;
③, stirring, and adding the defoamer, the flash rust inhibitor, the liquid anti-settling agent, the powder anti-settling agent and the zinc powder into the mixture in sequence;
④, after the zinc powder is added, the stirring speed is increased to 1000 rpm, and the stirring is continued for 20-30 minutes to obtain the component A.
Further, the component B is prepared by the following method:
①, adding propylene glycol, a defoaming agent and a bactericide into deionized water according to the formula amount, and stirring for 5min at the rotating speed of 300-500 r/min to obtain a fully mixed solution;
②, adding the water-based epoxy emulsion with the formula amount into the mixed solution, and stirring at 700-800 r/m to obtain the component B.
The invention also provides a coating method of the anti-corrosion primer.
The method comprises the following steps:
(1) substrate treatment:
removing iron rust, oxide skin and other dirt on the surface of the substrate by adopting a spray rust removal method to ensure that the rust removal grade reaches the specification of GB/T8923The surface roughness reaches the medium-grade requirement specified in GB/T13288.1;
(2) coating:
and (3) coating for 2-3 times by adopting a brush coating or air spraying mode, wherein the spraying interval is 6-24 hours, and the final film thickness is 70-90 mu m.
Compared with the traditional solvent type epoxy zinc-rich anticorrosive primer, the long-acting water-based epoxy zinc-rich anticorrosive primer disclosed by the invention adopts water-based environment-friendly raw materials, so that the emission of harmful substances is greatly reduced, and the damage to the environment and constructors caused by the accumulation of a large amount of solvents is eliminated. In addition, the invention adopts the low-viscosity epoxy emulsion and the curing agent, and can obtain a low-viscosity product without adding a large amount of epoxy diluent, so that the construction process is simple and convenient, the film-forming property is good, the corrosion resistance and the durability are good, and the invention is suitable for building steel structural members with high requirements on corrosion resistance.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the present invention is not limited to the following examples.
Table 1:
the component ratios of the long-life water-borne epoxy zinc rich primer in examples 1 to 5 are shown in table 1 below. The preparation method of the long-acting water-based epoxy zinc-rich primer in the embodiments 1 to 5 is as follows:
(1) the preparation method of the component A comprises the following steps:
①, accurately weighing the cosolvent, adding the cosolvent into the stirring kettle, and slowly stirring;
②, accurately weighing the epoxy curing agent, and slowly adding the epoxy curing agent into the stirring kettle in the stirring process;
③, stirring, and adding the defoamer, the flash rust inhibitor, the liquid anti-settling agent, the powder anti-settling agent and the zinc powder into the mixture in sequence;
④, after the zinc powder is added, the stirring speed is increased to 1000 rpm, and the stirring is continued for 20-30 minutes to obtain the component A.
(2) The preparation method of the component B comprises the following steps:
①, adding propylene glycol, a defoaming agent and a bactericide into deionized water according to the formula amount, and stirring for 5min at the rotating speed of 300-500 r/min to obtain full mixing;
②, adding the aqueous epoxy emulsion with the formula amount into the mixed solution, and stirring at 700-800 r/m to obtain the component B.
(3) And uniformly mixing the component A and the component B in a weight ratio of 4:1 to obtain the long-acting water-based epoxy zinc-rich anticorrosive primer.
The properties of the products of examples 1 to 5 were determined according to HG/T3668-2009 "Zinc-rich primer" standard and are shown in Table 2.
Table 2:
Claims (9)
1. The long-acting water-based epoxy zinc-rich anticorrosive primer is characterized by being a mixture of a component A and a component B, wherein the mixing ratio of the component A to the component B is 4: 1-6: 1 in percentage by weight; wherein,
the component A is a composition of the following substances in parts by mass: 5-8 parts of an epoxy curing agent, 78-85 parts of zinc powder, 0.5-2 parts of a powdery anti-settling agent, 0.5-1 part of a liquid anti-settling agent, 8-15 parts of a cosolvent, 0.1-0.3 part of a defoaming agent and 0.5-1 part of an anti-flash rust agent;
the component B is a composition of the following substances in parts by mass: 80-90 parts of water-based epoxy emulsion, 10-15 parts of water, 0.5-1 part of bactericide, 1-2 parts of propylene glycol and a proper amount of defoaming agent.
2. The long-acting waterborne epoxy zinc-rich anti-corrosion primer as claimed in claim 1, wherein the epoxy curing agent is polyamine-modified waterborne polyamide curing agent.
3. The long-acting water-based epoxy zinc-rich anti-corrosive primer as claimed in claim 1, wherein the zinc powder is one or a mixture of two of spherical zinc powder and flake zinc powder with the sizes of 325 meshes, 500 meshes and 800 meshes.
4. The long-acting water-based epoxy zinc-rich anti-corrosion primer as claimed in claim 1, wherein the powdery anti-settling agent is one or a mixture of two of gas silicon, water-based bentonite and water-based polyamide wax.
5. The long-acting water-based epoxy zinc-rich antiseptic primer as claimed in claim 1, wherein the cosolvent is at least one of propylene glycol monomethyl ether, propylene glycol butyl ether and ethylene glycol butyl ether.
6. The long-acting water-based epoxy zinc-rich anti-corrosion primer as claimed in claim 1, wherein the water-based epoxy emulsion is a solid epoxy resin water dispersion emulsion, the epoxy equivalent is 450-600 g/eq, and the solid content of the low viscosity and the low VOC content is 52-55%.
7. The long-acting water-based epoxy zinc-rich anti-corrosion primer as claimed in claim 1, wherein the component A is prepared by the following method:
①, accurately weighing the cosolvent, adding the cosolvent into the stirring kettle, and slowly stirring;
②, accurately weighing the epoxy curing agent, and slowly adding the epoxy curing agent into the stirring kettle in the stirring process;
③, stirring, and adding the defoamer, the flash rust inhibitor, the liquid anti-settling agent, the powder anti-settling agent and the zinc powder into the mixture in sequence;
④, after the zinc powder is added, the stirring speed is increased to 1000 rpm, and the stirring is continued for 20-30 minutes to obtain the component A.
8. The long-acting water-based epoxy zinc-rich anti-corrosion primer as claimed in claim 1, wherein the component B is prepared by the following method:
①, adding propylene glycol, a defoaming agent and a bactericide into deionized water according to the formula amount, and stirring for 5min at the rotating speed of 300-500 r/min to obtain a fully mixed solution;
②, adding the water-based epoxy emulsion with the formula amount into the mixed solution, and stirring at 700-800 r/m to obtain the component B.
9. A coating method of the long-acting water-based epoxy zinc-rich anti-corrosion primer according to any one of claims 1 to 8, which is characterized by comprising the following steps:
(1) substrate treatment:
removing iron rust, oxide skin and other dirt on the surface of the substrate by adopting a spray rust removal method to ensure that the rust removal grade reaches the specification of GB/T8923The surface roughness reaches the medium-grade requirement specified in GB/T13288.1;
(2) coating:
and (3) coating for 2-3 times by adopting a brush coating or air spraying mode, wherein the spraying interval is 6-24 hours, and the final film thickness is 70-90 mu m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711177381.0A CN107903764A (en) | 2017-11-23 | 2017-11-23 | A kind of long-acting type water-thinned epoxy zinc-rich anti-corrosion primer and its coating process |
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| CN201711177381.0A CN107903764A (en) | 2017-11-23 | 2017-11-23 | A kind of long-acting type water-thinned epoxy zinc-rich anti-corrosion primer and its coating process |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109233559A (en) * | 2018-08-06 | 2019-01-18 | 浩力森涂料（上海）有限公司 | A kind of high-performance water-based container zinc-rich paint and its manufacturing method |
| CN109294399A (en) * | 2018-10-16 | 2019-02-01 | 无锡市太湖防腐材料有限公司 | Steel surface anti-corrosion water-based epoxy zinc-rich primer and preparation method thereof |
| CN109468027A (en) * | 2019-01-07 | 2019-03-15 | 浙江波磊涂料有限公司 | A kind of epoxy zinc rich primer and preparation method thereof |
| CN109608983A (en) * | 2018-11-30 | 2019-04-12 | 镇江利德尔复合材料有限公司 | A kind of anticorrosive coating and preparation method thereof for underground petroleum storage tank |
| CN110591505A (en) * | 2019-09-26 | 2019-12-20 | 中国海洋石油集团有限公司 | Thick-coating type water-based epoxy zinc-rich anticorrosive paint and preparation method thereof |
| CN110903737A (en) * | 2019-11-29 | 2020-03-24 | 深圳市肯德高建材有限公司 | Environment-friendly two-component water-based epoxy zinc-rich special coating composition and preparation method thereof |
| CN115260866A (en) * | 2022-06-21 | 2022-11-01 | 安徽省宏忆新型材料有限公司 | Novel composite material and rotary well lid manufactured by using same |
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| CN102863874A (en) * | 2012-09-27 | 2013-01-09 | 中远关西涂料化工（天津）有限公司 | Water-base epoxy zinc-rich priming paint and preparation method thereof |
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2017
- 2017-11-23 CN CN201711177381.0A patent/CN107903764A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102863874A (en) * | 2012-09-27 | 2013-01-09 | 中远关西涂料化工（天津）有限公司 | Water-base epoxy zinc-rich priming paint and preparation method thereof |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109233559A (en) * | 2018-08-06 | 2019-01-18 | 浩力森涂料（上海）有限公司 | A kind of high-performance water-based container zinc-rich paint and its manufacturing method |
| CN109294399A (en) * | 2018-10-16 | 2019-02-01 | 无锡市太湖防腐材料有限公司 | Steel surface anti-corrosion water-based epoxy zinc-rich primer and preparation method thereof |
| CN109608983A (en) * | 2018-11-30 | 2019-04-12 | 镇江利德尔复合材料有限公司 | A kind of anticorrosive coating and preparation method thereof for underground petroleum storage tank |
| CN109468027A (en) * | 2019-01-07 | 2019-03-15 | 浙江波磊涂料有限公司 | A kind of epoxy zinc rich primer and preparation method thereof |
| CN110591505A (en) * | 2019-09-26 | 2019-12-20 | 中国海洋石油集团有限公司 | Thick-coating type water-based epoxy zinc-rich anticorrosive paint and preparation method thereof |
| CN110591505B (en) * | 2019-09-26 | 2021-07-13 | 中国海洋石油集团有限公司 | Thick-coating type water-based epoxy zinc-rich anticorrosive paint and preparation method thereof |
| CN110903737A (en) * | 2019-11-29 | 2020-03-24 | 深圳市肯德高建材有限公司 | Environment-friendly two-component water-based epoxy zinc-rich special coating composition and preparation method thereof |
| CN110903737B (en) * | 2019-11-29 | 2021-06-25 | 深圳市肯德高建材有限公司 | Environment-friendly two-component water-based epoxy zinc-rich special coating composition and preparation method thereof |
| CN115260866A (en) * | 2022-06-21 | 2022-11-01 | 安徽省宏忆新型材料有限公司 | Novel composite material and rotary well lid manufactured by using same |
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