CN112341902A - Water-based two-component epoxy transparent primer for integrated board and preparation method thereof - Google Patents
Water-based two-component epoxy transparent primer for integrated board and preparation method thereof Download PDFInfo
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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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- 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
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/002—Priming paints
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- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/43—Thickening agents
- C09D7/44—Combinations of two or more thickening agents
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C08L2201/10—Transparent films; Clear coatings; Transparent materials
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- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention relates to a water-based double-component epoxy transparent primer for an integrated board and a preparation method thereof, and the primer mainly comprises a component A and a component B, wherein the component A and the component B are mixed according to the weight ratio of 1: 0.15-0.35, wherein the component A is mainly prepared from the following components in parts by weight: 1.5-2.5 parts of wetting agent, 20-35 parts of thickening agent, 500 parts of water-based epoxy resin 400-containing material, 1.5-2.5 parts of flatting agent, 2-2.5 parts of defoaming agent, 2.5-3.5 parts of bactericide and water which are complemented until the total amount of the component A is 1000 parts. The primer overcomes the defects of poor adhesion, environmental pollution, complex process, high energy consumption and the like of the existing primer for the integrated board, forms a three-dimensional network structure by crosslinking and curing the waterborne epoxy resin and the curing agent, greatly improves the compactness, the adhesion, the salt and alkali resistance and the sealing property of a paint film under the matching of various optimized components and optimized dosage proportion in a system, and has the advantages of simple construction, environmental protection and low energy consumption.
Description
Technical Field
The invention relates to a water-based double-component epoxy transparent primer for an integrated board and a preparation method thereof, and the primer is applied to the field of primer preparation.
Background
The integrated plate (calcium silicate plate) has the advantages of no influence of external construction environment, simple construction and the like, is generally subjected to factory customized coating, and has the requirements on coating such as simple coating, high adhesive force, strong alkali resistance and the like. With the rapid development of the exterior wall insulation integrated board decoration industry in recent years, the market has high requirements on the coating for the integrated board, in particular to a primer with high permeability and high adhesion and a finish coat with high compactness and high hydrophobicity, as reported in Chinese patent 'a water-based two-component polyurethane finish varnish and a preparation method and application thereof' (CN 109971335A). And along with the improvement of intergral template output, often need the tectorial membrane in order to avoid colliding with in transportation and installation on the integrative board of shaping, the cutting of most of integrative boards is also gone on under the circumstances of tectorial membrane simultaneously. However, most of the integrated boards on the market have poor adhesion between the coating and the substrate, so that the board often has the conditions of edge explosion, falling off and the like during cutting. In addition, a paint film often falls off due to a situation such as a glue application and tearing during actual plate construction.
The existing coating process of the integrated plate generally comprises the following steps: 1. one-component, general water-borne primers were used: adhesion is difficult to expect, especially under severe conditions such as low temperature and high temperature areas; 2. use of an oily primer: the paint runs counter to the environmental protection concept advocated at present, and the problem of poor adhesive force exists in the matching use of oil and water; 3. use of UV primers (this is also currently most common): the process is complicated (if the integrated plate needs to be polished), and the energy consumption is high (the forming needs to use an ultraviolet lamp to irradiate the paint film).
Therefore, it is desirable to provide a water-based two-component epoxy transparent primer for an integrated board, which has a dense coating film, high adhesion, excellent salt-forming alkali resistance, excellent sealing property, simple construction, environmental protection and low energy consumption, and a preparation method thereof.
Disclosure of Invention
In order to overcome the defects of poor adhesion, no environmental protection, complex process, high energy consumption and the like of the primer for the integral plate, the invention provides the water-based double-component epoxy transparent primer for the integral plate and the preparation method thereof.
The technical scheme of the invention is as follows:
a water-based double-component epoxy transparent primer for an integrated board mainly comprises a component A and a component B, wherein the component A and the component B are mixed according to the weight ratio of 1: 0.15 to 0.35 of the raw materials are mixed,
the component A is mainly prepared from the following components in parts by weight:
wetting agent 1.5-2.5 parts
20-35 parts of thickening agent
400 portions of water-based epoxy resin
1.5-2.5 parts of flatting agent
2-2.5 parts of defoaming agent
2.5-3.5 parts of bactericide
Water is added until the total amount of the component A is 1000 parts;
wherein the water-based epoxy resin is bisphenol A epoxy resin;
the component B consists of a water-based amine curing agent or a water-based amine curing agent aqueous solution, wherein the water-based amine curing agent aqueous solution consists of a water-based amine curing agent and water, and the mass percentage of the water-based amine curing agent is more than or equal to 70%.
The waterborne two-component epoxy transparent primer for the integrated board has lower VOC emission, is green and environment-friendly, is crosslinked and cured by waterborne epoxy resin (film forming material) and a curing agent after being coated to form a three-dimensional network structure, endows a paint film with extremely high crosslinking density and anti-permeability under the matching of various optimized components and optimized dosage proportion in a system, has high adhesive force and excellent sealing property, meets the primer index requirements in national standards GB 9755-. Has excellent adhesion (peel resistance of the integrated plate), sealing property and alkali resistance compared with similar products in the same row. And the construction does not need polishing and ultraviolet lamp irradiation, the process is simple, and the energy consumption is low. The bisphenol A type epoxy resin is the most common and widely used among various types of epoxy resins, and the epoxy resin can be matched with a curing agent to achieve the required effect
The component A and the component B of the water-based double-component epoxy transparent primer for the integrated board are stored separately at ordinary times, the two components are mixed when in use, the gel time is about 25-35 minutes, the operation time is about 30 minutes, and the final curing time of a paint film at the temperature of more than 10 ℃ is about 2 hours; if the component A and the component B are mixed evenly and then diluted by 2 to 3 times of water, the operation time can be prolonged to 1 to 2 hours, and if the mixture is baked at 30 to 50 ℃, the curing time can be accelerated, and the physical properties of the coating film can be rapidly improved.
Preferably, the bisphenol a type epoxy resin is jechen JCW 3551G.
The selection of the epoxy resin is a relatively ideal option which is verified by experiments and practical production application, and certainly, the JCW3551G is emphasized to be a never unique option, for example, Wanhua 0901 epoxy resin can also be adopted.
The thickening agent is a polyurethane thickening agent.
To achieve the desired viscosity, the use of two or more polyurethane-based thickeners in this patent can achieve relatively desirable construction and storage viscosities.
The polyurethane thickener is one or any combination of more than two of PU thickener, Gaotai XS-71 thickener or RM-8W thickener.
The thickening agents are relatively easily available in the coating industry, and can enable the paint to achieve good construction and storage effects when used in the system.
Preferably, the wetting agent is one or any combination of two of a nonionic wetting agent and an alkyl polyoxyethylene ether wetting agent, the leveling agent is a polyurethane leveling agent, the defoaming agent is a polyether siloxane copolymer defoaming agent, and the bactericide is a common kaempferia bactericide.
Further, the wetting agent is Kenain LCN070, the flatting agent is BYK378, the defoaming agent is Digao TEGO822, and the bactericide is LXE.
The selected wetting agent can achieve the substrate wetting effect, in particular to an integrated plate (calcium silicate plate); the selected leveling agent and the defoaming agent can enable the paint film to achieve a good surface effect; the use of the bactericide enables the product to achieve the desired storage effect without spoilage. The preferred anti-foaming agent contributes significantly to the tendency of the varnish to develop cratering problems.
The preparation method of the water-based two-component epoxy transparent primer for the integrated board comprises the following steps of:
preparing a component A:
1. sequentially adding a wetting agent and a thickening agent which accounts for 1/7-1/2 of the total weight of the thickening agent into 230 portions of 200-230 portions of water while stirring at the rotating speed of 500-600r/min, and dispersing for 5-10min until the mixture is uniformly mixed;
2. sequentially adding the water-based epoxy resin, the flatting agent, the rest thickening agent, the defoaming agent, the bactericide and the rest water into the mixture obtained in the step (1), and then dispersing and stirring at the rotating speed of 700-900r/min for at least 10min to ensure that the viscosity is 60-70ku at 25 ℃;
(II) preparing a component B:
the component B is prepared into aqueous solution of aqueous amine curing agent by directly adopting aqueous amine curing agent or mixing water and aqueous amine curing agent;
and (III) mixing the component A and the component B when in use:
and mixing the component A and the component B to prepare the water-based two-component epoxy transparent primer for the integrated board.
The preparation method of the aqueous double-component epoxy transparent primer for the integrated board is simple in process, convenient and fast.
Compared with the prior art, the method has the following advantages:
1) the water-based two-component epoxy transparent primer for the integrated board has lower VOC emission, is green and environment-friendly, is crosslinked and cured by the water-based epoxy resin (film forming material) and the curing agent after being coated to form a three-dimensional network structure, and endows a paint film with extremely high crosslinking density and penetration resistance under the matching of various optimized components and optimized dosage proportion in the system, and has high adhesive force, excellent sealing property and excellent alkali resistance; the construction does not need polishing and ultraviolet lamp irradiation, the working procedure is simple, and the energy consumption is low;
2) the water-based double-component epoxy transparent primer for the integrated plate can be widely applied to pre-coating of the integrated plate, can replace the UV primer for the current integrated plate, and can also be used as the common primer for inner and outer walls;
3) the preparation method of the aqueous double-component epoxy transparent primer for the integrated board is simple in process, convenient and fast.
Detailed Description
The technical solution of the present invention will be described in detail with reference to the embodiments of the specification.
Example 1
The invention relates to a water-based double-component epoxy transparent primer for an integrated board, which mainly comprises a component A and a component B, wherein the component A and the component B are mixed according to the weight ratio of 1: 0.3, the mixture is mixed,
the component A is mainly prepared from the following components in parts by weight:
wetting agent 2 parts
28 portions of thickening agent
450 parts of waterborne epoxy resin
Leveling agent 2 parts
Defoaming agent 2.3 parts
3 portions of bactericide
Water is added until the total amount of the component A is 1000 parts;
wherein the water-based epoxy resin is bisphenol A epoxy resin;
the component B consists of a water-based amine curing agent or a water-based amine curing agent aqueous solution, wherein the water-based amine curing agent aqueous solution consists of a water-based amine curing agent and water, and the mass percentage of the water-based amine curing agent is 70%.
The bisphenol A epoxy resin is Jechow JCW 3551G.
The thickening agent is a polyurethane thickening agent.
The polyurethane thickener is a PU thickener.
The wetting agent is a non-ionic wetting agent, the leveling agent is a polyurethane leveling agent, the defoaming agent is a polyether siloxane copolymer defoaming agent, and the bactericide is a common kasong bactericide.
The preparation method of the water-based two-component epoxy transparent primer for the integrated board comprises the following steps of:
preparing a component A:
1. sequentially adding a wetting agent and a thickening agent accounting for 1/4 parts of the total weight of the thickening agent into 210 parts of water while stirring at the rotating speed of 550r/min, and dispersing for 8min until the mixture is uniformly mixed;
2. sequentially adding the water-based epoxy resin, the flatting agent, the rest thickening agent, the defoaming agent, the bactericide and the rest water into the mixture obtained in the step (1), and then dispersing and stirring at the rotating speed of 800r/min for 10min to ensure that the viscosity is 65ku at 25 ℃;
(II) preparing a component B:
the component B is prepared into aqueous solution of aqueous amine curing agent by directly adopting aqueous amine curing agent or mixing water and aqueous amine curing agent;
and (III) mixing the component A and the component B when in use:
and mixing the component A and the component B to prepare the water-based two-component epoxy transparent primer for the integrated board.
Example 2
The invention relates to a water-based double-component epoxy transparent primer for an integrated board, which mainly comprises a component A and a component B, wherein the component A and the component B are mixed according to the weight ratio of 1: 0.15 of the above-mentioned components were mixed,
the component A is mainly prepared from the following components in parts by weight:
wetting agent 2.5 parts
20 portions of thickening agent
500 parts of waterborne epoxy resin
Leveling agent 1.5 parts
2.5 portions of defoaming agent
2.5 parts of bactericide
Water is added until the total amount of the component A is 1000 parts;
wherein the water-based epoxy resin is bisphenol A epoxy resin;
the component B consists of a water-based amine curing agent or a water-based amine curing agent aqueous solution, wherein the water-based amine curing agent aqueous solution consists of a water-based amine curing agent and water, and the mass percentage of the water-based amine curing agent is 80%.
The bisphenol A epoxy resin is Jechow JCW 3551G.
The thickening agent is a polyurethane thickening agent.
The polyurethane thickener is a Gaotai XS-71 thickener.
The wetting agent is an alkyl polyoxyethylene ether wetting agent, the leveling agent is a polyurethane leveling agent, the defoaming agent is a polyether siloxane copolymer defoaming agent, and the bactericide is a common kasong bactericide.
The preparation method of the water-based two-component epoxy transparent primer for the integrated board comprises the following steps of:
preparing a component A:
1. sequentially adding a wetting agent and a thickening agent accounting for 1/7 parts of the total weight of the thickening agent into 230 parts of water at the rotation speed of 500r/min while stirring, and dispersing for 5min until the mixture is uniformly mixed;
2. sequentially adding the water-based epoxy resin, the flatting agent, the rest thickening agent, the defoaming agent, the bactericide and the rest water into the mixture obtained in the step (1), and then dispersing and stirring at the rotating speed of 900r/min for 12min to ensure that the viscosity is 60ku at 25 ℃;
(II) preparing a component B:
the component B is prepared into aqueous solution of aqueous amine curing agent by directly adopting aqueous amine curing agent or mixing water and aqueous amine curing agent;
and (III) mixing the component A and the component B when in use:
and mixing the component A and the component B to prepare the water-based two-component epoxy transparent primer for the integrated board.
Example 3
The invention relates to a water-based double-component epoxy transparent primer for an integrated board, which mainly comprises a component A and a component B, wherein the component A and the component B are mixed according to the weight ratio of 1: 0.35 of the amount of the components to be mixed,
the component A is mainly prepared from the following components in parts by weight:
wetting agent 1.5 parts
35 portions of thickening agent
400 parts of waterborne epoxy resin
Leveling agent 2.5 parts
2 portions of defoaming agent
3.5 parts of bactericide
Water is added until the total amount of the component A is 1000 parts;
wherein the water-based epoxy resin is bisphenol A epoxy resin;
the component B consists of a water-based amine curing agent or a water-based amine curing agent aqueous solution, wherein the water-based amine curing agent aqueous solution consists of a water-based amine curing agent and water, and the mass percentage of the water-based amine curing agent is 75%.
The bisphenol A epoxy resin is Jechow JCW 3551G.
The thickening agent is a polyurethane thickening agent.
The polyurethane thickener is RM-8W.
The wetting agent is any combination of a non-ionic wetting agent and an alkyl polyoxyethylene ether wetting agent, the leveling agent is a polyurethane leveling agent, the defoaming agent is a polyether siloxane copolymer defoaming agent, and the bactericide is a common kasong bactericide.
The preparation method of the water-based two-component epoxy transparent primer for the integrated board comprises the following steps of:
preparing a component A:
1. sequentially adding a wetting agent and a thickening agent accounting for 1/2 parts of the total weight of the thickening agent into 200 parts of water while stirring at the rotating speed of 600r/min, and dispersing for 0min until the mixture is uniformly mixed;
2. sequentially adding the water-based epoxy resin, the flatting agent, the rest thickening agent, the defoaming agent, the bactericide and the rest water into the mixture obtained in the step (1), and then dispersing and stirring at the rotating speed of 700r/min for 18min to ensure that the viscosity is 70ku at 25 ℃;
(II) preparing a component B:
the component B is prepared into aqueous solution of aqueous amine curing agent by directly adopting aqueous amine curing agent or mixing water and aqueous amine curing agent;
and (III) mixing the component A and the component B when in use:
and mixing the component A and the component B to prepare the water-based two-component epoxy transparent primer for the integrated board.
Example 4
This example differs from example 1 in that:
the polyurethane thickener is any combination of a PU thickener and a high-Thai XS-71 thickener.
Example 5
This example differs from example 2 in that:
the polyurethane thickener is any combination of a Gaotai XS-71 thickener and RM-8W.
Example 6
This example differs from example 3 in that:
the polyurethane thickener is any combination of a PU thickener and RM-8W.
Example 7
This example differs from example 1 in that:
the polyurethane thickener is any combination of a PU thickener, a high-Thai XS-71 thickener and RM-8W.
The raw materials involved in the scheme are as follows:
wetting agent: kenain LCN070, manufactured by Kelaien chemical (China) Co., Ltd
Thickening agent: thickener of Gaotai XS-71 and RM-8W, PU
Water-based epoxy resin: george Cheng Shubang New Material science and technology Ltd, Jechen JCW3551G
Leveling agent: BYK378
Defoaming agent: digao TEGO822
And (3) bactericide: LXE
Aqueous amine curing agent: hansen, inc, hansen 8545, usa; huabang 7025/7026 available from Huabang insulating materials of Sony City (active ingredient accounting for 62-69% of the total mass)
Experimental data:
(I) paint performance detection
The detection method comprises the following steps:
the detection of the limited substance is referred to GB18582-2009,
the drying time (surface drying) detection is carried out according to GB/T1728-89 (method B);
the adhesive force performance test method comprises the following steps:
1. after the water-in-water integrated board is manufactured according to the normal working procedures, the water-based double-component epoxy transparent primer used for the integrated board is coated as a primer, the intermediate coating construction (roll coating or spray coating) is carried out after the primer is dried for 4 hours (the intermediate coating construction uses the intermediate coating emulsion paint used for the water-in-water coating), then the intermediate coating is dried for 8 hours, then the transparent adhesive tape is used for carrying out adhesion force violence test on the intermediate coating, and the coating condition is observed;
2. after the aqueous double-component epoxy transparent primer for the integrated plate is used as a primer for construction, carrying out a normal cutting experiment on the integrated plate, and observing the condition of a paint film;
other performance indexes are tested according to the requirements of the primers in GB/T9755-2014 and JG/T210-2018.
Control 1: bade GD5050 waterborne epoxy primer 17KG dress
Control 2: ponfert BMZ-5100XR UV primer, 17KG dress
TABLE 1 paint Performance test results
As can be seen from the table above, the waterborne two-component epoxy transparent primer for the integrated plate has better adhesive force, water resistance, alkali resistance, saltpetering alkali resistance and other performances than the waterborne epoxy primer of the comparison sample 1, does not need polishing and ultraviolet irradiation in the application property, and has better application property than the UV primer of the comparison sample 2.
Wherein, the results of adhesion test 1: the coating does not fall off or crack; results of adhesion test 2: the paint film of the plate is basically not cracked and skinned. The aqueous two-component epoxy transparent primer for the integrated board is particularly suitable for a prefabricating process (film coating, cutting and the like) of industrial coating of the integrated board, and has extremely high matching property with the process.
The two-component epoxy clear primer for integral panels and the method for preparing the same according to the present invention are not limited to the above-mentioned embodiments, and any modification or replacement according to the principles of the present invention is within the scope of the present invention.
Claims (6)
1. The water-based two-component epoxy transparent primer for the integrated board is characterized in that: the paint mainly comprises a component A and a component B, wherein the component A and the component B are mixed according to the weight ratio of 1: 0.15 to 0.35 of the raw materials are mixed,
the component A is mainly prepared from the following components in parts by weight:
wetting agent 1.5-2.5 parts
20-35 parts of thickening agent
400 portions of water-based epoxy resin
1.5-2.5 parts of flatting agent
2-2.5 parts of defoaming agent
2.5-3.5 parts of bactericide
Water is added until the total amount of the component A is 1000 parts;
wherein the water-based epoxy resin is bisphenol A epoxy resin;
the component B consists of a water-based amine curing agent or a water-based amine curing agent aqueous solution, wherein the water-based amine curing agent aqueous solution consists of a water-based amine curing agent and water, and the mass percentage of the water-based amine curing agent is more than or equal to 70%.
2. The waterborne two-component epoxy clear primer for integral panels according to claim 1, characterized in that: the bisphenol A epoxy resin is Jechow JCW 3551G.
3. The waterborne two-component epoxy clear primer for integral panels according to claim 1, characterized in that: the thickening agent is a polyurethane thickening agent.
4. The waterborne two-component epoxy clear primer for integral panels according to claim 3, characterized in that: the polyurethane thickener is one or any combination of more than two of PU thickener, Gaotai XS-71 thickener or RM-8W thickener.
5. The waterborne two-component epoxy clear primer for integral panels according to claim 1, characterized in that: the wetting agent is one or any combination of two of a non-ionic wetting agent and an alkyl polyoxyethylene ether wetting agent, the leveling agent is a polyurethane leveling agent, the defoaming agent is a polyether siloxane copolymer defoaming agent, and the bactericide is a common kaempferia bactericide.
6. Method for the preparation of a water-based two-component epoxy clear primer for integral panels according to any one of claims 1 to 5, characterized in that: comprises the following steps which are carried out in sequence:
preparing a component A:
1. sequentially adding a wetting agent and a thickening agent which accounts for 1/7-1/2 of the total weight of the thickening agent into 230 portions of 200-230 portions of water while stirring at the rotating speed of 500-600r/min, and dispersing for 5-10min until the mixture is uniformly mixed;
2. sequentially adding the water-based epoxy resin, the flatting agent, the rest thickening agent, the defoaming agent, the bactericide and the rest water into the mixture obtained in the step (1), and then dispersing and stirring at the rotating speed of 700-900r/min for at least 10min to ensure that the viscosity is 60-70ku at 25 ℃;
(II) preparing a component B:
the component B is prepared into aqueous solution of aqueous amine curing agent by directly adopting aqueous amine curing agent or mixing water and aqueous amine curing agent;
and (III) mixing the component A and the component B when in use:
and mixing the component A and the component B to prepare the water-based two-component epoxy transparent primer for the integrated board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN114316738A (en) * | 2021-12-30 | 2022-04-12 | 湖南宏泰新材料有限公司 | Epoxy transparent primer coating for water-based carbon fiber substrate fishing rod |
| CN114836104A (en) * | 2022-06-03 | 2022-08-02 | 江苏省朗晖实业发展有限公司 | Water-based environment-friendly paint for surfaces of packaging boxes |
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| CN114316738A (en) * | 2021-12-30 | 2022-04-12 | 湖南宏泰新材料有限公司 | Epoxy transparent primer coating for water-based carbon fiber substrate fishing rod |
| CN114836104A (en) * | 2022-06-03 | 2022-08-02 | 江苏省朗晖实业发展有限公司 | Water-based environment-friendly paint for surfaces of packaging boxes |
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Application publication date: 20210209 |