CN113088161A - Water-based epoxy primer with good anti-settling effect and preparation method thereof - Google Patents
Water-based epoxy primer with good anti-settling effect and preparation method thereof Download PDFInfo
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- CN113088161A CN113088161A CN202110582119.4A CN202110582119A CN113088161A CN 113088161 A CN113088161 A CN 113088161A CN 202110582119 A CN202110582119 A CN 202110582119A CN 113088161 A CN113088161 A CN 113088161A
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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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- 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
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/45—Anti-settling agents
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- Chemical & Material Sciences (AREA)
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
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Abstract
The invention discloses a water-based epoxy primer with good anti-settling effect and a preparation method thereof, wherein the water-based epoxy primer comprises the following raw materials, by weight, 35-55 parts of a water-based epoxy emulsion, 6-12 parts of a white pigment, 0.5-3 parts of a black pigment, 8-15 parts of an anti-rust filler, 0.5-1.5 parts of a cosolvent, 0.5-2.4 parts of a wetting dispersant, 0.1-0.5 part of an antifoaming agent, 0.2-1 part of an anti-settling auxiliary agent, 0.2-0.5 part of a base material wetting agent and 1-1.5 parts of a thickening agent. The anti-settling material screened by the invention is a good emulsion stabilizer and a suspending agent, has pseudoplastic flowing performance, is a coating viscosity modifier and a thickening agent, can suspend and disperse the powdery pigment, can ensure that the product obtains the best color, improves the upper limit of the load bearing of blue diluted by water, and has good anti-settling effect when the coating is diluted by water with the mass fraction of 25 percent at most.
Description
Technical Field
The invention relates to industrial coatings, in particular to a water-based epoxy primer with good anti-settling effect and a preparation method thereof.
Background
The water-based epoxy primer can be used as a primer or a middle coating matched with the water-based anticorrosive coating and can be used as an antirust primer or a middle coating on the surfaces of steel products, aluminum products, galvanized steel products and metal spraying layers on a water line.
Disclosure of Invention
The invention aims to provide a water-based epoxy primer with a good anti-settling effect and a preparation method thereof, so as to solve the problem of easy occurrence of sedimentation.
In order to achieve the purpose, the invention provides the following technical scheme:
the water-based epoxy primer with good anti-settling effect and the preparation method thereof comprise the following raw materials, by weight, 35-55 parts of water-based epoxy emulsion, 6-12 parts of white pigment, 0.5-3 parts of black pigment, 8-15 parts of antirust filler, 0.5-1.5 parts of cosolvent, 0.5-2.4 parts of wetting dispersant, 0.1-0.5 part of defoaming agent, 0.2-1 part of anti-settling auxiliary agent, 0.2-0.5 part of base material wetting agent and 1-1.5 parts of thickening agent.
On the basis of the technical scheme, the invention also provides the following optional technical scheme:
in one alternative: the water-based epoxy emulsion is one or a mixture of more of KWA-22, SN-8701, SN-8705 and 2060H which are composed of self-emulsifying epoxy resin and ionic epoxy resin; the cosolvent is one or more of ethanol, isopropanol, diethylene glycol ethyl ether, propylene glycol methyl ether, dipropylene glycol methyl ether, diethylene glycol butyl ether and dipropylene glycol butyl ether.
In one alternative: the black pigment is one or more of MA100, C311, M1000 and iron oxide black 722; the white pigment is one or a mixture of R818, R601, 996 and 940.
In one alternative: the wetting dispersant is one or more of Byk-163, Byk-9076, Byk-2012, Byk-191, Tego-710, Tego-670 and Tego-760W, Efka-PX-4310; the defoaming agent is one or a mixture of Byk-022, Byk-024, Tego-810 and Tego-902W, Tego-901W, A10.
In one alternative: the filler is one or more of precipitated barium sulfate, talcum powder, mica powder, aluminum tripolyphosphate, zinc phosphate, zinc oxide, calcium nitrite modified zinc phosphate and zinc modified aluminum polyphosphate; the anti-settling auxiliary agent is one or a mixture of more of fumed silica, polyamide wax, magnesium aluminum silicate and organic bentonite.
In one alternative: the substrate wetting agent is one or a mixture of more of Byk-346, Tego-245, Tego-270, Tego-280, 104E, Tego-4100 and Tego-4200; the flash rust prevention auxiliary agent is one or a mixture of more of AC18, Halox-150, Halox-Flashx-330, FA-179, MT-5017 and Raybo 60.
In one alternative: the thickener is one or more of PUR40, PUR65, Tego-3030, RM-8W, RM-2020, XS-71, WT-105A, TT-935 and ASE 60.
The preparation method of the water-based epoxy primer with good anti-settling effect comprises the following steps:
s1, preparing materials: weighing raw materials of each component according to the formula amount;
s2 mixing: adding water into a stirring kettle, gradually adding a wetting dispersant, a defoaming agent, a pigment, a filler and an anti-settling auxiliary agent while stirring at a first-level rotating speed, and then stirring at a third-level rotating speed for 30min to obtain uniform pigment and filler slurry;
s3 grinding: grinding the uniform pigment and filler slurry to the fineness of less than or equal to 25 um;
s4 paint mixing: adding epoxy emulsion into a stirring kettle, stirring at a second-stage rotating speed, adding the ground pigment filler slurry, adding a defoaming agent, a base material wetting agent, a part of cosolvent and a thickening agent according to the formula sequence, and adjusting the viscosity to be 110 ku; and filtering to obtain the product.
In one alternative: the first-level rotating speed in the step S2 and the step S4 is 600r/min for 300-.
Compared with the prior art, the invention has the following beneficial effects:
1. the water-based wetting dispersant screened by the invention has excellent electrostatic stability and strong anchoring groups for pigments and fillers, greatly reduces the viscosity and surface tension of a system, and improves the color development and storage stability of the coating;
2. the anti-settling material screened by the invention is a good emulsion stabilizer and a suspending agent, has pseudoplastic flowing performance, is a coating viscosity modifier and a thickening agent, can suspend and disperse the powdery pigment, can ensure that the product obtains the best color, improves the upper limit of the load bearing of blue diluted by water, and has good anti-settling effect when the coating is diluted by water with the mass fraction of 25 percent at most.
Detailed Description
The examples are given solely for the purpose of illustration and are not intended to limit the scope of the invention. Any obvious modifications or variations can be made to the present invention without departing from the spirit or scope of the present invention.
Example one
The water-based epoxy primer with good anti-settling effect and the preparation method thereof comprise the following raw materials, by weight, 35 parts of water-based epoxy emulsion, 6 parts of white pigment, 0.5 part of black pigment, 8 parts of antirust filler, 0.5 part of cosolvent, 0.5 part of wetting dispersant, 0.1 part of defoaming agent, 0.2 part of anti-settling auxiliary agent, 0.2 part of base material wetting agent and 1 part of thickening agent.
The water-based epoxy emulsion is one of KWA-22, SN-8701, SN-8705 and 2060H which are composed of self-emulsifying epoxy resin and ionic epoxy resin; the cosolvent is one of ethanol, isopropanol, diethylene glycol ethyl ether, propylene glycol methyl ether, dipropylene glycol methyl ether, diethylene glycol butyl ether and dipropylene glycol butyl ether.
The black pigment is one of MA100, C311, M1000 and iron oxide black 722; the white pigment is one of R818, R601, 996 and 940.
The wetting dispersant is one of Byk-163, Byk-9076, Byk-2012, Byk-191, Tego-710, Tego-670 and Tego-760W, Efka-PX-4310; the defoaming agent is one of Byk-022, Byk-024, Tego-810 and Tego-902W, Tego-901W, A10.
The filler is one or a mixture of more of precipitated barium sulfate, talcum powder, mica powder, aluminum tripolyphosphate, zinc phosphate, zinc oxide, calcium nitrite modified zinc phosphate and zinc modified aluminum polyphosphate; the anti-settling auxiliary agent is one of fumed silica, polyamide wax, magnesium aluminum silicate and organic bentonite.
The substrate wetting agent is one of Byk-346, Tego-245, Tego-270, Tego-280, 104E, Tego-4100 and Tego-4200; the flash rust prevention auxiliary agent is one of AC18, Halox-150, Halox-Flashx-330, FA-179, MT-5017 and Raybo 60.
The thickener is one of PUR40, PUR65, Tego-3030, RM-8W, RM-2020, XS-71, WT-105A, TT-935 and ASE 60.
The preparation method of the water-based epoxy primer with good anti-settling effect comprises the following steps:
s1, preparing materials: weighing raw materials of each component according to the formula amount;
s2 mixing: adding water into a stirring kettle, gradually adding a wetting dispersant, a defoaming agent, a pigment, a filler and an anti-settling auxiliary agent while stirring at a first-level rotating speed, and then stirring at a third-level rotating speed for 30min to obtain uniform pigment and filler slurry;
s3 grinding: grinding the uniform pigment and filler slurry to the fineness of less than or equal to 25 um;
s4 paint mixing: adding epoxy emulsion into a stirring kettle, stirring at a second-stage rotating speed, adding the ground pigment filler slurry, adding a defoaming agent, a base material wetting agent, a part of cosolvent and a thickening agent according to the formula sequence, and adjusting the viscosity to 100 ku; and filtering to obtain the product.
The primary rotating speed in the step S2 and the step S4 is 300r/min, the secondary rotating speed is 700r/min, and the tertiary rotating speed is more than 1700 r/min.
Example two
The water-based epoxy primer with good anti-settling effect and the preparation method thereof comprise the following raw materials, by weight, 45 parts of water-based epoxy emulsion, 9 parts of white pigment, 2 parts of black pigment, 11 parts of antirust filler, 1 part of cosolvent, 1.5 parts of wetting dispersant, 0.3 part of defoaming agent, 0.6 part of anti-settling auxiliary agent, 0.4 part of base material wetting agent and 1.2 parts of thickening agent.
The water-based epoxy emulsion is a mixture of KWA-22, SN-8701, SN-8705 and 2060H, which are composed of self-emulsifying epoxy resin and ionic epoxy resin; the cosolvent is a mixture of ethanol, isopropanol, diethylene glycol ethyl ether, propylene glycol methyl ether, dipropylene glycol methyl ether, diethylene glycol butyl ether and dipropylene glycol butyl ether.
The black pigment is a mixture of MA100, C311, M1000 and black iron oxide 722; the white pigment is a mixture of R818, R601, 996 and 940.
The wetting dispersant is a mixture of Byk-163, Byk-9076, Byk-2012, Byk-191, Tego-710, Tego-670 and Tego-760W, Efka-PX-4310; the defoaming agent is a mixture of Byk-022, Byk-024, Tego-810 and Tego-902W, Tego-901W, A10.
The filler is a mixture of precipitated barium sulfate, talcum powder, mica powder, aluminum tripolyphosphate, zinc phosphate, zinc oxide, calcium nitrite modified zinc phosphate and zinc modified aluminum polyphosphate; the anti-settling auxiliary agent is a mixture of fumed silica, polyamide wax, magnesium aluminum silicate and organic bentonite.
The substrate wetting agent is a mixture of Byk-346, Tego-245, Tego-270, Tego-280, 104E, Tego-4100 and Tego-4200; the flash rust prevention auxiliary agent is a mixture of AC18, Halox-150, Halox-Flashx-330, FA-179, MT-5017 and Raybo 60.
The thickener is a mixture of PUR40, PUR65, Tego-3030, RM-8W, RM-2020, XS-71, WT-105A, TT-935 and ASE 60.
The preparation method of the water-based epoxy primer with good anti-settling effect is characterized by comprising the following steps:
s1, preparing materials: weighing raw materials of each component according to the formula amount;
s2 mixing: adding water into a stirring kettle, gradually adding a wetting dispersant, a defoaming agent, a pigment, a filler and an anti-settling auxiliary agent while stirring at a first-level rotating speed, and then stirring at a third-level rotating speed for 30min to obtain uniform pigment and filler slurry;
s3 grinding: grinding the uniform pigment and filler slurry to the fineness of less than or equal to 25 um;
s4 paint mixing: adding epoxy emulsion into a stirring kettle, stirring at a second-stage rotating speed, adding the ground pigment filler slurry, adding a defoaming agent, a base material wetting agent, a part of cosolvent and a thickening agent according to the formula sequence, and adjusting the viscosity to 105 ku; and filtering to obtain the product.
The primary rotating speed in the step S2 and the step S4 is 450r/min, the secondary rotating speed is 1200r/min, and the tertiary rotating speed is more than 1700 r/min.
EXAMPLE III
The water-based epoxy primer with good anti-settling effect and the preparation method thereof comprise the following raw materials, by weight, 55 parts of a water-based epoxy emulsion, 12 parts of a white pigment, 3 parts of a black pigment, 15 parts of an anti-rust filler, 1.5 parts of a cosolvent, 2.4 parts of a wetting dispersant, 0.5 part of a defoaming agent, 1 part of an anti-settling auxiliary agent, 0.5 part of a base material wetting agent and 1.5 parts of a thickening agent.
The water-based epoxy emulsion is a mixture of KWA-22, SN-8701 and SN-8705 which are composed of self-emulsifying epoxy resin and ionic epoxy resin; the cosolvent is a mixture of ethanol, isopropanol, diethylene glycol ethyl ether, propylene glycol methyl ether, dipropylene glycol methyl ether and diethylene glycol butyl ether.
The black pigment is a mixture of MA100, C311 and M1000; the white pigment is a mixture of R818, R601 and 996.
The wetting dispersant is a mixture of Byk-163, Byk-9076, Byk-2012, Byk-191, Tego-710, Tego-670 and Tego-760W; the defoaming agent is a mixture of Byk-022, Byk-024, Tego-810 and Tego-902W, Tego-901W.
The filler is a mixture of precipitated barium sulfate, talcum powder, mica powder, aluminum tripolyphosphate, zinc phosphate, zinc oxide and calcium nitrite modified zinc phosphate; the anti-settling auxiliary agent is a mixture of fumed silica, polyamide wax and magnesium aluminum silicate.
The substrate wetting agent is a mixture of Byk-346, Tego-245, Tego-270, Tego-280 and 104E, Tego-4100; the flash rust prevention auxiliary agent is a mixture of AC18, Halox-150, Halox-Flashx-330, FA-179, MT-5017 and Raybo 60.
The thickener is a mixture of PUR40, PUR65, Tego-3030, RM-8W, RM-2020, XS-71, WT-105A, TT-935 and ASE 60.
The preparation method of the water-based epoxy primer with good anti-settling effect is characterized by comprising the following steps:
s1, preparing materials: weighing raw materials of each component according to the formula amount;
s2 mixing: adding water into a stirring kettle, gradually adding a wetting dispersant, a defoaming agent, a pigment, a filler and an anti-settling auxiliary agent while stirring at a first-level rotating speed, and then stirring at a third-level rotating speed for 30min to obtain uniform pigment and filler slurry;
s3 grinding: grinding the uniform pigment and filler slurry to the fineness of less than or equal to 25 um;
s4 paint mixing: adding epoxy emulsion into a stirring kettle, stirring at a second-stage rotating speed, adding the ground pigment filler slurry, adding a defoaming agent, a base material wetting agent, a part of cosolvent and a thickening agent according to the formula sequence, and adjusting the viscosity to 110 ku; and filtering to obtain the product.
The first-stage rotating speed in the step S2 and the step S4 is 600r/min, the second-stage rotating speed is 1600r/min, and the third-stage rotating speed is a rotating speed larger than 1700 r/min.
The properties of the coated product prepared in example 1 were examined as follows:
| detecting items | Performance index | Detection method |
| Viscosity of the solution | 100-110ku | GB/T |
| Fineness (blade fineness gauge method) | ≤25um | GB/T1724-1979 |
| Paint film appearance (visual method) | Is normal | |
| Glossiness (glossiness instrument) | 5°-30° | GB/T9754-2007 |
| Adhesion (lattice test) | Grade no more than 1 | GB/T9286-1998 |
| Hardness (Pencil hardness) | HB | GB/T6739-2006 |
| Water resistance | ≥240h | GB/T1733-1993 |
| Resistance to salt fog | ≥500h | GBT10125-1997 |
The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present disclosure, and all the changes or substitutions should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (9)
1. The water-based epoxy primer with good anti-settling effect is characterized by comprising the following raw materials, by weight, 35-55 parts of a water-based epoxy emulsion, 6-12 parts of a white pigment, 0.5-3 parts of a black pigment, 8-15 parts of an anti-rust filler, 0.5-1.5 parts of a cosolvent, 0.5-2.4 parts of a wetting dispersant, 0.1-0.5 part of an antifoaming agent, 0.2-1 part of an anti-settling auxiliary agent, 0.2-0.5 part of a base material wetting agent and 1-1.5 parts of a thickening agent.
2. The waterborne epoxy primer with good anti-settling effect as claimed in claim 1, wherein the waterborne epoxy emulsion is one or more of a mixture of KWA-22, SN-8701, SN-8705 and 2060H consisting of self-emulsifying epoxy resin and ionic epoxy resin; the cosolvent is one or more of ethanol, isopropanol, diethylene glycol ethyl ether, propylene glycol methyl ether, dipropylene glycol methyl ether, diethylene glycol butyl ether and dipropylene glycol butyl ether.
3. The waterborne epoxy primer with good anti-settling effect as claimed in claim 1, wherein the black pigment is one or more of MA100, C311, M1000, and iron oxide black 722; the white pigment is one or a mixture of R818, R601, 996 and 940.
4. The waterborne epoxy primer with good anti-settling effect as claimed in claim 1, wherein the wetting dispersant is one or more of Byk-163, Byk-9076, Byk-2012, Byk-191, Tego-710, Tego-670, Tego-760W, Efka-PX-4310; the defoaming agent is one or a mixture of Byk-022, Byk-024, Tego-810 and Tego-902W, Tego-901W, A10.
5. The waterborne epoxy primer with good anti-settling effect as claimed in claim 1, wherein the filler is one or a mixture of several of precipitated barium sulfate, talcum powder, mica powder, aluminum tripolyphosphate, zinc phosphate, zinc oxide, calcium nitrite modified zinc phosphate and zinc modified aluminum polyphosphate; the anti-settling auxiliary agent is one or a mixture of more of fumed silica, polyamide wax, magnesium aluminum silicate and organic bentonite.
6. The waterborne epoxy primer with good anti-settling effect as claimed in claim 1, wherein the substrate wetting agent is one or a mixture of Byk-346, Tego-245, Tego-270, Tego-280, 104E, Tego-4100 and Tego-4200; the flash rust prevention auxiliary agent is one or a mixture of more of AC18, Halox-150, Halox-Flashx-330, FA-179, MT-5017 and Raybo 60.
7. The waterborne epoxy primer with good anti-settling effect of claim 1, wherein the thickener is one or more of PUR40, PUR65, Tego-3030, RM-8W, RM-2020, XS-71, WT-105A, TT-935 and ASE 60.
8. A method for preparing the anti-settling water-based epoxy primer according to any one of claims 1 to 7, comprising the steps of:
s1, preparing materials: weighing raw materials of each component according to the formula amount;
s2 mixing: adding water into a stirring kettle, gradually adding a wetting dispersant, a defoaming agent, a pigment, a filler and an anti-settling auxiliary agent while stirring at a first-level rotating speed, and then stirring at a third-level rotating speed for 30min to obtain uniform pigment and filler slurry;
s3 grinding: grinding the uniform pigment and filler slurry to the fineness of less than or equal to 25 um;
s4 paint mixing: adding epoxy emulsion into a stirring kettle, stirring at a second-stage rotating speed, adding the ground pigment filler slurry, adding a defoaming agent, a base material wetting agent, a part of cosolvent and a thickening agent according to the formula sequence, and adjusting the viscosity to be 110 ku; and filtering to obtain the product.
9. The method as claimed in claim 8, wherein the first rotation speed in step S2 and step S4 is 300-600r/min, the second rotation speed is 700-1600r/min, and the third rotation speed is more than 1700 r/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110582119.4A CN113088161A (en) | 2021-05-27 | 2021-05-27 | Water-based epoxy primer with good anti-settling effect and preparation method thereof |
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| CN202110582119.4A CN113088161A (en) | 2021-05-27 | 2021-05-27 | Water-based epoxy primer with good anti-settling effect and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115895386A (en) * | 2022-11-11 | 2023-04-04 | 擎天材料科技有限公司 | Water-based bi-component epoxy silver powder paint and preparation method and application thereof |
| CN116875147A (en) * | 2023-07-12 | 2023-10-13 | 广东丰硕新材料有限公司 | High-gloss high-wear-resistance water-based epoxy floor paint |
-
2021
- 2021-05-27 CN CN202110582119.4A patent/CN113088161A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115895386A (en) * | 2022-11-11 | 2023-04-04 | 擎天材料科技有限公司 | Water-based bi-component epoxy silver powder paint and preparation method and application thereof |
| CN115895386B (en) * | 2022-11-11 | 2023-08-25 | 擎天材料科技有限公司 | Water-based bi-component epoxy silver paint and preparation method and application thereof |
| CN116875147A (en) * | 2023-07-12 | 2023-10-13 | 广东丰硕新材料有限公司 | High-gloss high-wear-resistance water-based epoxy floor paint |
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