CN111154371A - Anti-cracking exterior wall coating and preparation method thereof - Google Patents
Anti-cracking exterior wall coating and preparation method thereof Download PDFInfo
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- CN111154371A CN111154371A CN202010049116.XA CN202010049116A CN111154371A CN 111154371 A CN111154371 A CN 111154371A CN 202010049116 A CN202010049116 A CN 202010049116A CN 111154371 A CN111154371 A CN 111154371A
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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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09D133/10—Homopolymers or copolymers of methacrylic acid esters
- C09D133/12—Homopolymers or copolymers of methyl methacrylate
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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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09D133/08—Homopolymers or copolymers of acrylic acid esters
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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
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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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
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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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
- C09D7/65—Additives macromolecular
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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
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0806—Silver
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- 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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to an anti-cracking exterior wall coating and a preparation method thereof, wherein the anti-cracking exterior wall coating comprises the following components in parts by weight: 15-22 parts of water dispersible resin, 2-3 parts of pigment dispersant, 0.5-0.8 part of surfactant, 5-7 parts of ethylene glycol, 0.2-0.4 part of defoaming agent, 10-15 parts of deionized water, 1-2 parts of hydroxyethyl cellulose aqueous solution, 1-3 parts of silver powder slurry, 3-5 parts of chloroprene rubber, 2-5 parts of binder, 1-2 parts of curing agent and 1-2 parts of fly ash.
Description
Technical Field
The invention relates to a coating, in particular to an anti-cracking outer wall coating and a preparation method thereof.
Background
In order to protect the main structure of a building, prolong the service life of the building, perfect the use function of the building and beautify the building, the outer wall of the building is usually decorated by using outer wall coatings, ceramic decorative materials, building decorative stones and powder scraps, wherein the outer wall coatings have better protection effect on the wall body and have outstanding advantages in the aspects of carbonization prevention, attractiveness, environmental protection and the like; however, at present, with the application of exterior wall coatings becoming more and more extensive, cracks on exterior walls of buildings become a long-term quality hotspot problem and are one of common building quality problems, and the appearance of cracks on exterior wall coatings not only affects the beauty of buildings, but also affects the interior of buildings, and even shortens the service life of the buildings.
Disclosure of Invention
The invention aims to solve the problems and provides an anti-cracking exterior wall coating and a preparation method thereof.
The purpose of the invention is realized by the following technical scheme:
an anti-cracking outer wall coating comprises the following components in parts by weight: 15-22 parts of water dispersible resin, 2-3 parts of pigment dispersant, 0.5-0.8 part of surfactant, 5-7 parts of ethylene glycol, 0.2-0.4 part of defoaming agent, 10-15 parts of deionized water, 1-2 parts of hydroxyethyl cellulose aqueous solution, 1-3 parts of silver powder slurry, 3-5 parts of chloroprene rubber, 2-5 parts of binder, 1-2 parts of curing agent and 1-2 parts of fly ash.
Preferably, the composition comprises the following components in parts by weight: 17 parts of water dispersible resin, 2.3 parts of pigment dispersant, 0.6 part of surfactant, 5.5 parts of ethylene glycol, 0.23 part of defoaming agent, 13 parts of deionized water, 1.5 parts of hydroxyethyl cellulose aqueous solution, 2 parts of silver paste, 4 parts of chloroprene rubber, 3 parts of binder, 1.5 parts of curing agent and 1.5 parts of fly ash.
Preferably, the water dispersible resin is composed of deionized water, paraffin wax having a melting point of 70 ℃, sodium dodecylbenzenesulfonate, polyoxyethylene nonylphenyl ether, ammonium persulfate, 2-ethylhexyl acrylate, methyl methacrylate, acrylic acid, and aqueous ammonia.
Preferably, the water dispersible resin is prepared by the following method: sequentially and respectively adding deionized water, paraffin wax with the melting point of 70 ℃, sodium dodecyl benzene sulfonate, polyoxyethylene nonyl phenyl ether and ammonium persulfate into a reactor, heating to 76 ℃, keeping the temperature, titrating by using a mixture of 2-ethyl hexyl acrylate, methyl methacrylate and acrylic acid while stirring, and keeping the temperature for 30 minutes after the titration is finished to obtain a copolymer; cooling the copolymer, adding ammonia water to adjust the pH value to 7.0-8.0, and forming the water dispersible resin.
Preferably, the pigment dispersant is ethyl acetate or acetone.
Preferably, the surfactant is sodium lauryl sulfate or polyoxyethylene.
Preferably, the antifoaming agent is ethanol.
Preferably, the binder is a modified phenolic resin and is prepared by the following method: putting molten phenol into a reactor at a low temperature, adding a formaldehyde aqueous solution and a modifier, adjusting the pH value to be 1.8-2 by hydrochloric acid, heating and stirring, carrying out reflux reaction, adding a coupling agent after the reaction is finished, uniformly stirring, and then discharging, wherein the reflux reaction time is 40-60min, and the reaction temperature is 80-100 ℃; the modifier is cardanol.
Preferably, the curing agent is polyethylene fiber with the diameter of 30-45 μm and the length of 8-12 mm.
A preparation method of an anti-cracking outer wall coating comprises the following steps:
(1) preparing materials according to a formula, mixing water dispersible resin, a pigment dispersant, deionized water, a hydroxyethyl cellulose aqueous solution and chloroprene rubber, and stirring and mixing uniformly;
(2) and adding the surfactant, the ethylene glycol, the defoaming agent, the silver powder slurry, the binder, the curing agent and the fly ash, and continuously stirring and uniformly mixing to obtain the product.
The formula mechanism of the invention is that the phenolic resin is prepared by modification, the melted phenol is put into a reactor at low temperature, then formaldehyde aqueous solution and modifier cardanol are added, the cardanol is obtained by processing biomass resource cashew nut shells, the cardanol has 15 carbon long alkyl chains, the toughness, chemical resistance, tensile strength and bending strength of the phenolic resin can be improved, the modified phenolic resin is fully mixed with water dispersible resin and hydroxyethyl cellulose aqueous solution, the function of a binder is effectively exerted, and the cracking of the coating is favorably prevented;
in addition, the fly ash has a certain retarding effect, and the strength of the coating can be well improved. The addition of the curing agent polyethylene fiber is beneficial to repairing the microcracks, and the polyethylene fiber plays a toughening role and is beneficial to preventing the microcracks from further cracking.
Detailed Description
The present invention is described in detail below with reference to specific examples, but the present invention is not limited thereto in any way.
Example 1
An anti-cracking outer wall coating is prepared by the following method,
(1) preparing materials according to a formula, mixing water dispersible resin, a pigment dispersant, deionized water, a hydroxyethyl cellulose aqueous solution and chloroprene rubber, and stirring and mixing uniformly;
(2) and adding the surfactant, the ethylene glycol, the defoaming agent, the silver powder slurry, the binder, the curing agent and the fly ash, and continuously stirring and uniformly mixing to obtain the product.
The concrete formula comprises 15 parts of water dispersible resin, 2 parts of pigment dispersant, 0.5 part of surfactant, 5 parts of ethylene glycol, 0.2 part of ethanol, 10 parts of deionized water, 1 part of hydroxyethyl cellulose aqueous solution, 1 part of silver paste, 3 parts of chloroprene rubber, 2 parts of modified phenolic resin, 1 part of polyethylene fiber and 1 part of fly ash.
The water dispersible resin is prepared from deionized water, paraffin wax with the melting point of 70 ℃, sodium dodecyl benzene sulfonate, polyoxyethylene nonyl phenyl ether, ammonium persulfate, 2-ethyl hexyl acrylate, methyl methacrylate, acrylic acid and ammonia water by the following method: sequentially and respectively adding deionized water, paraffin wax with the melting point of 70 ℃, sodium dodecyl benzene sulfonate, polyoxyethylene nonyl phenyl ether and ammonium persulfate into a reactor, heating to 76 ℃, keeping the temperature, titrating by using a mixture of 2-ethyl hexyl acrylate, methyl methacrylate and acrylic acid while stirring, and keeping the temperature for 30 minutes after the titration is finished to obtain a copolymer; cooling the copolymer, adding ammonia water to adjust the pH value to 7.0-8.0, and forming the water dispersible resin.
The modified phenolic resin is prepared by the following method: putting molten phenol into a reactor at a low temperature, adding a formaldehyde aqueous solution and a modifier, adjusting the pH value to be 1.8-2 by hydrochloric acid, heating and stirring, carrying out reflux reaction, adding a coupling agent after the reaction is finished, uniformly stirring, and then discharging, wherein the reflux reaction time is 50min, and the reaction temperature is 90 ℃; the modifier is cardanol.
The pigment dispersant is ethyl acetate; the surfactant is sodium dodecyl sulfate, and the polyethylene fiber has diameter of 30-45 μm and length of 9 mm.
Example 2
An anti-cracking exterior wall coating comprises 22 parts of water dispersible resin, 3 parts of pigment dispersant, 0.8 part of surfactant, 7 parts of ethylene glycol, 0.4 part of ethanol, 15 parts of deionized water, 2 parts of hydroxyethyl cellulose aqueous solution, 3 parts of silver paste, 5 parts of chloroprene rubber, 5 parts of modified phenolic resin, 2 parts of polyethylene fiber and 2 parts of fly ash.
The pigment dispersant is acetone; the surfactant is polyoxyethylene; the polyethylene fibers had a diameter of 30 to 45 μm and a length of 11mm, as in example 1.
Example 3
An anti-cracking exterior wall coating comprises, by weight, 17 parts of water dispersible resin, 2.3 parts of pigment dispersant, 0.6 part of surfactant, 5.5 parts of ethylene glycol, 0.23 part of ethanol, 13 parts of deionized water, 1.5 parts of hydroxyethyl cellulose aqueous solution, 2 parts of silver paste, 4 parts of chloroprene rubber, 3 parts of modified phenolic resin, 1.5 parts of polyethylene fiber and 1.5 parts of fly ash.
The pigment dispersant is ethyl acetate; the surfactant is sodium dodecyl sulfate; the polyethylene fibers had a diameter of 30 to 45 μm and a length of 9mm, as in example 1.
Example 4
An anti-cracking exterior wall coating comprises, by weight, 20 parts of water dispersible resin, 2.5 parts of pigment dispersant, 0.7 part of surfactant, 6 parts of ethylene glycol, 0.3 part of ethanol, 14 parts of deionized water, 1.5 parts of hydroxyethyl cellulose aqueous solution, 2 parts of silver paste, 4 parts of chloroprene rubber, 3 parts of modified phenolic resin, 1.5 parts of polyethylene fiber and 1.5 parts of fly ash.
The pigment dispersant is acetone; the surfactant is polyoxyethylene; the polyethylene fibers had a diameter of 30 to 45 μm and a length of 11mm, as in example 1.
The products of examples 1-4 were tested, and the specific results are shown in table 1:
TABLE 1 test results of products
| Item | Example 1 | Example 2 | Example 3 | Example 4 |
| Workability of cement surface | Brush coating two times without obstacle | Brush coating two times without obstacle | Brush coating two times without obstacle | Brush coating two times without obstacle |
| Anti-aging agent | Good wine | Good wine | Superior food | Good wine |
| Adhesion force | Level 1 | Level 1 | Level 1 | Level 1 |
| Washing resistance (times) | ≥900 | ≥910 | ≥1500 | ≥1000 |
| Aging resistance time | 1100 hours | 1150 hours | 1300 hours | 1200 hours |
| Cracking resistance in artificial environment | ≥800h | ≥850h | ≥1200h | ≥950h |
As can be seen from Table 1, the invention has good washing and brushing resistance, long cracking resistance time in artificial environment and excellent crack resistance.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (10)
1. The anti-cracking outer wall coating is characterized by comprising the following components in parts by weight: 15-22 parts of water dispersible resin, 2-3 parts of pigment dispersant, 0.5-0.8 part of surfactant, 5-7 parts of ethylene glycol, 0.2-0.4 part of defoaming agent, 10-15 parts of deionized water, 1-2 parts of hydroxyethyl cellulose aqueous solution, 1-3 parts of silver powder slurry, 3-5 parts of chloroprene rubber, 2-5 parts of binder, 1-2 parts of curing agent and 1-2 parts of fly ash.
2. An anti-cracking exterior wall coating as claimed in claim 1, which comprises the following components in parts by weight: 17 parts of water dispersible resin, 2.3 parts of pigment dispersant, 0.6 part of surfactant, 5.5 parts of ethylene glycol, 0.23 part of defoaming agent, 13 parts of deionized water, 1.5 parts of hydroxyethyl cellulose aqueous solution, 2 parts of silver paste, 4 parts of chloroprene rubber, 3 parts of binder, 1.5 parts of curing agent and 1.5 parts of fly ash.
3. An anti-cracking exterior wall paint as claimed in claim 1 or 2, wherein the water dispersible resin is composed of deionized water, paraffin wax with a melting point of 70 ℃, sodium dodecylbenzene sulfonate, polyoxyethylene nonylphenyl ether, ammonium persulfate, 2-ethylhexyl acrylate, methyl methacrylate, acrylic acid and ammonia water.
4. An anti-cracking exterior wall coating according to claim 3, wherein the water-dispersed resin is prepared by the following method: sequentially and respectively adding deionized water, paraffin wax with the melting point of 70 ℃, sodium dodecyl benzene sulfonate, polyoxyethylene nonyl phenyl ether and ammonium persulfate into a reactor, heating to 76 ℃, keeping the temperature, titrating by using a mixture of 2-ethyl hexyl acrylate, methyl methacrylate and acrylic acid while stirring, and keeping the temperature for 30 minutes after the titration is finished to obtain a copolymer; cooling the copolymer, adding ammonia water to adjust the pH value to 7.0-8.0, and forming the water dispersible resin.
5. An anti-cracking exterior wall coating as claimed in claim 1 or 2, wherein the pigment dispersant is ethyl acetate or acetone.
6. An anti-cracking exterior wall coating as claimed in claim 1 or 2, wherein the surfactant is sodium lauryl sulfate or polyoxyethylene.
7. An anti-cracking exterior wall coating as claimed in claim 1 or 2, wherein the antifoaming agent is ethanol.
8. An anti-cracking exterior wall coating as claimed in claim 1 or 2, wherein the binder is a modified phenolic resin, and is prepared by the following method: putting the melted phenol into a reactor at a low temperature, then adding a formaldehyde aqueous solution and a modifier, adjusting the pH value to be 1.8-2 by hydrochloric acid, heating and stirring, carrying out reflux reaction, adding a coupling agent after the reaction is finished, uniformly stirring, and then discharging; reflux reaction time is 40-60min, and reaction temperature is 80-100 ℃; the modifier is cardanol.
9. An anti-cracking exterior wall coating as claimed in claim 1 or 2, wherein the curing agent is polyethylene fiber with a diameter of 30-45 μm and a length of 8-12 mm.
10. The preparation method of an anti-cracking exterior wall coating as claimed in claim 1 or 2, which comprises the following steps:
(1) preparing materials according to a formula, mixing water dispersible resin, a pigment dispersant, deionized water, a hydroxyethyl cellulose aqueous solution and chloroprene rubber, and stirring and mixing uniformly;
(2) and adding the surfactant, the ethylene glycol, the defoaming agent, the silver powder slurry, the binder, the curing agent and the fly ash, and continuously stirring and uniformly mixing to obtain the product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010049116.XA CN111154371A (en) | 2020-01-16 | 2020-01-16 | Anti-cracking exterior wall coating and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010049116.XA CN111154371A (en) | 2020-01-16 | 2020-01-16 | Anti-cracking exterior wall coating and preparation method thereof |
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| Publication Number | Publication Date |
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| CN111154371A true CN111154371A (en) | 2020-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010049116.XA Pending CN111154371A (en) | 2020-01-16 | 2020-01-16 | Anti-cracking exterior wall coating and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111560194A (en) * | 2020-06-12 | 2020-08-21 | 安徽开林新材料股份有限公司 | Preparation process of building exterior wall heat-insulating coating |
| CN111876117A (en) * | 2020-07-03 | 2020-11-03 | 福建沃斯盾建材有限公司 | Anti-cracking epoxy AB adhesive and preparation method and application thereof |
-
2020
- 2020-01-16 CN CN202010049116.XA patent/CN111154371A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111560194A (en) * | 2020-06-12 | 2020-08-21 | 安徽开林新材料股份有限公司 | Preparation process of building exterior wall heat-insulating coating |
| CN111876117A (en) * | 2020-07-03 | 2020-11-03 | 福建沃斯盾建材有限公司 | Anti-cracking epoxy AB adhesive and preparation method and application thereof |
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Application publication date: 20200515 |