CN111073451A - Waterborne epoxy antistatic floor bottom and intermediate coating and construction method thereof - Google Patents
Waterborne epoxy antistatic floor bottom and intermediate coating and construction method thereof Download PDFInfo
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- CN111073451A CN111073451A CN201911286084.9A CN201911286084A CN111073451A CN 111073451 A CN111073451 A CN 111073451A CN 201911286084 A CN201911286084 A CN 201911286084A CN 111073451 A CN111073451 A CN 111073451A
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- component
- fiber
- floor bottom
- ground
- antistatic floor
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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
- C09D5/002—Priming paints
-
- 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
- C09D5/24—Electrically-conducting paints
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/12—Flooring or floor layers made of masses in situ, e.g. seamless magnesite floors, terrazzo gypsum floors
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/04—Antistatic
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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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F2290/00—Specially adapted covering, lining or flooring elements not otherwise provided for
- E04F2290/04—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire
- E04F2290/048—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire against static electricity
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Floor Finish (AREA)
Abstract
A water-based epoxy antistatic floor bottom and intermediate coating and a construction method thereof are disclosed, which are composed of a component A and a component B, wherein the component A is composed of the following components in percentage by mass: 20-30% of a II-generation waterborne epoxy resin curing agent; 40-59% of water; 0.1-1% of a dispersant; the component B consists of bisphenol A epoxy resin and active diluent, and is characterized by also comprising conductive fibers, wherein the conductive fibers account for 2-5% of the volume of the component A and the component B, and the length of the fibers is 5-10 mm. The construction process comprises the steps of flushing concrete or mortar by using dilute nitric acid with the concentration of 2-5%; and adjusting the pH value. The coating can effectively improve the continuity and stability of the whole electric conduction, and the structural strength is further improved. By the construction method, the bonding strength between the coating and the ground can be effectively improved.
Description
Technical Field
The invention relates to a water-based epoxy antistatic floor bottom and middle coating and a preparation method thereof, belonging to the technical field of coatings.
Background
Epoxy resin is a common prime coat and intermediate coat material, has excellent comprehensive performance, excellent insulating property after curing, and resistivity of more than 1 x 1016 omega cm, and is easy to form static accumulation. The application and development of the antistatic terrace coating are firstly the development and application of the conductive coating and secondly the higher and higher antistatic requirements of modern production, life and commercial activities on the ground.
The solvent type epoxy terrace contains a large amount of organic solvents, has serious environmental pollution, low safety coefficient in the processes of production, transportation and use, has hidden troubles of combustion and explosion, has poor wet adhesion and is required to be used in a dry environment.
The water-based epoxy resin coating can be constructed on the surface of wet or newly poured concrete, has good adhesive force on the surface of the concrete, can seal water vapor of a concrete capillary, and is suitable for being used as a concrete seal primer. The solvent type or water-based epoxy floor coating can be constructed on the sealing primer.
In the prior art, Chinese patent (CN201310436226.1 a water-based epoxy antistatic floor bottom, middle coating and preparation method thereof) discloses that the coating is composed of a component A and a component B, wherein the component A is composed of a II-substituted water-based epoxy resin curing agent, water, conductive graphite and a dispersing agent, and the component B is composed of bisphenol A epoxy resin and a diluting agent; the preparation method comprises dispersing conductive graphite in aqueous solution of II-generation waterborne epoxy resin curing agent through dispersant, grinding to obtain component A, and adding corresponding component B to obtain the final product; the coating is environment-friendly, good in safety and antistatic property, simple and rapid in preparation method, low in cost and capable of being produced industrially. In order to enable the epoxy terrace to have the antistatic capability, 20-30% of conductive graphite is added into the coating. Through tests, after the conductive graphite is added, the dispersion is unstable, and the stable full-range conductive effect cannot be formed. If graphite powder is used, because graphite is in a sheet-shaped structure, the specific surface area is large under the condition of small particles, and small-range agglomeration is easily formed under the action of water molecules, so that the conductive effect can be ensured only by increasing the quantity of the graphite powder, but the structural strength of the graphite is much lower than that of other inorganic particles and hardened resin, and the structural strength of a resin layer is sacrificed due to the increase of the quantity of the graphite. The cost of graphite fibers is very high, and of course, the problem of agglomeration is also high, which is better than that of graphite powder, but the strength of graphite fibers is low, which also results in the reduction of structural strength.
In addition, the aqueous epoxy resin has low viscosity, and water can penetrate into pores on the surface of concrete or mortar, but waterAnd also seeps in, and water is difficult to discharge in the capillary pores. If the mortar or the concrete is poured for more than 1 year, the water basically has no hydration reaction with the mortar and the concrete and is only physically adsorbed, and if the water is only physically adsorbed, the water in the capillary holes possibly has a destructive effect on the ground after freeze-thaw cycles in northern areas. If the concrete or mortar is poured for less than 1 year, the concrete or mortar is possibly hydrated or dissolved with Ca (OH)2. Of course, the situation is very rare, and most construction ground is more than one year.
Disclosure of Invention
The invention aims to provide a water-based epoxy anti-static floor bottom and intermediate coating capable of improving structural strength and anti-static effect, and a coating construction method.
In order to realize the purpose, the waterborne epoxy antistatic terrace bottom capable of improving the structural strength and the antistatic effect comprises two components, namely a component A and a component B, wherein the component A comprises the following components in percentage by mass:
20-30% of a II-generation waterborne epoxy resin curing agent;
40-59% of water;
0.1-1% of a dispersant;
the component B consists of bisphenol A type epoxy resin and active diluent,
the conductive fiber is calculated by the volume ratio of the A component to the B component, the conductive fiber accounts for 2-5% of the volume of the A component and the B component, and the fiber length is 5-10 mm.
Preferably, the conductive fiber is a composite fiber, a composite organic fiber and a conductive material;
preferably, the organic fiber can be selected from a wide range, such as polypropylene fiber, polyethylene fiber, and cellulose fiber;
further, the composite fiber production process comprises the following steps:
1) mixing graphite powder and fibers according to a volume ratio of 1.5: 1-3:1 in a hydrophobic resin aqueous solution, wherein the volume ratio of the total volume of graphite and fibers to the volume of the hydrophobic resin solution is 1: 0.3-1: 1.5;
2) and (3) hydrophobic resin with the viscosity of 700-800mPa & s, spreading the dispersed solution on graphite powder, solidifying, crushing by a cone crusher, sieving by a sieve with the diameter of 2-3mm, and taking the oversize as conductive fiber.
Preferably, the conductive fiber can also be organic fiber composite metal powder, and air is introduced into the epoxy resin through epoxy resin bonding, wherein the volume proportion of the introduced air is 10-12%, and the particle diameter of the air bubbles is 0.2-0.8 mm.
A construction method comprises the following steps:
1) washing the concrete or mortar by using dilute nitric acid with the concentration of 2-5%;
2) after the ground is dried, 5ml of deionized water is poured on the ground with the depth of not more than 3cm2, and after the deionized water stays for 15s, the PH value of the water on the ground is detected by a PH test paper;
3) detecting in step 2, if the pH value is acidic, spraying Ca (OH)2 saturated solution, and adjusting the pH value to be in the range of 7.5-8; if alkaline or neutral, do not spray Ca (OH)2 saturated solution;
4) after PH detection or adjustment, after the ground is dried for 24 hours, the waterborne epoxy antistatic floor bottom and middle coating are poured on the ground, and after the waterborne epoxy antistatic floor bottom and middle coating are uniformly coated, the ground is waited to be dried.
The invention has the advantages that the continuity and the stability of the whole electric conduction can be effectively improved, and the structural strength is further improved. By the construction method, the bonding strength between the coating and the ground can be effectively improved.
Detailed Description
The invention is described in detail below.
A waterborne epoxy antistatic floor bottom and a middle coating are composed of a component A and a component B, wherein the component A is composed of the following components in percentage by mass:
20-30% of a II-generation waterborne epoxy resin curing agent;
40-59% of water;
0.1-1% of a dispersant;
the component B consists of bisphenol A type epoxy resin and active diluent,
the conductive fiber is calculated by the volume ratio of the A component to the B component, the conductive fiber accounts for 2-5% of the volume of the A component and the B component, and the fiber length is 5-10 mm.
The conductive fiber is composite fiber, composite organic fiber and conductive material, the selectable range of the organic fiber is more, polypropylene fiber, polyethylene fiber, cellulose fiber and the like, and the graphite powder and the fiber are mixed according to the volume ratio of 1.5: 1-3:1 in a hydrophobic resin aqueous solution, wherein the volume ratio of the total volume of graphite and fibers to the volume of the hydrophobic resin solution is 1: 0.3-1: 1.5;
the hydrophobic resin is epoxy resin, the viscosity is 700-800 mPa.s, the dispersed solution is flatly paved on graphite powder, after solidification, the graphite powder is crushed by a cone crusher and passes through a 2-3mm sieve, and the oversize product is taken as conductive fiber.
Of course, the conductive fiber can also be organic fiber composite metal powder, so that the density of the composite fiber is increased, the composite fiber is rapidly settled during laying, and the overall strength of the structure is not facilitated. Therefore, under the condition that the volume ratio of the graphite powder is not changed, air is introduced into the epoxy resin, the volume ratio of the introduced air is 10-12%, and the particle size of the bubbles is 0.2-0.8 mm. Thus, the conductive fibers contain closed air bubbles, have a reduced density, and can be substantially suspended in the aqueous epoxy resin layer. The whole continuity is better, and the structural strength is more excellent.
In order to improve the bonding strength of the waterborne epoxy resin during the construction of the underground coating with the conductive fiber, dilute nitric acid with the concentration of 2-5% is used for flushing concrete or mortar before laying, and 5ml of deionized water is used for pouring water with the depth of not more than 3cm after the ground is dried2Standing for 15s, detecting pH of water on the ground with pH paper, and spraying Ca (OH) if it is acidic2Saturated solution, adjusting pH to 7.5-8; if it is alkaline or neutral, Ca (OH) is not sprayed2A saturated solution; after the PH is detected or adjusted, the ground is dried for 24 hours, the coating is poured on the ground, and after the coating is uniformly smeared, the coating is waited to be dried. The ground is cleaned by dilute nitric acid, and part of calcium carbonate is dissolved, so that the surface of concrete or mortar is rougher, and the bonding strength is favorably improved.
The mass ratio of the bisphenol A type epoxy resin to the reactive diluent in the component B is 70-95: 5-30.
The reactive diluent comprises one or more of butyl glycidyl ether, octyl glycidyl ether, dodecyl-tetradecyl glycidyl ether, ethylene glycol diglycidyl ether, neopentyl glycol diglycidyl ether, trihydroxymethyl triglycidyl ether, 1, 4-butanediol diglycidyl ether, polyethylene glycol diglycidyl ether, polypropylene glycol diglycidyl ether, 1, 6-hexanediol diglycidyl ether and tert-carbonic acid glycidyl ester.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The water-based epoxy antistatic floor bottom and middle coating comprises two components, namely a component A and a component B, wherein the component A comprises the following components in percentage by mass:
20-30% of a II-generation waterborne epoxy resin curing agent;
40-59% of water;
0.1-1% of a dispersant;
the component B consists of bisphenol A type epoxy resin and active diluent and is characterized in that,
the conductive fiber is calculated by the volume ratio of the A component to the B component, the conductive fiber accounts for 2-5% of the volume of the A component and the B component, and the fiber length is 5-10 mm.
2. The waterborne epoxy antistatic floor bottom and middle coating as claimed in claim 1, wherein the conductive fiber is composite fiber, composite organic fiber and conductive material.
3. The waterborne epoxy antistatic floor bottom and middle coating as claimed in claim 2, wherein the range of the organic fiber is wide, and the organic fiber is selected from polypropylene fiber, polyethylene fiber and cellulose fiber.
4. The waterborne epoxy antistatic floor bottom and middle coating of claim 2, wherein the composite fiber production process comprises the following steps:
1) mixing graphite powder and fibers according to a volume ratio of 1.5: 1-3:1 in a hydrophobic resin aqueous solution, wherein the volume ratio of the total volume of graphite and fibers to the volume of the hydrophobic resin solution is 1: 0.3-1: 1.5;
2) and (3) hydrophobic resin with the viscosity of 700-800mPa & s, spreading the dispersed solution on graphite powder, solidifying, crushing by a cone crusher, sieving by a sieve with the diameter of 2-3mm, and taking the oversize as conductive fiber.
5. The waterborne epoxy antistatic floor bottom and middle coating as claimed in claim 2, wherein the conductive fiber can also be organic fiber composite metal powder, and the conductive fiber is bonded with the epoxy resin, and air is introduced into the epoxy resin, wherein the volume proportion of the introduced air is 10-12%, and the particle size of the air bubbles is 0.2-0.8 mm.
6. A construction method is characterized by comprising the following steps:
1) washing the concrete or mortar by using dilute nitric acid with the concentration of 2-5%;
2) after drying on the ground, 5ml of deionized water was poured in a volume of not more than 3cm2Standing on the ground for 15s, and then detecting the pH value of the water on the ground by using a pH test paper;
3) detecting in step 2, if the acid is formed, spraying Ca (OH)2Saturated solution, adjusting pH to 7.5-8; if it is alkaline or neutral, Ca (OH) is not sprayed2A saturated solution;
4) after PH detection or adjustment, after the ground is dried for 24 hours, the waterborne epoxy antistatic floor bottom and the middle coating of the claims 1 to 5 are poured on the ground, and after the waterborne epoxy antistatic floor bottom and the middle coating are uniformly coated, the ground is waited for drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911286084.9A CN111073451A (en) | 2019-12-13 | 2019-12-13 | Waterborne epoxy antistatic floor bottom and intermediate coating and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911286084.9A CN111073451A (en) | 2019-12-13 | 2019-12-13 | Waterborne epoxy antistatic floor bottom and intermediate coating and construction method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN111073451A true CN111073451A (en) | 2020-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911286084.9A Withdrawn CN111073451A (en) | 2019-12-13 | 2019-12-13 | Waterborne epoxy antistatic floor bottom and intermediate coating and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112898863A (en) * | 2020-11-18 | 2021-06-04 | 广州市维思涂料科技有限公司 | Anticorrosive paint and preparation method thereof |
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| CN104449246A (en) * | 2013-09-23 | 2015-03-25 | 中国石油化工股份有限公司 | Water-based epoxy antistatic floor primer and surface paint and preparation method thereof |
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| WO2018109321A1 (en) * | 2016-12-15 | 2018-06-21 | Compagnie Plastic Omnium | Automotive vehicle part made of plastic material provided with electrically conductive elements distributed over its surface |
| CN108384180A (en) * | 2018-03-10 | 2018-08-10 | 上海剑桥塑料有限公司 | A kind of antistatic polyoxymethylene resin |
| CN109320136A (en) * | 2018-09-11 | 2019-02-12 | 江苏艾德卡建材科技有限公司 | A kind of polyurethane terrazzo |
| CN109608982A (en) * | 2018-11-28 | 2019-04-12 | 河北晨阳工贸集团有限公司 | A kind of novel solvent-free epoxy antistatic floor |
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2019
- 2019-12-13 CN CN201911286084.9A patent/CN111073451A/en not_active Withdrawn
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| CN104449246A (en) * | 2013-09-23 | 2015-03-25 | 中国石油化工股份有限公司 | Water-based epoxy antistatic floor primer and surface paint and preparation method thereof |
| CN104927124A (en) * | 2015-05-29 | 2015-09-23 | 安徽同丰橡塑工业有限公司 | Antibacterial antistatic and wear-resistant rubber floor |
| WO2018109321A1 (en) * | 2016-12-15 | 2018-06-21 | Compagnie Plastic Omnium | Automotive vehicle part made of plastic material provided with electrically conductive elements distributed over its surface |
| CN108384180A (en) * | 2018-03-10 | 2018-08-10 | 上海剑桥塑料有限公司 | A kind of antistatic polyoxymethylene resin |
| CN109320136A (en) * | 2018-09-11 | 2019-02-12 | 江苏艾德卡建材科技有限公司 | A kind of polyurethane terrazzo |
| CN109608982A (en) * | 2018-11-28 | 2019-04-12 | 河北晨阳工贸集团有限公司 | A kind of novel solvent-free epoxy antistatic floor |
Non-Patent Citations (1)
| Title |
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| 西鹏等: "《高技术纤维》", 30 September 2004, 化学工业出版社 * |
Cited By (1)
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| CN112898863A (en) * | 2020-11-18 | 2021-06-04 | 广州市维思涂料科技有限公司 | Anticorrosive paint and preparation method thereof |
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Application publication date: 20200428 |