CN112662281B - Breathable epoxy floor coating - Google Patents
Breathable epoxy floor coating Download PDFInfo
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- CN112662281B CN112662281B CN202011586304.2A CN202011586304A CN112662281B CN 112662281 B CN112662281 B CN 112662281B CN 202011586304 A CN202011586304 A CN 202011586304A CN 112662281 B CN112662281 B CN 112662281B
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Abstract
The invention provides a breathable epoxy floor coating which comprises the following raw materials in percentage by mass: the component A comprises: 10 to 25 percent of water; 30-35% of water-based epoxy curing agent; 1-2% of a wetting agent; 0.3 to 1 percent of flatting agent; 0.2 to 0.5 percent of defoaming agent; filling: 20% -50%; pigment: 0% -20%; and B component: 76-94% of waterborne epoxy resin emulsion; 6-24% of water; the weight ratio of the component A to the component B is 1: 1-1.5. The breathable epoxy floor coating provided by the invention is prepared from water-based epoxy resin and a curing agent, does not contain formaldehyde, and is low in VOC concentration after curing. The epoxy terrace after solidification has certain air permeability through the grain size combination of filler, can prevent phenomenons such as the tympanic bulla that produces because of water atmospheric pressure, fracture, can also increase intensity, has superior anti-skidding wear-resisting and impact resistance. And the epoxy floor coating has the advantages of simple construction process, low cost and good application prospect.
Description
Technical Field
The invention belongs to the field of building materials, and relates to a breathable epoxy floor coating.
Background
At present, most of large underground garages, factory buildings, markets, hospitals, actual insurance rooms and the like in China adopt various industrial floor paint systems to meet the requirements of dust prevention, corrosion resistance, pressure resistance and scrubbing resistance. The epoxy paint film has the advantages of good physical and mechanical properties, excellent chemical resistance, smoothness and strong decoration, can meet the requirements of various modern industrial and civil terraces, and is widely applied.
The existing epoxy floor coating is completely cured because the resin and the curing agent are in a solution in a molecular form and the system is a homogeneous system, a paint film is very compact and has extremely poor air permeability, when the epoxy floor coating is applied to a base surface with heavy underground moisture, the paint film is jacked up because the rising of the underground moisture generates osmotic pressure on the paint film, and when the osmotic pressure is greater than the adhesive force between the paint film and the base surface, the paint film is shown as bubbling, so that the normal use is seriously influenced.
In the prior art, the method of arranging a plurality of conical holes of the finish paint layer on the breathable finish paint layer can effectively prevent the bubbling problem of the finish paint layer with heavy underground moisture, but the construction process is complex and the cost is high.
Disclosure of Invention
Aiming at the problem of bubbling of a floor paint surface caused by the existing ventilation problem, the invention provides the ventilation epoxy floor paint which is good in ventilation property and simple in construction.
In order to achieve the purpose, the invention adopts the following technical scheme.
The breathable epoxy floor coating comprises the following raw materials in percentage by mass:
the component A comprises:
10% -30% of water;
25% -35% of water-based epoxy curing agent;
0.5-2% of wetting agent;
0.3 to 1 percent of flatting agent;
0.2 to 0.5 percent of defoaming agent;
filling: 20% -50%;
pigment: 0% -20%;
and B component:
76-94% of waterborne epoxy resin emulsion;
6-24% of water;
the weight ratio of the component A to the component B is 1: 1-1.5.
The waterborne epoxy curing agent is polyamine-epoxy polymer.
The active component of the waterborne epoxy resin emulsion is bisphenol A type epoxy resin or bisphenol F type epoxy resin.
The filler is selected from one of barite powder, talcum powder, quartz sand, heavy barium carbonate and heavy calcium carbonate.
The fineness of the filler is 500-1500 meshes. Preferably, the component A is divided into components A1, A2 and A3 according to the fineness of the filler, wherein the fineness of the filler is respectively 800 meshes 500-800 meshes, 1000 meshes 800-1000 meshes and 1500 meshes 1000-1500 meshes.
The breathable epoxy floor coating can be prepared by adopting a method commonly used in the field. The preparation method of the compound comprises the following steps:
(1) mixing part of water, a waterborne epoxy curing agent, a wetting agent, a defoaming agent and a pigment at a high speed, then grinding, adding a filler and the balance of water, mixing at a low speed, and packaging to obtain a component A finished product;
(2) mixing the water-based epoxy resin emulsion with water at a low speed, and packaging to obtain a component B finished product;
(3) and packaging the component A and the component B according to the weight ratio to form the breathable epoxy floor coating.
In the step (1), the rotation speed of high-speed mixing is 1000-1800rpm, and the mixing time is 8-10 min; the rotation speed of the low-speed mixing is 600-900rpm, and the mixing time is 3-10 min.
In the step (1), the fineness of grinding is 20 μm.
In the step (2), the rotation speed of the low-speed mixing is 200-400rpm, and the mixing time is 5-15 min.
The invention also provides a construction method of the breathable epoxy floor coating, which comprises the following steps:
(1) treating the base layer to enable the base layer to adapt to the coating of the breathable epoxy floor coating;
(2) a, B components are mixed according to a proportion, firstly the coating of the filler with larger grain diameter is coated, and then the coating of the filler with smaller grain diameter is coated after the coating is dried completely.
The conditions of the base layer after treatment are as follows: the compressive strength is more than 25Mpa, and the tensile strength is more than 2 Mpa; the water content is less than 10 percent; the surface has a fine roughness corresponding to 10 μm; no oil pollution and no dust; no empty drum phenomenon.
The invention has the following advantages:
the breathable epoxy floor coating provided by the invention is prepared from water-based epoxy resin and a curing agent, does not contain formaldehyde, and is low in VOC concentration after curing. The epoxy terrace after solidification has certain air permeability through the grain size combination of filler, can prevent phenomenons such as the tympanic bulla that produces because of water atmospheric pressure, fracture, can also increase intensity, has superior anti-skidding wear-resisting and impact resistance. And the epoxy floor coating has the advantages of simple construction process, low cost and good application prospect.
Detailed Description
The present invention will be further illustrated with reference to the following examples, but the present invention is not limited to the following examples.
Example 1 preparation and construction method of breathable epoxy floor coating
The breathable epoxy floor coating comprises the following raw materials in percentage by mass:
the component A comprises:
and B component:
the coatings were prepared as follows:
(1) dispersing part of water, a waterborne epoxy curing agent, a wetting agent, a defoaming agent and a pigment at a high speed of 1500rpm for 8min, then grinding the mixture in a ball mill to a fineness of 20 microns, adding a filler and the balance of water at a low speed of 600rpm for dispersing for 10min, and packaging to obtain a finished product of A1-A3;
(2) mixing the liquid epoxy resin emulsion and water at low speed of 400rpm for 10min, and packaging to obtain a component B finished product;
(3) the components A1-A3 and the component B are respectively packaged into the breathable epoxy floor coating according to the weight ratio of 1: 1.5.
The breathable epoxy floor coating is applied to a factory workshop according to the following construction method:
(1) removing floating slurry, oil stain, dust and accumulated water on the surface of the concrete to ensure that the water content is about 6 percent; grinding and cleaning concrete to enable the surface to be flat and free of hollowing;
(2) performing primary coating, intermediate coating and batch coating on the surface of the concrete, polishing and absorbing dust to ensure that the base layer obtains fine roughness equivalent to 10 mu m and the water content is less than 10 percent;
(3) performing surface coating after finishing equipment installation: mixing and stirring the component A1 and the component B uniformly according to the mass ratio of 1:1.5, brushing in a batch scraping manner, and drying and curing; mixing and stirring the component A2 and the component B uniformly according to the mass ratio of 1:1.5, brushing in a roll coating manner, and drying and curing; mixing and stirring the component A3 and the component B uniformly according to the mass ratio of 1:1.5, and spraying the mixture by adopting high pressure airless spraying at the pressure of 20 MPa; and defoaming by using a defoaming roller before drying after the last spraying is finished, drying and curing after the self-leveling, and finishing construction, wherein the thickness of the final finish paint is 0.7mm, and the thickness of the terrace is 3 mm.
Example 2 preparation and construction method of breathable epoxy floor coating
The breathable epoxy floor coating comprises the following raw materials in percentage by mass:
the component A comprises:
and B component:
the coatings were prepared as follows:
(1) dispersing part of water, a waterborne epoxy curing agent, a wetting agent, a defoaming agent and a pigment at a high speed of 1800rpm for 8min, then grinding the mixture in a ball mill to a fineness of 20 microns, adding a filler and the balance of water at a low speed of 800rpm for 5min, and packaging to obtain a finished product of A1-A3;
(2) mixing the liquid epoxy resin emulsion and water at low speed of 200rpm for 15min, and packaging to obtain a component B finished product;
(3) the components A1-A3 and the component B are respectively packaged into the breathable epoxy floor coating according to the weight ratio of 1:1.
The breathable epoxy floor coating is applied to an underground parking lot according to the following construction method:
(1) removing floating slurry, oil stain, dust and accumulated water on the surface of the concrete to ensure that the water content is about 6 percent; grinding and cleaning concrete to enable the surface to be flat and free of hollowing;
(2) performing primary coating, intermediate coating and batch coating on the surface of the concrete, polishing and absorbing dust to ensure that the base layer obtains fine roughness equivalent to 10 mu m and the water content is less than 10 percent;
(3) mixing and stirring the component A1 and the component B uniformly according to the mass ratio of 1:1, brushing in a batch scraping manner, and drying and curing; mixing and stirring the component A2 and the component B uniformly according to the mass ratio of 1:1, brushing in a roll coating manner, and drying and curing; mixing and stirring the component A3 and the component B uniformly according to the mass ratio of 1:1, and spraying the mixture by adopting high pressure airless spraying at the pressure of 20 MPa; and defoaming by using a defoaming roller before drying after the last spraying is finished, drying and curing after the self-leveling, and finishing construction, wherein the thickness of the finish paint is 0.7mm, and the thickness of the terrace is 2 mm.
Example 3 preparation and construction method of breathable epoxy floor coating
The breathable epoxy floor coating comprises the following raw materials in percentage by mass:
the component A comprises:
and B component:
the coatings were prepared as follows:
(1) dispersing part of water, a waterborne epoxy curing agent, a wetting agent, a defoaming agent and a pigment at a high speed of 1500rpm for 10min, then grinding the mixture in a ball mill to a fineness of 20 microns, adding a filler and the balance of water at a low speed of 900rpm for 3min, and packaging to obtain a finished product of A1-A3;
(2) mixing the liquid epoxy resin emulsion and water at low speed of 200rpm for 15min, and packaging to obtain a component B finished product;
(3) the components A1-A3 and the component B are respectively packaged into the breathable epoxy floor coating according to the weight ratio of 1: 1-1.2.
The breathable epoxy floor coating is applied to underground commercial products according to the following construction method:
(1) maintaining for more than 28 days to remove floating slurry, oil stain, dust and accumulated water on the surface of the concrete, so that the water content is about 6 percent; grinding and cleaning concrete to enable the surface to be flat and free of hollowing;
(2) performing primary coating, intermediate coating and batch coating on the surface of the concrete, polishing and absorbing dust to ensure that the base layer obtains fine roughness equivalent to 10 mu m and the water content is less than 10 percent;
(3) mixing and stirring the component A1 and the component B uniformly according to the mass ratio of 1:1.2, brushing in a batch scraping manner, and drying and curing; mixing and stirring the component A2 and the component B uniformly according to the mass ratio of 1:1.2, brushing in a roll coating manner, and drying and curing; mixing and stirring the component A3 and the component B uniformly according to the mass ratio of 1:1.2, and spraying the mixture by adopting high pressure airless spraying at the pressure of 20 MPa; and defoaming by using a defoaming roller before drying after the last spraying is finished, drying and curing after the self-leveling, and finishing construction, wherein the thickness of the finish paint is 0.7mm, and the thickness of the terrace is 2 mm.
Example 4 Properties of breathable epoxy floor coatings
The epoxy floor coating prepared in the examples 1-3 is coated in layers to prepare a sample, and the test is carried out according to the standard GB/T22374-; the A3 fraction and B fraction prepared in example 1 were used as controls and the results are shown in the following table:
TABLE 1 Properties of different breathable epoxy floor coatings
As can be seen from the data in Table 1, the samples using the fillers of various particle sizes of the present invention meet the national standard in terms of each index, and the water resistance is superior to that of the samples using the fillers of single particle size.
Claims (4)
1. A construction method of the breathable epoxy floor coating is characterized by comprising the following steps:
(1) treating the base layer to enable the base layer to adapt to the coating of the breathable epoxy floor coating;
(2) a, B components are mixed according to a proportion, firstly, the coating of the filler with larger grain diameter is coated, and then the coating of the filler with smaller grain diameter is coated after the coating is dried completely;
the breathable epoxy floor coating comprises the following raw materials in percentage by mass:
the component A comprises: 10 to 25 percent of water; 30-35% of water-based epoxy curing agent; 1-2% of a wetting agent; 0.3 to 1 percent of flatting agent; 0.2 to 0.5 percent of defoaming agent; filling: 20% -50%; pigment: 0% -20%;
and B component: 76-94% of waterborne epoxy resin emulsion; 6-24% of water;
the weight ratio of the component A to the component B is 1: 1-1.5;
according to different filler fineness, the component A is divided into components A1, A2 and A3, wherein the filler fineness is respectively 800 meshes at 500-.
2. The method of claim 1, wherein the aqueous epoxy curing agent is a polyamine-epoxy polymer;
the active component of the waterborne epoxy resin emulsion is bisphenol A type epoxy resin or bisphenol F type epoxy resin.
3. The construction method according to claim 1, wherein the filler is selected from one of barite powder, talcum powder, quartz sand and ground calcium carbonate.
4. The construction method according to claim 1, wherein the conditions of the treated base layer are: the compressive strength is more than 25Mpa, and the tensile strength is more than 2 Mpa; the water content is less than 10 percent; the surface has a fine roughness corresponding to 10 μm; no oil pollution and no dust; no empty drum phenomenon.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011586304.2A CN112662281B (en) | 2020-12-29 | 2020-12-29 | Breathable epoxy floor coating |
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| CN202011586304.2A CN112662281B (en) | 2020-12-29 | 2020-12-29 | Breathable epoxy floor coating |
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| CN112662281B true CN112662281B (en) | 2021-11-09 |
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| CN114395309A (en) * | 2021-11-28 | 2022-04-26 | 安徽朗凯奇建材有限公司 | Water-based epoxy resin emulsion floor paint and construction process thereof |
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| AU2006347731B2 (en) * | 2006-08-31 | 2012-09-13 | Kimberly-Clark Worldwide, Inc. | Highly breathable biodegradable films |
| CN100549114C (en) * | 2006-12-19 | 2009-10-14 | 盐城纺织职业技术学院 | Antiseptic and antistatic terrace paint and preparation method thereof |
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