CN110551445A - Water-repellent coating and use thereof - Google Patents
Water-repellent coating and use thereof Download PDFInfo
- Publication number
- CN110551445A CN110551445A CN201910879750.3A CN201910879750A CN110551445A CN 110551445 A CN110551445 A CN 110551445A CN 201910879750 A CN201910879750 A CN 201910879750A CN 110551445 A CN110551445 A CN 110551445A
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- Prior art keywords
- coating
- mass
- waterproof
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- eaves gutter
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
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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)
- Paints Or Removers (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention discloses a waterproof coating, which consists of a bottom coating and a surface coating; the bottom coating adopts polyurethane waterproof paint; the top coating adopts aliphatic polyurethane weather-resistant waterproof paint. The waterproof coating can be used for waterproofing a concrete eaves gutter, the bottom coating has a waterproof sealing effect on the eaves gutter, and the top coating can reduce the damage of the environment on the bottom coating and prolong the service life of the bottom coating.
Description
Technical Field
The invention relates to a waterproof coating and application thereof.
Background
The eaves gutter is the catch basin on room eaves limit, can collect the rainwater and make the rainwater overflow to outdoor along the ditch limit. Eaves gutter adopts concrete or metal preparation to form usually, because the easy corrosion of metal eaves gutter, and the metal eaves gutter is assembled to exist that welded joint leaks easily, so eaves gutter product is with the concrete at present mostly.
And the concrete eaves gutter can have the crack possibility of leaking in long-term use, if do not carry out water repellent to it at the eaves gutter building initial stage, under the combined action of outdoor illumination, cold and hot, wind and rain, the concrete eaves gutter can produce crack, pot hole, and when raining, crack, pot hole can amass the rainwater, lead to crack, pot hole to continuously increase to the water collection performance that influences the eaves gutter.
At present to the water repellent of concrete eaves gutter, adopt the eaves gutter to coat one deck waterproof coating or the mode that one deck waterproofing membrane was laid to the eaves gutter usually, but these two kinds of modes have following problem: 1) the mode of coating a layer of waterproof coating on the eaves gutter often needs to cover a concrete protective layer on the surface of the waterproof coating, so that the eaves gutter load is greatly increased; 2) the mode of laying a layer of waterproof coiled material on the eaves gutter can select the exposed waterproof coiled material without covering a concrete protective layer, but the burden of the eaves gutter can be increased because the waterproof coiled material is heavier; the waterproof coiled materials need to be lapped, and a large number of waterproof weak points exist in a plurality of lapping positions, so that the waterproof effect is influenced; in addition, waterproofing membrane self is thicker, and the drainage slope of eaves gutter itself can be eliminated to lapped overlapping department, influences drainage effect.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a waterproof coating, which consists of a bottom coating and a surface coating; the bottom coating adopts polyurethane waterproof paint; the top coating adopts aliphatic polyurethane weather-resistant waterproof paint.
Preferably, the polyurethane waterproof coating is prepared by mixing the following components: 5-8 parts by mass of isocyanate, 21-27 parts by mass of polyether polyol, 15-22 parts by mass of plasticizer, 0.03-0.1 part by mass of dispersant, 35-50 parts by mass of filler, 0.05-0.2 part by mass of dehydrating agent, 0.5-2 parts by mass of thixotropic agent, 0.03-0.2 part by mass of catalyst, 0.2-1 part by mass of defoaming agent and 0-15 parts by mass of solvent.
Preferably, the isocyanate is selected from one or two of diphenyl, methane diisocyanate and toluene diisocyanate.
Preferably, the polyether polyol is selected from one or more of polyether, dihydric alcohol and polyether trihydric alcohol.
Preferably, the plasticizer is selected from one or more of DINP, DIDP, chlorinated paraffin and polyol ester.
Preferably, the thickness of the bottom coating is 1.5-3 mm.
Preferably, the thickness of the top coating is 0.08-0.12 mm.
The invention also provides application of the waterproof coating, and the waterproof coating is used for waterproofing the concrete eaves gutter.
Preferably, the primer layer is directly coated on the inner wall and the top wall of the concrete gutter, and the primer layer completely covers the inner wall and the top wall of the concrete gutter; the topcoat completely covers the basecoat.
The waterproof coating can be used for waterproofing a concrete eaves gutter, the bottom coating has a waterproof sealing effect on the eaves gutter, and the top coating can reduce the damage of the environment on the bottom coating and prolong the service life of the bottom coating.
The waterproof coating of the invention can achieve the aim of preventing the gutter from being waterproof in the simplest and most light mode.
Compared with the existing mode of coating a layer of waterproof coating on the eaves gutter, the method can avoid the problem that the eaves gutter load is greatly increased due to the fact that a concrete protective layer is covered on the surface of the waterproof coating.
Compared with the existing mode of paving a layer of waterproof coiled material on the gutter, the invention can avoid the problems caused by the adoption of the waterproof coiled material because the waterproof coiled material is not needed.
The polyurethane waterproof coating is called as 'liquid rubber', is one of waterproof materials with the best waterproof quality internationally acknowledged, and the waterproof performance of the polyurethane waterproof coating is mainly influenced by three indexes of tensile strength, elongation at break and bonding strength; the physical property index of the polyurethane waterproof coating meets and is higher than the related index requirements of national standard GB/T19250 plus 2013 polyurethane waterproof coating, wherein the tensile strength and the elongation at break are tested according to GB/T16777-2008 chapter 9, and the tensile strength of the polyurethane waterproof coating is measured to be 2.52MPa (the national standard requirement is more than or equal to 2.0 MPa) and the elongation at break is 679% (the national standard requirement is more than or equal to 500%), and the good tensile property can resist the damage of structural cracking and deformation to a coating film, so that the strength and the waterproofness of the polyurethane waterproof coating are ensured; the bonding strength performance is tested according to the method A in GB/T16777-.
Detailed Description
The following further describes embodiments of the present invention with reference to examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The invention provides a waterproof coating, which can be used for waterproofing a concrete gutter and consists of a bottom coating and a surface coating;
The bottom coating is directly coated on the inner wall and the top wall of the concrete eaves gutter, and the bottom coating completely covers the inner wall and the top wall of the concrete eaves gutter; the thickness of the bottom coating is 1.5-3 mm (preferably 2 mm);
The bottom coating adopts polyurethane waterproof paint;
The polyurethane waterproof coating is prepared by mixing the following components: 5-8 parts by mass of isocyanate, 21-27 parts by mass of polyether polyol, 15-22 parts by mass of plasticizer, 0.03-0.1 part by mass of dispersant, 35-50 parts by mass of filler, 0.05-0.2 part by mass of dehydrating agent, 0.5-2 parts by mass of thixotropic agent, 0.03-0.2 part by mass of catalyst, 0.2-1 part by mass of defoaming agent and 0-15 parts by mass of solvent;
The isocyanate is selected from one or two of diphenyl, methane diisocyanate and toluene diisocyanate;
The polyether polyol is selected from one or more of polyether, dihydric alcohol and polyether trihydric alcohol;
The plasticizer is selected from one or more of DINP, DIDP, chlorinated paraffin and polyol ester;
The surface coating adopts aliphatic polyurethane weather-resistant waterproof paint; the top coat completely covers the base coat; the thickness of the surface coating is 0.08-0.12 mm (preferably 0.1 mm).
The waterproof coating can be used for waterproofing a concrete eaves gutter, the bottom coating has a waterproof sealing effect on the eaves gutter, and the top coating can reduce the damage of the environment on the bottom coating and prolong the service life of the bottom coating.
the waterproof coating of the invention can achieve the aim of preventing the gutter from being waterproof in the simplest and most light mode.
Compared with the existing mode of coating a layer of waterproof coating on the eaves gutter, the method can avoid the problem that the eaves gutter load is greatly increased due to the fact that a concrete protective layer is covered on the surface of the waterproof coating.
Compared with the existing mode of paving a layer of waterproof coiled material on the gutter, the invention can avoid the problems caused by the adoption of the waterproof coiled material because the waterproof coiled material is not needed.
The polyurethane waterproof coating is called as 'liquid rubber', is one of waterproof materials with the best waterproof quality internationally acknowledged, and the waterproof performance of the polyurethane waterproof coating is mainly influenced by three indexes of tensile strength, elongation at break and bonding strength; the physical property index of the polyurethane waterproof coating meets and is higher than the related index requirements of national standard GB/T19250 plus 2013 polyurethane waterproof coating, wherein the tensile strength and the elongation at break are tested according to GB/T16777-2008 chapter 9, and the tensile strength of the polyurethane waterproof coating is measured to be 2.52MPa (the national standard requirement is more than or equal to 2.0 MPa) and the elongation at break is 679% (the national standard requirement is more than or equal to 500%), and the good tensile property can resist the damage of structural cracking and deformation to a coating film, so that the strength and the waterproofness of the polyurethane waterproof coating are ensured; the bonding strength performance is tested according to the method A in GB/T16777-.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. The waterproof coating is characterized by consisting of a bottom coating and a surface coating; the bottom coating adopts polyurethane waterproof paint; the top coating adopts aliphatic polyurethane weather-resistant waterproof paint.
2. the waterproof coating of claim 1, wherein the polyurethane waterproof coating is prepared by mixing the following components: 5-8 parts by mass of isocyanate, 21-27 parts by mass of polyether polyol, 15-22 parts by mass of plasticizer, 0.03-0.1 part by mass of dispersant, 35-50 parts by mass of filler, 0.05-0.2 part by mass of dehydrating agent, 0.5-2 parts by mass of thixotropic agent, 0.03-0.2 part by mass of catalyst, 0.2-1 part by mass of defoaming agent and 0-15 parts by mass of solvent.
3. the water resistant coating of claim 2 wherein the isocyanate is selected from one or two of diphenyl, methane diisocyanate, toluene diisocyanate.
4. The water resistant coating of claim 2 wherein the polyether polyol is selected from one or more of polyether, diol, and polyether triol.
5. The water resistant coating of claim 2 wherein the plasticizer is selected from one or more of DINP, DIDP, chlorinated paraffin, polyol ester.
6. The waterproof coating according to claim 1, wherein the thickness of the primer layer is 1.5 to 3 mm.
7. The waterproof coating of claim 1, wherein the topcoat has a thickness of 0.08 to 0.12 mm.
8. use of a water repellent coating according to any of claims 1 to 7, characterized in that the water repellent coating is used for waterproofing of concrete gutters.
9. The use of a water repellent coating according to claim 8, wherein the primer coating is applied directly to the inner and top walls of the concrete gutter and completely covers the inner and top walls of the concrete gutter; the topcoat completely covers the basecoat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910879750.3A CN110551445A (en) | 2019-09-18 | 2019-09-18 | Water-repellent coating and use thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910879750.3A CN110551445A (en) | 2019-09-18 | 2019-09-18 | Water-repellent coating and use thereof |
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| Publication Number | Publication Date |
|---|---|
| CN110551445A true CN110551445A (en) | 2019-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910879750.3A Pending CN110551445A (en) | 2019-09-18 | 2019-09-18 | Water-repellent coating and use thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103525285A (en) * | 2013-09-27 | 2014-01-22 | 中国铁道科学研究院金属及化学研究所 | Scumbling type polyurethane waterproof paint and usage method thereof |
| CN104745066A (en) * | 2015-04-13 | 2015-07-01 | 中国科学院青岛生物能源与过程研究所 | Preparation method of single-component polyurethane waterproofing paint |
| CN109457879A (en) * | 2018-12-27 | 2019-03-12 | 广州市明煌保温节能材料有限公司 | A kind of roofing waterproof heat insulation integrated material and its spray paint and its manufacturing process |
| CN109554101A (en) * | 2018-11-15 | 2019-04-02 | 唐山东方雨虹防水技术有限责任公司 | A kind of polyurethane water-proof paint |
| CN110512808A (en) * | 2019-08-09 | 2019-11-29 | 江苏凯伦建材股份有限公司 | The waterproof construction and its construction method of pitched roof eaves gutter |
-
2019
- 2019-09-18 CN CN201910879750.3A patent/CN110551445A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103525285A (en) * | 2013-09-27 | 2014-01-22 | 中国铁道科学研究院金属及化学研究所 | Scumbling type polyurethane waterproof paint and usage method thereof |
| CN104745066A (en) * | 2015-04-13 | 2015-07-01 | 中国科学院青岛生物能源与过程研究所 | Preparation method of single-component polyurethane waterproofing paint |
| CN109554101A (en) * | 2018-11-15 | 2019-04-02 | 唐山东方雨虹防水技术有限责任公司 | A kind of polyurethane water-proof paint |
| CN109457879A (en) * | 2018-12-27 | 2019-03-12 | 广州市明煌保温节能材料有限公司 | A kind of roofing waterproof heat insulation integrated material and its spray paint and its manufacturing process |
| CN110512808A (en) * | 2019-08-09 | 2019-11-29 | 江苏凯伦建材股份有限公司 | The waterproof construction and its construction method of pitched roof eaves gutter |
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Application publication date: 20191210 |