CN102181225A - Water-cured polyurethane waterproof coating - Google Patents
Water-cured polyurethane waterproof coating Download PDFInfo
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- CN102181225A CN102181225A CN 201110033097 CN201110033097A CN102181225A CN 102181225 A CN102181225 A CN 102181225A CN 201110033097 CN201110033097 CN 201110033097 CN 201110033097 A CN201110033097 A CN 201110033097A CN 102181225 A CN102181225 A CN 102181225A
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Abstract
The invention discloses a single-component water-cured polyurethane waterproof coating. The single-component coating is a NCO group terminated prepolymer obtained by the reaction of polyether polyol and polyisocyanate after the polyether polyol is hydrated in vacuum; and the weight ratio of the polyether polyol to the polyisocyanate is (2-10): 1. The coating is ecological and environment-friendly, has excellent mechanical property, good high and low temperature resistance and good solvent resistance and corrosion resistance, can be constructed on moist basal planes, does not affect adhesive property, and has high cost performance, low specific weight, low consumption in unit area and low comprehensive manufacturing cost.
Description
Technical field:
The present invention relates to a kind of building coating field that is applied to especially can be at the polyurethane water-proof paint of moist basal plane construction, and particularly a kind of is the environment-friendly type polyurethane waterproofing paint and the preparation technology thereof of solidifying agent with water.
Background technology:
Polyurethane water-proof paint is a kind of novel high-grade water-proof material, has that integral waterproofing effect excellence, intensity height, good springiness, cohesive force are strong, a high-low temperature resistant, corrosion-resistant, easy construction, is subjected to the favor of anti-hydrosphere both at home and abroad.
Polyurethane water-proof paint is that the sixties in 20th century is at a kind of novel high polymer water-proof material American-European and that Japan occurs, be the two-pack liquid rubber type polyurethane waterproof paint of U.S. rubber for tire company development the earliest, be generalized to Canada, the Middle East and Southeast Asian countries afterwards again.Germany succeeded in developing solvent-free polyurethane waterproof coating material in 1962, was used for concrete protective coatings and building waterproof layer.Japan developed rapidly after du pont company is introduced the polyurethane water-proof paint patented technology in 1964, Japan in 1969 have issued the industrial standards of polyurethane water-proof paint, at present, external polyurethane water-proof paint occupies an important position in building water-proof paint, its production technology comparative maturity, great variety of goods, application are general, can produce the polyurethane water-proof paint of difference in functionality according to the requirement of different waterproofing works.
Since late 1970s, along with China's scientific and technological progress and chemical building material industrial expansion, polyurethane water-proof paint has also obtained development.The theoretical investigation of polyether(poly)urethane waterproof paint was carried out in the Architectural Engineering Inst., Beijing City since 1974.After the nineties, polyurethane water-proof paint is obtained and is developed rapidly, and nineteen ninety, the Ministry of Construction classified polyurethane water-proof paint one of as the 8th Five-Year Plan for national economic and social development key popularized project.Through the development of two more than ten years, especially the developing rapidly and widespread use of age, China has formed great variety of goods, the different polyurethane water-proof paint of performance gradually.
Along with the enhancing of people's environmental consciousness and the progress of science and technology, tar polyurethane waterproofing paint is because the health of contaminate environment, harm humans, its application is restricted day by day, and country is just advocating and adopting non-tar polyurethane waterproofing paint and polyether(poly)urethane waterproof paint.In the prior art polyurethane water-proof paint many with 3,3 '-two chloro-4,4 '-diaminodiphenylmethane (MOCA) is as solidifying agent, and MOCA has carcinogenic danger, and environment and human health are had very big harm.The water cure polyurethane water-proof paint is a polyether-type; the high-grade synthetic macromolecular waterproof coating of solvent-free environment-protection; with traditional tar oil type; the petroleum pitch polyurethane water-proof paint is compared; solvent-free volatilization is arranged; nontoxic; tasteless; it is pollution-free to construct; solidify advantages such as rapid; meet Ecodevelopment and requirement on environmental protection; joining when lacquer in construction is solidifying agent with water; these are obviously different with other lists or two component polyurethane waterproof paint; embody the new approaches that polyurethane water-proof paint is developed; novel process; has vast market prospect; but the commercially available prod is rarely found, is difficult to satisfy client's demand.
Summary of the invention:
The purpose of this invention is to provide simple water cure polyurethane water-proof paint of a kind of environmental protection and preparation method thereof, parameters such as content, isocyanate index by control NCO under study for action, obtain preparing the optimum technology parameter of this water cure polyurethane water-proof paint, provide Technical Reference for preparing high performance water cure polyurethane water-proof paint.
The invention provides a kind of single component water cure polyurethane water-proof paint, wherein said onepot coating is by the end NCO base performed polymer that obtains with polyisocyanates reaction after the polyether glycol vacuum hydro-extraction, is 2～10: 1 in the ratio of weight ratio polyether glycol and polyisocyanates.
Further contain softening agent, catalyzer, defoamer, coupling agent and/or filler.
Described polyether glycol is selected from polyether glycol class, polyether triol class, and its relative molecular mass is 2000～5000, and hydroxyl value is 30～60mgKOH/g.
Described polyisocyanates is selected from the aromatic diisocyanate class.
Described polyisocyanates is selected from tolylene diisocyanate, diphenylmethanediisocyanate.
Described softening agent is selected from phthalic ester or Dinonylphthalate.
Described catalyzer is selected from stannous octoate, dibutyl tin laurate, and described defoamer is a silicone antifoam agent, and described coupling agent is a silane coupling agent.
Described filler is mineral filler, and it is selected from kaolin, coarse whiting, talcum powder or its mixture.
Further contain pigment, dispersion agent, gas absorbent, water-retaining agent and/or anti-sedimentation agent in the described coating.
The water of 5%～30% weight percent of adding single component water cure polyurethane water-proof paint is curable during use.
Water cure polyurethane water-proof paint of the present invention directly adds water when using and makees solidifying agent, and active group in the coating and water molecule reaction solidify, and form tough and tensile, whippy waterproof coating.
Its coating has excellent mechanical property and chemical property, has excellent waterproof property simultaneously.This coating does not contain doubts to carcinogenic material mocha, does not contain tar, pitch, solvent and heavy metal, ecological, environmental protective, product belongs to nontoxic product through disease prevention and control center, Beijing according to GB15193.3-2003 " acute toxicity test " standard detection, and product meets the limits of harmful substances index request of HJ/T 201-2005 " environmental labelling product technical requirements water-borne coatings "; Can not influence adhesive property in moist basal plane construction, its wet base cohesive strength can reach 1.2Mpa; High performance-price ratio, proportion is little, and 0.9～1.2kg is used in filming of every square metre every millimeter thickness approximately, and the unit surface consumption is few, and comprehensive cost is low.
Embodiment
Below in conjunction with embodiment the present invention is described in further detail.
Embodiment 1:
1253g polyether Glycols, 210g polyether-tribasic alcohol, 853g softening agent, 8.4g dispersion agent are added in the four-hole reaction flask of 5L, be warmed up to 80 ℃, add 259g talcum powder and 259g coarse whiting, be warming up to 100 ℃～120 ℃ vacuum hydro-extraction 4h, cooling is below 50 ℃, add the 224g tolylene diisocyanate, heating heats up at a slow speed, 80～85 ℃ of controlled temperature, vacuum condition is reaction 2.5h down, lowers the temperature 50～60 ℃, adds defoamer, catalyzer, coupling agent, water-retaining agent, gas absorbent, stir 1h, the discharging sealing promptly gets waterproof paint of the present invention.
Embodiment 2:
1253g polyether Glycols, 210g polyether-tribasic alcohol, 853g softening agent, 8.4g dispersion agent are added in the four-hole reaction flask of 5L, be warmed up to 80 ℃, add 259g talcum powder and 259g coarse whiting, be warming up to 100 ℃～120 ℃ vacuum hydro-extraction 4h, cooling is below 50 ℃, add the 322g diphenylmethanediisocyanate, heating heats up at a slow speed, 80～85 ℃ of controlled temperature, vacuum condition is reaction 2.5h down, lowers the temperature 50～60 ℃, adds defoamer, catalyzer, coupling agent, water-retaining agent, gas absorbent, stir 1h, the discharging sealing promptly gets waterproof paint of the present invention.
Embodiment 3:
1253g polyether Glycols, 210g polyether-tribasic alcohol, 853g softening agent, 8.4g dispersion agent are added in the four-hole reaction flask of 5L, be warmed up to 80 ℃, add 318g kaolin and 318g coarse whiting, be warming up to 100 ℃～120 ℃ vacuum hydro-extraction 4h, cooling is below 50 ℃, add the 224g tolylene diisocyanate, heating heats up at a slow speed, 80～85 ℃ of controlled temperature, vacuum condition is reaction 2.5h down, lowers the temperature 50～60 ℃, adds defoamer, catalyzer, coupling agent, water-retaining agent, gas absorbent, stir 1h, the discharging sealing promptly gets waterproof paint of the present invention.
Embodiment 4:
756g polyether Glycols, 148g polyether-tribasic alcohol, 762g softening agent, 7.9g dispersion agent are added in the four-hole reaction flask of 5L, be warmed up to 80 ℃, add 276g kaolin and 276g coarse whiting, be warming up to 100 ℃～120 ℃ vacuum hydro-extraction 4h, cooling is below 50 ℃, add the 452g tolylene diisocyanate, heating heats up at a slow speed, 80～85 ℃ of controlled temperature, vacuum condition is reaction 2.5h down, lowers the temperature 50～60 ℃, adds defoamer, catalyzer, coupling agent, water-retaining agent, gas absorbent, stir 1h, the discharging sealing promptly gets waterproof paint of the present invention.
Embodiment 5:
1253g polyether Glycols, 210g polyether-tribasic alcohol, 800g softening agent, 7.9g dispersion agent are added in the four-hole reaction flask of 5L, be warmed up to 80 ℃, add 300g kaolin and 300g coarse whiting, be warming up to 1 ℃ of vacuum hydro-extraction 4h, cooling is below 5 ℃, add the 146g tolylene diisocyanate, heating heats up at a slow speed, 8 ℃ of controlled temperature, vacuum condition is reaction 2.5h down, lowers the temperature 5 ℃, adds defoamer, catalyzer, coupling agent, water-retaining agent, gas absorbent, stir 1h, the discharging sealing promptly gets waterproof paint of the present invention.
Performance test:
The water cure polyurethane water-proof paint of above-mentioned preparation added 20% water mixing and stirring and film, under specified requirements, carry out the test of some physical and mechanical properties by the test method GB/T 16777-2008 of architectural waterproof material.Its table 1 has been listed some fundamental property test results of water cure polyurethane water-proof paint.
The The performance test results of table 1 water cure polyurethane water-proof paint
Performance index embodiment 1 embodiment 2 embodiment 3
Tensile strength/MPa 2.43 2.67 4.17
Elongation at break/% 800 783 723
Low-temperature bending/℃-40-40-40
Tear strength/(N/mm) 13.56 15.98 21.06
Watertightness/0.3MPa * 30min is waterproof waterproof
Moist basal plane caking ability/Mpa 0.86 1.00 1.21
As can be seen from the above table, every performance of the product of embodiment 1,2,3 preparations has has all met and exceeded the technical indicator of GB/T 19250-2003 known in the art.
Claims (9)
1. single component water cure polyurethane water-proof paint, wherein said onepot coating is by the end NCO base performed polymer that obtains with polyisocyanates reaction after the polyether glycol vacuum hydro-extraction, is 2～10: 1 in the ratio of weight ratio polyether glycol and polyisocyanates.
2. single component water cure polyurethane water-proof paint according to claim 1 wherein further contains softening agent, catalyzer, defoamer, coupling agent and/or filler in the coating.
3. single component water cure polyurethane water-proof paint as claimed in claim 1 or 2 is characterized in that described polyether glycol is selected from polyether glycol class, polyether triol class, and its relative molecular mass is 2000～5000, and hydroxyl value is 30～60mgKOH/g.
4. single component water cure polyurethane water-proof paint according to claim 1 and 2 is characterized in that described polyisocyanates is selected from the aromatic diisocyanate class.
5. single component water cure polyurethane water-proof paint as claimed in claim 4, wherein said polyisocyanates is selected from tolylene diisocyanate, diphenylmethanediisocyanate.
6. single component water cure polyurethane water-proof paint according to claim 2 is characterized in that described softening agent is selected from phthalic ester or Dinonylphthalate.
7. single component water cure polyurethane water-proof paint according to claim 2 is characterized in that described catalyzer is selected from stannous octoate, dibutyl tin laurate, and described defoamer is a silicone antifoam agent, and described coupling agent is a silane coupling agent.
8. water cure polyurethane water-proof paint according to claim 2 is characterized in that described filler is mineral filler, and it is selected from kaolin, coarse whiting, talcum powder or its mixture.
9. water cure polyurethane water-proof paint according to claim 1 is characterized in that further containing in the described coating pigment, dispersion agent, gas absorbent, water-retaining agent and/or anti-sedimentation agent.
Priority Applications (1)
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| CN 201110033097 CN102181225A (en) | 2011-01-31 | 2011-01-31 | Water-cured polyurethane waterproof coating |
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| CN 201110033097 CN102181225A (en) | 2011-01-31 | 2011-01-31 | Water-cured polyurethane waterproof coating |
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| CN103484009A (en) * | 2013-09-23 | 2014-01-01 | 句容市睿远科技有限公司 | Waterproof paint for high-speed rail and preparation method thereof |
| CN103540254A (en) * | 2013-09-30 | 2014-01-29 | 潍坊市宏源防水材料有限公司 | Preparation method of single-component water-cured polyurethane waterproof paint |
| CN103756545A (en) * | 2013-12-30 | 2014-04-30 | 刘太安 | Polyurethane waterproof coating and production method thereof |
| CN103819951A (en) * | 2012-11-16 | 2014-05-28 | 季爱英 | Preparation method of waterproof coating |
| CN103965765A (en) * | 2013-02-01 | 2014-08-06 | 烟台东聚防水保温工程有限公司 | Single-component moisture curable polyurethane waterproof coating and preparation method thereof |
| CN103980810A (en) * | 2014-05-19 | 2014-08-13 | 上海正欧实业有限公司 | Waterproof solvent-free single-component polyurethane lacquer used on wet surface and preparation method thereof |
| CN104031545A (en) * | 2014-06-11 | 2014-09-10 | 江苏通铨防水材料科技有限公司 | W-OH-WP permeable reactive waterproof material and preparation method and using method thereof |
| CN104130645A (en) * | 2014-06-26 | 2014-11-05 | 安徽快来防水防腐有限公司 | Waterproof coating with high adhesive strength |
| CN104194609A (en) * | 2014-09-11 | 2014-12-10 | 北京东方雨虹防水技术股份有限公司 | Low-VOC (volatile organic compound) environment-friendly single-component polyurethane waterproof coating |
| CN104693781A (en) * | 2015-03-06 | 2015-06-10 | 济南骄泰信息技术有限公司 | Preparation method of polyurethane waterproof material |
| CN105670488A (en) * | 2013-01-18 | 2016-06-15 | 重庆市智翔铺道技术工程有限公司 | Bridge deck waterproof material |
| CN105694727A (en) * | 2013-01-18 | 2016-06-22 | 重庆市智翔铺道技术工程有限公司 | Waterproof material with excellent performance and preparation method thereof |
| CN105885665A (en) * | 2014-11-28 | 2016-08-24 | 天津市禹神建筑防水材料有限公司 | One-component polyurethane waterproof coating |
| CN105885668A (en) * | 2016-06-08 | 2016-08-24 | 胡军 | Zero-VOC waterborne soft-feel coating and preparation method thereof |
| CN106010188A (en) * | 2016-06-29 | 2016-10-12 | 浙江鲁班建筑防水有限公司 | Self-repaired polyurethane waterproof coating and preparation method thereof |
| CN106752845A (en) * | 2016-12-23 | 2017-05-31 | 广西宾阳县荣良新材料科技有限公司 | A kind of polyurethane building coating |
| CN107227108A (en) * | 2017-04-28 | 2017-10-03 | 华北水利水电大学 | For road, the water-repellent paint of bridge and preparation method thereof |
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| CN105694727B (en) * | 2013-01-18 | 2017-12-22 | 重庆市智翔铺道技术工程有限公司 | A kind of waterproof material of excellent performance and preparation method thereof |
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| CN105694727A (en) * | 2013-01-18 | 2016-06-22 | 重庆市智翔铺道技术工程有限公司 | Waterproof material with excellent performance and preparation method thereof |
| CN103965765A (en) * | 2013-02-01 | 2014-08-06 | 烟台东聚防水保温工程有限公司 | Single-component moisture curable polyurethane waterproof coating and preparation method thereof |
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| CN107227108A (en) * | 2017-04-28 | 2017-10-03 | 华北水利水电大学 | For road, the water-repellent paint of bridge and preparation method thereof |
| CN107722228A (en) * | 2017-09-07 | 2018-02-23 | 河南金拇指防水科技股份有限公司 | A kind of superpower caking property polyurethane waterproof material manufacture method and waterproof material |
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| CN107603453A (en) * | 2017-09-25 | 2018-01-19 | 中国石油天然气集团公司 | A kind of polyurethane anticorrosive coating and preparation method thereof |
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