CN104087147A - Monocomponent polyurethane waterproof paint and preparation method thereof - Google Patents
Monocomponent polyurethane waterproof paint and preparation method thereof Download PDFInfo
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Abstract
The invention provides a monocomponent polyurethane waterproof paint and a preparation method thereof. The monocomponent polyurethane waterproof paint comprises the following components in parts by weight: 200 to 300 parts of polyether polyol, 100 to 200 parts of toluene diisocyanate (TDI), 60 to 100 parts of organic solvent, 240 to 400 parts of filling material, 30 to 50 parts of defoaming agent, 200 to 250 parts of plasticizer, 50 to 80 parts of dispersing agent and 5 to 10 parts of catalyst. The monocomponent polyurethane waterproof paint is nontoxic, free of pollution, high in curing speed, short in construction period, low in cost and good in paintcoat performance.
Description
Technical field
The present invention relates to a kind of coating, relate in particular to a kind of single-component polyurethane water-proof paint and preparation method thereof.
Background technology
Polyurethane water-proof paint, with its excellent product properties and processing diversity, has become global coatings industry one of kind with fastest developing speed nearly ten years.The average growth rate per annum of urethane has reached 2 times of coating industry average growth rate abroad, has exceeded 200,000 tons in the annual production of China's polyurethane coating, accounts for the 8-10% of national coating ultimate production, and total quantity consumed occupies the 3rd of each coating total amount.
At present, polyurethane water-proof paint, because of its superior physics, chemical property, has been widely recognized and applies in waterproofing industry.Polyurethane water-proof paint has dividing of single component, two-pack, and two components and single-component are asphaltic base ep-type material.Two components divide two groups of first, second conventionally, and first component is with the raw material such as polyether resin and vulcabond, the huge carbamate prepolymer that contains diisocyanate based (NOC) of making through polyreaction; Component B is that glue crosslinking agent, promotor, toughner, tackifier, mould inhibitor, weighting agent and thinner etc. are mixed and processed.3 of the conventional carcinogenic substance of double-composition polyurethane waterproof paint, 3'-bis-is chloro-4, and 4'-diaminodiphenyl-methane is as solidifying agent, and contains a large amount of organic solvents, and it is unfavorable that these materials are worked as healthy and environmental facies.Single-component is to utilize admixtured polyether to dewater, and adds vulcabond and various auxiliary agent to carry out epoxide modified making.Mono-composition poyurethane water-proof paint construction is comparatively easy, does not need mix and blend, and tackify not before brushing, has some superiority.External existing multiple single-component polyurethane water-proof paint, its physicals is basic identical with two component products.The single-component polyurethane water-proof paint that the U.S. " creates " company high and produces is exactly one of them.Although existing non-solvent single-component water-proof asphalt-base polyurethane paint has been avoided the problem of dual-component coating construction trouble, owing to being the coating of preparing based on pitch, it still constitutes a threat to environment protection.In addition, existing mono-component waterproofing paint is by moisture curing, and set time is long, in thick coating inside, affects waterproof effect thereby easily produce bubble.
Summary of the invention
The object of the invention is, provide a kind of nontoxic, pollution-free, curing speed is fast, short construction period, cost is low, single-component polyurethane water-proof paint that coating performance is good and preparation method thereof.
In order to address the above problem, the present invention is by the following technical solutions: a kind of mono-composition poyurethane water-proof paint, comprise the component of following weight part: polyether glycol 200-300 part, toluene-2,4-diisocyanate (TDI) 100-200 part, organic solvent 60-100 part, filler 240-400 part, defoamer 30-50 part, softening agent 200-250 part, dispersion agent 50-80 part, catalyzer 5-10 part.
Described polyether glycol is the mixture that polyoxypropyleneglycol (N-220) and polyoxytrimethylene triol (N-330) mix according to 8:1-10:1 ratio;
Described toluene-2,4-diisocyanate (TDI), containing 2,4 toluene-2,4-diisocyanates and two kinds of isomer of 2,6 toluene-2,4-diisocyanates, adopts 80/20 isomery to be compared to raw material, and its ratio control is in 8%.
Described organic solvent is the mixture that one or more arbitrary proportions in toluene, dimethylbenzene, acetone mix.
Described filler is the mixture that one or more arbitrary proportions in granularity 600～800 object light calcium carbonates, water-ground limestone, talcum powder, kaolin, silica powder mix.
Described catalyzer is the mixture that any one or the two or more arbitrary proportion in stannous octoate, dibutyl tin laurate, diacetate dibutyl tin mixes.
Described defoamer is silicone antifoam agent.
Mono-composition poyurethane water-proof paint of the present invention can also comprise solidifying agent 10-50 part, described solidifying agent Wei oxazolidine latent curing agent.
Mono-composition poyurethane water-proof paint of the present invention can also comprise pigment 30-50 part, and described pigment is any one in ferric oxide, chromoxide green, lemon yellow, medium chrome yellow medium yellow, zinc sulfide white, ultramarine, pthalocyanine blue, carbon black.
For strengthening the flame retardant effect of waterproof paint of the present invention, can also add a certain amount of fire retardant.Described fire retardant can be halogenated flame retardant, phosphorus flame retardant, inorganic combustion inhibitor or nitrogenated flame retardant.
The preparation method of mono-composition poyurethane water-proof paint of the present invention is:
(1) polyether glycol is added to stir post-heating to 75 DEG C-80 DEG C of softening agent, dispersion agent;
(2) slowly add filler, pigment, be warming up to 115 DEG C-120 DEG C after stirring, 2.5h dewaters under vacuum-0.08MPa--0.09MPa condition;
(3) after dehydration, add 2/3 organic solvent while cooling to 75 DEG C-80 DEG C, then add TDI stirring reaction 2-2.5h at normal pressure and 80 DEG C of-85 DEG C of temperature;
(4) add again catalyzer, defoamer, solidifying agent, stir and at 105 DEG C of-110 DEG C of insulation reaction 1.5h;
(5) be cooled to 70 DEG C-80 DEG C, add residue organic solvent, cooling discharging after stirring 20min.
Mono-composition poyurethane water-proof paint of the present invention is mixed, take appropriate sample, evenly brush on the mould that coats releasing agent with scraper plate, divide and be painted with for 2～3 times, make final coating thickness be approximately 1.5mm, be coated with and scrape and will after upper once film surface drying, carry out each time.After having brushed for the last time, be placed on (23 ± 2) DEG C, relative humidity 65% ± 15% (standard conditions) was tested by standard after 7 days.Result shows that single-component polyurethane water-proof paint tensile strength of the present invention reaches 5-22Mpa, and elongation at break is greater than 200%, the waterproof paint that can directly construct of suitable various varying environments.The present invention is specially adapted to waterproof in the middle of cable, explosion-proof application, the failure rate that occurs water inlet after cable intermediate joint brushing waterproof paint of the present invention obviously reduces, waterproof, explosion-proof effect are ideal, and in the time of middle head fail, waterproof paint of the present invention can not produce again combustion-supporting effect, very little to peripheral cable line influence.
The present invention has following beneficial effect:
(1) by rationally adjusting the mass ratio of polyoxypropyleneglycol (N-220) and polyoxytrimethylene triol (N-330), make coating there is good stretching, extension intensity and elongation at break.
(2) massfraction of NCO in the strict hierarchy of control, crossing high energy increases cross-linking density and the good solubility-resistence of film, tensile strength is also higher, but film more firmly, more crisp, not shock-resistant, unit elongation is little.The film of too low formation feels like jelly, stickness, and tensile strength is low, and water-fast and chemical resistance declines, and has good physicals and chemical stability in storage so the present invention has ensured coating, and coating surface in storage process does not have skinning.
(3) by adding appropriate softening agent, both improve the low temperature flexibility of coating, reduced again the solid content of coating, improved the application property of coating.
(4) the present invention can be under-14 DEG C of-40 DEG C of conditions film forming, surface drying time is less than 4 hours, the time of doing solid work is less than 8 hours, film forming caudacoria surface is more smooth.
Embodiment
1. 1 kinds of mono-composition poyurethane water-proof paints of embodiment, comprise the component of following weight part:
200 parts, the mixture that polyoxypropyleneglycol (N-220) and polyoxytrimethylene triol (N-330) mix according to the ratio of 8:1,100 parts of toluene-2,4-diisocyanates (TDI), 60 parts of organic solvents, 240 parts of fillers, 30 parts of defoamers, 200 parts, softening agent, 50 parts of dispersion agents, 5 parts of catalyzer.
Preparation method is:
(1) polyether glycol is added to stir post-heating to 75 DEG C-80 DEG C of softening agent, dispersion agent;
(2) slowly add filler, pigment, be warming up to 115 DEG C-120 DEG C after stirring, 2.5h dewaters under vacuum-0.08MPa--0.09MPa condition;
(3) after dehydration, add 2/3 organic solvent while cooling to 75 DEG C-80 DEG C, then add TDI stirring reaction 2-2.5h at normal pressure and 80 DEG C of-85 DEG C of temperature;
(4) add again catalyzer, defoamer, solidifying agent, stir and at 105 DEG C of-110 DEG C of insulation reaction 1.5h;
(5) be cooled to 70 DEG C-80 DEG C, add residue organic solvent, cooling discharging after stirring 20min.
2. 1 kinds of mono-composition poyurethane water-proof paints of embodiment, comprise the component of following weight part: 300 parts, the mixture that polyoxypropyleneglycol (N-220) and polyoxytrimethylene triol (N-330) mix according to the ratio of 10:1, TDI200 part, 100 parts of organic solvents, 400 parts of fillers, 50 parts of defoamers, 250 parts, softening agent, 80 parts of dispersion agents, 10 parts of catalyzer.
Preparation method is identical with embodiment 1.
3. 1 kinds of mono-composition poyurethane water-proof paints of embodiment, comprise the component of following weight part: 250 parts, the mixture that polyoxypropyleneglycol (N-220) and polyoxytrimethylene triol (N-330) mix according to the ratio of 9:1, TDI150 part, 70 parts of organic solvents, 300 parts of fillers, 40 parts of defoamers, 230 parts, softening agent, 60 parts of dispersion agents, 8 parts of catalyzer.
Preparation method is identical with embodiment 1.
4. 1 kinds of mono-composition poyurethane water-proof paints of embodiment, comprise the component of following weight part: 210 parts, the mixture that polyoxypropyleneglycol (N-220) and polyoxytrimethylene triol (N-330) mix according to the ratio of 8:1, TDI160 part, 80 parts of organic solvents, 400 parts of fillers, 50 parts of defoamers, 210 parts, softening agent, 70 parts of dispersion agents, 9 parts of catalyzer, 30 parts, solidifying agent.
Preparation method is identical with embodiment 1.
5. 1 kinds of mono-composition poyurethane water-proof paints of embodiment, comprise the component of following weight part: 220 parts, the mixture that polyoxypropyleneglycol (N-220) and polyoxytrimethylene triol (N-330) mix according to the ratio of 9:1, TDI170 part, 90 parts of organic solvents, 300 parts of fillers, 40 parts of defoamers, 240 parts, softening agent, 90 parts of dispersion agents, 9 parts of catalyzer, 30 parts, solidifying agent, 40 parts of pigment.
Preparation method is identical with embodiment 1.
6. 1 kinds of mono-composition poyurethane water-proof paints of embodiment, comprise the component of following weight part: 3000 parts, the mixture that polyoxypropyleneglycol (N-220) and polyoxytrimethylene triol (N-330) mix according to the ratio of 10:1, TDI200 part, 80 parts of organic solvents, 300 parts of fillers, 40 parts of defoamers, 240 parts, softening agent, 90 parts of dispersion agents, 9 parts of catalyzer, 30 parts of pigment.
Preparation method is identical with embodiment 1.
Claims (10)
1. a mono-composition poyurethane water-proof paint, it is characterized in that, comprise the component of following weight part: polyether glycol 200-300 part, toluene-2,4-diisocyanate 100-200 part, organic solvent 60-100 part, filler 240-400 part, defoamer 30-50 part, softening agent 200-250 part, dispersion agent 50-80 part, catalyzer 5-10 part.
2. mono-composition poyurethane water-proof paint as claimed in claim 1, is characterized in that, described polyether glycol is the mixture that polyoxypropyleneglycol and polyoxytrimethylene triol mix according to 8:1-10:1 ratio.
3. mono-composition poyurethane water-proof paint as claimed in claim 1, is characterized in that, described toluene-2,4-diisocyanate is containing 2,4 toluene-2,4-diisocyanates and 2,6 two kinds of toluene-2,4-diisocyanates isomer, adopt 80/20 isomery to be compared to raw material, and its ratio control is in 8%.
4. mono-composition poyurethane water-proof paint as claimed in claim 1, is characterized in that, described organic solvent is the mixture that one or more arbitrary proportions in toluene, dimethylbenzene, acetone mix.
5. mono-composition poyurethane water-proof paint as claimed in claim 1, it is characterized in that, described filler is the mixture that one or more arbitrary proportions in granularity 600～800 object light calcium carbonates, water-ground limestone, talcum powder, kaolin, silica powder mix.
6. mono-composition poyurethane water-proof paint as claimed in claim 1, is characterized in that, described catalyzer is the mixture that any one or the two or more arbitrary proportion in stannous octoate, dibutyl tin laurate, diacetate dibutyl tin mixes.
7. mono-composition poyurethane water-proof paint as claimed in claim 1, is characterized in that, described defoamer is silicone antifoam agent.
8. mono-composition poyurethane water-proof paint as claimed in claim 1, is characterized in that, can also comprise solidifying agent 10-50 part, described solidifying agent Wei oxazolidine latent curing agent.
9. mono-composition poyurethane water-proof paint as claimed in claim 1, is characterized in that, can also comprise pigment 30-50 part, and described pigment is any one in ferric oxide, chromoxide green, lemon yellow, medium chrome yellow medium yellow, zinc sulfide white, ultramarine, pthalocyanine blue, carbon black.
10. described in claim 1, the preparation method of mono-composition poyurethane water-proof paint is:
(1) polyether glycol is added to stir post-heating to 75 DEG C-80 DEG C of softening agent, dispersion agent;
(2) slowly add filler, pigment, be warming up to 115 DEG C-120 DEG C after stirring, 2.5h dewaters under vacuum-0.08MPa--0.09MPa condition;
(3) after dehydration, add 2/3 organic solvent while cooling to 75 DEG C-80 DEG C, then add TDI stirring reaction 2-2.5h at normal pressure and 80 DEG C of-85 DEG C of temperature;
(4) add again catalyzer, defoamer, solidifying agent, stir and at 105 DEG C of-110 DEG C of insulation reaction 1.5h;
(5) be cooled to 70 DEG C-80 DEG C, add residue organic solvent, cooling discharging after stirring 20min.
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| 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 |
| CN105153920A (en) * | 2015-08-18 | 2015-12-16 | 北京东方雨虹防水技术股份有限公司 | Water-proof one-component polyurethane coating and preparation method thereof |
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| CN105950829A (en) * | 2016-05-25 | 2016-09-21 | 江苏省沙钢钢铁研究院有限公司 | Antimony wire for RH refining and adding method thereof |
| CN106189798A (en) * | 2016-08-15 | 2016-12-07 | 江苏凯伦建材股份有限公司 | A kind of one-component thickness spraying anti-sag polyurethane water-proof paint and preparation method thereof |
| CN106519951A (en) * | 2016-11-16 | 2017-03-22 | 国网上海市电力公司 | Waterproof paint for transformer substation and preparation method thereof |
| CN107163825A (en) * | 2017-06-28 | 2017-09-15 | 山东诺威新材料有限公司 | Environment-friendly flame retardant type water-repellent paint 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 |
| CN107903798A (en) * | 2017-11-25 | 2018-04-13 | 长沙秋点兵信息科技有限公司 | Preparation method of polyurethane waterproof coating |
| CN108299619A (en) * | 2018-01-19 | 2018-07-20 | 河南建筑职业技术学院 | A kind of coupling agent modified coal ash for manufacturing for one-can urethane coating method |
| CN109679053A (en) * | 2018-12-19 | 2019-04-26 | 山东一诺威聚氨酯股份有限公司 | Monocomponent moisture cure railway waterproof polyurethane elastomer and preparation method thereof |
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| CN113444440A (en) * | 2021-07-22 | 2021-09-28 | 福建省三棵树新材料有限公司 | Single-component polyurethane waterproof coating and preparation method thereof |
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