Summary of the invention
The problem that the present invention solves is to provide a kind of waterproof paint, and the weathering resistance of this waterproof paint is strong, the waterproof layer that spraying forms can long-term exposure in outdoor.
The present invention provides the preparation method of this waterproof paint simultaneously.
In order to solve the problems of the technologies described above, technical scheme of the present invention is:
A kind of waterproof paint comprises A component and B component;
Comprise in the A component and have following component in percentage by weight:
Methyl-methacrylate resin: 35%~55%
Photosensitizers: 0.5%~1.5%
Promotor: 2%~4.5%
Butyl methacrylate: 18%~35%
Butyl acrylate: 3%~9%
Silicon powder: 15%~35%;
Comprise in the B component and have following component in percentage by weight:
Methyl-methacrylate resin: 25%~45%
Photostabilizer: 0.7%~2%
Initiator: 3%~5%
Butyl methacrylate: 20%~45%
Butyl acrylate: 5%~15%
Silicon powder: 10%~30%
Paraffin: 0.4%~1.2%;
The weight ratio of described A component and B component is 1: 1~1: 1.5.
As preferably, the weight percent of the methyl-methacrylate resin in the described A component is 40%~50%.
As preferably, the weight percent of the butyl methacrylate in the described A component is 20%~30%.
As preferably, the weight percent of the silicon powder in the described A component is 20%~30%.
As preferably, the weight percent of the methyl-methacrylate resin in the described B component is 30%~40%.
As preferably, the weight percent of the butyl methacrylate in the described B component is 25%~40%.
As preferably, the weight percent of the silicon powder in the described B component is 15%~25%.
As preferably, described photosensitizers is one or more in diazonium class, st-yrax ethers and the aromatic series ketone photosensitizers.
As preferably, described promotor is silane coupling agent class promotor.
As preferably, described photostabilizer is one or more in benzophenone, benzotriazole category, the hindered amine light stabilizer.
As preferably, described initiator is one or both in peroxide initiator and the azo-compound initiator.
As preferably, the particle diameter of the silicon powder in described A component and the B component is 900 orders~1200 orders.
The preparation method of described waterproof paint comprises:
Methyl-methacrylate resin in the A component, butyl methacrylate, butyl acrylate and silicon powder are mixed in proportion; Mixture is ground; Add photosensitizers and promotor in the mixture after grinding;
Methyl-methacrylate resin in the B component, butyl methacrylate, butyl acrylate and silicon powder are mixed in proportion; Mixture is ground; Add photostabilizer, initiator and paraffin in the mixture after grinding.
As preferably, when preparation A component and preparation B component, described mixture is ground to mixture being ground to 140 μ m~160 μ m.
Waterproof paint provided by the invention is a bi-component methyl methacrylate resin waterproof paint, when the construction spraying, two component generation Raolical polymerizables form waterproof layer, the waterproof layer that forms is strong to matrix adhesive force, snappiness good, intensity is high, have good thermostability, simultaneously can long-term exposure in outdoor, weathering resistance is strong, water resistance is good, is specially adapted to the concrete bridge beam bridge floor of inter-city rail transit, Line for Passenger Transportation, motorway.
Embodiment
In order further to understand the present invention, below in conjunction with embodiment the preferred embodiment of the invention is described, but should be appreciated that these describe just to further specifying the features and advantages of the present invention, rather than to the restriction of claim of the present invention.
Waterproof paint of the present invention comprises A component and B component, comprise in the A component and have following component in percentage by weight: 35%~55% methyl-methacrylate resin, 0.5%~1.5% photosensitizers, 2%~4.5% promotor, 18%~35% butyl methacrylate, 3%~9% butyl acrylate, 15%~35% silicon powder; Comprise in the B component and have following component in percentage by weight: 25%~45% methyl-methacrylate resin, 0.7%~2% photostabilizer, 3%~5% initiator, 20%~45% butyl methacrylate, 5%~15% butyl acrylate, 10%~30% silicon powder, 0.4%~1.2% paraffin.Wherein the weight ratio of A component and B component is 1: 1~1: 1.5.
Methyl-methacrylate resin is the main component of waterproof paint, is a kind of hardened resin, and second-order transition temperature is higher.To be superpolymer change the temperature of vitreous state into by elastomeric state to second-order transition temperature, all influential to hardness, snappiness, the sticking power of coating.The second-order transition temperature of methyl-methacrylate resin is higher, higher hardness and tensile strength are arranged, its adding can improve hardness, wear resistance, water tolerance, tensile strength and the transparency of coating, it is a hydrophilic monomer, the introducing of polar group can make to have polar group on the polymer lateral chain, and this will increase the sticking power between coating and the base material, can cause the water-resistant coating made and erosion resistance to descend at most if content is crossed, content crosses that mechanical stability is bad at least.In the A component, the weight percent of methyl-methacrylate resin is preferably 40%~50%.
Behind the sensitiser absorption UV-light luminous energy, at first fission and become to have the free radical of reactive behavior, it is to photaesthesia and to thermally-stabilised, and the free radical that this reactive behavior is very big can be attacked the unsaturated double-bond structure and cause Raolical polymerizable, finishes the curing of coating at short notice.Photosensitizers is preferably one or more in diazonium class, st-yrax ethers and the aromatic series ketone photosensitizers among the present invention.
Promotor can be improved speed of reaction, promotes decomposition of initiator.Promotor is preferably silane coupling agent class promotor among the present invention.
Use butyl methacrylate and butyl acrylate viscosity in the A component as solvent adjustment coating.Butyl methacrylate can improve sticking power, the photostabilization of coating to matrix.The weight percent of butyl methacrylate is preferably 20%~30% among the present invention.
Butyl acrylate belongs to soft monomer, and soft monomer is meant the monomer that the homopolymer second-order transition temperature is lower, can give resin certain snappiness when participating in the resin copolymerization.Therefore, butyl acrylate adds the snappiness and the film-forming properties that can improve the coating that coating forms in the coating on matrix.
Silicon powder is processed through ultra-fine grinding process flow process by pure silica powder, particle is thin, suspension property is good, in coating system, have good suspension, dispersiveness, stability and prevent the performance of sagging, can effectively improve performances such as the erosion resistance of filming, wear resistance, water tolerance, insulativity, high temperature resistant, compactness, can also effectively reduce the cost of coating when improving coating property, be a kind of ideal filler.Preferable particle size of the present invention is 900 orders~1200 purpose silicon powders, and the weight percent of silicon powder is preferably 20%~30%.
In the B component, contain methyl-methacrylate resin, butyl methacrylate, butyl acrylate and silicon powder equally.As preferably, the weight percent of methyl-methacrylate resin is 30%~40%, and the weight percent of butyl methacrylate is 25%~40%, and the weight percent of silicon powder is 15%~25%.
Also contain photostabilizer, initiator and paraffin in the B component in addition.
Add photostabilizer and can keep the stable of coating, it is aging to prevent that coating from decomposing.Coating can cause autoxidation because of absorbing ultraviolet ray under dayligth effect, cause polymer degradation, makes the mechanical property of the waterproof layer that coating forms worsen.Photostabilizer can effectively absorb ultraviolet ray or have the ability of catching the free radical that produces because of photoxidation, can stop and cause waterproof layer aged free radical reaction, suppress photoxidation, prevent that waterproof layer is subjected to ultraviolet ray and destroys, and light stability of self and Heat stability is good.Among the present invention in the preferred benzophenone of stablizer, benzotriazole category, the hindered amine light stabilizer one or more.
Initiator can cause the monomer activation and produce free radical, can cause Raolical polymerizable in polyreaction.Initiator is preferably one or both in peroxide initiator and the azo-compound initiator among the present invention.Initiator and promotor must be used and could obtain the ideal effect, and the two can not directly mix at ordinary times, otherwise Raolical polymerizable is under the acting in conjunction of promotor and initiator, and speed of response is very fast, 2~3 hours will complete reaction, and waterproof paint just can solidify.Therefore initiator and promotor will separately be deposited, and mix with other composition respectively and are divided into A component and B component.The shelf lives of waterproof paint generally can reach 12 months like this, when construction is used, just A component and B component is mixed.
Paraffin has hydrophobicity, adds the surface that paraffin can seal waterproof layer, make waterproof layer do not get wet, waterproof, and have the polluting proofing property energy.
The preparation method of waterproof paint of the present invention:
1) methyl-methacrylate resin, butyl methacrylate, butyl acrylate and silicon powder are dropped in the dispersion tank according to the ratio in the A component, mix by high-speed stirring; Grind with sand mill then, preferably be ground to 140 μ m~160 μ m; Add photosensitizers and the promotor that meets ratio in the A component in the mixture after grinding, promptly make the A component after being uniformly dispersed.
2) methyl-methacrylate resin, butyl methacrylate, butyl acrylate and silicon powder are dropped in the dispersion tank according to the ratio in the B component, mix by high-speed stirring; Grind with skin grinder then, preferably be ground to 140 μ m~160 μ m; Add photostabilizer, initiator and the paraffin that meets ratio in the B component in the mixture after grinding, promptly make the B component after being uniformly dispersed.
When constructing at the scene, with A component and B component according to weight ratio be mixed in 1: 1~1: 1.5 after, adopt the two component spray machine to carry out spraying application.The A component is with after the B component mixes, and promotor and initiator meet, and Raolical polymerizable is initiated, complete reaction in 2h~3h, and waterproof paint is applied to after fixing on the matrix, forms one deck waterproof layer.
Waterproof paint provided by the invention is sprayed at the waterproof layer that forms behind the building surface and has favorable waterproof property and weathering resistance, can long-term exposure in outdoor, concrete composition is with reference to following embodiment.
Embodiment 1:
1) preparation A component takes by weighing
The methyl-methacrylate resin 215Kg of Heilongjiang Longxin Chemical Co., Ltd., the butyl methacrylate 100Kg of Tianjin section close europeanized reagent development centre, the butyl acrylate 25Kg of Zhejiang sunrise Fine Chemical Co., Ltd, the silicon powder 125Kg of Fujian Sanxiang Advanced Materials Co., Ltd., above material is dropped in the dispersion tank, and high-speed stirring mixes;
Be ground to about 150 μ m with sand mill then;
Take by weighing the Linqu rainbow and beautify the diazonium photosensitizers 3Kg of worker company limited, the silane resin acceptor kh-550 of 15Kg Jiangsu Chenguang Coincident Dose Co., Ltd. adds in the mixture after grinding and is uniformly dispersed.
2) preparation B component, take by weighing butyl methacrylate 150Kg, the butyl acrylate 50Kg of Zhejiang sunrise Fine Chemical Co., Ltd, the silicon powder 100Kg of Fujian Sanxiang Advanced Materials Co., Ltd. of methyl-methacrylate resin 180Kg, the Tianjin section close europeanized reagent development centre of Heilongjiang Longxin Chemical Co., Ltd., above material is dropped in the dispersion tank, and high-speed stirring mixes;
Be ground to about 150 μ m with skin grinder then;
Take by weighing the Octabenzone 5Kg of sky, Beijing skill Development Co., Ltd of permanent Rehabilitation, Changshu City is preced with the dibenzoyl peroxide 15Kg of modern chemical industry company limited, the paraffin 2.5Kg of Hangzhou industrial chemicals company limited is uniformly dispersed in the mixture after adding is ground.
Embodiment 2:
Preparation method with embodiment 1 is identical, and the A component comprises:
The methyl-methacrylate resin 250Kg of Heilongjiang Longxin Chemical Co., Ltd.,
The butyl methacrylate 120Kg of Tianjin section close europeanized reagent development centre,
The butyl acrylate 20Kg of Zhejiang sunrise Fine Chemical Co., Ltd,
The silicon powder 150Kg of Fujian Sanxiang Advanced Materials Co., Ltd.,
The benzophenone 3.5Kg of Jiangsu magnificent forever fine chemicals company limited,
The silane coupling agent KH-560 of 20Kg Jiangsu Chenguang Coincident Dose Co., Ltd..
The B component comprises:
The methyl-methacrylate resin 165Kg of Heilongjiang Longxin Chemical Co., Ltd.,
The butyl methacrylate 165Kg of Tianjin section close europeanized reagent development centre,
The butyl acrylate 40Kg of Zhejiang sunrise Fine Chemical Co., Ltd,
The silicon powder 150Kg of Fujian Sanxiang Advanced Materials Co., Ltd.,
The 2-of Nanjing Jia Yin Be Able LLC (2H-benzotriazole-2-yl)-4-(1,1,3, the 3-tetramethyl butyl) phenol 6Kg,
Hubei becomes the Diisopropyl azodicarboxylate 20Kg of space pharmaceutical Co. Ltd,
The paraffin 3.5Kg of Hangzhou industrial chemicals company limited.
Embodiment 3:
Preparation method with embodiment 1 is identical, and the A component comprises:
The methyl-methacrylate resin 275Kg of Heilongjiang Longxin Chemical Co., Ltd.,
The butyl methacrylate 120Kg of Tianjin section close europeanized reagent development centre,
The butyl acrylate 30Kg of Zhejiang sunrise Fine Chemical Co., Ltd,
The silicon powder 125Kg of Fujian Sanxiang Advanced Materials Co., Ltd.,
The st-yrax dme 2.5Kg of the big bright Industrial Co., Ltd. in Jiaxing,
The silane coupling agent KH-570 of 13Kg Jiangsu Chenguang Coincident Dose Co., Ltd..
The B component comprises:
The methyl-methacrylate resin 190Kg of Heilongjiang Longxin Chemical Co., Ltd.,
The butyl methacrylate 150Kg of Tianjin section close europeanized reagent development centre,
The butyl acrylate 60Kg of Zhejiang sunrise Fine Chemical Co., Ltd,
The silicon powder 110Kg of Fujian Sanxiang Advanced Materials Co., Ltd.,
The photostabilizer 944 of plasticizing auxiliary reagent factory, 6Kg Wenzhou,
Changshu City is preced with the dibenzoyl peroxide 18Kg of modern chemical industry company limited,
The paraffin 2.5Kg of Hangzhou industrial chemicals company limited.
Embodiment 4:
Preparation method with embodiment 1 is identical, and the A component comprises:
The methyl-methacrylate resin 280Kg of Heilongjiang Longxin Chemical Co., Ltd.,
The butyl methacrylate 115Kg of Tianjin section close europeanized reagent development centre,
The butyl acrylate 34Kg of Zhejiang sunrise Fine Chemical Co., Ltd,
The silicon powder 145Kg of Fujian Sanxiang Advanced Materials Co., Ltd.,
The Linqu rainbow beautifies the diazonium photosensitizers 4.8Kg of worker company limited,
The silane coupling agent DL-151 of 16Kg Jiangsu Chenguang Coincident Dose Co., Ltd..
The B component comprises:
The methyl-methacrylate resin 170Kg of Heilongjiang Longxin Chemical Co., Ltd.,
The butyl methacrylate 175Kg of Tianjin section close europeanized reagent development centre,
The butyl acrylate 72Kg of Zhejiang sunrise Fine Chemical Co., Ltd,
The silicon powder 130Kg of Fujian Sanxiang Advanced Materials Co., Ltd.,
The Octabenzone 6Kg of sky, Beijing skill Development Co., Ltd of permanent Rehabilitation
Hubei becomes the Diisopropyl azodicarboxylate 19Kg of space pharmaceutical Co. Ltd,
The paraffin 2.5Kg of Hangzhou industrial chemicals company limited.
Comparative Examples 1:
Polyurethane water-proof paint.
Comparative Examples 2:
Polyureas body waterproof paint.
Respectively the waterproof paint of each embodiment and Comparative Examples is carried out the test of the key technical indexes, testing method is conventionally known to one of skill in the art, and experimental result sees Table 1:
Table 1 waterproof paint The performance test results
Waterproof paint |
Tensile strength (MPa) |
Elongation at break (%) |
Low-temperature bending (≤-35 ℃) |
Watertightness |
80 ℃, 1000h heat aging, stretching strength retentivity (%) |
1000h ultraviolet ray heat aging, stretching strength retentivity (%) |
Embodiment 1 |
12.3 |
155 |
Flawless |
0.5MPa, 24 h are waterproof |
95 |
92 |
Embodiment 2 |
11.7 |
160 |
Flawless |
0.5MPa, 24 h are waterproof |
95 |
90 |
Embodiment 3 |
13.4 |
150 |
Flawless |
0.5MPa, 24 h are waterproof |
96 |
93 |
Embodiment 4 |
13.8 |
137 |
Flawless |
0.5MPa, 24 h are waterproof |
98 |
93 |
Comparative Examples 1 |
6.0 |
450 |
Crackle is arranged |
0.4MPa, 2h is waterproof |
60 |
50 |
Comparative Examples 2 |
16.0 |
450 |
Crackle is arranged |
0.4MPa, 2h is waterproof |
55 |
46 |
Embodiment 1-4 is a waterproof paint provided by the invention, by table 1 result as can be seen, waterproof paint of the present invention not only tensile strength, elongation at break meets the requirements, and good, the anti-heat aging of low-temperature bending, good waterproof performance, over-all properties is better, can be used for outdoor for a long time.Comparative Examples 1,2 is existing two kinds of waterproof paints commonly used, though tensile strength and elongation at break meet the requirements, low-temperature bending, ageing resistance are bad, water resistance is not as the waterproof paint that embodiment 1-4 provides, and can not satisfy the each side requirement simultaneously.
Therefore waterproof paint weathering resistance provided by the invention is strong, water resistance good, the waterproof layer that spraying forms can long-term exposure in outdoor.
More than waterproof paint provided by the present invention and preparation method thereof is described in detail.Used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.