CN103224742B - A kind of Penetration type transparent concrete protection paint and preparation method thereof - Google Patents
A kind of Penetration type transparent concrete protection paint and preparation method thereof Download PDFInfo
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- CN103224742B CN103224742B CN201310145360.6A CN201310145360A CN103224742B CN 103224742 B CN103224742 B CN 103224742B CN 201310145360 A CN201310145360 A CN 201310145360A CN 103224742 B CN103224742 B CN 103224742B
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Abstract
The present invention relates to a kind of Penetration type transparent concrete protection paint and preparation method thereof, by being diluted by fluorocarbon polymer thinner, then add solidifying agent, as the first component after mixing, and then the silane added as second component, mix; Be coated in concrete surface can penetrate into its inside and be combined as a whole with it, form the protection of deep layer, can effectively reduce concrete water-intake rate, add concrete surface degree of compactness, resistance to chemical corrosion, anti-carbonation properties, frost resistance all have raising in various degree, particularly block the passage that outside moisture enters inside concrete, concrete water-proof performance is promoted greatly, effectively extend its Years Of Service.
Description
Technical field
The present invention relates to a kind of Penetration type transparent concrete protection paint and preparation method thereof, belong to concrete surface protective coating field.
Background technology
Concrete is man-made structures's structured material that application is maximum, use range is the widest at present.Along with modern economy and the fast development of science and technology, concrete range of needs is enlarged in harbour, highway, bridge, the construction of municipal modernization project.In general, concrete structure has good long-term behaviour and high-durability.But concrete service ability and time can be subject to the restriction of various envrionment conditions, in practical engineering application, the physics of concrete structure often because structure design is unreasonable, under constructional deficiency, various envrionment conditions, the reason such as chemistry or biological attack and occur in-service deterioration, have even do not reach predicted life and destroy.
Therefore, take effective guard technology to prevent concrete environmental attack, to safeguard concrete use properties, to ensureing and improving the weather resistance of concrete structure and have important practical significance work-ing life.Promote the common method of concrete durability except concrete self-protection technology, surfacecti proteon shows excellent barrier propterty owing to preventing hazardous medium from entering inside concrete from source, causes attention and the concern of people gradually.This is not only and ensures the security of buildings in length of life, and also can greatly reduce the consumption to natural resources and the energy, also meets the strategy of sustainable development of concrete industry.Therefore, research one can provide concrete and adequately protect to ensure its structural safety, and promote its weather resistance, the concrete surface protective coating of the reenlist time limit has important innovative significance and practical value very much simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of Penetration type transparent concrete protection paint and preparation method thereof, by fluorocarbon polymer thinner is diluted, then add solidifying agent to mix as the first component, and then the silane mixture added as second component evenly obtains.
The present invention is achieved by the following technical solutions:
A kind of Penetration type transparent concrete protection paint, is made up of the component of following weight percentage:
Fluorocarbon polymer 40 ~ 50%;
Solidifying agent 6 ~ 20%;
Thinner 30 ~ 45%;
Silane 8 ~ 10%.
Wherein,
Described fluorocarbon polymer is one or more in polytetrafluoroethylene (PTFE), polyvinylidene difluoride (PVDF) (PVDF), fluorinated ethylene propylene (PVF), poly-fluoroolefin-vinyl ether (FEVE).
Described solidifying agent is one or more in isocyanic ester, trimerization isocyanide acid amides, isocyanuric acid ester.
Described thinner is one or more in N-BUTYL ACETATE, dimethylbenzene, toluene, acetone.
Described silane is one or more in isobutyl-silane, isooctylsilane, methyl dimethoxysilane.
Coating of the present invention is the transparent viscous liquid of state in a reservoir, and coated side is smooth colourless, does not affect the appearance features of concrete itself; Because it contains fluorocarbon polymer composition, thus there is good endurance quality, the small molecule structure of silane can make the present invention after being used in concrete, penetrate into its inside simultaneously, effectively prevents infiltration and the transfer of moisture, is promoting the performance having in concrete water-proof effect and give prominence to very much.
The present invention further provides the preparation method of described a kind of Penetration type transparent concrete protection paint, specifically comprise the following steps:
(1) each component materials is taken by proportioning;
(2) first with thinner, fluorocarbon polymer is diluted;
(3) add solidifying agent, stir 20-30 minute;
(4) add silane again, stir and mix for 10-15 minute, namely obtain described a kind of Penetration type transparent concrete protection paint.
Wherein, the mechanism that fluorocarbon polymer plays a role in the present invention is: with poly-fluoroolefin-vinyl ether (FEVE) (accompanying drawing 1), FEVE consist of a number (vinyl fluoride unit, alkyl vinyl ether/ester units etc.), interaction again while that each unit being separate, for concrete surface provides excellent protection.Wherein, F-C key bond energy is very big, and ultraviolet is difficult to dissociation; F atom electronegativity is very big, and atomic radius is large compared with H atom again, causes repulsion between the atom of non-Cheng Jian large, C-C major key is made to be formed a kind of spirane structure, F atom in carbochain can close contact mutually, C-C main chain is covered into a complete right cylinder, shields and protect it; In figure, vinyl fluoride unit and vinyl ether units alternating copolymerization combine, and constitutionally stable fluorine cell protection vinyl units stable not, weathering resistance is ensured.
The protective mechanism of silane, for n-octyl silane (see accompanying drawing 2), alkoxy-functional in silane is under the effect of water and concrete alkali catalysis, there is hydrolysis reaction and obtain silicone hydroxyl, between silicone hydroxyl, condensation reaction can be there is further between the hydroxyl existed in silicone hydroxyl and concrete, form stable silica chemistry of silicones key, by these chemical bonds, silane molecule can firmly be attached in concrete surface and capillary channel, and the n-octyl part having neither part nor lot in reaction before belongs to hydrophobic group, they are arranged in concrete surface and capillary channel as strutted countless umbellules, concrete surface is become hydrophobic type from hydrophilic, thus stop that the harmful ion that moisture and moisture carry etc. infiltrates inside concrete, again because silane protection does not have closed concrete capillary channel, do not hinder steam diffusion from inside to outside while waterproof, ensure that good permeability.
The using method of described a kind of Penetration type transparent concrete protection paint is as follows:
(1) should ensure that coated side is clean before brushing, there is no disintegrating slag or more than foreign material;
(2) ensure that brushing evenly, make be coated with surperficial saturated and start overflow, repeat brushing, keep coated surface at least 5 seconds " looking it is wet ";
(3) observe coated surface surface and whether reach dry face state (surface without overflow and touch do not glue), the words being can carry out lower one deck brushing.
Technique effect of the present invention and advantage are:
(1) after the process of this protective coating, add concrete surface degree of compactness, resistance to chemical corrosion, anti-carbonation properties, frost resistance all have raising in various degree, particularly block the passage that outside moisture enters inside concrete, concrete water-proof performance is promoted greatly, effectively extends its Years Of Service;
(2) the present invention is permeable type protective coating, is coated in concrete surface and can penetrates into its inside and be combined as a whole with it, forms the protection of deep layer;
(3), after the present invention is coated in concrete surface complete drying, cohesive strength is very considerable, and coating not easily comes off from concrete surface, and protective effect is lasting;
(4) after the present invention is used in concrete, the smooth transparent look of facing, can not affect the apparent form of concrete itself, as needed also can to add different pigment to reach effect attractive in appearance;
(5) this protective coating is easy to use, can spray, brushes and roller application at concrete surface.
Accompanying drawing explanation
Fig. 1 gathers fluoroolefin-vinyl ether (FEVE) schematic arrangement
X=F, Cl; R1, R2=alkyl; R3, R4=alkylidene group
Fig. 2 n-octyl silane molecule structural representation
Embodiment
Below by way of specific specific examples, technical scheme of the present invention is described.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.
Embodiment 1-2
Prepare a kind of Thief zone weather-resisting transparent concrete protection coating, formula following (counting by weight):
Table 1 embodiment 1-2 fills a prescription
| Embodiment | 1 | 2 |
| FEVE/ part | 45 | 45 |
| Isocyanuric acid ester/part | 7 | 20 |
| N-BUTYL ACETATE/part | 35 | 35 |
| Methyl dimethoxysilane/part | 9 | 9 |
Preparation method's process is:
(1) each component materials is taken by proportioning;
(2) first with N-BUTYL ACETATE, FEVE is diluted;
(3) add isocyanuric acid ester, stir 20 minutes;
(4) add methyl dimethoxysilane again, stir and mix for 10 minutes, namely obtain described concrete protection coating.
Obtained protective coating is coated on C20 concrete, and with the C20 concrete sample of uncoated protective coating as blank, the performance test results is as follows:
Table 2 embodiment 1-2 barrier propterty
| Embodiment | Water-intake rate/mmmin -1/2 | Depth of penetration/mm |
| 1 | 0.0039 | 1.18 |
| 2 | 0.0023 | 1.20 |
| Blank | 0.1757 | / |
Gained coating is the transparent viscous liquid of state in a reservoir, and again because it has Thief zone type energy, until coating after concrete test block surface is done solid work, coated side is smooth colourless, does not affect the appearance features of concrete itself.
After testing by the proportioning of embodiment 1-2, test block water-intake rate all declines to a great extent compared with check sample, illustrate that this coating really can provide effective protection for concrete in water resistance, and for the lower C20 test block of intensity, when solidifying agent usage quantity is more, coating protecting effect is more obvious; The depth of penetration difference of embodiment 1-2 is little, be because the two silane volume is identical, and the small molecule structure of this index of depth of penetration and silane has direct relation.
Embodiment 3
Prepare a kind of Thief zone weather-resisting transparent concrete protection coating, formula following (counting by weight):
PVDF 50
Trimerization isocyanide acid amides 7
Dimethylbenzene 40
Isobutyl-silane 10
Preparation method's process is:
(1) each component materials is taken by proportioning;
(2) first with dimethylbenzene, PVDF is diluted;
(3) add trimerization isocyanide acid amides, stir 20 minutes;
(4) add isobutyl-silane again, stir and mix for 10 minutes, namely obtain described concrete protection coating.
After this coating process, concrete (C50) performance is as follows:
Table 3 embodiment 3 barrier propterty
| Embodiment | Water-intake rate/mmmin -1/2 | Depth of penetration/mm |
| 3 | 0.0017 | 0.86 |
| Blank (C50) | 0.0073 | / |
Gained coating is the transparent viscous liquid of state in a reservoir, and again because it has Thief zone type energy, until coating after concrete test block surface is done solid work, coated side is smooth colourless, does not affect the appearance features of concrete itself.
The degree of compactness of C50 test block own is higher, but after applying the obtained protective coating of embodiment 3, still has and decline to a great extent, illustrate that this protective coating also can provide good protection for the concrete of high strength compared with the water-intake rate of check sample.
Embodiment 4
Prepare a kind of Thief zone weather-resisting transparent concrete protection coating, formula following (counting by weight):
FEVE 40
Trimerization isocyanide acid amides 7
N-BUTYL ACETATE 30
Isobutyl-silane 4
Methyl dimethoxysilane 4
Preparation method's process is:
(1) each component materials is taken by proportioning;
(2) first with N-BUTYL ACETATE, FEVE is diluted;
(3) add trimerization isocyanide acid amides, stir 20 minutes;
(4) add isobutyl-silane and methyl dimethoxysilane again, stir and mix for 15 minutes, namely obtain described concrete protection coating.
After this coating process, concrete (C20) performance is as follows:
Table 4 embodiment 4 coating protecting performance
Experiment is carried out known according to the proportioning of embodiment 4, before natron, the sample water-intake rate of blank group is much larger than embodiment 4, illustrate that this coating can provide effective protection for concrete in water resistance, and after natron in embodiment 4 ascensional range of test block water-intake rate be less than blank group, still maintain very low Water absorption values, illustrate that the concrete after this protective coating of coating is not easy to suffer the erosion of extraneous chemical substance.
Embodiment 5
Prepare a kind of Thief zone weather-resisting transparent concrete protection coating, formula following (counting by weight):
FEVE 30
PTFE 20
Isocyanuric acid ester 7
N-BUTYL ACETATE 40
Isobutyl-silane 10
Preparation method's process is:
(1) each component materials is taken by proportioning;
(2) first mixed by FEVE and PTFE, rear N-BUTYL ACETATE dilutes the two mixture;
(3) add isocyanuric acid ester, stir 30 minutes;
(4) add isobutyl-silane again, stir and mix for 15 minutes, namely obtain described concrete protection coating.
After this coating process, concrete (C20) performance is as follows:
Table 5 embodiment 5 paint adhesion intensity
| Embodiment | Pulling force/N | Cohesive strength/MPa |
| 5 | 5636 | 2.25 |
Test according to the proportioning of embodiment 5, coating is the transparent viscous liquid of state in a reservoir, and until coating after concrete test block surface is done solid work, coated side is smooth colourless, does not affect the appearance features of concrete itself.As shown in table 5, embodiment 5 cohesive strength is 2.25MPa, illustrates that this coating is up to state standards with the cohesive strength of specimen surface.
Embodiment 6
Prepare a kind of Thief zone weather-resisting transparent concrete protection coating, formula following (counting by weight):
FEVE 50
Isocyanic ester 10
N-BUTYL ACETATE 40
Methyl dimethoxysilane 10
Preparation method's process is:
(5) each component materials is taken by proportioning;
(6) first with N-BUTYL ACETATE, FEVE is diluted;
(7) add isocyanic ester, stir 20 minutes;
(8) add methyl dimethoxysilane again, stir and mix for 15 minutes, namely obtain described concrete protection coating.
After this coating process, concrete (C20) performance is as follows:
Table 6 embodiment 6 coating protecting performance
| Embodiment | 3d ultimate compression strength/MPa | 7d ultimate compression strength/MPa | 28d ultimate compression strength/MPa |
| 6 | 13.78 | 15.62 | 24.31 |
| Blank (C20) | 6.22 | 12.76 | 19.26 |
Test according to the proportioning of embodiment 6, the different larval instar ultimate compression strength of blank group sample and coating embodiment 6 sample is listed respectively in figure, when being in the identical length of time, sample ultimate compression strength is all higher than blank group, and 28d ultimate compression strength, the former exceeds the latter about 26%, illustrates that this coating improves the ultimate compression strength of sample to a certain extent.
Claims (3)
1. a Penetration type transparent concrete protection paint, is made up of the component of following weight percentage:
Described fluorocarbon polymer is one or more in tetrafluoroethylene, polyvinylidene difluoride (PVDF), fluorinated ethylene propylene, poly-fluoroolefin-vinyl ether; Described solidifying agent is one or both in isocyanic ester, trimerization isocyanide acid amides; Described thinner is one or more in N-BUTYL ACETATE, dimethylbenzene, toluene, acetone; Described silane is one or more in isobutyl-silane, isooctylsilane, methyl dimethoxysilane.
2. the preparation method of a kind of Penetration type transparent concrete protection paint as claimed in claim 1, specifically comprises the following steps:
(1) each component materials is taken by proportioning;
(2) first with thinner, fluorocarbon polymer is diluted;
(3) add solidifying agent, stir 20-30 minute;
(4) add silane again, stir and mix for 10-15 minute, namely obtain described a kind of Penetration type transparent concrete protection paint.
3. the purposes applied in concrete protection of a kind of Penetration type transparent concrete protection paint as claimed in claim 1.
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| CN201310145360.6A CN103224742B (en) | 2013-04-24 | 2013-04-24 | A kind of Penetration type transparent concrete protection paint and preparation method thereof |
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| CN103881572B (en) * | 2014-03-10 | 2016-04-20 | 戚城 | A kind of stone protectant and preparation method thereof |
| CN103979887B (en) * | 2014-04-28 | 2016-06-15 | 苏州第一建筑集团有限公司 | The anti-face checking coating of clear-water concrete and using method thereof |
| CN104311141B (en) * | 2014-09-24 | 2017-03-08 | 青岛佰众化工技术有限公司 | A kind of clear-water concrete protective agent and preparation method thereof |
| CN104628419B (en) * | 2015-02-12 | 2017-09-26 | 东南大学 | Carbonated concrete Re-boostering test surface coating and preparation and application |
| CN105601328A (en) * | 2015-12-21 | 2016-05-25 | 浙江大学自贡创新中心 | Method for enhancing hydrophobic property of foam concrete by using fluorocarbon resin emulsion |
| CN105601325A (en) * | 2015-12-25 | 2016-05-25 | 浙江大学自贡创新中心 | Method for enhancing performances of foam concrete by using PVDF (Polyvinylidene Fluoride) dispersion liquid |
| CN105713548A (en) * | 2016-02-06 | 2016-06-29 | 辽宁省水利水电科学研究院 | Permeation-type two-component water-based bonding agent and preparation method thereof |
| CN106046979B (en) * | 2016-06-28 | 2018-05-18 | 上海砼仁环保技术发展有限公司 | A kind of pervious concrete pavement noctilucence cover protective agent and the protectant road surface of cover containing noctilucence and construction method |
| CN106010186B (en) * | 2016-06-28 | 2018-05-22 | 上海砼仁环保技术发展有限公司 | A kind of pervious concrete pavement protective agent and preparation method thereof |
| CN106318187A (en) * | 2016-09-09 | 2017-01-11 | 河南省水利科学研究院 | Double-component polyurethane concrete surface protection material and preparation method thereof |
| CN107235748A (en) * | 2017-06-13 | 2017-10-10 | 广州珠江黄埔大桥建设有限公司 | A kind of method of body consolidation protection concrete in osmosis type epoxy resin |
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Family Cites Families (1)
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| JP2004300319A (en) * | 2003-03-31 | 2004-10-28 | Asahi Glass Co Ltd | Coating material composition and coated article |
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| CN101824253A (en) * | 2009-04-10 | 2010-09-08 | 北京航材百慕新材料技术工程股份公司 | High weatherability self-cleaning fluorocarbon coating |
| CN101898902A (en) * | 2009-05-31 | 2010-12-01 | 上海市涂料研究所 | Concrete penetrant capable of being directly applied to wet surface |
| CN101942250A (en) * | 2010-08-24 | 2011-01-12 | 上海雅达特种涂料有限公司 | Fluorocarbon coating |
Non-Patent Citations (1)
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