CN103601527B - A kind of silane paste protective agent and preparation method thereof - Google Patents
A kind of silane paste protective agent and preparation method thereof Download PDFInfo
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- CN103601527B CN103601527B CN201310638003.3A CN201310638003A CN103601527B CN 103601527 B CN103601527 B CN 103601527B CN 201310638003 A CN201310638003 A CN 201310638003A CN 103601527 B CN103601527 B CN 103601527B
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Abstract
The present invention relates to a kind of silane paste protective agent and preparation method thereof, with weight, the formula of described silane paste protective agent is as follows: silane monomer 65% ~ 85%; Emulsifying agent 3.0% ~ 5.0%; Thickening material 0.5% ~ 1.0%; Emulsion stabilizer 1.0% ~ 1.5%; Buffer reagent 0.1% ~ 1%; Deionized water 10% ~ 28%; Wherein: described silane monomer is one or more mixtures mixed with arbitrary proportion in alkylalkoxy silane; Described emulsifying agent is the combination of one or more in alkylphenol polyoxyethylene OP series, fatty alcohol-polyoxyethylene ether MOA series, paregal O S series, Tween serial, high fatty alcohol sulfuric ester, sulfonate emulsifier series; Described emulsion stabilizer is any one in spans, polyethylene glycol monolaurate class, polyethylene glycol stearate class, Vinlub class.Silane paste protective agent of the present invention has the advantages such as excellent perviousness, waterproof weather resistance, extended storage stability and fast rapid hardening pearl.
Description
Technical field
The invention belongs to building material technical field, be specifically related to a kind of silane paste protective agent for concrete surface water-tight corrosion-proof and preparation method thereof.
Background technology
The weather resistance of concrete structure, security and working life are the emphasis that people study always, in order to improve weather resistance, China has all dropped into a large amount of funds every year and has been used for repairing and reinforcing in Infrastructure corrosion, cause the reason of corrosion except salt environment widely, shoreline is very long, the local Road and Bridge in Winter in the north uses deicer salts in a large number, saltings environment is widely also had (mostly to be oil, Sweet natural gas and mineral wealth base), in addition, pollute, the country of the situation of acid rain also more some other advanced technology is serious, but even China compatriots are not enough for the understanding of corrosion, there are " acts and efforts for expediency " and be reluctant to take safeguard procedures in some, a lot of building does not reach and just occurs heavy corrosion life, one continues to use straight through maintenance and reinforcement, large-area corrosion and a large amount of maintenance costs cause great financial loss to country.For concrete structure particularly high performance for concrete structure, silane maintenance is a kind of main anti-corrosion measure, can effectively improve concrete weather resistance, can increase concrete structure work-ing life of 10 ~ 20 years.
But aqueous silicane product, in concrete surface steeping process, active ingredient easily runs off, and the time compole contacted with concrete surface is short, is difficult to reach effective infiltration, reach good effect and usually need very large consumption, easily cause Financial cost to rise, waste of material, and the construction of silane can be made convenient by lotion state, especially the construction of bottom surface and facade, the non-flowing feature of thixotropy lotion can ensure the maximum infiltration of silane activeconstituents especially.
Chinese patent CN10136760A describes a kind of silicone hydride cream-like substance with high solid content and preparation method thereof, its technical recipe is with the silane compound of different functional groups and carries out emulsification in a heated condition to obtain silane paste water-resisting agent, in formula, emulsifier content is up to 5%, the use of a large amount of emulsifying agent certainly will affect the hydrophobic of silane paste and water resistance, and this preparation method needs to heat material, causes energy consumption higher.
Chinese patent CN101746988A describes a kind of special silane paste protective agent for concrete and preparation method thereof, its technical recipe uses with the collocation of micromolecular long chain alkyl silane coupling agent, siloxane oligomer and organic solvent, silane paste water-proof protective agent is obtained by emulsification, with an organic solvent Huan Wanting Fang Xiangting sherwood oil and solvent wet goods in this preparation method, make this system inflammable and explosive, cause the pollution of environment, also bring very big hidden danger to construction application simultaneously.
Chinese patent CN1727432A describes a kind of waterproofing agent of organosilicon in paste form and manufacture method thereof, its preparation method uses the low-molecular-weight polydimethylsiloxane oligopolymer with active reaction end group, first dispersion treatment becomes pre-emulsion, add catalyzer again by the polyreaction of 15 ~ 22 hours, obtain waterproofing agent of organosilicon in paste form, this preparation method's complex process, long reaction time, what obtain is high molecular polymerization product, product viscosity is large, and the perviousness on concrete substrate and application property are all poor.
Chinese patent CN101734943A describes one and refuses oily hydrophobic permeable type fluorine containing silane protective cream and preparation method thereof, its technique is with fluorine containing silane coupling agent, long chain alkyl silane coupling agent, siloxane oligomer, organic solvent, emulsifying agent and deionized water are raw material, the lotion of thickness is obtained by stirring and emulsifying, this lotion has the feature of waterproof and oilproof, but provide in this formula in the raw material of surface hydrophobicity and also have the polymkeric substance such as methyl and phenyl hydrogen-containing silicon oil except low molecule silane, although lotion product surface waterproofing better performances therefore can be caused, but poor permeability on concrete substrate, the shortcoming of long durability deficiency, moreover use solvent in this preparation method, the pollution of environment can be caused, do not meet the requirement of environmental protection.
Chinese patent CN102676058A describes a kind of Water-dispersible type oligosiloxane paste and preparation method thereof, with alkyl group siloxane oligomer, function amino silicones and permeate agent compound, by a small amount of emulsifying agent, stirring and emulsifying is to realize siloxanes lotion under heating, and the lotion product of preparation has good waterproof protective effect.But this preparation method needs to heat material, energy consumption is comparatively large, and the problem of not mentioned prepared lotion stability in storage.
Summary of the invention
Technical problem to be solved by this invention overcomes the deficiencies in the prior art, a kind of silane paste protective agent with excellent perviousness, waterproof weather resistance, extended storage stability of oil-in-water-type is provided, this silane paste protective agent can produce solidifying pearl effect fast on concrete substrate, and concrete substrate surface can be made to produce lotus leaf effect, the automatic landing of the globule after a upper globule.
The present invention also provides a kind of preparation method of silane paste protective agent simultaneously.
For solving above technical problem, the present invention adopts following technical scheme:
A kind of silane paste protective agent, with weight, the formula of described silane paste protective agent is as follows:
Silane monomer 65% ~ 85%;
Emulsifying agent 3.0% ~ 5.0%;
Thickening material 0.5% ~ 1.0%;
Emulsion stabilizer 1.0% ~ 1.5%;
Buffer reagent 0.1% ~ 1%;
Deionized water 10% ~ 28%;
Wherein:
Described silane monomer is one or more mixtures mixed with arbitrary proportion in alkylalkoxy silane, and wherein, the alkyl in described alkylalkoxy silane is C3 ~ C18 alkyl, alkoxyl group is C1 ~ C4 alkoxyl group;
Described emulsifying agent is the combination of one or more in alkylphenol polyoxyethylene OP series, fatty alcohol-polyoxyethylene ether MOA series, paregal O S series, Tween serial, high fatty alcohol sulfuric ester, sulfonate emulsifier series;
Described emulsion stabilizer is any one in spans, polyethylene glycol monolaurate class, polyethylene glycol stearate class, Vinlub class.
Further, described C3 ~ C18 alkyl is propyl group, sec.-propyl, normal-butyl, isobutyl-, the tertiary butyl, n-pentyl, isopentyl, neo-pentyl, tert-pentyl, n-hexyl, isohexyl, n-heptyl, different heptyl, n-octyl, iso-octyl, n-nonyl, positive decyl, dodecyl, hexadecyl or octadecyl.Described C1 ~ C4 alkoxyl group is methoxyl group, oxyethyl group, positive propoxy, isopropoxy or isobutoxy.
Further, described thickening material is any one in polyacrylic and polyurethanes thickening material.
Further, described buffer reagent is alkali metal carboxylate damping fluid, alkali metal phosphate damping fluid, alkaline carbonate damping fluid, alkali metal sulphuric acid salt buffer, alkaline earth metal carboxylation's damping fluid, alkali earth metal phosphate damping fluid, alkaline earth metal carbonate damping fluid, alkaline earth metal sulphate damping fluid, ammonium carboxylate salt damping fluid, ammonium phosphate salt damping fluid, ammonium carbonate salts damping fluid or ammonium sulfate damping fluid.
Particularly, described buffer reagent is sodium carbonate buffer, sodium bicarbonate buffer liquid, sodium-acetate buffer or sodium hydrogen phosphate buffer.
In the present invention, all described raw material, all by being purchased and/or taking known means to prepare, when not illustrated, all meets the requirement of stdn chemical product.
The another technical scheme that the present invention takes is: a kind of preparation method of above-mentioned silane paste protective agent, and described preparation method comprises the following steps:
(1) by the composition of raw materials of described silane paste protective agent, deionized water, emulsifying agent, thickening material are added together with emulsion stabilizer in agitator, opening stirring velocity is that 1000rpm ~ 2000rpm stirs and obtains aqueous phase;
(2) low whipping speed is in the aqueous phase of step (1), drip silane monomer under the rotating speed of 1000rpm ~ 1500rpm to carry out pre-emulsification, obtain pre-emulsion, then in described pre-emulsion, add buffer reagent and be uniformly dispersed under the rotating speed of 1500rpm ~ 2000rpm and obtain white body of paste, obtain silane paste protective agent.
Due to the enforcement of technique scheme, the present invention compared with prior art tool has the following advantages:
Silane paste protective agent of the present invention selects the compound system of emulsifying agent and emulsion stabilizer, the emulsifying agent stablizer that only need add minute quantity in system can make the silane paste protective agent of preparation reach balance between the two in stability in storage and water-repellancy, solves most silane paste product stock poor stability, easily layering breakdown of emulsion, not easily stores the problem of transport.
Silane paste protective agent of the present invention selects the method for adding buffer reagent that the pH of system is remained on stable scope, prevents pH change in water-based system from causing silane monomer to be hydrolyzed, being polymerized, ensure that the validity of active ingredient, improve waterproof weather resistance.
Silane paste protective agent of the present invention adopts the method for adding thickening material to improve thixotropy and the viscosity of lotion, also for construction offers convenience while improving lotion stability in storage further.
Silane paste protective agent of the present invention is coated on concrete substrate and can makes concrete substrate surface in very short time, produce solidifying pearl effect.
Preparation method's technique of the present invention is simple, without the need to heating, does not use solvent, clean environment firendly.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1
First fatty alcohol-polyoxyethylene ether MOA-75.0g, polyethylene glycol stearate 1.0g and polyurethanes thickening material 0.5g are added in 23.5g water, dissolving is uniformly mixed under 1000rpm rotating speed, then under 1500rpm rotating speed, 40g isooctyltriethoxysilane, 30g n-octytriethoxysilane are added wherein, instill 0.2g sodium bicarbonate buffer liquid in the most backward milk sap and the emulsified dispersion of rotating speed in 2000rpm obtains homogeneous white body of paste.
Embodiment 2
First sodium lauryl sulphate 2.0g, polyethylene glycol monolaurate 1.5g and agent for polyacrylic acid thickening 0.7g are added in 15.8g water, dissolving is uniformly mixed under 1000rpm rotating speed, then under 1500rpm rotating speed, 30g propyl-triethoxysilicane, 50g n-octytriethoxysilane are added wherein, instill 0.4g sodium-acetate buffer in the most backward milk sap and the emulsified dispersion of rotating speed in 2000rpm obtains homogeneous white body of paste.
Embodiment 3
First alkylphenol polyoxyethylene OP-104.0g, Vinlub 1.2g and agent for polyacrylic acid thickening 1.0g are added in 27.8g water, dissolving is uniformly mixed under 1000rpm rotating speed, then under 1500rpm rotating speed, 40g dodecyltrimethoxysilane, 25g propyl-triethoxysilicane are added wherein, instill 1.0g sodium bicarbonate buffer liquid in the most backward milk sap and the emulsified dispersion of rotating speed in 2000rpm obtains homogeneous white body of paste.
Embodiment 4
First Tween803.0g, Vinlub 0.5g and polyurethanes thickening material 0.5g are added in 11.7g water, dissolving is uniformly mixed under 1000rpm rotating speed, then under 1500rpm rotating speed, 85g isooctyltriethoxysilane is added wherein, instill 0.3g sodium hydrogen phosphate buffer in the most backward milk sap and the emulsified dispersion of rotating speed in 2000rpm obtains homogeneous white body of paste.
Silane paste protective agent prepared in embodiment 1 ~ 4 stores at 45 DEG C does not separate out for one month, do not precipitate, and do not find any sign be separated, it 1 year is also like this at room temperature storing, because conclude that this silane paste protective agent has good stability in storage.
In order to evaluate the effect of silane paste protective agent prepared in the present invention, silane paste sample prepared by embodiment 1 ~ 4 is coated on by the regulation in JTJ275-2000 the concrete surface that intensity is C40, make the sample being numbered 01 ~ 04 respectively, silane paste in concrete surface several hours namely surface drying produce solidifying pearl effect, room temperature maintenance after 2 days concrete surface namely produce good ball effect, the globule is dripped in concrete surface, the globule can automatic landing, room temperature maintenance was tested by the testing method in specification JTJ275-2000 after two weeks, test result is as following table:
Table 1
Data from table 1 are known, the silane paste water-intake rate prepared in embodiments of the invention is all less than 0.01%, depth of penetration is even at more than 5mm, muriate absorbed dose reduced rate is all more than 90%, meet the requirement of JTJ275-2000 " concrete for marine works structural anticorrosion erosion technical specifications ", wherein depth of penetration is even higher than the requirement of 3 ~ 4mm in specification.
To sum up, silane paste protective agent provided by the invention not only stability in storage is good, and manufacture craft is simple, and water-tight corrosion-proof excellent in te pins of durability, has very high market popularization value.
Above to invention has been detailed description; its object is to allow the personage being familiar with this art can understand content of the present invention and be implemented; can not limit the scope of the invention with this; and the invention is not restricted to the embodiments described; the equivalence change that all spirit according to the present invention are done or modification, all should be encompassed within protection scope of the present invention.
Claims (6)
1. a silane paste protective agent, is characterized in that, with weight, the formula of described silane paste protective agent is as follows:
Silane monomer 65% ~ 85%;
Emulsifying agent 3.0% ~ 5.0%;
Thickening material 0.5% ~ 1.0%;
Emulsion stabilizer 1.0% ~ 1.5%;
Buffer reagent 0.1% ~ 1%;
Deionized water 10% ~ 28%;
Wherein:
Described silane monomer is one or more mixtures mixed with arbitrary proportion in alkylalkoxy silane, and wherein, the alkyl in described alkylalkoxy silane is C3 ~ C18 alkyl, alkoxyl group is C1 ~ C4 alkoxyl group;
Described emulsifying agent is the combination of one or more in alkylphenol polyoxyethylene OP series, fatty alcohol-polyoxyethylene ether MOA series, paregal O S series, Tween serial, high fatty alcohol sulfuric ester, sulfonate emulsifier series;
Described emulsion stabilizer is any one in spans, polyethylene glycol monolaurate class, polyethylene glycol stearate class, Vinlub class;
Described thickening material is polyurethanes thickening material.
2. silane paste protective agent according to claim 1, it is characterized in that, described C3 ~ C18 alkyl is propyl group, sec.-propyl, normal-butyl, isobutyl-, the tertiary butyl, n-pentyl, isopentyl, neo-pentyl, tert-pentyl, n-hexyl, isohexyl, n-heptyl, different heptyl, n-octyl, iso-octyl, n-nonyl, positive decyl, dodecyl, hexadecyl or octadecyl.
3. silane paste protective agent according to claim 1, is characterized in that, described C1 ~ C4 alkoxyl group is methoxyl group, oxyethyl group, positive propoxy, isopropoxy or isobutoxy.
4. silane paste protective agent according to claim 1, it is characterized in that, described buffer reagent is alkali metal carboxylate damping fluid, alkali metal phosphate damping fluid, alkaline carbonate damping fluid, alkali metal sulphuric acid salt buffer, alkaline earth metal carboxylation's damping fluid, alkali earth metal phosphate damping fluid, alkaline earth metal carbonate damping fluid, alkaline earth metal sulphate damping fluid, ammonium carboxylate salt damping fluid, ammonium phosphate salt damping fluid, ammonium carbonate salts damping fluid or ammonium sulfate damping fluid.
5. silane paste protective agent according to claim 4, is characterized in that, described buffer reagent is sodium carbonate buffer or sodium-acetate buffer.
6. a preparation method for the silane paste protective agent any one of claim 1 ~ 5 as described in claim, is characterized in that, described preparation method comprises the following steps:
(1) by the composition of raw materials of described silane paste protective agent, deionized water, emulsifying agent, thickening material are added together with emulsion stabilizer in agitator, opening stirring velocity is that 1000rpm ~ 2000rpm stirs and obtains aqueous phase;
(2) low whipping speed is in the aqueous phase of step (1), drip silane monomer under the rotating speed of 1000rpm ~ 1500rpm to carry out pre-emulsification, obtain pre-emulsion, then in described pre-emulsion, add buffer reagent and be uniformly dispersed under the rotating speed of 1500rpm ~ 2000rpm and obtain white body of paste, obtain silane paste protective agent.
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| CN104961496B (en) * | 2015-06-04 | 2017-03-01 | 苏州金螳螂园林绿化景观有限公司 | A kind of preparation method of the anti-accumulation of salt in the surface soil agent of the stone material for being laid on laterite ground |
| CN107512927A (en) * | 2016-06-17 | 2017-12-26 | 卡本复合材料（天津）有限公司 | A kind of impregnating with silane lotion and its compound method for antiseptic concrete |
| CN106186802A (en) * | 2016-07-19 | 2016-12-07 | 无锡鸿孚硅业科技有限公司 | A kind of preparation method of concrete silane paste waterproofing agent |
| CN106277911A (en) * | 2016-07-19 | 2017-01-04 | 无锡鸿孚硅业科技有限公司 | A kind of preparation method of silane emulsion waterproof agent for building |
| CN106186803B (en) * | 2016-07-25 | 2018-08-31 | 江苏苏博特新材料股份有限公司 | A kind of silane paste concrete protectant of high hydrophobicity and preparation method thereof |
| CN107502021B (en) * | 2017-07-24 | 2020-06-19 | 中交四航工程研究院有限公司 | Silane paste and preparation method thereof |
| CN108753159A (en) * | 2018-06-29 | 2018-11-06 | 无锡鸿孚硅业科技有限公司 | A kind of organic silicon emulsion concrete waterproofer and preparation method thereof |
| CN108726914A (en) * | 2018-07-05 | 2018-11-02 | 南雄鼎成新材料科技有限公司 | A kind of organosilan emulsion-type waterproofing gypsum agent and preparation method thereof |
| CN112110747A (en) * | 2019-06-19 | 2020-12-22 | 永春县永荣信息科技有限公司 | Preparation method of high-permeability silane impregnating paste |
| CN110342957B (en) * | 2019-07-19 | 2021-07-16 | 广东龙湖科技股份有限公司 | Pasty octyl silane concrete water repellent and preparation method thereof |
| CN114989648A (en) * | 2022-05-22 | 2022-09-02 | 中德新亚建筑材料有限公司 | Environment-friendly hydrophobic corrosion-resistant silane paste impregnant for concrete and preparation method thereof |
| CN115160019B (en) * | 2022-07-05 | 2023-04-14 | 江西晨光新材料股份有限公司 | Silane paste as well as preparation method and application thereof |
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| WO2007051833A1 (en) * | 2005-11-04 | 2007-05-10 | Sika Technology Ag | Use and method for reduction of corrosion |
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| CN101838154A (en) * | 2010-03-21 | 2010-09-22 | 荆州市江汉精细化工有限公司 | Organosilicon concrete protectant and preparation method thereof |
| US8852333B2 (en) * | 2012-02-06 | 2014-10-07 | Nano And Advanced Materials Institute Limited | Multi-functional environmental coating composition with mesoporous silica nanomaterials |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1328533A (en) * | 1998-12-10 | 2001-12-26 | 道·康宁公司 | Stable aqueous emulsion of nonpolar silanes having constant particle size |
| CN101786901A (en) * | 2010-03-05 | 2010-07-28 | 浙江凌志精细化工有限公司 | Organosilicon emulsion-type waterproofing agent for building material surfaces and preparation method thereof |
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