CN104844143B - A kind of spray-type aqueous inorganic gel waterproofing agent and preparation method thereof - Google Patents
A kind of spray-type aqueous inorganic gel waterproofing agent and preparation method thereof Download PDFInfo
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- CN104844143B CN104844143B CN201510219410.XA CN201510219410A CN104844143B CN 104844143 B CN104844143 B CN 104844143B CN 201510219410 A CN201510219410 A CN 201510219410A CN 104844143 B CN104844143 B CN 104844143B
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Abstract
The invention belongs to building material field, and in particular to a kind of spray-type aqueous inorganic gel waterproofing agent and preparation method thereof.Its objective is to provide a kind of concrete waterproofer with excellent water resistance, with mensuration dissolubility silicic sodium water solution as reactivity material, with water as diluent, be aided with the fluorocarbon surfactant of sodium hydroxide, catalyst and super-active.This concrete waterproofer has very high activity substance content, moderate viscosity and very low surface tension, therefore there is the ability of very strong permeability and closed concrete surface and internal capillary and micro-crack, its comprcssive strength and water resistance are remarkably improved after being sprayed onto concrete surface, meanwhile, catalyst is used so that the waterproofing agent has self-healing properties and secondary impermeability ability.
Description
Technical field
The invention belongs to construction water proof material technical field, and in particular to a kind of spray-type aqueous inorganic gel waterproofing agent
And preparation method thereof.
Background technology
After the corrosive substance such as water and water solublity carbon dioxide, chloride ion, sulfur dioxide and sulfate enters concrete, meeting
Reinforcing bar inside corrosion concrete, causes the degeneration of inside concrete reinforcing steel bar performance, affects the service life of building.
In past decades, what the degeneration of the concrete performance caused by above-mentioned reason had become that the whole world must face asks
Topic, substantial amounts of resource cost repair construction investment of the required expense sometimes even over the initial stage in the reparation of seepage building.
China, the leakage scenarios of building are especially surprising and severe, are a difficult problems for perplexing China's building trade for a long time, and
Scientific research personnel needs the important topic researched and solved badly.
At present, in conventional concrete surface waterproof material, sodium silicate aqueous solution base spray-type inorganic gel waterproof material
Why material can win the favor of people.However, the water resistance of same type of sodium silicate aqueous solution base waterproof material and
Price but varies because formula is different, the concentration of active substance sodium silicate aqueous solution, the use of catalyst whether and
The selection of surfactant causes the difference of surface tension, viscosity and the gelation time of waterproofing agent, gained waterproofing agent
The ability of penetrating power and closed concrete pore and micro-crack is also therefore different.In general, existing silicic acid
Sodio spray-type inorganic gel concrete waterproofer be present following aspects：Complicated process of preparation；It is expensive；Cause
Its surface tension cannot be reduced to by optimal value using common anion, cation and amphoteric surfactant, so as to cannot
Make its water resistance significantly optimal.
For these reasons, need a kind of composition of development badly and preparation process is simple, moderate cost, water resistance are excellent and make
With the simple inorganic gel waterproofing agent of mode.
The content of the invention
Demand of the present invention based on building permanent waterproof, it is desirable to provide a kind of spray-type aqueous inorganic gel waterproofing agent and
Its preparation method, simplifies preparation technology, reduces cost, while surface tension is reduced to minimum so as to which water resistance reaches
Most preferably.
A kind of spray-type aqueous inorganic gel waterproofing agent, is characterized in that：By sodium silicate aqueous solution, sodium hydroxide, catalyst,
Surfactant and water are formulated, and the weight/mass percentage composition of each component is as follows：
Sodium silicate aqueous solution 80～95%；
Sodium hydroxide 1～14%；
Catalyst 0.1～1%；
Surfactant 0.01～0.08%；
Water 1～6%.
Preferably, the sodium silicate aqueous solution is commercially available finished product colourless transparent liquid, sodium oxide therein and titanium dioxide
The mass content of silicon is respectively 8.2% and 26%, and modulus is 3.1～3.5.This sodium silicate aqueous solution impurity content is low, is prepared into
Waterproofing agent water white transparency.
Preferably, the sodium hydroxide is industrial sodium hydroxide.
Preferably, the catalyst is that calcium hydroxide occurs in chemical reaction process in sodium silicate aqueous solution with concrete
The HM1500 waterproofing agent special-purpose catalysts of catalytic action are played, this is a kind of special complex compound catalyst of import, although which is concrete
Composition is at present still in confidential state, but the results show can be matched with sodium silicate aqueous solution well, reaches secondary anti-
The effect oozed.
Preferably, surfactant used is with super-active, can significantly reduce the capillary fluorine carbon table of waterproofing agent
Face activating agent, can be the mixture of one or more fluorocarbon surfactants, and fluorocarbon surfactant can be with extremely low
Concentration significantly decreases the capillary class material of solvent and is referred to as surfactant, is most important in special surfactant
Kind, refer to that the hydrogen atom in the hydrocarbon chain of hc-surfactant is completely or partially replaced by fluorine atoms, i.e., fluorocarbon chain replace
Nonpolar base in hydrocarbon chain, therefore surfactant does not only have the performance of hydrophobic property and unique oleophobic.Fluorocarbon surface
The classification foundation of activating agent its polar group structure difference can be divided into two big class of ion-type and nonionic.Ion-type can be divided into again
Anionic, cationic and amphoteric ion type fluorocarbon surface.The mixture of any one or more than one surfactants is all
Can be used for, in the present invention, realizing invention effect.
Preferably, the solution viscosity of the spray-type aqueous inorganic gel waterproofing agent is 10～12s（Using -4 viscosity of painting
Meter determines surface tension）, less than 26 mN/m, final setting time is 2.5～3.5h to surface tension.
The present invention also provides the preparation method of above-mentioned spray-type aqueous inorganic gel waterproofing agent, it is characterised in that include as
Lower step：
Step one, sodium silicate aqueous solution solution, sodium hydroxide and water are measured or are weighed by formula, be added in Scattered Kettle；
Step 2, reactor is at the uniform velocity stirred 10 minutes under 1200 revs/min of rotating speeds；
The catalyst and surfactant of formula ratio are added in step 3, the compound for thinking in reactor；
Step 4, continuation are by reactor in dispersed with stirring 30 minutes under 1200 revs/min of rotating speeds；
Step 5, blowing subpackage.
Compared with prior art, it is of the invention it is a technical advantage that：
1st, waterproofing agent of the present invention has very high activity substance content, moderate viscosity and very low surface tension, energy
It is enough with concrete substrate in porlandite there is chemical reaction, the inorganic calcium silicate hydrate gel of formation is so as to blocking pore and micro-
Crackle, therefore the ability with very strong permeability and closed concrete surface and internal capillary and micro-crack, are sprayed onto mixed
Its comprcssive strength and water resistance are remarkably improved behind solidifying soil surface；
2nd, catalyst is used so that the waterproofing agent has self-healing properties and secondary impermeability ability, and HM1500 waterproofing agents are special
With catalyst, this is a kind of special complex compound catalyst of import, and the special-purpose catalyst is colourless, can be with miscible with water, and its density is
1.1g/cm3, although its concrete composition at present still in confidential state, but the results show can well with sodium silicate water
Solution is matched, and the use of very small amount catalyst is not only catalyzed whole gelation reaction process, after completion of the reaction, still remains in mixed
In solidifying soil, in the case of secondary seepage, reaction can be continued with the porlandite in concrete and realize self-regeneration, reach two
Secondary impervious effect；
The surface tension of waterproofing agent is reduced to 26 mN/m, is solved by the 3rd, selection of super-active fluorocarbon surfactant
The surface tension of water at most can only be reduced to 27 mN/m by existing conventional anion, cation and amphoteric surfactant
The technical problem of left and right so that waterproofing agent has more preferable permeability.This is because, liquid is oozed to blown-out concrete material
Capillary force depended on thoroughly, and the contact angle of the capillary force then surface tension of liquid body, liquid and concrete surface
And the size of capillary porosity.Surface tension is lower, and the penetrating power of waterproofing agent is stronger, and its waterproof ability is higher.
Additionally, the raw material and product of waterproofing agent of the present invention are inorganic matters, it is to avoid organic problem of aging, waterproof effect
Fruit is almost permanent；Without volatile organic component or product, therefore environmental friendliness；Preparation method is extremely simple, nothing
Pressurization need to be heated, thus it is with low cost.Can be widely applied to the waterproof of the building materials such as concrete and cement mortar.
Specific embodiment
To make the purpose of the present invention, technical scheme and feature become apparent from understanding, in this part, with reference to specific embodiment party
Formula, is illustrated in more detail to a kind of spray-type aqueous inorganic gel waterproofing agent and preparation method thereof.Need special instruction
It is that the specific embodiment described by this part is intended merely to explain the present invention, rather than in order to limit the present invention.Involved embodiment
In material, if no special instructions, be the finished product of market purchasing.
Embodiment 1
The present embodiment spray-type inorganic gel waterproof material, the percentage by weight of each component are as follows：Sodium silicate aqueous solution
93%th, sodium hydroxide 1%, catalyst 0.2%, fluorocarbon surfactant 0.03%, deionized water 5.77%.
Sodium silicate aqueous solution 80～95%；
Sodium hydroxide 1～14%；
Catalyst 0.1～1%；
Surfactant 0.01～0.08%；
Deionized water 1～6%.
Embodiment 2
The present embodiment spray-type inorganic gel waterproof material, the percentage by weight of each component are as follows：Sodium silicate aqueous solution
80%th, sodium hydroxide 14%, catalyst 0.1%, fluorocarbon surfactant 0.01%, deionized water 5.89%.
Embodiment 3
The present embodiment spray-type inorganic gel waterproof material, the percentage by weight of each component are as follows：Sodium silicate aqueous solution
95%th, sodium hydroxide 2.97%, catalyst 1%, fluorocarbon surfactant 0.03%, deionized water 1%.
Embodiment 4
The present embodiment spray-type inorganic gel waterproof material, the percentage by weight of each component are as follows：Sodium silicate aqueous solution
90%th, sodium hydroxide 8%, catalyst 0.92%, fluorocarbon surfactant 0.08%, deionized water 1%.
The preparation method of the spray-type inorganic gel waterproof material of four embodiments of the invention is as follows：Match somebody with somebody by each embodiment
Side, weighs sodium silicate aqueous solution, sodium hydroxide and deionized water, is added in Scattered Kettle, even under 1200 revs/min of rotating speeds
The catalyst and surfactant of formula ratio after speed stirring 10 minutes, are added, continues the dispersed with stirring after 30 minutes under this rotating speed
Blowing subpackage.
According to the method for 1723～1993 defined of People's Republic of China's GB GB/T, above-described embodiment waterproof is determined
The viscosity of agent；According to the method for 8077～2012 defined of People's Republic of China's GB GB/T, its pH value and surface are determined
Power；When determining the initial set and final set of waterproofing agent according to People's Republic of China (PRC) building material industry standard JC/T 1018～2006
Between and prepare impervious normal concrete sample；According to the method for 50082～2009 defined of People's Republic of China's GB GB/T
Survey its impervious height.The measurement result of embodiment 1 is as shown in table 1.
The performance test results of 1. embodiment of table, 1 waterproofing agent
Analysis knows, all properties index all meet People's Republic of China (PRC) building material industry standard JC/T 1018～
2006 requirement, wherein needing the index for quantifying to exceed well over the requirement of standard, illustrates that the spray-type inorganic gel of the embodiment is prevented
Water preparation excellent performance.In experimentation, the performance test of correlation, test result and reality are also carried out to the coating of other embodiment
Apply example 1 to be similar to, the index for requiring far beyond standard, here is omitted.
In above-mentioned all embodiments, sodium silicate aqueous solution is commercially available finished product colourless transparent liquid, i.e. waterglass, therein
The mass content of sodium oxide and silicon dioxide is respectively 8.2% and 26%, and modulus is 3.1～3.5；Sodium hydroxide is technical grade hydrogen-oxygen
Change sodium；Catalyst is that calcium hydroxide plays catalytic action in there is chemical reaction process in sodium silicate aqueous solution with concrete
HM1500 waterproofing agent special-purpose catalysts；Surfactant is with super-active, can significantly reduce the capillary fluorine of waterproofing agent
One or more mixture in carbons surfactant, this all embodiment is with du pont company
ZONYL series fluorine carbon surfactants；The solution viscosity of spray-type aqueous inorganic gel waterproofing agent is 10～12s, and surface is opened
Power is less than 26 mN/m, and final setting time is 2.5～3.5h.
It is emphasized that the foregoing is only the individual example after present invention optimization, be not limited to the present invention, it is all
Any modification, equivalencing and improvement made within spirit of the invention and principle etc., all should belong to protection scope of the present invention.
Claims (4)
1. a kind of spray-type aqueous inorganic gel waterproofing agent, it is characterised in that：By sodium silicate aqueous solution, sodium hydroxide, special urge
Agent, surfactant and water are formulated, and the weight/mass percentage composition of each component is as follows：
Sodium silicate aqueous solution 80～95%；
Sodium hydroxide 1～14%；
Catalyst 0.1～1%；
Surfactant 0.01～0.08%；
Water 1～6%；
The surfactant is with super-active, can significantly reduce the capillary fluorocarbon surfactant of waterproofing agent；
The catalyst is that calcium hydroxide plays catalysis work in there is chemical reaction process in sodium silicate aqueous solution with concrete
HM1500 waterproofing agent special-purpose catalysts；
The mass content of sodium oxide and silicon dioxide in the sodium silicate aqueous solution be respectively 8.2% and 26%, modulus be 3.1～
3.5。
2. a kind of spray-type aqueous inorganic gel waterproofing agent according to claim 1, it is characterised in that：The sodium hydroxide
For industrial sodium hydroxide.
3. a kind of spray-type aqueous inorganic gel waterproofing agent according to claim 1, it is characterised in that：The spray-type water
Property inorganic gel waterproofing agent solution viscosity be 10～12s, surface tension be less than 26 mN/m, final setting time be 2.5～3.5h.
4. the preparation method of a kind of spray-type aqueous inorganic gel waterproofing agent according to claims 1 to 3 any one, its
It is characterised by, comprises the steps：
Step one, sodium silicate aqueous solution solution, sodium hydroxide and water are measured or are weighed by formula, be added in Scattered Kettle；
Step 2, reactor is at the uniform velocity stirred 10 minutes under 1200 revs/min of rotating speeds；
The catalyst and surfactant of formula ratio are added in step 3, the compound for thinking in reactor；
Step 4, continuation dispersed with stirring 30 minutes under 1200 revs/min of rotating speeds by reactor；
Step 5, blowing subpackage.
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| CN107162468A (en) * | 2017-06-14 | 2017-09-15 | 合肥易美特建材有限公司 | A kind of concrete waterproofer and preparation method thereof |
| CN112011274A (en) * | 2020-09-03 | 2020-12-01 | 四川童燊防水工程有限公司 | Organic waterproof emulsion coating and preparation method thereof |
| CN114149196A (en) * | 2020-09-07 | 2022-03-08 | 河南省蓝岛环保科技有限公司 | Permeable multifunctional waterproof agent and preparation method thereof |
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| CN101407428A (en) * | 2008-08-12 | 2009-04-15 | 广州秀珀化工股份有限公司 | Concrete superficial hardener and construction method thereof |
| CN101811841A (en) * | 2009-12-18 | 2010-08-25 | 河南省绿韵建材有限公司 | Inorganic waterproofing agent and preparation method thereof |
| CN103214265A (en) * | 2013-04-28 | 2013-07-24 | 安徽省交通规划设计研究院有限公司 | Method for preparing water-based penetration type concrete protective agent |
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| JP3840882B2 (en) * | 2000-07-07 | 2006-11-01 | 日本ポリウレタン工業株式会社 | Adhesive composition and filler composition for concrete |
| JP2002275469A (en) * | 2001-03-19 | 2002-09-25 | Tokai Rubber Ind Ltd | Chemical for solidifying natural ground |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101407428A (en) * | 2008-08-12 | 2009-04-15 | 广州秀珀化工股份有限公司 | Concrete superficial hardener and construction method thereof |
| CN101811841A (en) * | 2009-12-18 | 2010-08-25 | 河南省绿韵建材有限公司 | Inorganic waterproofing agent and preparation method thereof |
| CN103214265A (en) * | 2013-04-28 | 2013-07-24 | 安徽省交通规划设计研究院有限公司 | Method for preparing water-based penetration type concrete protective agent |
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