CN100500790C - Composition of waterproof latex, and waterproof application on surface of building - Google Patents
Composition of waterproof latex, and waterproof application on surface of building Download PDFInfo
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- CN100500790C CN100500790C CNB2004100182078A CN200410018207A CN100500790C CN 100500790 C CN100500790 C CN 100500790C CN B2004100182078 A CNB2004100182078 A CN B2004100182078A CN 200410018207 A CN200410018207 A CN 200410018207A CN 100500790 C CN100500790 C CN 100500790C
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Abstract
A water-proof composite emulsion for the surface of building contains proportionally organic silane, oligosiloxane, anionic surfactant, non-ionic surfactant and water.
Description
Technical field
The present invention relates to the water-proof emulsion composition that uses on water-proof emulsion composition and waterproof purposes, especially concrete on building surface or the mortar uneven surface.
Background technology
As everyone knows, concrete structure itself has the very long life-span, but owing to suffers surrounding environment as the erosion of sour gas, water and water-soluble inorganic salt and the influence that goes round and begins again of exposing to the sun and rain, to make building surface generation carbonization and efflorescence.Simultaneously, along with objectionable impurities is invaded interior of building reinforcing bar position, cause reinforcement corrosion, and cause building destruction.Suffer erosion damage and cause great financial loss by buildings every year.
In order to prevent that buildings from being corroded, on reinforcing bar, be coated with one deck corrosion protection layer usually or be coated with one deck polymer base polymer protective layer (as polyacrylic ester, urethane or unsaturated polyester family macromolecule polymkeric substance) and improve concrete compactness at building surface.Yet this family macromolecule rete is damaged easily or is aging.
The eighties, E.M.Brown (USP3772065) adopts pure organosilane such as isobutyl-triethoxyl silane or its organic solvent diluting thing protective material first.But because the boiling point of used organosilane is low, volatility is big, and the alkali resistance deficiency is so waterproof effect is still not ideal.In addition, owing to adopt organic solvent, so cause environmental pollution easily.
The nineties later stage various countries (Ri Tekai clear 156164 for Chiyodu-ku, EP0761675A2) successively develop high boiling point, alkali-proof chain alkyl (C
6～C
8) the organosilane compounds is the building waterproof protective material that raw material is made aq. type, be used widely on the engineering.The agent of this chain alkyl organosilane waterproofing protection has the perviousness height, the advantage that water resistance is good and alkali resistance is good.Yet, because the cost of this chain alkyl organosilane is higher, especially need to consume a large amount of long-chain organosilane protective materials for more coarse concrete surface, therefore be not suitable for shaggy buildings is carried out WATER REPELLENT.Therefore, need at present a kind ofly not only to have had better water-repellancy but also can reduce the waterproofing agent composite that uses the chain alkyl organosilane, thereby reduce the cost of building waterproof agent.
Summary of the invention
The object of the present invention is to provide a kind of concrete or mortar building surface water-proof emulsion composition.Gross weight with this water-proof emulsion composition is a benchmark, the above-mentioned emulsion composition comprises the organosilane that 10-40 weight % represents with general formula I, oligosiloxane, 0.01-1 weight % anion surfactant and the 1.0-15 weight % nonionogenic tenside that 2-25 weight % represents with general formula I I, surplus is a water
R
1[R＇O]
3Si (I)
R represents C in the formula
6-12Alkyl, R ＇ represents C
1-4Alkoxyl group,
R＂
3SiO-[R＇＂
2SiO]
0-3SiR＂
3 (II)
R ＂ represents C in the formula
1-4Alkyl or C
1-4Alkoxyl group, R ＇ ＂ represents C
1-4Alkyl.
Water-proof emulsion composition of the present invention is applicable to the WATER REPELLENT of various building surfaces, is specially adapted to coarse concrete or mortar building surface.Water-proof emulsion composition of the present invention can be adjusted the different penetration degreies of organosilane, forms fine and close water-proof coating at building surface, further reduces the volatility of organosilane and improves alkali resistance, helps engineering and promotes the use of.
Embodiment
Used organosilane is represented with general formula I in the water-proof emulsion composition of the present invention:
R
1[R＇O]
3Si (I)
R represents C in the formula
6-12Alkyl; R ' expression C
1-4Alkoxyl group.
The contained carbonatoms of chain alkyl should be more than C6 in the above-mentioned organosilane.If the contained carbonatoms of chain alkyl is less than C6, then organosilane can very fast hydrolysis, and volatile quantity is big.If carbonatoms contained in the chain alkyl is too many, as surpassing C12, the monomeric manufacturing cost costliness of organosilane then, the silane addition molecule infiltration is owing to sterically hinderedly become difficult.Above-mentioned chain alkyl preferably contains 8-10 carbon atom.
Alkoxyl group in the organosilane preferably contains 1-2 carbon atom.
The object lesson of above-mentioned organosilane is just or the isohexyl Trimethoxy silane, just or the isohexyl triethoxyl silane, just or isooctyltrimethoxysi,ane, just or the iso-octyl triethoxyl silane, just or iso-octyl three butoxy silanes, just or different nonyl Trimethoxy silane, just or different nonyl triethoxyl silane, just or the isodecyl Trimethoxy silane, just or the isodecyl triethoxyl silane, just or isodecyl tripropoxy silane, just or isodecyl three butoxy silanes, just or different undecyl Trimethoxy silane, just or different undecyl triethoxyl silane, just or Permethyl 99A. base Trimethoxy silane and just or Permethyl 99A. ethyl triethoxy silicane alkane.
Preferred positive decyl Trimethoxy silane, positive decyl triethoxyl silane, dodecyl Trimethoxy silane and the dodecyl triethoxyl silane of using.
Above-mentioned organosilane can use separately, also can be used in combination.
In the water-proof emulsion composition of the present invention, the consumption of organosilane is generally 10-40 weight %, is preferably 15-30 weight %, is benchmark with the gross weight of this water-proof emulsion composition.
Oligosiloxane used in the water-proof emulsion composition of the present invention is represented with general formula I I:
R＂
3SiO-[R＇＂
2SiO]
0-3SiR＂
3 (II)
R ＂ represents C in the formula
1-4Alkyl or C
1-4Alkoxyl group is preferably represented C
1-2Alkyl or C
1-2Alkoxyl group; R ＇ ＂ represents C
1-4Alkyl is preferably represented C
1-2Alkyl.
The object lesson of above-mentioned siloxanes is a hexamethyldisiloxane, hexaethyldisiloxane, six butyl sily oxide, dimethyl tetraethoxy sily oxide, diethyl tetraethoxy sily oxide, tetraethyl-diethoxy sily oxide, octamethyltrisiloxane, the octaethyl trisiloxanes, dimethyl six trisiloxane ethoxylate, tetramethyl-tetraethoxy trisiloxanes, decamethyl tetrasiloxane, ten ethyl tetrasiloxanes, ten butyl tetrasiloxanes, Hexaethyl tetraethoxy tetrasiloxane, tetramethyl-six oxyethyl group tetrasiloxanes, ten dimethyl, five siloxanes, ten diethyl, five siloxanes, hexamethyl six oxyethyl groups, five siloxanes and pentamethyl-seven oxyethyl groups five siloxanes.
Preferential dimethyl tetraethoxy sily oxide, tetramethyl-tetraethoxy trisiloxanes, Hexaethyl tetraethoxy tetrasiloxane and pentamethyl-seven oxyethyl groups five siloxanes of using.
Above-mentioned siloxanes can use separately, also can be used in combination.
In the water-proof emulsion composition of the present invention, the consumption of above-mentioned siloxanes is 2-25 weight %, is preferably 3-15 weight %, is benchmark with the gross weight of this water-proof emulsion composition.
Water-proof emulsion composition of the present invention uses nonionogenic tenside commonly used in this area, for example, and C
8-18Alkyl polyoxyethylene ether, C
8-16Fluorine-containing alkyl polyoxyethylene ether, C
6-12Alkylphenol polyoxyethylene, C
8-20Fatty acid polyglycol ester, sorbitol polyoxyethylene ether C
10-20The polydimethylsiloxane of fatty acid ester and polyoxyethylene modification.
C
8-18The object lesson of alkyl polyoxyethylene ether comprises octyl group polyoxyethylene (6), (8) (10), (15) and (20) ether, lauryl alcohol polyethylene glycol oxide (8) (10), (15), (20) and (25) ether, cetyl alcohol polyoxyethylene (8), (15), (20), (30) ether, oleic alcohol polyoxyethylene (10), (15), (20) and (25) ether, stearyl polyoxyethylene (15), (20), (25) and (30) ether.
C
8-16The object lesson of fluorine-containing alkyl polyoxyethylene ether comprises perfluoro capryl polyoxyethylene (8), (15), (20) and (25) ether, perfluor decyl polyoxyethylene (10), (15), (20) and (25) ether, perfluor 16/octadecyl polyoxyethylene (10), (15), (20), (25) and (30) ether.
C
6-12The object lesson of alkylphenol polyoxyethylene comprises octyl phenol polyoxy ethene (10), (18) and (30) ether, Nonyl pheno (10), (16) and (30) ether, lauryl phenol polyoxyethylene (10), (20) and (30) ether.
C
8-20The object lesson of fatty acid polyglycol ester comprises sad polyoxyethylene glycol (8), (16), (25), (30) ester, lauric acid polyoxyethylene glycol (12), (20), (30) ester, oleic acid polyoxyethylene glycol (10), (20), (30) ester, stearic acid polyoxyethylene glycol (8), (20), (30) ester and oxystearic acid polyoxyethylene glycol (10), (20), (30) ester.
Sorbitol polyoxyethylene ether C
10-20The object lesson of fatty acid ester comprises anhydrous sorbitol polyoxyethylene (10) and (20) ether laurate, anhydrous sorbitol polyoxyethylene (20) ether cetylate, anhydrous sorbitol polyoxyethylene (20), (30) ether stearate.
The example of the polydimethylsiloxane of polyoxyethylene modification comprises:
(CH
3)
3Si-(OSi-(CH
3)
2)
mOSi-CH
2-CH
2-CH
2-(OC
2H
4)
nOR (III)
M is 3,5,7,9 or 11 in the formula, and n is 8,10,12,14,16 or 20, and R has definition same as described above.
Water-proof emulsion composition of the present invention preferably uses C
8-18Alkyl polyoxyethylene ether, C
8-12Fluorine-containing alkyl polyoxyethylene ether, C
6-12Alkylphenol polyoxyethylene, C
8-20Fatty acid polyglycol ester and sorbitol polyoxyethylene ether C
10-20Fatty acid ester.
Especially preferably use cetyl alcohol polyoxyethylene (8) ether, stearyl polyoxyethylene (20) ether, perfluoro capryl polyoxyethylene (8) ether, Nonyl pheno (10) ether, Nonyl pheno (16) ether, stearic acid polyoxyethylene glycol (8) ester, lauric acid polyoxyethylene glycol (12) ester, anhydrous sorbitol polyoxyethylene (20) ether stearate, anhydrous sorbitol polyoxyethylene (20) ether laurate among the present invention.
In the water-proof emulsion composition of the present invention, the consumption of nonionogenic tenside is generally 1.0-15 weight %, is preferably 5-10 weight %, is benchmark with the gross weight of this water-proof emulsion composition.
Water-proof emulsion composition of the present invention also contains anion surfactant commonly used in this area, for example is soap type, sulfonate type, sulfate type, phosphate ester salt type and sulfosuccinic ester type anion surfactant.
The object lesson of anion surfactant commonly used comprises sodium laurate, sodium stearate, Sodium dodecylbenzene sulfonate, Witco 1298 Soft Acid ammonium, sodium laurylsulfonate, sodium octyl sulfate, Sodium Lauryl Sulphate BP/USP, decyl polyoxyethylene (4) ether phosphate sodium, sulfo-succinic acid diisobutyl ester sodium, Sodium docusate.
Preferred sodium laurate, sodium stearate, sodium laurylsulfonate, Sodium dodecylbenzene sulfonate, the sulfo-succinic acid diisobutyl ester sodium of using.
The consumption of anion surfactant is 0.01-1 weight %, is preferably 0.3-0.6 weight %, is benchmark with the gross weight of this water-proof emulsion composition.
The purpose of mixing use nonionogenic tenside and anion surfactant is the HLB value scope of reconciliation statement surface-active agent, makes above-mentioned organosilane and siloxanes form stable water miscible liquid.
It is different to look in the water-proof emulsion composition content of organosilane and siloxanes, can obtain suitable hydrophilic (HLB) value by the ratio that changes two kinds of tensio-active agents.Be applicable to that HLB value of the present invention is 10-15, is preferably 11-14.
Except oligosiloxane, nonionogenic tenside and the anion surfactant of the organosilane of above-mentioned general formula (I) expression, general formula (II) expression, water-proof emulsion composition of the present invention also can contain other component commonly used in this area, as thickening material, permeate agent, dyestuff and pigment etc.
Water-proof emulsion preparation of compositions method of the present invention is very simple, only need to add the organosilane of general formula (I) expression, the oligosiloxane of general formula (II) expression, suitable nonionogenic tenside and anion surfactant in the entry in proportion, carry out high-speed stirring with decollator then, just obtain stable water-proof emulsion composition.The stirring velocity of decollator is generally 800-1000 rev/min (rpm).
Water-proof emulsion composition of the present invention is a kind of avirulent environmentfriendly products, can not produce pollution to environment.Before the use, not harsh to the pre-treatment requirement of building surface, general only the need removed building surface surface contaminants and dust, employing brushing under surface dry condition, and spraying, coating methods such as roller coating are coated in building surface with it.After air-dry 3～6 hours, on building surface, promptly begin to produce provide protection under the normal temperature of coating back.
After water-proof emulsion composition of the present invention is coated in building surface, organosilane and oligosiloxane are penetrated into 2～3mm in the surface along buildings capillary aperture, form a kind of water-repellent layer of densification at building surface, block the capillary aperture, thereby the intrusion of anti-sealing and water-soluble harmful inorganic salts, can prevent of the infringement of water-soluble acid gas equally, prevent the corrosion of reinforcing bar in the buildings, thereby prolong the work-ing life of buildings buildings.Water-proof emulsion composition of the present invention not only has excellent water resistance and alkali resistance, and can reduce the depth of penetration of organosilane at building surface, thereby reduces the consumption of organosilane, greatly reduces cost.
Water-proof emulsion composition of the present invention adopts the appraisal procedure of the protection effect of buildings:
Normal concrete or mortar surface to the coating protection agent after contrast water-intake rate reduced rate.With reference to JGJ51 " light aggregate concrete technical regulation ".
Embodiment
Below the present invention is further illustrated with embodiment, but these embodiment should be interpreted as the restriction to the present invention's protection.
Embodiment 1:20 weight % organosilane/silicone emulsion protective material
With GFJ-04 type dispersion machine (available from Shanghai modern environment engineering and technological research institute), under high-speed stirring (800～1000rpm), restrain in the mixture of sodium lauryl sulfonate to 17.6 gram n-octyl triethoxyl silanes, 2.4 gram dimethyl tetraethoxy sily oxide, 6.5 gram Nonyl pheno (10) ethers, 1.02 gram stearic acid polyoxyethylene glycol (8) esters and 0.03 under the room temperature, add 72.45 gram water, obtain emulsion, room temperature was placed 3 months, observed no abnormal.
Embodiment 2:30 weight % organosilane/silicone emulsion protective material
With with embodiment 1 in identical dispersion machine, under high-speed stirring (800～1000rpm), restrain in the mixture of Sodium dodecylbenzene sulfonate to 25 gram isooctyltrimethoxysi,ane, 5 gram hexamethyldisiloxane, 5.5 gram perfluoro capryl polyoxyethylene (8) ethers, 1.00 gram lauric acid polyoxyethylene glycol (12) esters and 0.03 under the room temperature, add 63.47 gram water, obtain emulsion, room temperature was placed 3 months, observed no abnormal.
Embodiment 3:40 weight % organosilane/silicone emulsion protective material
With with embodiment 1 in identical dispersion machine, under high-speed stirring (800～1000rpm), restrain in the mixture of sodium stearate to the positive decyl triethoxyl silane of 35.2 grams, 4.8 gram dimethyl tetraethoxy sily oxide, 5.8 gram Nonyl pheno (16) ethers, 0.9 gram cetyl alcohol polyoxyethylene (8) ether, 0.02 under the room temperature, add 53.28 gram water, obtain emulsion, room temperature was placed 3 months, observed no abnormal.
Embodiment 4:65 weight % organosilane/silicone emulsion protective material
With with embodiment 1 in identical dispersion machine, under high-speed stirring (800～1000rpm), restrain in the mixture of sulfo-succinic acid diisobutyl ester to 40 gram isodecyl triethoxyl silanes, 25 gram Hexaethyl tetraethoxy tetrasiloxanes, 7.5 gram stearyl polyoxyethylene (20) ethers, 0.8 under the room temperature, add 26.7 gram water, obtain emulsion, room temperature was placed 3 months, observed no abnormal.
Embodiment 5:20 weight % organosilane/silicone emulsion protective material
With with embodiment 1 in identical dispersion machine, under high-speed stirring (800～1000rpm), 30-40 ℃ in the mixture of 10 gram dodecyl triethoxyl silanes, 10 gram pentamethyl-s, seven oxyethyl groups, five siloxanes, 4.5 gram anhydrous sorbitol polyoxyethylene (20) ether stearates, 0.5 gram decyl polyoxyethylene (4) ether phosphate sodium, add 75.0 gram water, obtain emulsion, room temperature was placed 3 months, observed no abnormal.
Embodiment 6:35 weight % organosilane/silicone emulsion protective material
With with embodiment 1 in identical dispersion machine, under high-speed stirring (800～1000rpm), 30-40 ℃ in the mixture of 20 gram Permethyl 99A. base Trimethoxy silanes, 15 gram tetramethyl-tetraethoxy trisiloxanes, 4.5 gram anhydrous sorbitol polyoxyethylene (20) ether laurates, 0.1 gram sodium laurate, add 60.5 gram water, obtain emulsion, room temperature was placed 3 months, observed no abnormal.
Comparative Examples 1:30 weight % organosilane emulsion
With with embodiment 1 in identical dispersion machine, under high-speed stirring (800～1000rpm), in the mixture of 30 gram n-octyl triethoxyl silanes, 5.62 gram lauryl alcohol polyethylene glycol oxide (16) ethers, 0.03 gram sodium stearate, add 64.35 gram water, obtain emulsion, room temperature was placed 3 months, observed no abnormal.
Comparative Examples 2:40 weight % organosilane emulsion
With with embodiment 1 in identical dispersion machine, under high-speed stirring (800～1000rpm), in the mixture of the positive decyl triethoxyl silane of 40 grams, 5.92 gram lauryl alcohol polyethylene glycol oxide (16) ethers, 0.03 gram sodium stearate, add 54.05 gram water, obtain emulsion, room temperature was placed 3 months, observed no abnormal.
Test example 1
The mortar preparation: water/cement weight is than=0.6, and sand/cement weight is made the test block of (70 * 70 * 70) millimeter than=2.75, and mark was supported 28 days, 28 days ultimate compression strength 35.2MPa.
Then the emulsion compositions that makes among embodiment 1-6 and the Comparative Examples 1-2 is used to be brushed on the mortar specimen that makes as stated above, the brushing amount is 350 gram/rice
2
Press JGJ51 " light aggregate concrete technical regulation ", test the water-intake rate of each mortar specimen.The results are shown in Table 1.
Table 1: the water-intake rate of mortar specimen
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Comparative Examples 1 | Comparative Examples 2 | |
| 24 hours water-intake rate reduced rates (%) | 89.1 | 88.8 | 88.8 | 88.7 | 88.6 | 89.1 | 88.3 | 82.2 |
| 7 days water-intake rate reduced rates (%) | 87.9 | 87.4 | 87.6 | 87.4 | 87.9 | 87.6 | 81.6 | 81.5 |
| Depth of penetration (millimeter) | 2-3 | 2-3 | 2-3 | 2-3 | 2-3 | 2-3 | 4-6 | 5-6 |
This shows, compare with the coating that is formed on mortar and low strength (C20-30) concrete by the contrast emulsion that only contains organic silane, the coating that is formed by the water-proof emulsion composition of the present invention that contains organosilane and oligosiloxane simultaneously has lower 7 days water-intake rate reduced rates and less depth of penetration.In other words, owing in the organosilane emulsion of routine, added oligosiloxane, suitably reduced the depth of penetration of organosilane at building surface, make organosilane be enriched in building surface, form fine and close water-proof coating, thereby improve long-term water resistance, and, reduced cost owing to reduced the consumption of organosilane.
Claims (10)
1. water-proof emulsion composition, gross weight with this water-proof emulsion composition is a benchmark, it comprises the organosilane that 10-40 weight % represents with general formula I, oligosiloxane, 0.01-1 weight % anion surfactant and the 1.0-15 weight % nonionogenic tenside that 2-25 weight % represents with general formula I I, surplus is a water
R
1[R′O]
3Si (I)
R represents C in the formula
6-12Alkyl, R ' expression C
1-4Alkoxyl group,
R＂
3SiO-[R″′
2SiO]
0-3SiR＂
3 (II)
R ＂ represents C in the formula
1-4Alkyl or C
1-4Alkoxyl group, R " ' expression C
1-4Alkyl.
2. water-proof emulsion composition as claimed in claim 1 is characterized in that R represents C
8-10Alkyl.
3. water-proof emulsion composition as claimed in claim 1 is characterized in that R ' expression C
1-2Alkoxyl group.
4. as each described water-proof emulsion composition among the claim 1-3, it is characterized in that it contains 15-30 weight % organosilane, be benchmark with the gross weight of this water-proof emulsion composition.
5. water-proof emulsion composition as claimed in claim 1 is characterized in that R ＂ represents C
1-2Alkyl or C
1-2Alkoxyl group, R " ' expression C
1-2Alkyl.
6. as claim 1 or 5 described water-proof emulsion compositions, the consumption that it is characterized in that described siloxanes is 3-15 weight %, is benchmark with the gross weight of this water-proof emulsion composition.
7. water-proof emulsion composition as claimed in claim 1 is characterized in that described nonionogenic tenside is selected from C
8-18Alkyl polyoxyethylene ether, C
8-16Fluorine-containing alkyl polyoxyethylene ether, C
6-12Alkylphenol polyoxyethylene, C
8-20Fatty acid polyglycol ester, sorbitol polyoxyethylene ether C
10-20The polydimethylsiloxane of fatty acid ester and polyoxyethylene modification.
8. water-proof emulsion composition as claimed in claim 1 is characterized in that described anion surfactant is selected from soap type, sulfonate type, sulfate type, phosphate ester salt type and sulfosuccinic ester type anion surfactant.
9. water-proof emulsion composition as claimed in claim 8 is characterized in that described anion surfactant is selected from sodium laurate, sodium stearate, Sodium dodecylbenzene sulfonate, sodium laurylsulfonate, sulfo-succinic acid diisobutyl ester sodium.
10. the application of water-proof emulsion composition as claimed in claim 1 aspect building waterproof.
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|---|---|---|---|
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| CN108083847A (en) * | 2017-12-10 | 2018-05-29 | 上饶师范学院 | A kind of organic silicon infiltration waterproofing agent |
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| 水乳型有机硅系表面处理剂的性能. 黄月文，刘伟区.涂料技术与文摘，第1期. 2003 |
| 水乳型有机硅系表面处理剂的性能. 黄月文，刘伟区.涂料技术与文摘，第1期. 2003 * |
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