CN105273652A - Isocyanate bridging agent-containing reactive asphalt waterproofing sealant and preparation method thereof - Google Patents
Isocyanate bridging agent-containing reactive asphalt waterproofing sealant and preparation method thereof Download PDFInfo
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- CN105273652A CN105273652A CN201410330401.3A CN201410330401A CN105273652A CN 105273652 A CN105273652 A CN 105273652A CN 201410330401 A CN201410330401 A CN 201410330401A CN 105273652 A CN105273652 A CN 105273652A
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- thickening material
- bridging agent
- emulsified bitumen
- sealing compound
- asphalt waterproofing
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Abstract
The invention aims at providing an isocyanate bridging agent-containing reactive modified asphalt waterproofing sealant and a preparation method thereof. The waterproofing sealant comprises emulsified asphalt and a bridging agent. The bridging agent is added to a formula system, the bridging agent makes asphalt and uncured cement or concrete in the waterproofing sealant form chemical crosslinking and physical bonding synergism in order to tightly combine the sealant with cement into one body, associated positions have chemical bonds and have an irreversible bonding effect after curing, and the waterproofing sealant can infiltrate into cement gel and concrete capillary pores in a peristaltic manner in the cement solidification process in order to realize a tight, firm and irreversible combination bone-and-flesh-like bonding effect.
Description
Technical field
The present invention relates to a kind of water-tight field, particularly relate to a kind of response type asphalt waterproofing sealing compound containing isocyanic ester bridging agent and preparation method thereof.
Background technology
At present, differ greatly at PPR or the PVC supplying drainage at building kitchen and toilet passing through floors position and the linear expansivity of concrete floor, under normal temperature, concrete is 1*10
-5/ DEG C, PPR or PVC are (6 ~ 7) * 10
-5/ DEG C, after seasonal cold and hot freeze-thaw cycle several times, supplying drainage and concrete floor junction are easy to occur gap, therefore, during the construction of building kitchen and toilet water supply and sewerage pipeline, when passing through floors position PPR or the construction of PVC supplying drainage, need to carry out water-tight process.Existing water-tight treatment technology has following several modes:
Modifying asphalt encapsulation process, adopt modifying asphalt to build after hot melt under optimal temperature, complicated operation during this construction technology, temperature controls with coating process very crucial.First, when hot-melt asphalt, temperature control is just right, if temperature is too high, pitch mobility is excessively good, and pitch can be made cannot to adhere to on PPR or PVC, cannot realize sealing, and when temperature is more than 100 DEG C, easily damage; If temperature is too low, pitch and PPR or PVC and concrete adhesion property all can not reach requirement.Second is that when constructing, gimmick wants exactissima diligentia, coating is very even, often to carry out for several times above coating repeatedly, this is because modifying asphalt and PPR or PVC and concrete adhesiving effect not ideal enough, only have and made up by gimmick of constructing.
The process of asphalt mixture sealing compound, what utilize unfilled bitumen, fibre object and solvent is mixed with into sealing compound, and sealing cream becomes the character of viscous liquid state under having normal temperature, and the envelope that can be directly used in cement and pipeline junction is coated with, such as U.S. Henry company
patch
tMthe roof leakage maintenance product of plate.Such sealing compound, but such sealing compound has used the organic solvent of low volatility as solvent, and time of drying is slow, often needs the time of fortnight more than could drying, and when basal plane humidity, because cannot adhere to basal plane, and can not construct; And because main component is pitch and fibre object composition, after drying, sealing ply does not have elasticity, and intensity is poor, inadequate durable.
Polyurethane sealant, take urethane as main component, can directly use at normal temperatures, shortcoming be with PPR or PVC and concrete adhesiving effect not ideal enough, and cannot to construct when basal plane is moist.
Silicone sealant, with water glass and the material such as organosilicon, silicone structure polymkeric substance for main component, with PPR or PVC and concrete adhesiving effect better, but its poor stability, can not be lasting under solar radiation or dampness, easily come off, intensity is also poor, can not meet construction requirement.
Polyacrylic resin sealing compound take crylic acid resin as main component, and its preparation technology's more complicated, needs the modification carrying out high request, be prepared into water-borne acrylic resin, be then prepared into emulsion.Polyacrylic resin sealing compound can be constructed on moisture substrate, but itself and PPR or PVC and concrete adhesiving effect poor.
In sum, also there is many deficiencies in encapsulation process technology when PPR or the PVC supplying drainage of prior art at passing through floors position is constructed, and is badly in need of finding a kind of preparation technology simple, easy construction, water-tight performance is good, and intensity is high, long-lived new waterproof sealing prod.
Summary of the invention
The present invention aims to provide a kind of response type asphalt waterproofing sealing compound containing isocyanic ester bridging agent and preparation method thereof, and this waterproof sealing cream preparation technology is simple, and easy construction, water-tight performance is good, and intensity is high, durable in use.
Waterproof sealing cream of the present invention is prepared from by the raw material comprising following parts by weight:
Emulsified bitumen 5 ~ 190;
Bridging agent 0.1 ~ 5;
Thickening material 0.1 ~ 3;
The solid content of described emulsified bitumen is 10%-80%;
Described bridging agent is isocynate silane, the hydroxy combining in one end of isocynate silane and pitch, and the acid group that the other end produces after hydrated cementitious is combined, and erects the waterproof bridge of a water-proof material;
Its general formula is as follows:
Wherein,
X is Cl ,-OC
nh
2n+1or CH
3;
N is the natural numerical value between 1-10.
Described emulsified bitumen is cationic emulsified bitumen, non ionic emulsified bitumen or anionic emulsified bitumen.
Described emulsified bitumen is one or more the mixture in SBS modified emulsifying asphalt, styrene-butadiene rubber(SBR) modified emulsifying asphalt or chloroprene rubber modified emulsifying asphalt.
The petroleum pitch that buildings waterproof field adopts, the form mostly being mixture exists, and therefore, above-mentioned various petroleum pitch emulsion any ratio can carry out mixing utilization.
Described bridging agent is all consistent with concrete reaction mechanism, and between each bridging agent, its chemical property is also similar, therefore can any ratio used in combination.
Described thickening material is the mixture of the one or more than one in ether of cellulose and derivative thereof, alkali swelling type thickening material, polyurethane thickener, the non-polyurethane thickener of hydrophobically modified, inorganic thickening agent, solvay-type organometallic compound class thickening material, polyacrylamide, sodium polyacrylate, Xylo-Mucine, sodium alginate.
Described ether of cellulose and derivative thereof comprise Natvosol, methyl hydroxyethylcellulose, Type 3U, methylhydroxypropylcellulose, methylcellulose gum, hydrophobically modified Mierocrystalline cellulose, xanthan gum, guar gum.
Described alkali swelling type thickening material comprises non-association type polyacrylic acid saline and alkaline swelling type emulsion, the saline and alkaline swelling type emulsion of association type polyacrylic acid.
Described polyurethane thickener and the non-polyurethane thickener of hydrophobically modified comprise anionic associative polyurethane thickening material, cationic associative polyurethane thickening material, non-ionic type associative polyurethane thickening material, hydrophobically modified amino thickening material, hydrophobically modified polyethers thickening material, hydrophobically modified polyurea thickener.
Described inorganic thickening agent comprises wilkinite, attapulgite, aerosil.
Described bridging agent is for comprising γ-isocyanate group propyl trimethoxy silicane, γ-isocyanate group propyl-triethoxysilicane.
Described waterproof sealing cream, its production method comprises the following steps: emulsified bitumen, bridging agent are injected in still, after stirring, added by thickening material in still, mixing and stirring.
Bridging agent is added in formula system of the present invention, i.e. bridging agent, this composition serves vital effect for lift-off seal lotion system to concrete bonding force, is one of core technology in the present invention, and contriver have passed through a large amount of screening experiments and determines these bridging agent compositions.Its principle is as follows: the isocyanate group in bridging agent is in reactor blending process, because temperature reaches reaction conditions, and meeting and pitch generation crosslinking reaction; Simultaneously because concrete has building stones and the blended solidification of cement to form, generate hydrated calcium silicate (C-S-H gel) and calcium hydroxide after hydrated cementitious, surface is containing a large amount of active Si-OH groups and electronegatively contain oxygen mineral compound.Its reaction mechanism is as follows:
1, react with pitch
Wherein
R-OH represents the compound containing hydroxyl in pitch.
2, react with concrete
1. water at normal temperature mud generation hydration reaction generates hydrated calcium silicate (C-S-H gel) and Ca (OH)
2, there is Si-OH group in CSH gel, reaction formula: 3CaOSiO
2+ nH
2o=xCaSiO
2yH
2o+ (3-x) Ca (OH)
2
2. the active group in glue-line meets water hydrolysis:
3. hydrolysis generates Si-OH radical reaction in Si-OH group and CSH gel and generates ehter bond, makes hydrated calcium silicate gel and coiled material surface generate chemical bond and secure bond.React as follows:
The mechanism that one end and aluminic acid cement, sulphur aluminic acid cement or the iron aluminic acid cement of described isocynate silane react also is the same.Hydroxy combining in one end of described isocynate silane and pitch, the acid group that the other end produces after hydrated cementitious is combined.The acid group produced after described hydrated cementitious is silicate, aluminate, sulphur aluminate or iron aluminate.That is, above-described isocynate silane tar cement waterproof bridging agent, structural formula one end of this bridging agent can couple together with the hydroxyl in pitch, form good chemical affinity, and the other end of silane is in the concrete adding water and cement, produce the chemical bond of aquation, carry out with concrete that chemically crosslinked and physics mortise and tenon are collaborative to bond, pitch and cement are closely coupled as one, there is chemical bond in region of interest, irreversible cohesive action is played after solidification, waterproof sealing cream can be made, its oil-proofness and flexible resistance are given prominence to, and it is nontoxic, safety and environmental protection, pollution-free, at cement, can wriggle in the process of concrete setting and penetrate in cement gel and concrete pore, reach and combine closely, firmly, irreversible as closely linked as flesh and blood bond effect.Want to take away or peel off waterproof layer, be difficult to accomplish.
Isocynate silane bridging agent of the present invention, at the coupling compound with the hydroxyl in cement gel, ehter bond and silicon-dioxide, can not cause the infringement to reinforcing bar.
The present invention has used the bridging agent that simultaneously can react with pitch and concrete, and traditional product compared by the waterproof sealing cream made, and has better Concrete Bond Strength and peel strength.
Relatively large thickening material is adopted in formula system of the present invention, the main purpose of utilization thickening material is the viscosity in order to increase emulsified bitumen waterproof sealing lotion system, make emulsified bitumen waterproof sealing cream can be used in pipe root, wall and do not occur the phenomenons such as downslide, sagging, realize the good sealing of PPR or PVC supplying drainage and concrete floor junction.
Embodiment
Embodiment 1
Emulsified bitumen 10kg;
Bridging agent 0.1kg;
Thickening material 0.1kg;
Described emulsified bitumen is SBS modified rubber emulsified bitumen;
Described bridging agent is γ-isocyanate group propyl trimethoxy silicane.
Described thickening material is ether of cellulose and derivative thereof, is specially methylhydroxypropylcellulose;
The solid content of described emulsified bitumen is 60%;
Emulsified bitumen, bridging agent are injected in still, after stirring, thickening material is added in still, mixing and stirring.
Embodiment 2
Emulsified bitumen 190kg;
Bridging agent 1.0kg;
Thickening material 3kg;
Described emulsified bitumen is neoprene latex modified emulsifying asphalt;
Described bridging agent is γ-isocyanate group propyl-triethoxysilicane;
Described thickening material is polyurethane thickener, is specially cationic associative polyurethane thickening material;
The solid content of described emulsified bitumen is 10%;
Emulsified bitumen, bridging agent are injected in still, after stirring, thickening material is added in still, mixing and stirring.
Embodiment 3
Emulsified bitumen 65kg;
Bridging agent 1.5kg;
Thickening material 1.3kg;
Described emulsified bitumen is chloroprene rubber modified emulsifying asphalt;
Described bridging agent is γ-isocyanate group propyl trimethoxy silicane;
Described thickening material is alkali swelling type thickening material, is specially the saline and alkaline swelling type emulsion of non-association type polyacrylic acid;
The solid content of described emulsified bitumen is 20%;
Emulsified bitumen, bridging agent are injected in still, after stirring, thickening material is added in still, mixing and stirring.
Embodiment 4
Emulsified bitumen 30kg;
Bridging agent 0.7kg;
Thickening material 0.3kg;
Described emulsified bitumen is the mixture of SBS modified emulsifying asphalt and styrene-butadiene rubber(SBR) modified emulsifying asphalt;
Described bridging agent is γ-isocyanate group propyl-triethoxysilicane;
Described thickening material is ether of cellulose and derivative thereof, is specially Natvosol;
The solid content of described emulsified bitumen is 30%;
Emulsified bitumen, bridging agent are injected in still, after stirring, thickening material is added in still, mixing and stirring.
Embodiment 5
Emulsified bitumen 53kg;
Bridging agent 1.2kg;
Thickening material 1kg;
Described emulsified bitumen is APP modified emulsifying asphalt;
Described bridging agent is the mixture of γ-isocyanate group propyl trimethoxy silicane, γ-isocyanate group propyl-triethoxysilicane;
Described thickening material is ether of cellulose and derivative thereof, is specially the mixture of Type 3U and guar gum.
The solid content of described emulsified bitumen is 40%;
Emulsified bitumen, bridging agent are injected in still, after stirring, thickening material is added in still, mixing and stirring.
Embodiment 6
Emulsified bitumen 150kg;
Bridging agent 3kg;
Thickening material 3kg;
Described emulsified bitumen is isoprene-isobutylene rubber modifying asphalt latex;
Described bridging agent γ-isocyanate group propyl trimethoxy silicane, the mixture of γ-isocyanate group propyl-triethoxysilicane;
Described thickening material is alkali swelling type thickening material, is specially the mixture of non-association type polyacrylic acid saline and alkaline swelling type emulsion and the saline and alkaline swelling type emulsion of association type polyacrylic acid;
The solid content of described emulsified bitumen is 50%;
Emulsified bitumen, bridging agent are injected in still, after stirring, thickening material is added in still, mixing and stirring.
Embodiment 7
Emulsified bitumen 95kg;
Bridging agent 0.8kg;
Thickening material 0.9kg;
Described emulsified bitumen is SBR modified emulsifying asphalt;
Described bridging agent is the mixture of γ-isocyanate group propyl trimethoxy silicane, γ-isocyanate group propyl-triethoxysilicane.
Described thickening material is polyurethane thickener, is specially non-ionic type associative polyurethane thickening material, the amino thickening material of hydrophobically modified;
The solid content of described emulsified bitumen is 60%;
Emulsified bitumen, bridging agent are injected in still, after stirring, thickening material is added in still, mixing and stirring.
Embodiment 8
Emulsified bitumen 138kg;
Bridging agent 1.7kg;
Thickening material 1.2kg
Described emulsified bitumen is the mixture of APP modified emulsifying asphalt and SBS modified rubber emulsified bitumen;
Described bridging agent is the mixture of γ-isocyanate group propyl trimethoxy silicane, γ-isocyanate group propyl-triethoxysilicane;
Described thickening material is hydrophobically modified polyethers thickening material;
The solid content of described emulsified bitumen is 70%;
Emulsified bitumen, bridging agent are injected in still, after stirring, thickening material is added in still, mixing and stirring.
Embodiment 9
Emulsified bitumen 10kg;
Bridging agent 5kg;
Thickening material 3kg;
Described emulsified bitumen is chloroprene rubber modified emulsifying asphalt;
Described bridging agent is the mixture of γ-isocyanate group propyl trimethoxy silicane, γ-isocyanate group propyl-triethoxysilicane;
Described thickening material is solvay-type organometallic compound class thickening material;
The solid content of described emulsified bitumen is 80%;
Emulsified bitumen, bridging agent are injected in still, after stirring, thickening material is added in still, mixing and stirring.
Embodiment 10
Emulsified bitumen 119kg;
Bridging agent 2.2kg;
Thickening material 1.6kg;
Described emulsified bitumen is SBS modified emulsifying asphalt;
Described bridging agent is γ-isocyanate group propyl trimethoxy silicane;
Described thickening material is sodium polyacrylate;
The solid content of described emulsified bitumen is 65%;
Emulsified bitumen, bridging agent are injected in still, after stirring, thickening material is added in still, mixing and stirring.
Embodiment 11
Emulsified bitumen 75kg;
Bridging agent 2.7kg;
Thickening material 1.1kg;
Described emulsified bitumen is SBS modified emulsifying asphalt;
Described bridging agent is the mixture of γ-isocyanate group propyl trimethoxy silicane, γ-isocyanate group propyl-triethoxysilicane;
Described thickening material is gaseous silicon oxide;
The solid content of described emulsified bitumen is 75%;
Emulsified bitumen, bridging agent are injected in still, after stirring, thickening material is added in still, mixing and stirring.
Embodiment 12
The present invention introduces the bridging agent containing two kinds of different chemical active groups, wherein a kind of group can with cement basal plane generation chemically crosslinked effect, another group can be combined with pitch and rubber and form fine and close spacial framework, the synergy of final physical mortise and tenon and chemically crosslinked, water-proof material is enable to be closely integrated into Unified Global with cement or concrete surface, effectively overcome traditional diadactic structure bonding insecure, cold and heat succeed each other, under drying and watering cycle condition easily and the defect peeled off of basal plane, the water resistance of water-proof material is significantly improved.Meanwhile, waterproof sealing cream of the present invention is water-based, therefore can construct at the basal plane of humidity, convenient to use.
Product performance
Can be there is chemically crosslinked effect again owing to can produce physics mortise and tenon with basal plane in product, be therefore the performance innovative point of this product with the adhesive effect of basal plane excellence.Comparative test result is in table 1:
Table 1
Embodiment 13
After part bridging agent adds sealing compound system, concrete waterproof parameter comparison, the results are shown in Table 2:
Table 2
Under equal addition prerequisite, basically identical to material and cement basal plane cohesive strength, shows that the bridging agent added also has same effect in bonding.And at performance of watertightness, low-temperature performance, anti-channeling water aspect of performance increases, especially low temperature flexibility and anti-channeling water sex expression more outstanding.Through experimental verification, the water-fast persistence of material after adding new bridging agent, can be improved.Because after adding New function auxiliary agent, become after sealing compound is shaping and solid there is elastic sealing ply, and sealing ply inside is rubbery state, can effective the entering or permeate of block water molecule, and there is hydrophobicity performance, therefore more excellent at waterproof and anti-channeling water aspect of performance.
Claims (10)
1. a response type asphalt waterproofing sealing compound, is characterized in that being, is to be prepared from by the raw material comprising following parts by weight:
Emulsified bitumen 5 ~ 190;
Bridging agent 0.1 ~ 5;
Thickening material 0.1 ~ 3;
The solid content of described emulsified bitumen is 10%-80%;
Described bridging agent is isocynate silane, the hydroxy combining in one end of isocynate silane and pitch, and the acid group that the other end produces after hydrated cementitious is combined, and erects the waterproof bridge of a water-proof material;
Its general formula is as follows:
Wherein,
X is Cl ,-OC
nh
2n+1or CH
3;
N is the natural numerical value between 1-10.
2. response type asphalt waterproofing sealing compound according to claim 1, is characterized in that: described emulsified bitumen is cationic emulsified bitumen, non ionic emulsified bitumen or anionic emulsified bitumen.
3. response type asphalt waterproofing sealing compound according to claim 1, is characterized in that: described emulsified bitumen is one or more the mixture in SBS modified emulsifying asphalt, styrene-butadiene rubber(SBR) modified emulsifying asphalt or chloroprene rubber modified emulsifying asphalt.
4. response type asphalt waterproofing sealing compound according to claim 1, is characterized in that: described thickening material is the mixture of the one or more than one in ether of cellulose and derivative thereof, alkali swelling type thickening material, polyurethane thickener, the non-polyurethane thickener of hydrophobically modified, inorganic thickening agent, solvay-type organometallic compound class thickening material, polyacrylamide, sodium polyacrylate, Xylo-Mucine, sodium alginate.
5. response type asphalt waterproofing sealing compound according to claim 4, is characterized in that: described ether of cellulose and derivative thereof comprise Natvosol, methyl hydroxyethylcellulose, Type 3U, methylhydroxypropylcellulose, methylcellulose gum, hydrophobically modified Mierocrystalline cellulose, xanthan gum, guar gum.
6. response type asphalt waterproofing sealing compound according to claim 4, is characterized in that: described alkali swelling type thickening material comprises non-association type polyacrylic acid saline and alkaline swelling type emulsion, the saline and alkaline swelling type emulsion of association type polyacrylic acid.
7. response type asphalt waterproofing sealing compound according to claim 4, is characterized in that: described polyurethane thickener and the non-polyurethane thickener of hydrophobically modified comprise anionic associative polyurethane thickening material, cationic associative polyurethane thickening material, non-ionic type associative polyurethane thickening material, hydrophobically modified amino thickening material, hydrophobically modified polyethers thickening material, hydrophobically modified polyurea thickener.
8. response type asphalt waterproofing sealing compound according to claim 4, is characterized in that: described inorganic thickening agent comprises wilkinite, attapulgite, aerosil.
9. response type asphalt waterproofing sealing compound according to claim 1, is characterized in that:
Described bridging agent comprises γ-isocyanate group propyl trimethoxy silicane, γ-isocyanate group propyl-triethoxysilicane.
10. according to the response type asphalt waterproofing sealing compound of claim 1-9 described in any one, it is characterized in that, its production method comprises the following steps: emulsified bitumen, bridging agent are injected in still, after stirring, added by thickening material in still, mixing and stirring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410330401.3A CN105273652A (en) | 2014-07-12 | 2014-07-12 | Isocyanate bridging agent-containing reactive asphalt waterproofing sealant and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410330401.3A CN105273652A (en) | 2014-07-12 | 2014-07-12 | Isocyanate bridging agent-containing reactive asphalt waterproofing sealant and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN105273652A true CN105273652A (en) | 2016-01-27 |
Family
ID=55143508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410330401.3A Pending CN105273652A (en) | 2014-07-12 | 2014-07-12 | Isocyanate bridging agent-containing reactive asphalt waterproofing sealant and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110003851A (en) * | 2019-04-03 | 2019-07-12 | 辽宁新发展公路科技养护有限公司 | A kind of road engineering modified emulsified bitumen for tie coat and preparation method thereof |
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| CN101426749A (en) * | 2006-04-21 | 2009-05-06 | 路博润高级材料公司 | Elastomeric emulsion polymers for masonry coatings |
| JP2012251040A (en) * | 2011-06-01 | 2012-12-20 | Asahi Kasei Chemicals Corp | Asphalt composition |
| CN103304862A (en) * | 2013-07-03 | 2013-09-18 | 广西金雨伞防水科技有限公司 | Waterproof sealing paste producing chemical crosslinking and physical mortising with cement |
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2014
- 2014-07-12 CN CN201410330401.3A patent/CN105273652A/en active Pending
Patent Citations (3)
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| CN101426749A (en) * | 2006-04-21 | 2009-05-06 | 路博润高级材料公司 | Elastomeric emulsion polymers for masonry coatings |
| JP2012251040A (en) * | 2011-06-01 | 2012-12-20 | Asahi Kasei Chemicals Corp | Asphalt composition |
| CN103304862A (en) * | 2013-07-03 | 2013-09-18 | 广西金雨伞防水科技有限公司 | Waterproof sealing paste producing chemical crosslinking and physical mortising with cement |
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| CN110003851A (en) * | 2019-04-03 | 2019-07-12 | 辽宁新发展公路科技养护有限公司 | A kind of road engineering modified emulsified bitumen for tie coat and preparation method thereof |
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