CN115772368A - Hot-bonding modified asphalt waterproof coating and preparation method and application thereof - Google Patents
Hot-bonding modified asphalt waterproof coating and preparation method and application thereof Download PDFInfo
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- CN115772368A CN115772368A CN202211510463.3A CN202211510463A CN115772368A CN 115772368 A CN115772368 A CN 115772368A CN 202211510463 A CN202211510463 A CN 202211510463A CN 115772368 A CN115772368 A CN 115772368A
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Abstract
The invention provides a hot-bonding modified asphalt waterproof coating, a preparation method thereof and application thereof in a concrete pavement and bridge deck waterproof system. The hot-bonding modified asphalt waterproof coating is solid at normal temperature and comprises the following components in percentage by mass: 40-55% of asphalt, 5-15% of modifier, 11-19% of adhesive, 1-6% of bonding compensation agent, 12-21% of softening agent, 1-5% of plasticizer and 3-8% of filler. The working temperature of the asphalt waterproof coating is lower than 160 ℃, and smoke is not generated; the waterproof material has excellent impermeability, low-temperature flexibility (-30 ℃) and fatigue resistance, and also has higher elongation at break and bonding strength, is fully bonded with a base surface and a coiled material, is not cured for a long time, ensures reliable bonding of the lap joint of the coiled material, and improves the reliability and durability of a waterproof system.
Description
Technical Field
The invention belongs to the technical field of polymers, and particularly relates to a hot-bonding modified asphalt waterproof coating for a waterproof system of a concrete pavement or a bridge deck and a preparation method thereof.
Background
The deck waterproofing system of concrete pavements, especially concrete bridges (including highway bridges and railway bridges), is an important technical means for improving the structural durability. The waterproof system of the concrete road generally adopts the steps of firstly paving a hot-melt modified asphalt waterproof coil material layer on a concrete base layer, and then pouring concrete or asphalt with a certain thickness as a protective layer. The deck waterproofing performance depends on whether the coil is capable of fully bonding to the base and whether there is a strong overlap between the coils, with no gaps. When laying the hot-melt modified asphalt waterproof coiled material, firstly arranging the coiled material, cutting according to the accurate size, rewinding each coil from the end to the middle, melting the isolation film by flame, immediately rolling forwards to lay the coil so as to completely bond the coil on the base layer, and then repeatedly making the other half of the coil. Subsequent webs are staggered where the ends overlap. The laying process causes more lap joints of the coiled materials and has relatively low reliability; and the edge sealing effect of the waterproof wall, the drain hole and other parts is not easy to ensure. Meanwhile, the open fire baking process has certain potential safety hazard and is easy to cause environmental pollution.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a hot-bonding modified asphalt waterproof coating. The asphalt waterproof coating is solid at room temperature and is convenient to store and transport. The asphalt waterproof coating and the modified asphalt waterproof coiled material on the asphalt waterproof coating replace the traditional hot-melt modified asphalt waterproof coiled material, and open fire is not needed in a construction site; the solid asphalt waterproof coating in the prior art needs to be heated to over 180 ℃ during construction, and the heating temperature of the asphalt waterproof coating is not higher than 160 ℃ during construction. Therefore, the asphalt waterproof coating does not generate smoke during construction. The asphalt waterproof coating has excellent impermeability, low-temperature flexibility (-30 ℃) and fatigue resistance, also has higher elongation at break and bonding strength, is fully bonded with a base surface and a coiled material, is not cured for a long time, ensures reliable bonding of the lap joint of the coiled material, and improves the reliability and durability of a waterproof system.
In order to achieve the technical effects, the invention adopts the following technical scheme:
the hot-bonding modified asphalt waterproof coating is solid at normal temperature and comprises the following components in percentage by mass:
40-55% of asphalt, 5-15% of modifier, 11-19% of adhesive, 1-6% of adhesion compensator, 12-21% of softener, 1-5% of plasticizer and 3-8% of filler;
wherein the modifier is selected from one or more of flexible epoxy resin, polyisocyanate, chloroprene rubber, waste rubber powder, polyethylene resin, polypropylene resin, phenolic resin, SBR, SBS, polyethylene terephthalate (PET), ethylene-vinyl acetate (EVA) and coumarone resin;
the adhesive is selected from one or more of rosin resin, terpene resin, petroleum resin, medium molecular weight polyisobutylene with viscosity average molecular weight of 35000-55000, T612 viscosity index improver, T613 viscosity index improver and T614 viscosity index improver;
the softener is selected from one or more of turpentine, chlorinated paraffin, white oil, reduced-trilinear furfural extract oil, naphthenic oil and vegetable oil;
the plasticizer is selected from one or more of cobalt naphthenate, diisobutyl cyclohexanedicarboxylate (DIBCH), trioctyl trimellitate (TOTM), environmentally-friendly n-tributyl citrate (TBC), dioctyl phthalate (DOP) and dioctyl adipate (DOA);
the bonding compensation agent is selected from one or more of alicyclic epoxy silane SCA-E86E, bis (acetylacetone) diisopropyl titanate, 3-aminopropyl triethoxysilane and diisopropoxyl acetoacetate oleate aluminate;
the filler is selected from one or more of talcum powder, light calcium carbonate and mica powder.
Preferably, the asphalt is selected from one or two of heavy traffic road petroleum asphalt 70# and 90 #.
More preferably, the bitumen penetration (25 ℃, 100g,5s, 0.1mm) is from 60 to 100 and the softening point is from 45 to 55 ℃.
Preferably, the modifier is selected from one or more of flexible epoxy resins, neoprene, polypropylene resins, phenolic resins, SBR, SBS, ethylene Vinyl Acetate (EVA) and coumarone resins.
Preferably, the adhesive is selected from one or two of medium molecular weight polyisobutylene with viscosity average molecular weight of 35000-55000 and T612 viscosity index improver.
Preferably, the softening agent is selected from one or two of naphthenic oil and white oil.
Preferably, the plasticizer is selected from one or both of dioctyl phthalate and diisobutyl cyclohexanedicarboxylate.
Preferably, the bonding compensation agent is selected from one or two of alicyclic epoxy silane SCA-E86 and diisopropoxy acetoacetic acid oleoyl aluminate.
Preferably, the filler is selected from one or both of light calcium carbonate and talc.
The invention also aims to provide a preparation method of the hot-melt modified asphalt coating, which comprises the following steps:
a) Preparing the components according to the mixture ratio;
b) Putting the asphalt into a constant-temperature oven at 120-140 ℃, heating to a flowing state, and continuously preserving heat for at least more than 2 hours;
c) Weighing the asphalt in the flowing state obtained in the step b), transferring the asphalt into a container with a heat preservation and stirring device, slowly adding a modifier, a softener and a plasticizer, stirring at a low speed for 1-2 h at 140-160 ℃, keeping the temperature unchanged, and continuously shearing for 1-2 h by using a high-speed shearing machine;
d) Adding the adhesive, the filler and the adhesive compensation agent into the mixed system obtained in the step c), keeping the temperature unchanged, continuously using a high-speed shearing machine, continuously shearing for 1-2 h, cooling, cutting into blocks, sealing, insulating and storing to obtain the adhesive.
Preferably, in the step c), the rotation speed of the low-speed stirring is 50-200 r/min.
Preferably, in said steps c) and d), the high shear rate is 1000 to 2000rpm.
The third purpose of the invention is to provide the application of the hot-melt modified asphalt coating or the hot-melt modified asphalt coating prepared by the preparation method in a concrete pavement and bridge deck waterproof system, which comprises the following steps:
I. heating the hot-sticking modified asphalt waterproof coating to a flowing state, wherein the heating temperature is 150-160 ℃, and the discharging temperature is 150-160 ℃;
II, spraying or blade-coating the hot-bonding modified asphalt waterproof coating in the flowing state on the upper surface of a concrete base layer and the lower surface of a modified asphalt waterproof coiled material, immediately paving and pasting the modified asphalt waterproof coiled material on the concrete base layer, and rolling and pressing the edges for exhausting while spraying and pasting so as to achieve the full-bonding effect; the thickness of the hot-sticking modified asphalt waterproof coating on the concrete base layer is 0.8-1.5 mm.
The hot-melt modified asphalt waterproof coating provided by the invention has the synergistic effect of all components. Wherein:
the adhesive improves the combination degree of the asphalt and the modifier, increases the adhesive force of the hot-adhesion modified asphalt waterproof coating and the coiled materials and the base surface, and improves the extensibility of the materials.
The softener is used for dissolving the modifier, so that the chain segments of the modifier are fully opened, and the fusion with the asphalt is promoted.
The plasticizer is an asphalt additive, and can effectively improve the flexibility and the stretchability of the material and improve the impact resistance while improving the low-temperature resistance and the high-temperature viscosity of the asphalt. In addition, the plasticizer also has a certain improvement effect on the temperature sensitivity of the asphalt.
The bonding compensation agent further improves the interface bonding force of the material, the waterproof roll and the concrete base surface, and guarantees the integrity and the water permeability resistance of the composite waterproof system.
The filler further improves the high temperature resistance of the material, absorbs small molecule oil substances and reduces the oil permeability of the material.
In a word, the hot-melt modified asphalt waterproof coating provided by the invention has the solid content of more than or equal to 98%, the hot-melt temperature of less than 160 ℃, and no smoke is generated in the heating process. The hot-melt modified asphalt waterproof coating and the modified asphalt waterproof coiled material of the invention replace the traditional hot-melt asphalt waterproof coiled material, can realize open fire-free construction, and has no smoke emission in the construction. The hot-sticking modified asphalt waterproof coating can fully coat and level the rough base surface of the concrete below the hot-sticking modified asphalt waterproof coating, fully stick and penetrate the waterproof coiled material above the hot-sticking modified asphalt waterproof coating, and ensure that a composite waterproof system has good adhesiveness, tightness, weather resistance, extensibility and crack following property.
Detailed Description
The invention is illustrated below with reference to specific examples. It will be understood by those skilled in the art that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention in any way.
The experimental procedures in the following examples are conventional unless otherwise specified. The raw materials, reagent materials and the like used in the following examples are all commercially available products unless otherwise specified. Wherein, the purchase condition of part raw materials is as follows: .
Alicyclic epoxy silane SCA-E86E, diisopropoxy acetoacetic acid oleate aluminate: purchased from Nanjing England New Material technology, inc.;
flexible epoxy YP-50: purchased from Wuhan Yipeng materials science and technology, inc.;
SBR1502: china oil and gas company;
SBS2336: guangzhou Xinnuo New Material science and technology, inc.;
polypropylene resin GM750E: ningbo ultra-flourishing New materials, inc.;
tert-butyl phenol-aldehyde resin 2402: shandong Mao chemical Co., ltd;
chloroprene rubber SN244X: guangzhou city, qianyuan synthetic materials science and technology, inc.;
ethylene-vinyl acetate: shandong Kejian chemical Co., ltd;
HRD550 medium molecular weight polyisobutylene: viscosity average molecular weight 35000-55000, and is available from commercial GmbH, jinxin, jinan;
coumarone resin: shandong Xiang Showa New Material Co., ltd.
The hot-tack modified asphalt waterproofing coatings of the following examples and comparative examples were prepared by the following steps:
a) Preparing the components according to the mixture ratio;
b) Putting the asphalt into a constant-temperature oven at 120-140 ℃, heating to a flowing state, and continuously preserving heat for at least more than 2 hours;
c) Weighing the asphalt in a flowing state obtained in the step b), transferring the asphalt into a container with a heat preservation and stirring device, slowly adding a modifier, a softener and a plasticizer, stirring at 50-200rpm at 140-160 ℃ for 1-2 h, keeping the temperature unchanged, and continuously shearing at 1000-2000 rpm for 1-2 h by using a high-speed shearing machine;
d) Adding the adhesive, the filler and the adhesive compensator into the mixed system obtained in the step c), keeping the temperature unchanged, continuously using a high-speed shearing machine, continuously shearing at the shearing rate of 1000-2000 rpm for 1-2 h, cooling, cutting into blocks, sealing, insulating and storing to obtain the adhesive.
The specific construction steps of the hot-bonding modified asphalt waterproof coating applied to the waterproof system of the following examples and comparative examples are as follows:
I. heating the hot-sticking modified asphalt waterproof coating to a flowing state, wherein the heating temperature is 150-160 ℃, and the discharging temperature is 150-160 ℃;
II, spraying or blade-coating the hot-bonding modified asphalt waterproof coating in the flowing state on the upper surface of a concrete base layer and the lower surface of a modified asphalt waterproof coiled material, immediately paving and pasting the modified asphalt waterproof coiled material on the concrete base layer, and rolling and pressing the edges for exhausting while spraying and pasting so as to achieve the full-bonding effect; the thickness of the hot-sticking modified asphalt waterproof coating on the concrete base layer is 0.8-1.5 mm.
Example 1 to 7A Hot tack modified asphalt waterproofing paint
The raw material ratios of the thermal bonding modified asphalt waterproof coatings of examples 1 to 7 are shown in table 1, and the thermal bonding modified asphalt waterproof coatings are prepared and constructed according to the methods. The physical and mechanical properties are shown in Table 2.
Comparative examples 1 to 3A thermal adhesion modified asphalt waterproofing paint
The raw material ratios of the thermal bonding modified asphalt waterproof coatings of comparative examples 1 to 3 are shown in table 3, and the thermal bonding modified asphalt waterproof coatings are prepared and constructed according to the methods. The physical and mechanical properties are shown in Table 4.
TABLE 1 formulation table (unit: kg) of the hot tack modified asphalt waterproofing coatings of examples 1 to 7
Table 2 tables of physical and mechanical properties of examples 1 to 7
TABLE 3 formulation table (unit: kg) of hot tack modified asphalt waterproofing paint of comparative examples 1. About.
TABLE 4 physical and mechanical Properties of the Hot melt modified asphalt coatings of comparative examples 1 to
In the embodiments 1-7 of the invention, the water impermeability, low-temperature flexibility and elongation at break of the material are greatly improved by compounding the resin and the rubber with the modified asphalt and the plasticizer, and the elongation at break reaches more than 650%; the cohesive force of the material, the bonding strength with coiled materials and the bonding strength with concrete are greatly improved through the adhesive and the bonding compensation agent, particularly, the aluminate coupling agent reacts with the surface of the filler or a substrate through protonation reaction, the surface of the filler does not need to have hydroxyl, prehydrolysis or residual moisture on the surface of the filler, and the aluminate coupling agent has better bonding force with asphalt and a modifier.
Compared with the comparative example 1, the amount of the filler is less and only 1 percent, and the heat resistance and the low temperature resistance of the coating are greatly reduced; the amount of the filler in comparative example 2 is large, up to 15%, which affects the elongation at break and the bonding strength of the coating; in the comparative example 3, the dosage of the bonding compensation agent is 0.1 percent, and the bonding strength and the impermeability of the coating are lower; in comparative example 4, the amount of asphalt was only 30%, the high temperature resistance and low temperature resistance of the coating were poor, the elongation at break was small, and the ductility of the coating was poor, which was shown to be poor in the bonding strength with concrete.
Claims (10)
1. The hot-sticking modified asphalt waterproof coating is solid at normal temperature and comprises the following components in percentage by mass:
40-55% of asphalt, 5-15% of modifier, 11-19% of adhesive, 1-6% of bonding compensator, 12-21% of softener, 1-5% of plasticizer and 3-8% of filler;
wherein the modifier is selected from one or more of flexible epoxy resin, polyisocyanate, chloroprene rubber, waste rubber powder, polyethylene resin, polypropylene resin, phenolic resin, SBR, SBS, polyethylene terephthalate, ethylene-vinyl acetate and coumarone resin;
the adhesive is selected from one or more of rosin resin, terpene resin, petroleum resin, medium molecular weight polyisobutylene with viscosity average molecular weight of 35000-55000, T612 viscosity index improver, T613 viscosity index improver and T614 viscosity index improver;
the softener is selected from one or more of turpentine, chlorinated paraffin, white oil, reduced-trilinear furfural extract oil, naphthenic oil and vegetable oil;
the plasticizer is selected from one or more of cobalt naphthenate, diisobutyl cyclohexanedicarboxylate, trioctyl trimellitate, environment-friendly n-tributyl citrate, dioctyl phthalate and dioctyl adipate;
the bonding compensation agent is selected from one or more of alicyclic epoxy silane SCA-E86E, bis (acetylacetone) diisopropyl titanate, 3-aminopropyl triethoxysilane and diisopropoxyl acetoacetate oleate aluminate;
the filler is selected from one or more of talcum powder, light calcium carbonate and mica powder.
2. The hot-bonding modified asphalt waterproof coating material as claimed in claim 1, wherein the asphalt is selected from one or two of heavy traffic road petroleum asphalt # 70 and # 90;
preferably, the bitumen penetration (25 ℃, 100g,5s, 0.1mm) is 60-100 and the softening point is 45-55 ℃.
3. The hot-tack modified asphalt waterproof coating material as claimed in claim 1, wherein the modifier is selected from one or more of flexible epoxy resin, neoprene, polypropylene resin, phenolic resin, SBR, SBS, ethylene-vinyl acetate and coumarone resin;
preferably, the adhesive is selected from one or two of medium molecular weight polyisobutylene with viscosity average molecular weight of 35000-55000 and T612 viscosity index improver.
4. The asphalt waterproof coating material with hot adhesion modification as claimed in claim 1, wherein the softening agent is one or two selected from naphthenic oil and white oil.
5. The hot-tack modified asphalt waterproofing paint according to claim 1, wherein the plasticizer is one or two selected from dioctyl phthalate and diisobutyl cyclohexanedicarboxylate.
6. The hot-tack modified asphalt waterproofing coating according to claim 1, wherein the bonding compensator is one or two selected from the group consisting of alicyclic epoxy silane SCA-E86 and diisopropoxy acetoacetate oleate aluminate.
7. The hot-tack modified asphalt waterproof coating material as claimed in claim 1, wherein the filler is one or two selected from light calcium carbonate and talc.
8. The method of preparing the hot melt modified asphalt coating of any one of claims 1 to 7, comprising the steps of:
a) Preparing the components according to the mixture ratio;
b) Putting the asphalt into a constant-temperature oven at 120-140 ℃, heating to a flowing state, and continuously preserving heat for at least more than 2 hours;
c) Weighing the asphalt in the flowing state obtained in the step b), transferring the asphalt into a container with a heat preservation and stirring device, slowly adding a modifier, a softener and a plasticizer, stirring at a low speed of 140-160 ℃ for 1-2 h, keeping the temperature unchanged, and continuously shearing for 1-2 h by using a high-speed shearing machine;
d) Adding the adhesive, the filler and the adhesive compensator into the mixed system obtained in the step c), keeping the temperature unchanged, continuously shearing for 1-2 hours by using a high-speed shearing machine, cooling, cutting into blocks, sealing, insulating and storing to obtain the adhesive.
9. The preparation method according to claim 8, wherein in the step c), the rotation speed of the low-speed stirring is 50 to 200r/min;
preferably, in said steps c) and d), the high shear rate is between 1000 and 2000rpm.
10. The use of the hot-tack modified asphalt waterproofing coating according to any one of claims 1 to 7 or the hot-melt modified asphalt coating prepared by the preparation method according to claim 8 or 9 in a waterproofing system for concrete pavements and bridge decks, comprising the steps of:
I. heating the thermal bonding modified asphalt waterproof coating to a flowing state, wherein the heating temperature is 150-160 ℃, and the discharging temperature is 150-160 ℃;
II, spraying or blade-coating the hot-bonding modified asphalt waterproof coating in the flowing state on the upper surface of a concrete base layer and the lower surface of a modified asphalt waterproof coiled material, immediately paving and pasting the modified asphalt waterproof coiled material on the concrete base layer, and rolling and pressing the edges for exhausting while spraying and pasting so as to achieve the full-bonding effect; the thickness of the thermal bonding modified asphalt waterproof coating on the concrete base layer is 0.8-1.5 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211510463.3A CN115772368A (en) | 2022-11-29 | 2022-11-29 | Hot-bonding modified asphalt waterproof coating and preparation method and application thereof |
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| CN202211510463.3A CN115772368A (en) | 2022-11-29 | 2022-11-29 | Hot-bonding modified asphalt waterproof coating and preparation method and application thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101921545A (en) * | 2010-09-27 | 2010-12-22 | 杭州中富彩新材料科技有限公司 | Asphalt waterproof paint for building and preparation method thereof |
| CN102408829A (en) * | 2011-10-27 | 2012-04-11 | 北京东方雨虹防水技术股份有限公司 | Hot melt type modified asphalt waterproof paint and preparation method thereof |
| CN106947273A (en) * | 2017-04-10 | 2017-07-14 | 中国铁道科学研究院金属及化学研究所 | A kind of concrete structure expansion joint rubber asphalt sill and preparation method thereof |
| CN110373110A (en) * | 2019-08-29 | 2019-10-25 | 广西禹杰防水防腐材料有限公司 | A kind of creepage type viscoelastic rubber water-proof paint and its production method |
-
2022
- 2022-11-29 CN CN202211510463.3A patent/CN115772368A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101921545A (en) * | 2010-09-27 | 2010-12-22 | 杭州中富彩新材料科技有限公司 | Asphalt waterproof paint for building and preparation method thereof |
| CN102408829A (en) * | 2011-10-27 | 2012-04-11 | 北京东方雨虹防水技术股份有限公司 | Hot melt type modified asphalt waterproof paint and preparation method thereof |
| CN106947273A (en) * | 2017-04-10 | 2017-07-14 | 中国铁道科学研究院金属及化学研究所 | A kind of concrete structure expansion joint rubber asphalt sill and preparation method thereof |
| CN110373110A (en) * | 2019-08-29 | 2019-10-25 | 广西禹杰防水防腐材料有限公司 | A kind of creepage type viscoelastic rubber water-proof paint and its production method |
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