阅读说明：本技术 一种单组分二阶反应水性环氧沥青防水粘结胶 (Single-component second-order reaction water-based epoxy asphalt waterproof adhesive ) 是由 杨建忠 周明 吴立新 郑坚 刘轶伦 邓宏 于 2021-09-22 设计创作，主要内容包括：本发明公开了一种单组分二阶反应水性环氧沥青防水粘结胶,按重量份包括如下组分：E20环氧树脂15-30份、E44环氧树脂2-8份、改性环氧树脂15-20份、氟碳树脂19-26份、特种沥青15-22份、固化剂20-38份、水性氨基树脂交联剂10-15份、乳化剂12-17份、助溶剂1-8份、调节剂5-10份、催化剂0.5-2份,水15-20份。本发明无毒、无溶剂、无污染、绿色水性环保产品。配制方便,常温施工、不需加热、不需撒布碎石,施工方便。渗透性好,对混凝土表面的裂缝和缺陷有修补功能。一阶反应后与水泥混凝土基层粘结附着力强度高(大于1.3Mpa)。与160℃高温沥青混合料铺装层发生二阶热固反应,与结构粘结强度高,抗剪抗拉能力强。本发明原料成本低廉,成本优势明显,具有较强的应用前景。(The invention discloses a single-component second-order reaction water-based epoxy asphalt waterproof adhesive which comprises the following components in parts by weight: 15-30 parts of E20 epoxy resin, 2-8 parts of E44 epoxy resin, 15-20 parts of modified epoxy resin, 19-26 parts of fluorocarbon resin, 15-22 parts of special asphalt, 20-38 parts of curing agent, 10-15 parts of waterborne amino resin crosslinking agent, 12-17 parts of emulsifier, 1-8 parts of cosolvent, 5-10 parts of regulator, 0.5-2 parts of catalyst and 15-20 parts of water. The invention is a green water-based environment-friendly product without toxicity, solvent and pollution. The preparation is convenient, the construction is carried out at normal temperature, heating and spreading of broken stones are not needed, and the construction is convenient. The permeability is good, and the repairing function is provided for the cracks and defects on the surface of the concrete. The adhesive force strength of the first-order reaction product and the cement concrete base layer is high (more than 1.3 Mpa). The asphalt mixture has second-order thermosetting reaction with a paving layer of the asphalt mixture with high temperature of 160 ℃, and has high bonding strength with the structure and strong shearing and tensile capabilities. The invention has the advantages of low cost of raw materials, obvious cost advantage and stronger application prospect.)

1. The single-component second-order reaction water-based epoxy asphalt waterproof adhesive is characterized by comprising the following components in parts by weight: 15-30 parts of E20 epoxy resin, 2-8 parts of E44 epoxy resin, 15-20 parts of modified epoxy resin, 19-26 parts of fluorocarbon resin, 15-22 parts of special asphalt, 20-38 parts of curing agent, 10-15 parts of waterborne amino resin crosslinking agent, 12-17 parts of emulsifier, 1-8 parts of cosolvent, 5-10 parts of regulator, 0.5-2 parts of catalyst and 15-20 parts of water.

2. The single-component second-order reaction water-based epoxy asphalt waterproof adhesive glue of claim 1, which is characterized in that: the modified epoxy resin is polysiloxane modified epoxy resin, the Tg value is 70-80 ℃, and the solid content is 30-40%.

3. The single-component second-order reaction water-based epoxy asphalt waterproof adhesive glue of claim 1, which is characterized in that: the fluorocarbon resin is chlorotrifluoroethylene/vinyl ester resin with solid content of more than 45 percent.

4. The single-component second-order reaction water-based epoxy asphalt waterproof adhesive glue of claim 1, which is characterized in that: the curing agent is one or more of ketimine, butane diisocyanate, 1, 3-bis (isocyanatomethyl) cyclohexane, 1, 5-naphthylene diisocyanate, isocyanate dimer and isocyanurate.

5. The single-component second-order reaction water-based epoxy asphalt waterproof adhesive glue of claim 1, which is characterized in that: the cosolvent is one or more than two of methyl maleic acid, propylene glycol monomethyl ether, pentaerythritol and eicosapentaenoic acid isopropyl alcohol ester.

6. The single-component second-order reaction water-based epoxy asphalt waterproof adhesive glue of claim 1, which is characterized in that: the emulsifier is dimer acid or 601 emulsifier or quaternary ammonium salt produced by Hangzhou electrochemical group auxiliary agent chemical industry Co.

7. The single-component second-order reaction water-based epoxy asphalt waterproof adhesive glue of claim 1, which is characterized in that: the regulator is one or more of a sodium acrylate-hydroxyethyl methacrylate-methyl acrylate composition, an acrylic acid-2-acrylamide-2-methylpropanesulfonic acid-methacrylic acid-acrylic acid composition and an acrylic acid-hydroxypropyl acrylate-sodium acrylate composition.

8. The single-component second-order reaction water-based epoxy asphalt waterproof adhesive glue of claim 1, which is characterized in that: the catalyst is one or a mixture of more than two of cyclodextrin, crown ether and dodecyl trimethyl ammonium chloride.

9. The single-component second-order reaction water-based epoxy asphalt waterproof adhesive glue of claim 1, which is characterized in that: the aqueous amino resin cross-linking agent is aziridine or N-hydroxy compound.

Technical Field

The invention relates to the field of road materials, in particular to a single-component second-order reaction water-based epoxy asphalt waterproof adhesive.

Background

The cement concrete is the most main base layer structure form of the asphalt pavement; the asphalt pavement paving structure comprises a cement concrete-waterproof bonding layer-asphalt mixture paving layer from bottom to top in sequence. Because the cement concrete base course and the asphalt mixture pavement layer are two materials with different properties (different materials, different elastic moduli, different deformation coefficients, different strengths and the like), the interface combination between the cement concrete base course and the asphalt mixture pavement layer is a weak link, and the waterproof bonding layer is used for improving and enhancing the weak interface. Through the bonding effect of the waterproof bonding layer, the concrete base layer and the asphalt mixture pavement layer are bonded together to form a whole, and various shearing destructive forces generated by the load of a running vehicle, wheel impact and climbing emergency brake are jointly borne. If the waterproof bonding layer loses the bonding function or the bonding effect is not ideal, the asphalt mixture pavement surface faces the risk of individual combat, and the impact resistance, shear resistance and damage resistance are relatively weakened. Specifically, relative displacement is easy to generate in the horizontal direction to cause shearing damage, so that diseases such as moving congestion and the like occur; the severe impact of the wheel and the continuous action of the load make the asphalt mixture pavement layer easily have diseases such as loose peeling and the like, and the asphalt mixture pavement layer is more serious under the overload condition.

Therefore, the waterproof bonding layer can not provide enough bonding strength, and is directly related to the quality of a pavement system of a road (bridge) surface, so that the service life of the road and the bridge is influenced. Chinese patent CN201710229414 discloses a two-component epoxy asphalt emulsion material and a preparation method thereof, wherein the material consists of a part A and a part B; the part A consists of asphalt, water, an emulsifier, an epoxy resin emulsion and an auxiliary agent; the part B is curing agent emulsion and is used for road and bridge engineering construction and maintenance. Chinese patent CN201610870900 discloses a road patching material made of glass fiber and water-based epoxy emulsified asphalt, which comprises old aggregate for road regeneration, new aggregate, reinforcing fiber and water-based epoxy emulsified asphalt. The road repairing material with short curing time and high curing strength is prepared by dry-mixing the old road aggregate, the glass fiber and the new aggregate when in use, adding the waterborne epoxy asphalt and uniformly stirring. The patent CN201310414087 discloses a color high polymer modified water emulsion asphalt-based waterproof coating and a preparation method thereof, the material is prepared by mixing high-concentration superfine suspension microemulsion anion modified color emulsified asphalt, various synthetic high-molecular polymers such as SBS rubber, chloroprene rubber, high-molecular resin, epoxy resin and the like, and various functional additives such as a plasticizer and the like as raw materials by using a special production process, and tests show that the color is bright after film forming, the coating does not crack at the low temperature of-30 ℃, does not flow at the high temperature of 120 ℃, the elastic recovery rate reaches 90 percent, the coating can be stably stored for more than 2 years, and the service life reaches 50 years.

In conclusion, how to provide an epoxy asphalt waterproof adhesive which is healthy, environment-friendly, low in cost, simple in preparation, good in durability and strong in mechanical property is a technical problem to be solved by technical personnel in the field.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide the single-component second-order reaction water-based epoxy asphalt waterproof adhesive which is simple to prepare, good in environmental protection performance, convenient to construct, strong in mechanical property and excellent in comprehensive performance.

In order to achieve the purpose, the technical scheme of the invention is that the single-component second-order reaction water-based epoxy asphalt waterproof adhesive comprises the following components in parts by weight: 15-30 parts of E20 epoxy resin, 2-8 parts of E44 epoxy resin, 15-20 parts of modified epoxy resin, 19-26 parts of fluorocarbon resin, 15-22 parts of special asphalt, 20-38 parts of curing agent, 10-15 parts of waterborne amino resin crosslinking agent, 12-17 parts of emulsifier, 1-8 parts of cosolvent, 5-10 parts of regulator, 0.5-2 parts of catalyst and 15-20 parts of water. Single component means that the formulation is the final formulation, i.e. ready to use, has a long shelf life, does not precipitate, and does not need to be mixed with other ingredientsThe components are mixed again, and the preparation is simple. The second-order reaction water-based epoxy asphalt waterproof adhesive is an improved waterproof adhesive material for concrete bridge floors, steel bridge floors, composite pavements, tunnel pavements and special buildings, and is a single-component black uniform liquid. The epoxy asphalt waterproof bonding adhesive fully contacts O in the air under a certain specific surface area₂、SO₂The active gas is subjected to copolymerization physical and chemical reaction, which is a first-order reaction stage of the product; the reaction at this stage generates elastic colloid material with certain strength, which can prevent the construction vehicles and high temperature asphalt concrete paving equipment from damaging the waterproof bonding layer. In the process of paving hot asphalt concrete, the elastic colloid waterproof bonding layer is dissolved at the temperature of more than 100 ℃, and the large aggregate is embedded into the elastic waterproof bonding layer to form a shear bond, thereby playing good roles of bonding and shearing. After the temperature of the pavement is reduced to below 40 ℃, the whole reaction is finished to form a waterproof bonding layer with higher elasticity and plasticity, and the second-order reaction of the product is finished.

The preferable modified epoxy resin is polysiloxane modified epoxy resin, the Tg (glass transition temperature) value is 70-80 ℃, and the solid content is 30-40%.

Preferably the fluorocarbon resin is a chlorotrifluoroethylene/vinyl ester resin having a solids content of greater than 45%.

The special asphalt is prepared by adding petroleum-based active reaction substances into a blend of natural asphalt and petroleum asphalt as main components.

Curing agents are a class of substances that enhance or control the curing reaction. The resin curing is carried out by carrying out chemical reactions such as condensation, ring closure, addition or catalysis to enable the thermosetting resin to generate an irreversible change process, and the curing is completed by adding a curing agent. The preferred curing agent is one or more of ketimine, butane diisocyanate, 1, 3-bis (isocyanatomethyl) cyclohexane, 1, 5-naphthylene diisocyanate, isocyanate dimer and isocyanurate.

Preferably, the cosolvent is one or more than two of methyl maleic acid, propylene glycol monomethyl ether, pentaerythritol and eicosapentaenoic acid isopropyl alcohol ester.

The emulsifier reduces the interfacial tension of the components in the mixed system and forms a relatively strong film on the surface of the droplets, and an electric double layer is formed on the surface of the droplets due to the electric charge given by the emulsifier, preventing the droplets from aggregating with each other, thereby maintaining a uniform emulsion. The preferred resin emulsifier is dimer acid or 601 emulsifier or quaternary ammonium salt produced by Hangzhou electrochemical group auxiliary chemical company.

The regulator is a substance with two functional groups with different properties, and the molecular structure of the regulator is mainly characterized in that the molecule contains two groups with different chemical properties, one group is an inorganophilic group and is easy to chemically react with the surface of an inorganic substance; the other is an organophilic group which can react with synthetic resin or other polymers or generate hydrogen bonds to be dissolved in the epoxy asphalt waterproof adhesive to improve the performance of the epoxy asphalt waterproof adhesive. Preferably, the regulator is one or more of a sodium acrylate-hydroxyethyl methacrylate-methyl acrylate composition, an acrylic acid-2-acrylamide-2-methylpropanesulfonic acid-methacrylic acid-acrylic acid composition and an acrylic acid-hydroxypropyl acrylate-sodium acrylate composition.

The catalyst can reduce the activation energy of the system, enhance the compatibility of the epoxy asphalt waterproof adhesive component and further increase the performance of the material. Preferably, the catalyst is one or a mixture of more than two of cyclodextrin, crown ether and dodecyl trimethyl ammonium chloride.

The water-based amino resin cross-linking agent can improve the adhesive force to a special substrate and improve the water resistance, and is used as a heat cross-linking agent of a resin material. Preferred aqueous amino resin crosslinkers are aziridines or N-hydroxy compounds.

The invention has the advantages and beneficial effects that:

1. non-toxic, non-solvent, non-pollution, green water-based environmental protection product.

2. The preparation is convenient, the construction is carried out at normal temperature, heating and spreading of broken stones are not needed, the wheels and the crawler of the paver are not adhered for 8-24 hours (after the first-order reaction), and the construction is convenient.

3. The permeability is good, and the repairing function is provided for the cracks and defects on the surface of the concrete.

4. The adhesive force strength of the first-order reaction product and the cement concrete base layer is high (more than 1.3 Mpa).

5. The asphalt mixture has second-order thermosetting reaction with a paving layer of the asphalt mixture with high temperature of 160 ℃, and has high bonding strength with the structure and strong shearing and tensile capabilities. The invention has the advantages of low cost of raw materials, obvious cost advantage and stronger application prospect.

Detailed Description

The following further describes embodiments of the present invention with reference to examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

Example 1

15 parts of E20 epoxy resin, 2 parts of E44 epoxy resin, 15 parts of modified epoxy resin, 19 parts of fluorocarbon resin, 15 parts of special asphalt, 20 parts of curing agent butane diisocyanate, 10 parts of waterborne amino resin cross-linking agent aziridine, 12 parts of emulsifier dimer acid, 1 part of cosolvent methyl maleic acid, 5 parts of regulator sodium acrylate-hydroxyethyl methacrylate-methyl acrylate composition, 0.5 part of catalyst cyclodextrin and 15 parts of water.

Example 2

25 parts of E20 epoxy resin, 5 parts of E44 epoxy resin, 20 parts of modified epoxy resin, 26 parts of fluorocarbon resin, 22 parts of special asphalt, 38 parts of curing agent 1, 3-bis (isocyanatomethyl) cyclohexane, 10 parts of waterborne amino resin crosslinking agent aziridine, 17 parts of emulsifier dimer acid, 8 parts of cosolvent propylene glycol methyl ether, 10 parts of regulator with the mass ratio of acrylic acid-hydroxypropyl acrylate-sodium acrylate composition to sodium acrylate-hydroxyethyl methacrylate-methyl acrylate composition being 3:2, 2 parts of catalyst crown ether and 20 parts of water.

Example 3

20 parts of E20 epoxy resin, 3 parts of E44 epoxy resin, 20 parts of modified epoxy resin, 26 parts of fluorocarbon resin, 22 parts of special asphalt, 38 parts of curing agent 1, 5-naphthylene diisocyanate, 15 parts of waterborne amino resin crosslinking agent N-hydroxy compounds, 17 parts of emulsifier dimer acid, 8 parts of cosolvent pentaerythritol, 10 parts of regulator sodium acrylate-hydroxyethyl methacrylate-methyl acrylate composition, 2 parts of catalyst crown ether and 15 parts of water.

Example 4

15 parts of E20 epoxy resin, 8 parts of E44 epoxy resin, 15 parts of modified epoxy resin, 26 parts of fluorocarbon resin, 20 parts of special asphalt, 30 parts of curing agent isocyanate dimer, 15 parts of waterborne amino resin cross-linking agent N-hydroxy compound, 15 parts of 601 emulsifier, 5 parts of cosolvent isopropyl eicosapentaenoate, 10 parts of regulator acrylic acid-2-acrylamide-2-methylpropanesulfonic acid-methacrylic acid-acrylic acid composition, 1 part of catalyst dodecyl trimethyl ammonium chloride and 20 parts of water.

Example 5

30 parts of E20 epoxy resin, 8 parts of E44 epoxy resin, 17 parts of modified epoxy resin, 20 parts of fluorocarbon resin, 22 parts of special asphalt, 38 parts of curing agent isocyanurate, 12 parts of waterborne amino resin crosslinking agent aziridine, 12 parts of 601 emulsifier and wt% of methyl maleic acid: 7 parts of a cosolvent, 7.5 parts of a regulator acrylic acid-2-acrylamide-2-methylpropanesulfonic acid-methacrylic acid-acrylic acid composition, 2 parts of a catalyst dodecyl trimethyl ammonium chloride and 15 parts of water.

Example 6

30 parts of E20 epoxy resin, 2 parts of E44 epoxy resin, 15 parts of modified epoxy resin, 25 parts of fluorocarbon resin, 15 parts of special asphalt, 25 parts of curing agent with the weight percent of isocyanurate being 1, 5-naphthylene diisocyanate being 1:1, 15 parts of water-based amino resin cross-linking agent aziridine, 15 parts of emulsifier dimer acid, 6 parts of cosolvent eicosapentaenoic acid isopropanol ester, 10 parts of regulator acrylic acid-hydroxypropyl acrylate-sodium propylene sulfonate composition, 1.5 parts of catalyst cyclodextrin and 15 parts of water.

Examples of the experiments

Examples 1-6 are compared to the performance tests of the waterproof adhesive glue commercially available as a comparative example: the method is characterized in that cement concrete is used as a substrate, the specification is 250 multiplied by 450mm, the single-component second-order reaction water-based epoxy asphalt waterproof bonding adhesive is a black uniform liquid without obvious particles, the preparation of a coating template is carried out according to the technical specification for highway asphalt pavement construction (JTG F40-2004) and the technical specification for cement concrete bridge deck water-based epoxy asphalt waterproof bonding layer construction (DB32/T2285-2012), and the cement concrete base layer is subjected to shot blasting and floating ash cleaning to clean concreteSurface layer, cement concrete priming treatment, spraying or spraying single-component second-order reaction water-based epoxy asphalt waterproof bonding glue according to 0.7-0.8kg/m²Preparing a sample, naturally drying for 8-24 hours, and paving the hot asphalt concrete. The inventive properties are compared with those of commercially available waterproof adhesives in the following table:

from the above table, it can be seen that in examples 1 to 6, according to test method T0651-1993 in JTG E20-2011, the content of the evaporation residue is not less than 50%, the content of the comparative example is 40%, and the water-proof property is realized under the water pressure of 0.3MPa for 30min, while the comparative example is permeable to water and has high heat resistance, and does not flow or slide at 70 ℃, and the surface of the comparative example is flow-peeled. The adhesive force and the shearing strength of the invention are also superior to the commercial waterproof adhesive material. The invention is characterized in that Ca (OH)₂The concrete is stable and firm and has sufficient corrosion resistance, and the comparative example is separated and disintegrated to expose a concrete layer. After the weight (500g, 300mm high) freely falls down, the invention does not perforate and does not seep water, but the comparative example perforates and seeps water, in addition, the drying performance of the invention is also superior to the comparative example, and the invention meets the requirements of GB/T16777-.

In conclusion, the invention has the advantages of strong waterproof performance, good storage stability after preparation, difficult sedimentation, long-term use and good construction property, and is suitable for various construction methods. The adhesive force strength of the first-order reaction product and the cement concrete base layer is more than 1.3 Mpa. The asphalt mixture has second-order thermosetting reaction with the asphalt mixture pavement layer at the high temperature of 160 ℃, and has high bonding strength with the structure and strong shearing and tensile capabilities. The comprehensive performance is far superior to that of the waterproof viscose material sold on the market at present. The single-component second-order reaction water-based epoxy asphalt waterproof adhesive is environment-friendly and nontoxic, uses a special formula, is harmless to people and environment, and meets the requirement of environmental protection. The cost advantage is obvious, and the method has a strong application prospect.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.