CN112322238B - Foaming crack pouring adhesive - Google Patents
Foaming crack pouring adhesive Download PDFInfo
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- CN112322238B CN112322238B CN202011326369.3A CN202011326369A CN112322238B CN 112322238 B CN112322238 B CN 112322238B CN 202011326369 A CN202011326369 A CN 202011326369A CN 112322238 B CN112322238 B CN 112322238B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/08—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing carbon dioxide
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2363/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2495/00—Bituminous materials, e.g. asphalt, tar or pitch
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention relates to a novel foaming crack pouring sealant, which comprises A, B two components, wherein the component A comprises: 20-40 parts of waterborne epoxy resin, 1-10 parts of emulsified asphalt, 0-3 parts of diluent, 0-5 parts of filler and 0-1 part of water by mass, wherein the component B comprises the following components: 2-5 parts of high-activity curing agent, 1-3 parts of medium-activity curing agent and 0.1-1 part of accelerator. The foaming joint grouting glue is prepared by mixing water-based epoxy resin and emulsified asphalt, adding other auxiliaries to form a component A, and mixing different active curing agents to form a component B. A. After the component B is mixed, a curing reaction occurs in the system, the temperature of the system can be rapidly increased due to the generated heat release effect, and further, moisture vaporization occurs in the process of forming a polymer network, so that the foaming crack pouring sealant is obtained. Compared with the traditional crack pouring sealant, the crack pouring sealant does not need heating equipment, is low in consumption, and can reduce material cost; due to the excellent adhesion of the epoxy system, the crack pouring glue is firmly adhered to the wall surface of the crack, and is not easy to debond and crack.
Description
Technical Field
The invention relates to the technical field of pavement maintenance, in particular to a foaming crack pouring sealant.
Background
The highway is an important support for economic development of China. However, with the increase of the service time of the highway, various diseases can occur on the asphalt pavement due to factors such as external environment, traffic load, self aging and the like, and the pavement performance is further reduced. Among them, cracks are one of the main modes of damage, and are also one of the most serious types of damage to asphalt pavements. Cracks can affect the continuity and integrity of the pavement; rainwater enters the surface layer through the cracks, so that the adhesion between asphalt and aggregate is reduced, and more cracks and pits are generated; rainwater can reduce the bearing capacity of the base layer through the penetration of cracks, even collapse is caused, and the pavement performance is greatly influenced.
Crack pouring maintenance is a common maintenance measure. The crack pouring glue can effectively prevent rainwater from permeating, and keeps the integrity and durability of a pavement structure. The hot asphalt crack pouring adhesive modified by the polymer is greatly popularized due to the excellent performance and low price. For example, the Chinese patent with the application number of 2012102628497 discloses a pavement crack pouring adhesive which is composed of a compatilizer, a modifier, a stabilizer and matrix asphalt and can play a repairing role after being heated and poured into cracks; also, as disclosed in chinese patent publication No. CN111019600A, a high performance asphalt pavement crack pouring sealant and a preparation method thereof are disclosed, which adopts matrix asphalt, polymer modifier, rubber powder, compatilizer, linear and star SBS modifier, the linear and star are in the following ratio of 2: 3, the modification effect is better than that of a single modifier. However, the traditional polymer modified crack pouring sealant still has a plurality of defects: firstly, when in use, the crack pouring glue needs to be heated at high temperature, so that the energy consumption is large, pungent smell can be volatilized, and the environment is not favorable; secondly, the modified asphalt crack pouring sealant has low molecular polarity, insufficient bonding force with the wall surface of a pavement crack, easy debonding and further repair failure.
With the development of the technology, the appearance of partial new products solves the problems to a certain extent, but the short boards are still obvious. For example, Chinese patent application No. 2019103690069 discloses a polyurethane single-component liquid crack pouring sealant for roads and a preparation method thereof, wherein heating is not needed when the sealant is used, the sealant has excellent cohesiveness, but the sealant is expensive and has low cost performance; for example, the application No. 2019110705374 provides a road joint grouting material, and a preparation method and application thereof, and foaming agent is used for foaming joint grouting glue, so that the cost is reduced, the deformation capability is improved, and the joint grouting material still needs to be melted and poured when in use.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: most of the existing crack pouring glue needs to be heated and poured, the bonding performance is insufficient, and a solution with high cost performance is lacked. In order to overcome the defects in the prior art, the foaming crack pouring sealant is provided.
The technical scheme adopted by the invention is as follows: a foamed crack-filling adhesive is a mixture of A, B two components,
the component A comprises: 20-40 parts of waterborne epoxy resin, 1-10 parts of emulsified asphalt, 0-3 parts of diluent, 0-5 parts of filler and 0-1 part of water by mass,
the component B comprises: 2-5 parts of high-activity curing agent, 1-3 parts of medium-activity curing agent and 0.1-1 part of accelerator.
The epoxy equivalent of the aqueous epoxy resin in the component A is 180-220 g/mol, and the class is not particularly limited.
The solid content of the emulsified asphalt in the component A is 60-100%.
The diluent in the component A is any one or a mixture of two of butyl glycidyl ether and 1, 4-butanediol diglycidyl ether.
The filler in the component A is one or a mixture of two or more of kaolin, bentonite, calcium carbonate, talcum powder and fly ash.
The high-activity curing agent in the component B is any one or a mixture of two or more of diethanol amine, ethanol amine, ethylene diamine, diethylenetriamine, triethylene tetramine and tetraethylene pentamine.
The medium active curing agent in the component B is one or a mixture of two of polyether amine curing agent or polyamide curing agent.
The accelerator in the component B is any one of triethylamine, BDMA (N, N-dimethylbenzylamine), DMP-30 (2, 4, 6-tri (dimethylaminomethyl) phenol) and 2,4-EMI (2-ethyl-4-methylimidazole).
When the foaming crack pouring sealant is prepared, the preparation method of A, B comprises the following steps:
the preparation method of the component A comprises the following steps: uniformly mixing 20-40 parts by mass of waterborne epoxy resin and 1-10 parts by mass of emulsified asphalt, then adding 0-3 parts by mass of diluent, 0-5 parts by mass of filler and 0-1 part by mass of water, fully stirring to obtain a component A, and sealing and storing.
The preparation method of the component B comprises the following steps: and (2) uniformly mixing 2-5 parts by mass of high-activity curing agent, 1-3 parts by mass of medium-activity curing agent and 0.1-1 part by mass of accelerator to obtain a component B, and sealing and storing.
Preferably, A, B the two components are prepared as follows:
the preparation method of the component A comprises the following steps: uniformly mixing 30 parts by mass of waterborne epoxy resin and 10 parts by mass of emulsified asphalt with the solid content of 90%, then adding 2 parts by mass of 1, 4-butanediol diglycidyl ether, 3 parts by mass of bentonite and 1 part by mass of water, fully stirring to obtain a component A, and sealing and storing;
the preparation method of the component B comprises the following steps: preferably, 2.5 parts by mass of triethylene tetramine, 2 parts by mass of polyether amine and 0.5 part by mass of DMP-30 are uniformly mixed to obtain a component B, and the component B is sealed and stored.
When the foaming crack pouring sealant is used, the prepared A, B components are completely and uniformly mixed to obtain the foaming crack pouring sealant, and the obtained foaming crack pouring sealant is poured into cracks.
The foaming crack pouring adhesive is blended with emulsified asphalt by utilizing the hydrophilic characteristic of waterborne epoxy resin, the viscosity of a system is adjusted by a diluent, and after the foaming crack pouring adhesive is mixed with a component B, an epoxy group and a high-activity curing agent quickly generate a ring-opening reaction in the presence of an accelerant to release a large amount of heat, so that the temperature of the system is quickly increased, and the reaction of the medium-activity curing agent and the epoxy resin is further initiated to further accumulate the heat effect. Meanwhile, the water in the system starts to vaporize due to the rise of the temperature of the system, and the gas escapes to generate bubbles in the process of forming the polymer network and is finally locked by the polymer network to form a foaming structure.
Compared with the prior art, the invention has the following advantages:
1. the foaming crack pouring adhesive takes the water-based epoxy and the emulsified asphalt as system matrixes, has excellent fluidity without high-temperature heating during construction, reduces energy consumption, and can realize repair by penetrating into small cracks;
2. the foaming crack pouring adhesive takes water as a foaming agent, foams through the heat release of a curing reaction, does not relate to a toxic solvent, and is good in environmental protection; when the crack filling agent is used, less slurry is poured into the crack, the crack can be filled after foaming, the operation is simple, the cost is greatly reduced, and the problems that the polymer crack filling agent is good in performance, expensive in price and difficult to apply on a large scale are solved;
3. the cured system is a three-dimensional cross-linked network, has a stable structure and is not melted at high temperature; the addition of the medium-activity long-chain curing agent reduces the crosslinking density and endows the system with low-temperature toughness; the structural characteristics of the epoxy resin system ensure that the joint sealant has excellent adhesiveness and is not easy to debond and lose efficacy.
Detailed Description
The following examples are given for the detailed implementation and specific operation of the embodiments of the present invention, but the scope of the present invention is not limited to the following examples.
Example 1
The preparation method of the component A comprises the following steps:
mixing 20 parts by mass of water-based epoxy resin and 7 parts by mass of emulsified asphalt with the solid content of 90%, fully stirring to obtain a component A, and sealing and storing.
The preparation method of the component B comprises the following steps:
and (2) uniformly mixing 2 parts by mass of triethylene tetramine, 1 part by mass of polyether amine and 0.1 part by mass of DMP-30 to obtain a component B, and sealing and storing.
And completely and uniformly mixing the prepared A, B components to obtain the foaming crack pouring sealant. The performance indexes of the obtained foaming crack pouring adhesive are as follows: expansion ratio: 3 times of the total weight; softening point: heat softened but not flowed; flow value: 0 mm; and (3) low-temperature stretching: the glue is circulated for three times at 0 ℃ and 25% strain, and belongs to high-temperature type crack pouring glue.
Example 2
The preparation method of the component A comprises the following steps:
mixing 30 parts by mass of water-based epoxy resin with 10 parts by mass of emulsified asphalt with a solid content of 100%, then adding 3 parts by mass of 1, 4-butanediol diglycidyl ether, 3 parts by mass of bentonite and 1 part by mass of water, fully stirring to obtain a component A, and sealing and storing.
The preparation method of the component B comprises the following steps:
and (3) uniformly mixing 3 parts by mass of triethylene tetramine, 2 parts by mass of polyether amine and 0.5 part by mass of triethylamine to obtain a component B, and sealing and storing.
And completely and uniformly mixing the prepared A, B components to obtain the foaming crack pouring sealant. The performance indexes of the obtained foaming crack pouring adhesive are as follows: expansion ratio: 5 times of the total weight; softening point: heat softened but not flowed; flow value: 0 mm; and (3) low-temperature stretching: the glue is circulated for three times at minus 10 ℃ and 50 percent of strain, and belongs to common crack pouring glue.
Example 3
The preparation method of the component A comprises the following steps:
mixing 30 parts by mass of waterborne epoxy resin and 3 parts by mass of emulsified asphalt with the solid content of 70%, then adding 1 part by mass of 1, 4-butanediol diglycidyl ether and 5 parts by mass of montmorillonite, fully stirring to obtain a component A, and sealing and storing.
The preparation method of the component B comprises the following steps:
uniformly mixing 5 parts by mass of diethylenetriamine, 1 part by mass of polyamide and 0.6 part by mass of BDMA to obtain a component B, and sealing and storing.
And completely and uniformly mixing the prepared A, B components to obtain the foaming crack pouring sealant. The performance indexes of the obtained foaming crack pouring adhesive are as follows: expansion ratio: 4 times of the total weight; softening point: heat softened but not flowed; flow value: 0 mm; and (3) low-temperature stretching: the glue is circulated for three times at 0 ℃ and 25% strain, and belongs to high-temperature type crack pouring glue.
Example 4
The preparation method of the component A comprises the following steps:
mixing 40 parts by mass of water-based epoxy resin with 1 part by mass of emulsified asphalt with a solid content of 60%, then adding 2 parts by mass of 1, 4-butanediol diglycidyl ether and 5 parts by mass of bentonite, fully stirring to obtain a component A, and sealing and storing.
The preparation method of the component B comprises the following steps:
and (3) uniformly mixing 5 parts by mass of tetraethylenepentamine, 3 parts by mass of polyetheramine and 1 part by mass of DMP-30 to obtain a component B, and sealing and storing.
And completely and uniformly mixing the prepared A, B components to obtain the foaming crack pouring sealant. The performance indexes of the obtained foaming crack pouring adhesive are as follows: expansion ratio: 3 times of the total weight; softening point: heat softened but not flowed; flow value: 0 mm; and (3) low-temperature stretching: the glue is circulated for three times at 0 ℃ and 25% strain, and belongs to high-temperature type crack pouring glue.
Claims (4)
1. A foaming crack pouring adhesive is characterized in that: is a mixture of A, B two components,
the component A comprises: 20-40 parts of waterborne epoxy resin, 1-10 parts of emulsified asphalt, 0-3 parts of diluent, 0-5 parts of filler and 0-1 part of water by mass,
the component B comprises: 2-5 parts by mass of high-activity curing agent, 1-3 parts by mass of medium-activity curing agent and 0.1-1 part by mass of accelerator;
the ratio of the water-based epoxy resin in the component A to the total mass is 57-71%;
the solid content of the emulsified asphalt in the component A is 60-100%;
the high-activity curing agent in the component B is any one or a mixture of two or more of diethanol amine, ethanol amine, ethylene diamine, diethylenetriamine, triethylene tetramine and tetraethylenepentamine;
the medium active curing agent in the component B is one or a mixture of polyether amine curing agent or polyamide curing agent;
the accelerator in the component B is any one of triethylamine, BDMA (N, N-dimethylbenzylamine), DMP-30 (2, 4, 6-tris (dimethylaminomethyl) phenol) and 2,4-EMI (2-ethyl-4-methylimidazole).
2. The foamed crack pouring sealant according to claim 1, wherein: the epoxy equivalent of the aqueous epoxy resin in the component A is 180-220 g/mol.
3. The foaming crack pouring glue of claim 1, characterized in that: the diluent in the component A is any one or a mixture of two of butyl glycidyl ether and 1, 4-butanediol diglycidyl ether.
4. The foamed crack pouring sealant according to claim 1, wherein: the filler in the component A is one or a mixture of two or more of kaolin, bentonite, calcium carbonate, talcum powder and fly ash.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011326369.3A CN112322238B (en) | 2020-11-24 | 2020-11-24 | Foaming crack pouring adhesive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011326369.3A CN112322238B (en) | 2020-11-24 | 2020-11-24 | Foaming crack pouring adhesive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112322238A CN112322238A (en) | 2021-02-05 |
| CN112322238B true CN112322238B (en) | 2022-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011326369.3A Active CN112322238B (en) | 2020-11-24 | 2020-11-24 | Foaming crack pouring adhesive |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9982136B2 (en) * | 2014-08-11 | 2018-05-29 | Research Institute Of Highway Ministry Of Transport | Waterborn polymer-modified emulsified asphalt mixture and process for producing the same |
| CN105985656A (en) * | 2015-02-13 | 2016-10-05 | 上海龙孚材料技术有限公司 | Aqueous epoxy resin modified emulsified asphalt, and preparation method and application thereof |
| CN105778532A (en) * | 2016-03-09 | 2016-07-20 | 盘锦华冠中交路星道路沥青有限公司 | Cold-patch crack pouring adhesive and method for preparing same |
| CN107586534B (en) * | 2016-07-07 | 2020-04-07 | 交通运输部公路科学研究所 | Cold joint material for drainage asphalt pavement and preparation method and application thereof |
| CN111892893A (en) * | 2020-08-20 | 2020-11-06 | 常州市建筑科学研究院集团股份有限公司 | Novel environment-friendly seam beautifying agent and preparation method thereof |
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2020
- 2020-11-24 CN CN202011326369.3A patent/CN112322238B/en active Active
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