CN109021505B - Polymer emulsified asphalt ultrathin surface sealing material and preparation method and application thereof - Google Patents
Polymer emulsified asphalt ultrathin surface sealing material and preparation method and application thereof Download PDFInfo
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- CN109021505B CN109021505B CN201810923876.1A CN201810923876A CN109021505B CN 109021505 B CN109021505 B CN 109021505B CN 201810923876 A CN201810923876 A CN 201810923876A CN 109021505 B CN109021505 B CN 109021505B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
- C08L63/10—Epoxy resins modified by unsaturated compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention belongs to the technical field of compositions of asphalt materials, and particularly relates to a polymer emulsified asphalt ultrathin surface sealing material. The seal coat material mainly comprises epoxy modified acrylic resin and asphalt. The material of the invention has good compatibility, uniform appearance, no oil accumulation and no oil spots; the strength is high; the anti-permeability performance is good; the skid resistance is good; the wear resistance is good.
Description
Technical Field
The invention belongs to the technical field of compositions of asphalt materials, and particularly relates to a polymer emulsified asphalt ultrathin surface sealing material and a preparation method and application thereof.
Background
By 2016, the total mileage of the highway in China reaches 469.63 kilometers, the maintenance mileage of the highway reaches 459.00 kilometers, and the maintenance mileage accounts for 97.7 percent of the total mileage of the highway, wherein the traffic mileage of the highway exceeds 12 kilometers, and the highway occupies the first position of the world, and the huge total mileage of the highway determines the huge market demand of the maintenance industry.
The total mileage of highway traffic in China is increased year by year, and the major span from 'primary communication' to 'coverage and net formation' is realized. However, with the increasingly large amount of traffic and load, and the increasingly severe natural environment and climate factors, early pavement diseases such as cracks, ruts, pits, sinks, surface damages, looseness and the like appear on the original asphalt pavement when the original asphalt pavement does not reach the design age, which greatly reduces the driving comfort of the asphalt pavement and is not beneficial to driving safety. Aiming at the early diseases of asphalt pavements, pavement sealing technologies such as sealing, gravel sealing, micro surfacing, slurry sealing, thin layer overlay and the like are in line with the social development requirements and are in time.
Although the sealing technologies such as gravel sealing, micro-surfacing, slurry sealing and thin-layer cover can repair and maintain early-stage road surface diseases, the requirements on equipment, construction process and quality of technicians are severe. Meanwhile, the technology can bring a series of problems of traffic and social and economic losses and the like caused by environmental protection, waste treatment, energy waste, re-marking of cross road surface lines and overlong road sealing time.
The ultrathin surface is a mixture consisting of polymer modified emulsified asphalt and an aqueous material taking a polymer additive as main components. The sealing high-pressure spraying vehicle is adopted to spray the ultra-thin layer on the asphalt pavement, so that the micro-cracks of the pavement can be effectively sealed, the water infiltration is prevented, the waterproof performance is improved, the asphalt aging of the pavement can be delayed, the temperature of an asphalt surface layer is reduced, the anti-skid performance of the pavement is kept, the pavement aging is prevented, and the loose condition of the pavement surface is improved.
However, the current ultrathin surface sealing material in China generally adopts common emulsified asphalt, SBR modified emulsified asphalt or SBS modified emulsified asphalt and waterborne epoxy to form a material, and because the thickness is large, moisture is difficult to volatilize, the bonding strength between a cementing material and a base surface is low, and the wear resistance and the skid resistance are poor, the requirement of preventive maintenance of the highway asphalt pavement in China at the present stage is difficult to meet.
Disclosure of Invention
In view of the above, the invention aims to provide a seal coat material which has good wear resistance and skid resistance and can meet the requirement of preventive maintenance of the asphalt pavement of the expressway at the present stage in China.
The parts are parts by mass unless otherwise specified.
In addition, the inventor also finds that the maintenance time of the existing ultrathin surface sealing material is long, and the requirement of quick open traffic is difficult to meet, particularly the requirement of the municipal road construction on the road sealing time is difficult to meet.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the seal material mainly comprises epoxy modified acrylic resin and asphalt.
The inventor unexpectedly finds that the sealing material taking the epoxy modified acrylic resin and the asphalt as main components has good wear resistance and skid resistance, and can meet the requirement of preventive maintenance of the asphalt pavement of the expressway at the present stage in China.
Further, the epoxy modified acrylic resin is glycidyl ether epoxy modified acrylic emulsion graft modified acrylic acid.
Further, the asphalt is 70# emulsified asphalt or SBS modified 70# emulsified asphalt.
Further, the proportioning relation is as follows by mass parts: 40-70 parts of epoxy modified acrylic resin and 25-40 parts of asphalt.
Further, the composition also comprises the following components: a latent curing agent and/or a matting agent and/or a defoaming agent and/or a dispersing agent and/or a film forming agent and/or fine sand and/or a filler.
Further, the latent curing agent is beta, beta' -dimethylaminoethoxy-4, 4,5, 5-tetramethyl-1, 3, 2-dioxaborolan.
Further, the flatting agent is pure polyester flatting resin.
Further, the defoaming agent is a polysiloxane derivative.
Further, the dispersant is poly caprylamide.
Further, the film forming agent is alkylphenol polyoxyethylene TX-10, alkylphenol polyoxyethylene NP-10 or fatty alcohol polyoxyethylene AEO-9.
Further, the fine sand is quartz sand or carborundum.
Further, the particle size of the fine sand is 70-110 meshes.
Further, the filler is barium sulfate, talcum powder or kaolin.
Further, the proportioning relation is as follows by mass parts: 40-70 parts of epoxy modified acrylic resin, 25-40 parts of asphalt and/or 1-6 parts of latent curing agent and/or 2-15 parts of flatting agent and/or 3-7 parts of defoaming agent and/or 2-5 parts of dispersing agent and/or 12-24 parts of film forming agent and/or 50-80 parts of fine sand and/or 30-70 parts of filler.
The seal material has good skid resistance.
The seal material has good wear resistance.
The seal material has good compatibility.
The seal material has high strength.
The sealing material has good anti-permeability performance.
The sealing material has good embedding effect on the original pavement, and can improve the service life of the asphalt pavement.
The invention also aims to provide a preparation method of the sealing material, which comprises the following steps:
adding epoxy modified acrylic resin into asphalt, heating to 50-60 ℃, mixing, then shearing, adding a latent curing agent into emulsified asphalt in the shearing process, shearing, and adding a delustering agent, a defoaming agent, a dispersing agent, a film forming agent, fine sand and a filler into the emulsified asphalt; and then shearing to obtain the product.
Further, the method specifically comprises the following steps: respectively heating the asphalt and the epoxy acrylate to 50-60 ℃, mixing, then shearing at the shearing rate of 2500 plus 8000 rpm, adding the latent curing agent into the mixture, shearing for 5-10min, adding the flatting agent, the defoaming agent, the dispersing agent, the film forming agent, the fine sand and the filler, and then shearing at the shearing rate of 5500 plus 8000 rpm for 30-45min to obtain the epoxy acrylate-modified asphalt.
The sealing material prepared by the method has excellent wear resistance and skid resistance, and can meet the preventive maintenance requirement of the highway asphalt pavement at the present stage in China.
The method is simple, convenient, and convenient for operation, and is suitable for industrialized mass production
The invention also aims to protect the application of the seal coat material in the maintenance of asphalt pavements. The sealing material is used for maintaining the asphalt pavement, and can prolong the service life of the asphalt pavement effectively.
The invention has the beneficial effects that:
the seal material of the invention has good compatibility, uniform appearance, no oil accumulation and no oil spots.
The sealing layer material has good skid resistance, and the skid resistance can reach 67-72.
The sealing layer material has good wear resistance, and the wet wheel wear is 210-234g/m2。
The sealing material has high strength, the bonding strength at 25 ℃ can reach 1.8-2.1MPa, and the bonding strength at 40 ℃ can reach 1.1-1.4 MPa.
The seal material has the advantages of quick curing time, short sealing time and real drying time of 4-7h at 25 ℃.
The sealing layer material of the invention has good anti-permeability performance, and the anti-permeability (improvement rate) can reach 100%.
The seal material has high Marshall stability, and the Marshall stability after being coated can reach 8.7-9.1 KN.
The sealing material is used for an ultra-thin surface, the thickness of the material is thin, the water evaporation is rapid, the strength is rapidly increased, and the surface drying time at 25 ℃ is 1.6-2 h.
The sealing material has good embedding effect on the pavement and can effectively prolong the service life of the asphalt pavement.
The preparation method of the seal material is simple, convenient and fast, is convenient to operate, and is suitable for industrial mass production.
Detailed Description
The examples are provided for better illustration of the present invention, but the present invention is not limited to the examples. Therefore, those skilled in the art should make insubstantial modifications and adaptations to the embodiments of the present invention in light of the above teachings and remain within the scope of the invention.
The following glycidyl ether epoxy modified acrylic emulsion graft modified acrylic acid was purchased from, and the production lot number is; 56-25-7
The CAS number of the 70# emulsified asphalt is 8052-42-4;
the CAS number of the SBS modified 70# emulsified asphalt is 8052-42-4;
the CAS number of the following beta, beta' -dimethylaminoethoxy-4, 4,5, 5-tetramethyl-1, 3, 2-dioxaborolane is 964-52-3
The CAS number of the following pure polyester matting resin RB608 is 29987-69-7;
the CAS number for the following polysiloxane derivatives is 63148-62-9;
the CAS number of the following polyoctanoamide is 629-01-6;
the CAS number of alkylphenol ethoxylates TX-10 is 9002-93-1;
the CAS number of the alkylphenol polyoxyethylene NP-10 is 9002-93-1;
the CAS number of the fatty alcohol-polyoxyethylene ether AEO-9 is 52292-17-8.
Example 1
The seal layer material comprises the following components: 45 parts of glycidyl ether epoxy modified acrylic emulsion graft modified acrylic acid, 35 parts of 70# emulsified asphalt, 3 parts of beta, beta' -dimethylaminoethoxy-4, 4,5, 5-tetramethyl-1, 3, 2-dioxaborolan, 3 parts of pure polyester extinction resin RB 6084, 4 parts of polysiloxane derivatives, 3 parts of aliphatic amide dispersants, 75 parts of quartz sand with the particle size of 70-110 meshes and 35 parts of kaolin; all in parts by mass.
The preparation method of the seal material comprises the following specific steps:
respectively heating 70# emulsified asphalt and glycidyl ether epoxy modified acrylic acid emulsion graft modified acrylic acid to 50 ℃, mixing, shearing at a shearing rate of 2500 rpm, adding beta, beta' -dimethylaminoethoxy-4, 4,5, 5-tetramethyl-1, 3, 2-dioxaborolan, and after shearing for 5min, adding pure polyester matting resin RB608, polysiloxane derivatives, polycaprylamide, alkylphenol polyoxyethylene ether TX-10, quartz sand and kaolin; and then shearing to obtain the epoxy sealing material, and then shearing at a shearing rate of 5500 revolutions per minute for 45min to obtain the epoxy sealing material.
Spraying the sealing material on the base surface, curing to obtain the sealing layer, and spraying the obtained sealing layer on the asphalt pavement with a spraying vehicle under high pressure in an amount of 0.9 kg/m2。
Example 2
The seal layer material comprises the following components: 50 parts of glycidyl ether epoxy modified acrylic emulsion graft modified acrylic acid, 38 parts of SBS modified 70# emulsified asphalt, 5 parts of beta, beta' -dimethylaminoethoxy-4, 4,5, 5-tetramethyl-1, 3, 2-dioxaborolan, 5 parts of pure polyester extinction resin RB 6083, 5 parts of polysiloxane derivatives, 4 parts of poly-octylamide, 70 parts of alkylphenol polyoxyethylene NP-1018, 70 parts of carborundum with the particle size of 70-110 meshes and 45 parts of barium sulfate; all in parts by mass.
The preparation method of the seal material comprises the following specific steps:
respectively heating SBS modified 70# emulsified asphalt and glycidyl ether epoxy modified acrylic acid emulsion graft modified acrylic acid to 55 ℃, mixing, shearing at a shearing rate of 2800 r/min, adding beta, beta' -dimethylaminoethoxy-4, 4,5, 5-tetramethyl-1, 3, 2-dioxaborolan, and after shearing for 8min, adding pure polyester matting resin RB608, polysiloxane derivatives, poly octylamide, alkylphenol polyoxyethylene NP-10, emery and barium sulfate; and then shearing to obtain the epoxy sealing material, and then shearing for 35 min at a shearing rate of 6500 r/min to obtain the epoxy sealing material.
Spraying the sealing material on the base surface, curing to obtain the sealing layer, and spraying the obtained sealing layer on the asphalt pavement with a spraying vehicle under high pressure with the dosage of 1.2 kg/m2。
Example 3
The seal layer material comprises the following components: 60 parts of glycidyl ether epoxy modified acrylic emulsion graft modified acrylic acid, 40 parts of 70# emulsified asphalt, 8 parts of beta, beta' -dimethylaminoethoxy-4, 4,5, 5-tetramethyl-1, 3, 2-dioxaborolan, 8 parts of pure polyester extinction resin RB 6085 parts, 6 parts of polysiloxane derivatives, 5 parts of polyoctanamide, 5 parts of fatty alcohol polyoxyethylene ether AEO-922, 80 parts of quartz sand with the particle size of 70-110 meshes and 60 parts of talcum powder; all in parts by mass.
The preparation method of the seal material comprises the following specific steps:
respectively heating 70# emulsified asphalt and glycidyl ether epoxy modified acrylic acid emulsion graft modified acrylic acid to 60 ℃, mixing, shearing at a shearing rate of 3000 r/min, adding beta, beta' -dimethylaminoethoxy-4, 4,5, 5-tetramethyl-1, 3, 2-dioxaborolan, shearing for 10min, and then adding pure polyester matting resin RB608, polysiloxane derivatives, polyoctanamide, fatty alcohol polyoxyethylene ether AEO-9, quartz sand and talcum powder; and then shearing to obtain the epoxy sealing material, and then shearing for 45min at a shearing rate of 8000 revolutions per minute to obtain the epoxy sealing material.
Spraying the sealing material on the base surface, curing to obtain the sealing layer, and spraying the obtained sealing layer on the asphalt pavement with a spraying vehicle under high pressure, wherein the amount of the sealing layer is 1.3kg/m2。
Performance testing
The appearance, adhesive strength at 25 ℃, adhesive strength at 40 ℃, surface dry time at 25 ℃, tack dry time at 25 ℃, barrier properties, skid resistance, abrasion resistance (wet wheel abrasion), and marshall stability after painting of the seal materials prepared in examples 1 to 3 were tested, and the results are shown in table 1;
wherein the appearance detection method is visual inspection;
detecting the bonding strength at 25 ℃ and the bonding strength at 40 ℃ according to appendix B of CJJ139-2010 urban bridge deck waterproof engineering technical specification;
the surface drying time at 25 ℃ and the actual drying time at 25 ℃ are detected according to GB/T16777-2008 test method for waterproof building coatings;
the impermeability is detected according to a T0971-2008 asphalt pavement water seepage coefficient test method;
the penetration depth is measured by core drilling and sampling and a vernier caliper;
the skid resistance is detected according to a test method for determining the friction coefficient of the road surface by a T0964-2008 pendulum instrument;
the wear resistance (wet wheel wear) and Marshall stability after brushing were tested according to JTG E20-2011 test Specification for road engineering asphalt and asphalt mixtures.
As can be seen from Table 1, examples 1 to 3The seal material has uniform appearance and no oil accumulation or oil spots; the bonding strength at 25 ℃ is 1.8-2.1 MPa; the bonding strength is 1.1-1.4Mpa at 40 ℃; surface drying time at 25 ℃ is 1.6-2h, and real drying time at 25 ℃ is 4-7 h; the impermeability (increase) was 100%; a slip resistance (BPN) of 67-75; the wear resistance (wet abrasion) is 210-2(ii) a The Marshall stability is 8.7-9.1 KN. The sealing material disclosed by the invention is good in compatibility, high in bonding strength, fast in curing time, short in curing time, good in impermeability, good in skid resistance, good in wear resistance and high in Marshall stability. In conclusion, the sealing material has good embedding effect on the pavement, can maintain good service state of the asphalt pavement and prolong the service life of the asphalt pavement.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (26)
1. The seal coat material is characterized by comprising, by mass, 40-70 parts of glycidyl ether epoxy modified acrylic emulsion graft modified acrylic acid, 25-40 parts of asphalt, 1-6 parts of latent curing agent, 2-15 parts of delustering agent, 3-7 parts of defoaming agent, 2-5 parts of dispersing agent, 12-24 parts of film forming agent, 50-80 parts of fine sand and 30-70 parts of filler; the asphalt is 70# emulsified asphalt or SBS modified 70# emulsified asphalt, and the latent curing agent is beta, beta' -dimethylaminoethoxy-4, 4,5, 5-tetramethyl-1, 3, 2-dioxaborolan.
2. The seal material of claim 1, wherein the matting agent is a pure polyester matting resin.
3. The seal material according to claim 1 or 2, wherein the defoaming agent is a silicone-based defoaming agent.
4. The seal material of claim 1 or 2, wherein the dispersant is an aliphatic amide dispersant.
5. The seal material of claim 3, wherein the dispersant is an aliphatic amide dispersant.
6. The seal material of claim 1, 2 or 5, wherein the film former is alkylphenol ethoxylates TX-10, alkylphenol ethoxylates NP-10 or fatty alcohol polyoxyethylene AEO-9.
7. The seal material of claim 3, wherein the film former is alkylphenol ethoxylate TX-10, alkylphenol ethoxylate NP-10, or fatty alcohol ethoxylate AEO-9.
8. The seal material of claim 4, wherein the film former is alkylphenol ethoxylate TX-10, alkylphenol ethoxylate NP-10, or fatty alcohol ethoxylate AEO-9.
9. The seal material of claim 1, 2, 5, 7 or 8, wherein the fine sand is quartz sand or silicon carbide.
10. The seal material of claim 3, wherein the fine sand is quartz sand or silicon carbide.
11. The seal material of claim 4, wherein the fine sand is quartz sand or silicon carbide.
12. The seal material of claim 6, wherein the fine sand is quartz sand or silicon carbide.
13. The seal material of claim 1, 2, 5, 7, 8, 10, 11 or 12, wherein the fine sand has a particle size of 70-110 mesh.
14. The seal material of claim 3, wherein the fine sand has a particle size of 70-110 mesh.
15. The seal material of claim 4, wherein the fine sand has a particle size of 70-110 mesh.
16. The seal material of claim 6, wherein the fine sand has a particle size of 70-110 mesh.
17. The seal material of claim 9, wherein the fine sand has a particle size of 70-110 mesh.
18. A seal material according to claim 1, 2, 5, 7, 8, 10, 11, 12, 14, 15, 16 or 17, wherein the filler is barium sulphate, talc or kaolin.
19. The seal material of claim 3, wherein the filler is barium sulfate, talc, or kaolin.
20. The seal material of claim 4, wherein the filler is barium sulfate, talc, or kaolin.
21. The seal material of claim 6, wherein the filler is barium sulfate, talc, or kaolin.
22. The seal material of claim 9, wherein the filler is barium sulfate, talc, or kaolin.
23. The seal material of claim 13, wherein the filler is barium sulfate, talc, or kaolin.
24. A method of making a seal material according to any one of claims 1 to 23, comprising the steps of:
adding glycidyl ether epoxy modified acrylic emulsion graft modified acrylic acid into asphalt, heating to 50-60 ℃, mixing, then shearing, adding a latent curing agent into emulsified asphalt in the shearing process, shearing, and adding a delustering agent, a defoaming agent, a dispersing agent, a film forming agent, fine sand and a filler into the asphalt; and then shearing to obtain the product.
25. The method for preparing the seal material according to claim 24, comprising: respectively heating asphalt and glycidyl ether epoxy modified acrylic acid emulsion graft modified acrylic acid to 50-60 ℃, mixing, then shearing at the shearing rate of 2500-.
26. Use of the seal coat material of any one of claims 1 to 23 in asphalt pavement maintenance.
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| CN109135486B (en) * | 2018-08-15 | 2020-08-04 | 重庆市智翔铺道技术工程有限公司 | High-wear-resistance sand-containing fog sealing layer material and preparation method and application thereof |
| CN109777218B (en) * | 2018-12-27 | 2021-10-26 | 武汉华中科大新材料股份有限公司 | Material for preventive maintenance of road and construction method thereof |
| CN111411556A (en) * | 2020-04-03 | 2020-07-14 | 南京兴佑交通科技有限公司 | Multilayer fine surface preventive maintenance method |
| CN112646494A (en) * | 2021-01-14 | 2021-04-13 | 南京林业大学 | Anti-dazzle road sealing material and preparation method thereof |
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