CN115584202A - Silicon modified asphalt fog sealing layer material and preparation method thereof - Google Patents
Silicon modified asphalt fog sealing layer material and preparation method thereof Download PDFInfo
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- CN115584202A CN115584202A CN202211187101.5A CN202211187101A CN115584202A CN 115584202 A CN115584202 A CN 115584202A CN 202211187101 A CN202211187101 A CN 202211187101A CN 115584202 A CN115584202 A CN 115584202A
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
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Abstract
The invention discloses a silicon modified asphalt fog sealing layer material which comprises the following components in parts by mass: nano silicon dioxide, asphalt emulsion, organic silicon resin, thermosetting acrylic resin, superfine sand, coarse sand and an organic solvent; emulsifier, suspending agent, regenerant, epoxy resin, adhesion promoter and auxiliary agent; the invention also provides a preparation method of the silicon modified asphalt fog sealing layer material, which comprises the following steps: s1, uniformly mixing according to a formula, and adding the mixture into a solvent to prepare a glue solution; s2, taking the glue forming liquid for curing, and obtaining the transparent composite material after curing is completed; and S3, putting the transparent composite material into the melted modified material to prepare the fog seal asphalt pavement curing agent, wherein the main materials are nano silicon dioxide, modified asphalt mixture organic silicon resin and thermosetting acrylic resin, and the formed modified emulsified asphalt is used in the fog seal material in the field of pavement curing and can effectively improve the water seepage resistance and the skid resistance of the pavement.
Description
Technical Field
The invention relates to the technical field of road materials, in particular to a silicon modified asphalt fog sealing layer material and a preparation method thereof.
Background
The development of the fog sealing technology in China is relatively late, and the research on corresponding fog sealing materials is lacked. The preventive maintenance material for the fog sealing layer can be divided into the following materials according to different properties: common emulsified asphalt, modified emulsified asphalt, regenerants, combinations of the above materials and the like. The common emulsified asphalt is limited in use in a large amount due to single performance, and the regenerant has good service performance but relatively high price, so that the maintenance cost is increased. With the increasing maturity of the development technology of the modified emulsified asphalt, the modified emulsified asphalt is applied to the fog sealing layer maintenance technology, plays a better role, is widely concerned and has high cost performance. In addition, the existing fog sealing layer material has the problems of poor stability, poor adhesion with a road surface, poor permeability, low demulsification speed, poor waterproof effect, environmental pollution and the like in the using process.
The Fog Seal technology (Fog Seal) is a preventive maintenance technology for sealing the pores of road surface, stabilizing loose aggregate and repairing the aged road surface by spraying the fluid materials such as emulsified asphalt, modified emulsified asphalt or asphalt pavement curing agent onto the asphalt pavement mechanically (or manually brushing the materials) to form a thin protective layer on the road surface.
Based on an analysis of the fog seal principle and function, an ideal fog seal material should have or partially have the following properties:
(1) The aggregate has good fluidity at normal temperature and is easy to be evenly coated;
(2) Good adhesion to aggregate;
(3) The fog seal material must have good adhesion and consolidation capability to the surface loose aggregate;
(4) The fog sealing layer material has good quick-drying performance after being coated, so as to be beneficial to quickly opening traffic;
(5) In order to exert the function of improving the road appearance, the fog sealing layer material must have excellent wear-resisting performance;
(6) The fog sealing layer has good water sealing effect, so that the water stability of the pavement mixture is improved;
(7) The fog sealing layer material should contain a regenerant component, and the regenerant component is fused with aged asphalt through permeation and diffusion effects in the long-term use process to supplement aromatic components and colloid components in the fog sealing layer material. After aging by natural action, the regenerated components still have certain regeneration performance.
The existing material adopts the waterborne epoxy resin and the curing agent, so that the price is high, the preparation process is complex, the price is high, the waterborne epoxy resin and the curing agent are mixed to generate a curing reaction, the viscosity is increased, the construction retention time is short, and the construction on a construction site is not facilitated; one of kerosene, diesel oil, rape oil or engine oil is adopted as a permeation aid, and the technical problem of environmental pollution caused by a large amount of use is also existed.
Disclosure of Invention
The invention aims to provide a silicon modified asphalt fog sealing layer material to solve the problems in the background art, and the reasonable proportion of nano silicon dioxide, asphalt emulsion organic silicon resin and thermosetting acrylic resin is adopted to ensure that a thin layer formed after asphalt emulsion breaking has better anti-shear and destructive capabilities; the modified asphalt is prepared by mixing natural asphalt emulsion, superfine sand and coarse sand, has good stability, has good adhesive force, wear resistance and water resistance to concrete or asphalt pavement, has the advantages of good affinity of the organic silicon resin and the epoxy resin, easy coating, good weather resistance, fast drying, high firmness and the like, and improves the wear resistance and the adhesion of the modified emulsified asphalt after film forming.
In order to achieve the purpose, the invention provides the following technical scheme:
a silicon modified asphalt fog sealing layer material comprises the following components in parts by mass: 20-35 parts of nano silicon dioxide, 25-40 parts of asphalt emulsion, 35-55 parts of organic silicon resin, 5-40 parts of thermosetting acrylic resin, 20-40 parts of extra-fine sand, 55-75 parts of coarse sand and 30-40 parts of organic solvent;
0.01-2 parts of emulsifier, 1-11 parts of suspending agent, 1-1.2 parts of regenerant, 0.1-6 parts of epoxy resin, 0.05-2.5 parts of adhesion promoter and 0.01-0.15 part of assistant.
Preferably, the silicone resin main body comprises activated substance particles after film forming, and the thermosetting acrylic resin is an auxiliary film forming substance and can improve the flexibility and scratch resistance of the coating after being added.
Preferably, the epoxy resin is used for promoting adhesion and improving chemical resistance of a paint film; the adhesion promoter can be BFK-G to enhance adhesion; the aid may be BYK052 to reduce foam generation.
Preferably, the particle size range of the superfine sand is 0.15-1.18mm, and the particle size range of the coarse sand is 1.18-2.36mm.
Preferably, the particle size of the nano-silica is 1nm-100nm, and the modified asphalt containing the nano-silica is rubber modified asphalt.
Preferably, the suspending agent is selected from one or more of diatomite, kaolin, magnesium aluminosilicate and bentonite; the regenerant is any one or more of kerosene, phenol, polyphenol, naphthalene, anthracene and polyaromatic hydrocarbon.
Preferably, the diatomite contains amorphous silicon dioxide (Sio 2) more than 75%, has a loss on ignition less than 6%, has a specific surface area more than 15m/3ml, contains 85% of Cyclotella microcystis, has a diatom particle size of 15-25mm, a pH value of 6-8, a compact density of 0.3g/cm < 3 > +/-0.1, and has a particle size less than 30 μm.
The invention also provides a preparation method of the silicon modified asphalt fog sealing layer material, which comprises the following steps:
s1, taking nano silicon dioxide, organic silicon resin, thermosetting acrylic resin, nano silicon dioxide, extra-fine sand, coarse sand and an organic solvent according to a formula, uniformly mixing, and adding the mixture into the solvent to prepare a glue solution;
s2, taking the formed glue solution, baking the formed glue solution in an oven at 135 ℃ for 60 minutes to cure the formed glue solution, and obtaining the transparent composite material after curing is completed;
and S3, adding the transparent composite material into the melted modified material, sequentially adding an emulsifier, a suspending agent, a regenerant, epoxy resin, an adhesion promoter and an auxiliary agent, and stirring at a high speed for 20-30 min to obtain the fog seal asphalt pavement curing agent.
Preferably, the materials in the step S1 are added into hot water for preheating, the temperature of the hot water is set to be 85-95 degrees, after preheating is finished, the compound emulsifier aqueous solution and the silicon modified asphalt product are added, and emulsification is carried out for 5 minutes to prepare the fog seal modified emulsified asphalt.
Compared with the prior art, the invention has the beneficial effects that:
1. the reasonable proportion of the nano silicon dioxide, the asphalt emulsion organic silicon resin and the thermosetting acrylic resin is selected, so that a thin layer formed after asphalt demulsification has better shear failure resistance; the modified asphalt is prepared by mixing natural asphalt emulsion, superfine sand and coarse sand, has good stability, has good adhesive force, wear resistance and water resistance to concrete or asphalt pavement, has the advantages of good affinity of the organic silicon resin and the epoxy resin, easy coating, good weather resistance, fast drying, high firmness and the like, and improves the wear resistance and the adhesion of the modified emulsified asphalt after film forming.
2. The preparation method is simple and convenient to use, and the prepared fog seal modified emulsified asphalt has good storage stability, better water dilution performance, environmental protection in use, good surface consolidation performance after construction, good wear resistance, difficulty in being stuck by wheels, short traffic sealing time, improved construction efficiency, good water sealing function, prevention of water damage of asphalt pavement, protection of pavement structure, prolonged service life of roads and improvement of road appearance.
3. The main materials of the invention are nano silicon dioxide, modified asphalt mixture organic silicon resin and thermosetting acrylic resin, the preparation method is simple, and the formed modified emulsified asphalt is used in the fog sealing layer material in the field of pavement maintenance, and can effectively improve the water seepage resistance and the skid resistance of the pavement.
Drawings
FIG. 1 is a flow chart of the preparation of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution:
example 1
A silicon modified asphalt fog sealing layer material comprises the following components in parts by mass: 20 parts of nano silicon dioxide, 25 parts of asphalt emulsion, 35 parts of organic silicon resin, 5 parts of thermosetting acrylic resin, 20 parts of extra-fine sand, 55 parts of coarse sand and 30 parts of organic solvent;
0.01 percent of emulsifier, 1 percent of suspending agent, 1 percent of regenerant, 0.1 percent of epoxy resin, 0.05 percent of adhesion promoter and 0.01 percent of auxiliary agent.
Specifically, the organic silicon resin main body comprises activated substance particles after film forming, and the thermosetting acrylic resin is an auxiliary film forming substance and can improve the flexibility, 38860 and scratch resistance of the coating after being added.
Specifically, the epoxy resin is used for promoting adhesion and improving chemical resistance of a paint film; the adhesion promoter can be BFK-G to enhance adhesion; the adjuvant may be BYK052 to reduce foam generation.
Specifically, the particle size range of the superfine sand is 0.15-1.18mm, and the particle size range of the coarse sand is 1.18-2.36mm.
Specifically, the particle size of the nano-silica is 1nm-100nm, and the modified asphalt containing the nano-silica is rubber modified asphalt.
Specifically, the suspending agent is selected from one or more of diatomite, kaolin, magnesium aluminosilicate and bentonite; the regenerant is any one or more of kerosene, phenol, polyphenol, naphthalene, anthracene and polyaromatic hydrocarbon.
Specifically, the content of amorphous silicon dioxide (Sio 2) in the diatomite is more than 75%, the ignition loss is less than 6%, the specific surface area is more than 15m/3ml, the Cyclotella tenera accounts for 85%, the particle size of the diatomite is 15-25mm, the pH value is 6-8, the compact bulk density is 0.3g/cm < 3 +/-0.1, and the particle size is less than 30 μm.
A preparation method of a silicon modified asphalt fog sealing layer material comprises the following steps:
s1, taking nano silicon dioxide, organic silicon resin, thermosetting acrylic resin, nano silicon dioxide, extra-fine sand, coarse sand and an organic solvent according to a formula, uniformly mixing, and adding the mixture into the solvent to prepare a glue solution;
s2, taking the formed glue solution, baking the formed glue solution in an oven at 135 ℃ for 60 minutes to cure the formed glue solution, and obtaining the transparent composite material after curing is completed;
and S3, adding the transparent composite material into the melted modified material, sequentially adding an emulsifier, a suspending agent, a regenerant, epoxy resin, an adhesion promoter and an auxiliary agent, and stirring at a high speed for 20-30 min to obtain the fog seal asphalt pavement curing agent.
Specifically, the materials in the step S1 are added into hot water for preheating, the temperature of the hot water is set to be 85-95 degrees, after preheating is completed, a compound emulsifier aqueous solution and a silicon modified asphalt product are added, and emulsification is carried out for 5 minutes to prepare the fog seal modified emulsified asphalt.
Example 2
A silicon modified asphalt fog sealing layer material comprises the following components in parts by mass: nano silicon dioxide 25, asphalt emulsion 30, organic silicon resin 40, thermosetting acrylic resin 10, superfine sand 25, coarse sand 60 and organic solvent 35;
0.05 percent of emulsifier, 3 percent of suspending agent, 1.1 percent of regenerant, 1 percent of epoxy resin, 1 percent of adhesion promoter and 0.05 percent of auxiliary agent.
Example 3
A silicon modified asphalt fog sealing layer material comprises the following components in parts by mass: 30 parts of nano silicon dioxide, 35 parts of asphalt emulsion, 45 parts of organic silicon resin, 15 parts of thermosetting acrylic resin, 30 parts of extra-fine sand, 65 parts of coarse sand and 40 parts of organic solvent;
emulsifier 1, suspending agent 8, regenerant 1.2, epoxy resin 3, adhesion promoter 2 and auxiliary agent 0.1.
Example 4
A silicon modified asphalt fog sealing layer material comprises the following components in parts by mass: nano silicon dioxide 35, asphalt emulsion 40, organic silicon resin 50, thermosetting acrylic resin 25, extra-fine sand 35, coarse sand 70 and organic solvent 30;
1.5 parts of emulsifier, 10 parts of suspending agent, 1.1 parts of regenerant, 5 parts of epoxy resin, 2.2 parts of adhesion promoter and 0.12 part of auxiliary agent.
Example 5
A silicon modified asphalt fog sealing layer material comprises the following components in parts by mass: nano silicon dioxide 35, asphalt emulsion 40, organic silicon resin 55, thermosetting acrylic resin 40, superfine sand 40, coarse sand 75 and organic solvent 40;
emulsifier 2, suspending agent 11, regenerant 1.2, epoxy resin 6, adhesion promoter 2.5 and assistant 0.15.
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | |
| Nano silicon dioxide | 20 | 25 | 30 | 35 | 35 |
| Asphalt emulsion | 25 | 30 | 35 | 40 | 40 |
| Silicone resin | 35 | 40 | 45 | 50 | 55 |
| Thermosetting acrylic resin | 5 | 10 | 15 | 25 | 40 |
| Ultra-fine sand | 20 | 25 | 30 | 35 | 40 |
| Coarse sand | 55 | 60 | 65 | 70 | 75 |
| Organic solvent | 30 | 35 | 40 | 30 | 40 |
| Emulsifying agent | 0.01 | 0.05 | 1 | 1.5 | 2 |
| Suspending agent | 1 | 3 | 8 | 10 | 11 |
| Regenerating agent | 1 | 1.1 | 1.2 | 1.1 | 1.2 |
| Epoxy resin | 0.1 | 1 | 3 | 5 | 6 |
| Adhesion promoter | 0.05 | 1 | 2 | 2.2 | 2.5 |
| Auxiliary agent | 0.01 | 0.05 | 0.1 | 0.12 | 0.15 |
In conclusion, the preparation method is simple and convenient to use, the prepared fog seal modified emulsified asphalt has good storage stability, better water dilutability, environmental protection in use, good surface consolidation performance after construction, good wear resistance, difficulty in being stuck by wheels, short traffic sealing time, improvement of construction efficiency, good water sealing function, prevention of water damage of asphalt pavement, protection of pavement structure, prolongation of service life of roads and improvement of road appearance.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The silicon modified asphalt fog sealing layer material is characterized by comprising the following components in parts by mass: 20-35 parts of nano silicon dioxide, 25-40 parts of asphalt emulsion, 35-55 parts of organic silicon resin, 5-40 parts of thermosetting acrylic resin, 20-40 parts of extra-fine sand, 55-75 parts of coarse sand and 30-40 parts of organic solvent;
0.01-2 parts of emulsifier, 1-11 parts of suspending agent, 1-1.2 parts of regenerant, 0.1-6 parts of epoxy resin, 0.05-2.5 parts of adhesion promoter and 0.01-0.15 part of auxiliary agent.
2. The silicone modified asphalt fog seal material of claim 1, wherein: the organic silicon resin main body comprises activated substance particles after film forming, and the thermosetting acrylic resin is an auxiliary film forming substance and can improve the flexibility 38860 and the scratch resistance of the coating after being added.
3. The silicone-modified asphalt fog seal material of claim 1, wherein: the epoxy resin is used for promoting the adhesive force and improving the chemical resistance of a paint film; the adhesion promoter can be BFK-G to enhance adhesion; the aid may be BYK052 to reduce foam generation.
4. The silicone-modified asphalt fog seal material of claim 1, wherein: the grain size range of the superfine sand is 0.15-1.18mm, and the grain size range of the coarse sand is 1.18-2.36mm.
5. The silicone modified asphalt fog seal material of claim 1, wherein: the particle size of the nano-silica is 1nm-100nm, and the modified asphalt containing the nano-silica is rubber modified asphalt.
6. The silicone modified asphalt fog seal material of claim 1, wherein: the suspending agent is selected from one or more of diatomite, kaolin, magnesium aluminosilicate and bentonite; the regenerant is any one or more of kerosene, phenol, polyphenol, naphthalene, anthracene and polyaromatic hydrocarbon.
7. The silicone-modified asphalt fog seal material of claim 6, wherein: the diatomite contains amorphous silicon dioxide (Sio 2) more than 75%, ignition loss less than 6%, specific surface area more than 15m/3ml, chlorella 85%, diatom particle size 15-25mm, pH 6-8, compact bulk density 0.3g/cm3 +/-0.1 and particle size less than 30 μm.
8. A method for preparing the silicone modified asphalt fog seal material according to any one of claims 1 to 7, wherein: the method comprises the following steps:
s1, taking nano silicon dioxide, organic silicon resin, thermosetting acrylic resin, nano silicon dioxide, extra-fine sand, coarse sand and an organic solvent according to a formula, uniformly mixing, and adding the mixture into the solvent to prepare a glue solution;
s2, taking the glue forming liquid, baking the glue forming liquid in an oven at 135 ℃ for 60 minutes for curing, and obtaining the transparent composite material after curing is completed;
and S3, adding the transparent composite material into the melted modified material, sequentially adding an emulsifier, a suspending agent, a regenerant, epoxy resin, an adhesion promoter and an auxiliary agent, and stirring at a high speed for 20-30 min to obtain the fog seal asphalt pavement curing agent.
9. The method for preparing the silica modified asphalt fog sealing layer material as claimed in claim 8, wherein: and (2) adding the material obtained in the step (S1) into hot water for preheating, wherein the temperature of the hot water is set to be 85-95 ℃, adding a compound emulsifier aqueous solution and a silicon modified asphalt product after preheating is finished, and emulsifying for 5 minutes to prepare the fog seal modified emulsified asphalt.
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