CN112266697A - Self-adaptive anti-icing pavement - Google Patents
Self-adaptive anti-icing pavement Download PDFInfo
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- CN112266697A CN112266697A CN202010967964.9A CN202010967964A CN112266697A CN 112266697 A CN112266697 A CN 112266697A CN 202010967964 A CN202010967964 A CN 202010967964A CN 112266697 A CN112266697 A CN 112266697A
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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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
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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
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Abstract
The invention discloses a self-adaptive anti-icing paved road surface, which comprises a polyurethane elastic pavement layer paved on the road surface and an epoxy resin waterproof coating coated on the surface of the polyurethane elastic pavement layer; the epoxy resin waterproof coating is obtained by mixing and curing a component A and a component B, wherein the component A comprises the following components in parts by mass: 65-110 parts of epoxy resin, 10-35 parts of 200-400-mesh polyurethane particles, 20-45 parts of acrylic resin, 3-9 parts of an accelerator, 8-18 parts of a diluent and 30-60 parts of an inorganic filler; the component B comprises the following components in parts by mass: 5-10 parts of isocyanate curing agent and 10-20 parts of modified polyamine curing agent. The self-adaptive anti-icing pavement improves the durability of the pavement and effectively inhibits the accumulated snow and the icing of the pavement.
Description
Technical Field
The invention relates to the technical field of pavement, in particular to a self-adaptive anti-icing pavement.
Background
Winter roads, bridges and some special road sections, such as: under the conditions of sudden air temperature drop, humid air and large fog, the road and bridge surfaces are easy to form ice layers to cause sudden traffic accidents or road and bridge traffic jam and the like, which always troubles the traffic departments of all countries in the world. The direct economic losses due to various abnormal conditions of winter climate change and snow (frost) icing on road surfaces of roads and bridges can reach billions of dollars each year. Therefore, the effective treatment of the snow (frost) on the road surface and the road maintenance in winter are highly regarded by various countries, and a great deal of research is carried out for the effective treatment and the road maintenance in winter, and various methods for inhibiting the snow on the road surface are explored. These methods are classified into two major categories, passive and active.
In the method for passively suppressing the snow on the road surface from being frozen, it is most known to spread a snow melting agent after snowing, and then passively spread a chemical agent on the road surface to lower the melting point of the snow and ice, so as to melt the snow and ice, thereby making it clear of the snow and ice. The ice and snow melting agent commonly used at home and abroad mainly comprises salts and alcohols. The alcohols have the phenomenon of anti-icing, the effect is not good, and the comprehensive cost is greatly increased; the salts are corrosive and easy to corrode and destroy road structures and motor vehicles, and also pollute the land, water and atmosphere and destroy the ecological environment. Still other passive methods are manual cleaning methods, spreading sandstone fly ash materials and mechanical cleaning methods. The ice and snow can be melted by utilizing the heat generated by hot water, terrestrial heat, gas, electricity and the like, and the method is also one of the technical methods for passively melting the snow, but the energy consumption is too large, and the engineering technology is difficult to implement.
The technology for actively inhibiting ice and snow on the road surface mainly comprises a self-stress elastic road surface pavement technology, a conductive pavement ice and snow melting technology and an energy conversion type ice and snow melting technology (such as industrial electric energy, solar energy, geothermal energy and the like).
The self-stress elastic pavement paving technology is an active ice breaking technology which is formed in recent years, and by utilizing the characteristic that the local deformation of the material of the ice breaking pavement layer is stronger, ice and snow are broken and melted through the self-stress generated under the action of external load during pavement paving, so that the accumulated snow and ice on the pavement are effectively inhibited, the anti-skid performance of the pavement under the condition of low-temperature snowfall in winter is improved, and the driving safety of a running vehicle after the pavement is frozen in winter is ensured.
Chinese patent publication No. CN101219870A (published as 2008/7/16) discloses a rubber particle asphalt pavement material and a method for paving a rubber particle asphalt pavement, wherein a certain amount of rubber particles are added to the asphalt pavement material, so that the deformation capability of the pavement can be effectively improved, the adhesion state of ice and snow to the pavement can be improved, and snow and ice on the pavement can be effectively inhibited by self-stress under the action of vehicle load. However, the rubber particles have large elastic deformation capability and are not obviously embedded and extruded with aggregates, so that the problem of loosening of the mixture is easily caused, and the durability of a pavement structure is influenced.
Chinese patent publication No. CN102432228B (published as 2012, 5, month and 2) discloses a pavement self-icebreaking anti-skid paving layer mixture and a preparation method thereof, wherein rubber particles, a polyurethane adhesive, fibers, a hydrophobic material and a drier are mixed in proportion to prepare the pavement self-icebreaking anti-skid paving layer mixture, and the pavement self-icebreaking anti-skid paving layer mixture is paved on a pavement, so that the anti-skid performance of the pavement under the low-temperature snowfall condition in winter is improved, and the pavement is simple to pave and has strong durability. Although the cementing material and the aggregate have strong caking property in the mixture, the pavement formed by the mixture has a plurality of gaps, and in cold winter, moisture is easy to permeate into the gaps and freezes and expands under the low-temperature condition, so that the pavement is loose and damaged.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a self-adaptive anti-icing pavement, which improves the durability of the pavement and effectively inhibits the accumulated snow and the icing of the pavement.
In order to solve the technical problems, the invention provides the following technical scheme:
the invention provides a self-adaptive anti-icing paved road surface, which comprises a polyurethane elastic pavement layer paved on the road surface and an epoxy resin waterproof coating coated on the surface of the polyurethane elastic pavement layer;
the epoxy resin waterproof coating is obtained by mixing and curing a component A and a component B, wherein the component A comprises the following components in parts by mass: 65-110 parts of epoxy resin, 10-35 parts of 200-400-mesh polyurethane particles, 20-45 parts of acrylic resin, 3-9 parts of an accelerator, 8-18 parts of a diluent and 30-60 parts of an inorganic filler;
the component B comprises the following components in parts by mass: 5-10 parts of isocyanate curing agent and 10-20 parts of modified polyamine curing agent.
Further, the epoxy resin is selected from one or more of bisphenol A type, bisphenol F type and novolac epoxy resin, and the epoxy value of the epoxy resin is 0.4-0.6.
Further, the diluent is a reactive diluent, and the reactive diluent is selected from one or more of propylene oxide o-tolyl ether, o-tolyl glycidyl ether, hexanediol diglycidyl ether, polypropylene glycol diglycidyl ether, ethylene glycol diglycidyl ether or butanediol diglycidyl ether.
Further, the accelerator is benzyl dimethylamine, 2-ethyl-4-methylimidazole, 2-methylimidazole, dimethylaminocresol, DMP-20 or DMP-30.
Further, the inorganic filler is selected from one or more of calcium carbonate, silica powder, talcum powder, barium sulfate, diatomite and mica powder.
Further, the acrylic resin is organic fluorine modified acrylic resin and/or organic silicon modified acrylic resin.
Further, the modified polyamine curing agent is prepared from ethylenediamine, paraformaldehyde and phenol through a Mannich reaction.
Furthermore, the thickness of the polyurethane elastic paving layer is 1-4 cm, and the thickness of the epoxy resin waterproof coating is 0.2-1 cm.
The polyurethane elastic paving layer is formed by uniformly mixing and stirring materials including elastic particles, polyurethane adhesive and the like and then paving the mixture on a road surface, wherein the elastic particles can be rubber particles. The polyurethane elastic pavement layer can adopt an elastic ice breaking layer in the prior art, and as an example, the polyurethane elastic pavement layer can be made of a polyurethane rubber particle mixture described in CN 103058585B.
Compared with the prior art, the invention has the beneficial effects that:
according to the epoxy resin waterproof coating, the acrylic resin is added into the epoxy resin matrix, so that the waterproof performance of the epoxy resin coating is improved, the 200-400-mesh polyurethane particles and the inorganic filler are added, so that the toughness of the coating is improved, and the defect that the epoxy resin is poor in toughness and easy to crack is overcome. According to the invention, the epoxy resin waterproof coating is coated on the surface of the polyurethane elastic pavement layer, so that the excellent waterproof performance of the epoxy resin waterproof coating prevents moisture from permeating into gaps of the polyurethane elastic pavement layer, the problems of loose particles of the polyurethane elastic pavement layer and the like caused by icing and expansion of the moisture are avoided, and the epoxy resin waterproof coating has good weather resistance and toughness and can be used for a long time without brittle fracture.
Drawings
FIG. 1 is a schematic structural view of an adaptive ice protection pavement of the present invention;
wherein: 1. a common road surface; 2. a polyurethane elastic paving layer; 3. epoxy waterproof coating.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
Example 1
The embodiment provides a self-adaptive anti-icing paved road surface, which comprises a polyurethane elastic pavement layer with the thickness of 2cm paved on a common road surface and an epoxy resin waterproof coating with the thickness of 1cm coated on the surface of the polyurethane elastic pavement layer;
the polyurethane elastic paving layer is prepared according to the formula of example 1 in CN 103058585B;
the epoxy resin waterproof coating is obtained by mixing and curing a component A and a component B, wherein the component A comprises the following components in parts by mass: 85 parts of bisphenol A epoxy resin, 25 parts of 200-400-mesh polyurethane particles, 30 parts of organic fluorine modified acrylic resin, 8 parts of DMP-20 accelerator, 12 parts of propylene oxide o-tolyl ether and 55 parts of calcium carbonate;
the component B comprises the following components in parts by mass: 10 parts of isocyanate curing agent and 15 parts of modified polyamine curing agent.
Example 2
The embodiment provides a self-adaptive anti-icing paved road surface, which comprises a polyurethane elastic pavement layer with the thickness of 2cm paved on a common road surface and an epoxy resin waterproof coating with the thickness of 1cm coated on the surface of the polyurethane elastic pavement layer;
the polyurethane elastic paving layer is prepared according to the formula of example 1 in CN 103058585B;
the epoxy resin waterproof coating is obtained by mixing and curing a component A and a component B, wherein the component A comprises the following components in parts by mass: 100 parts of bisphenol F epoxy resin, 20 parts of 200-400-mesh polyurethane particles, 40 parts of organic silicon modified acrylic resin, 5 parts of DMP-30 accelerator, 12 parts of o-tolyl glycidyl ether and 50 parts of talcum powder;
the component B comprises the following components in parts by mass: 10 parts of isocyanate curing agent and 12 parts of modified polyamine curing agent.
Example 3
The embodiment provides a self-adaptive anti-icing paved road surface, which comprises a polyurethane elastic pavement layer with the thickness of 2cm paved on a common road surface and an epoxy resin waterproof coating with the thickness of 1cm coated on the surface of the polyurethane elastic pavement layer;
the polyurethane elastic paving layer is prepared according to the formula of example 1 in CN 103058585B;
the epoxy resin waterproof coating is obtained by mixing and curing a component A and a component B, wherein the component A comprises the following components in parts by mass: 70 parts of novolac epoxy resin, 30 parts of 200-400-mesh polyurethane particles, 45 parts of organic fluorine modified acrylic resin, 9 parts of 2-ethyl-4-methylimidazole, 8 parts of polypropylene glycol diglycidyl ether and 50 parts of barium sulfate;
the component B comprises the following components in parts by mass: 10 parts of isocyanate curing agent and 15 parts of modified polyamine curing agent.
Comparative example
The comparative example provides a self-adaptive anti-icing paved road surface, which comprises a polyurethane elastic pavement layer with the thickness of 2cm, wherein the polyurethane elastic pavement layer is paved on a common road surface; the polyurethane elastic paving layer was prepared according to the formulation of example 1 in CN 103058585B.
1. Ice breaking performance detection
Pouring the raw materials of the polyurethane elastic layer into a mould, preparing a test piece with the thickness of 2cm by a vibration compaction method, preparing epoxy resin waterproof paint and coating the epoxy resin waterproof paint on the surface of the test piece in a brush mode to obtain a coating with the thickness of 1 cm. And then, curing the test piece in a curing box at the temperature of 20 +/-2 ℃ for 24 hours.
A test piece of 20cm multiplied by 20cm is adopted to carry out an ice breaking experiment, the experiment temperature is 0 ℃, 5 ℃, 10 ℃, 15 ℃ and 20 ℃, and the loading load is 1kN, 1.5kN and 2kN respectively.
The results show that all groups can realize the crushing of the ice layer with the thickness of 3mm under the conditions of-10 ℃ and 1kN, and the crushing rate reaches 80 percent. This shows that the pavement of the invention has good self-stress ice breaking function.
2. Resistance to water penetration
A water seepage resistance experiment is carried out by adopting a test piece of 20cm multiplied by 20cm, 10ml of water is sprinkled on the surface of the test piece, and the permeability of the test piece to the water is tested after 10min at 25 +/-2 ℃.
The results show that the permeability of the test pieces of comparative example to water reaches over 99%, while the permeability of the test pieces of examples 1-3 to water is between 3-8%.
3. Water resistance
A test piece of 20cm multiplied by 20cm is adopted to carry out a water resistance experiment, 10ml of water is sprinkled on the surface of the test piece, water stains on the surface of the test piece are wiped at 25 +/-2 ℃ for 10min, the test piece is frozen at minus 10 ℃ for 24h, then the test piece is taken out, an ice layer shown is removed, and then the mechanical properties of the test piece before and after freezing are tested.
The results show that the tensile strength of the test pieces of examples 1 to 3 was reduced by 8% to 13%, while the tensile strength of the test piece of comparative example was reduced by 39%.
The experiment results show that the polyurethane elastic paving layer is coated with the epoxy resin waterproof coating, so that the waterproof coating has excellent waterproof performance, prevents moisture from permeating into gaps of the polyurethane elastic paving layer, and avoids reduction of mechanical performance of the polyurethane elastic paving layer caused by icing and expansion of the moisture.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (8)
1. The self-adaptive anti-icing paved road surface is characterized by comprising a polyurethane elastic pavement layer paved on the road surface and an epoxy resin waterproof coating coated on the surface of the polyurethane elastic pavement layer;
the epoxy resin waterproof coating is obtained by mixing and curing a component A and a component B, wherein the component A comprises the following components in parts by mass: 65-110 parts of epoxy resin, 10-35 parts of 200-400-mesh polyurethane particles, 20-45 parts of acrylic resin, 3-9 parts of an accelerator, 8-18 parts of a diluent and 10-20 parts of an inorganic filler;
the component B comprises the following components in parts by mass: 5-10 parts of isocyanate curing agent and 10-20 parts of modified polyamine curing agent.
2. The adaptive ice-protection pavement according to claim 1, wherein the epoxy resin is one or more selected from bisphenol A type, bisphenol F type and novolac epoxy resin, and the epoxy value of the epoxy resin is 0.4-0.6.
3. The adaptive ice protection pavement according to claim 1, wherein the diluent is a reactive diluent, and the reactive diluent is one or more selected from propylene oxide o-tolyl ether, o-tolyl glycidyl ether, hexanediol diglycidyl ether, polypropylene glycol diglycidyl ether, ethylene glycol diglycidyl ether, or butanediol diglycidyl ether.
4. The adaptive ice protection pavement according to claim 1, wherein the accelerator is benzyldimethylamine, 2-ethyl-4-methylimidazole, 2-methylimidazole, dimethylaminocresol, DMP-20 or DMP-30.
5. The adaptive ice-protection paving according to claim 1, wherein the inorganic filler is selected from one or more of calcium carbonate, silica powder, talcum powder, barium sulfate, diatomite and mica powder.
6. The adaptive ice-protection pavement according to claim 1, wherein the acrylic resin is an organic fluorine modified acrylic resin and/or an organic silicon modified acrylic resin.
7. The adaptive anti-icing paved pavement of claim 1, wherein the modified polyamine curing agent is prepared by Mannich reaction of ethylenediamine, paraformaldehyde and phenol.
8. The adaptive anti-icing paved road surface according to claim 1, wherein the thickness of the polyurethane elastic pavement layer is 1-4 cm, and the thickness of the epoxy resin waterproof coating is 0.2-1 cm.
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP7220831B1 (en) * | 2022-10-05 | 2023-02-10 | 正晴 秋葉 | Snow-melting paint composition |
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