CN110437709A - Bituminous pavement heat-reflective coating and preparation method thereof - Google Patents

Bituminous pavement heat-reflective coating and preparation method thereof Download PDF

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Publication number
CN110437709A
CN110437709A CN201910694598.1A CN201910694598A CN110437709A CN 110437709 A CN110437709 A CN 110437709A CN 201910694598 A CN201910694598 A CN 201910694598A CN 110437709 A CN110437709 A CN 110437709A
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bituminous pavement
reflective coating
heat
mixture
preparation
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乔志刚
孙军
鞠英明
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Shanghai Nanxin Road Construction Co Ltd
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Shanghai Nanxin Road Construction Co Ltd
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    • C09D163/00Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/004Reflecting paints; Signal paints
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    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
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    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • C09D7/66Additives characterised by particle size
    • C09D7/69Particle size larger than 1000 nm
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C7/00Coherent pavings made in situ
    • E01C7/08Coherent pavings made in situ made of road-metal and binders
    • E01C7/32Coherent pavings made in situ made of road-metal and binders of courses of different kind made in situ
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
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    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
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    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/02Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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Abstract

The invention discloses a kind of bituminous pavement heat-reflective coating and preparation method thereof, which includes the first aqueous epoxy resins, the second aqueous epoxy resins, nano-titanium dioxide, nano silica, iron oxide red, delustering agent, dispersing agent and antilubricant;Compared to traditional asphalt road surface heat-reflective coating, bituminous pavement heat-reflective coating of the invention has higher intensity, adhesive capacity and durability, so as to be applied to the bituminous pavement of urban road intersection, to resist the percussion of vehicular load, it can be effectively reduced summer pavement temperature, the generation for reducing track disease, to extend the service life of bituminous pavement;Bituminous pavement heat-reflective coating of the invention reduces reduction of the coating to original road surface pore structure by the coating layer thickness under control different pitches road surface gradation types, microcosmic antiskid structure is provided by dispensing antilubricant simultaneously, antiskid is functional, to guarantee traffic safety.

Description

Bituminous pavement heat-reflective coating and preparation method thereof
Technical field
The invention belongs to technical field of road engineering, and in particular to a kind of bituminous pavement heat-reflective coating and its preparation side Method is more particularly to a kind of bituminous pavement solar heat reflection coating and preparation method thereof for urban road intersection.
Background technique
Track, to elapse, gather around packet be intersection region bituminous pavement typical disease, and basic reason is that bituminous concrete is anti- It cuts intensity and does not adapt to the special operating condition of intersection region bituminous pavement.In intersection region, vehicle operation and road surface lotus Carry feature and general road is dramatically different: serious canalized traffic, frequently braking and starting, speed is slow, down time is long.This spy Different operating condition makes intersection region bituminous pavement bear pole heavy traffic load, longer load action time and biggish Horizontal shear stresses.Especially in summer high temperature season, the high temperature that road surface continues 60 DEG C or more causes bituminous concrete shearing resistance strong Degree and rutting resistance sharply decline, and thus cause intersection region bituminous pavement and generate track, elapse, gather around the diseases such as packet, crack Evil.
Although extremely paying close attention to intersection region asphalt pavement rut disease problem both at home and abroad, and correlation is carried out and has ground Study carefully, but be to control the generation of track by improving bituminous concrete high-temperature stability mostly, such as uses modified pitch, hard The materials such as pitch, anti-rut agent are using bituminous concretes such as SMA.Although enhancing bituminous concrete rutting resistance can inhibit friendship The generation and development of prong region asphalt pavement rut, but in summer still pitch may be significantly reduced since pavement temperature is excessively high The rutting resistance of concrete, and then cause track disease.
Bituminous pavement is the higher material of thermal absorptivity (thermal absorptivity reaches 0.85-0.90).Summer continues hot spoke in the sun It penetrates under effect, bituminous pavement absorbs and have accumulated big energy, this makes bituminous pavement temperature be significantly larger than temperature: summer high temperature Season temperature is only 35-40 DEG C, but bituminous pavement temperature is up to 60-65 DEG C.As a kind of typical viscoelastic material, pitch is mixed Solidifying soil shear strength increases significant decaying with temperature.At this moment the shearing strength of bituminous concrete is only the 20- under the conditions of 25 DEG C 30%.As it can be seen that high temperature is one of the main reason for track generates.If asphalt surface hot reflection efficiency can be enhanced, reduce drip Green road surface thermal absorptivity, bituminous pavement temperature will be controlled to a certain extent, and bituminous concrete shearing strength will obtain favorably It ensures.
The frequent braking and starting bring of the unbearable intersection vehicle of traditional bituminous pavement heat-reflective coating Therefore intense impact in order to be solved the track disease of urban road intersection bituminous pavement by the way of active control, is badly in need of A kind of high-strength asphalt road surface heat-reflective coating being able to bear special load impact.
Summary of the invention
Aiming at the shortcomings in the prior art, primary and foremost purpose of the invention is to provide a kind of bituminous pavement heat-reflective coating.
A second object of the present invention is to provide the preparation methods of above-mentioned bituminous pavement heat-reflective coating.
In order to achieve the above objectives, solution of the invention is:
A kind of bituminous pavement heat-reflective coating comprising following component:
Preferably, the ratio of the first aqueous epoxy resins and the second aqueous epoxy resins is 2:1.
Preferably, nano-titanium dioxide is rutile-type, partial size 20-50nm.
Preferably, the partial size of nano silica is 5-10 μm.
Preferably, delustering agent is aqueous delustering agent.
Preferably, dispersing agent is the aqueous dispersion suitable for epoxy glue.
Preferably, antilubricant is glass-ceramic microballon, and mesh number is 40 mesh.
A kind of preparation method of above-mentioned bituminous pavement heat-reflective coating comprising following steps:
(1), nano-titanium dioxide is added in the first aqueous epoxy resins and is stirred, obtain the first mixture;
(2), nano silica is added in the first mixture and is stirred, obtain the second mixture;
(3), iron oxide red, dispersing agent and delustering agent are sequentially added in the second mixture and is stirred, obtain third mixture;
(4), the second aqueous epoxy resins are added in third mixture and are stirred, obtain aqueous epoxide resin paint;
(5), aqueous epoxide resin paint is brushed on the surface of bituminous pavement, obtains coating, 10min after the completion of brushing It is interior, antilubricant is spread in the surface of coating and is formed.
Preferably, in step (1), the time of stirring is 2 ± 0.5min.
Preferably, in step (2), the time of stirring is 1 ± 0.5min.
Preferably, in step (3), the time of stirring is 2 ± 0.5min.
Preferably, in step (4), the time of stirring is 2 ± 0.5min.
By adopting the above scheme, the beneficial effects of the present invention are:
The first, compared to traditional asphalt road surface heat-reflective coating, bituminous pavement heat-reflective coating of the invention is applied in satisfaction The ratio of aqueous epoxy resin emulsion and epoxy curing agent is improved under the premise of the heat reflection performance of work workability and coating, To improve its intensity;In addition, bituminous pavement heat-reflective coating of the invention matches by adjusting coating material and Optimizing construction Condition (determines suitable construction temperature and construction time), so that its adhesive capacity is improved, therefore, bituminous pavement of the invention Heat-reflective coating has good intensity, adhesive capacity and durability, so as to be applied to the pitch of urban road intersection Road surface can be effectively reduced summer pavement temperature to resist the percussion of vehicular load, reduce the generation of track disease, into The service life of one step extension bituminous pavement.
The second, bituminous pavement heat-reflective coating of the invention passes through the painting thickness under control different pitches road surface gradation types Degree provides microcosmic antiskid structure, antiskid by dispensing antilubricant to reduce reduction of the coating to original road surface pore structure It is functional, to guarantee traffic safety.
Third, the present invention use aqueous epoxy resins as film forming matter, have easy for construction, the small equal spies of environmental pollution Point.
Specific embodiment
The present invention provides a kind of bituminous pavement heat-reflective coatings and preparation method thereof.
<bituminous pavement heat-reflective coating>
Bituminous pavement heat-reflective coating of the invention comprising following component:
Wherein, the first aqueous epoxy resins and the second aqueous epoxy resins are as film forming matter, the first aqueous epoxy resins For epoxy resin latex, the second aqueous epoxy resins are epoxy curing agent, and its ratio be 2: 1.
In fact, nano-titanium dioxide, nano silica and iron oxide red as filler, are filled out before coating by above-mentioned Material is stored at aeration-drying, is kept away from moisture and is agglomerated.
Nano-titanium dioxide is rutile-type, partial size 20-50nm.
The partial size of nano silica is 5-10 μm.
Delustering agent and dispersing agent are as auxiliary agent.
Delustering agent is aqueous delustering agent.
Dispersing agent is the aqueous dispersion suitable for epoxy glue.
Antilubricant is glass-ceramic microballon, and mesh number is 40 mesh.
<preparation method of bituminous pavement heat-reflective coating>
The preparation method of bituminous pavement heat-reflective coating of the invention comprising following steps:
(1), nano-titanium dioxide is added in the first aqueous epoxy resins and is stirred, obtain the first mixture;
(2), nano silica is added in the first mixture and is stirred, obtain the second mixture;
(3), iron oxide red, dispersing agent and delustering agent are sequentially added in the second mixture and is stirred, obtain third mixture;
(4), the second aqueous epoxy resins are added in third mixture and are stirred, obtain aqueous epoxide resin paint;
(5), aqueous epoxide resin paint is brushed on the surface of bituminous pavement, obtains coating, 10min after the completion of brushing It is interior, antilubricant is spread in the surface of coating and is formed.
Wherein, in step (1), the time of stirring can be 2 ± 0.5min, preferably 2min.
In step (2), the time of stirring can be 1 ± 0.5min, preferably 1min.
In step (3), the time of stirring can be 2 ± 0.5min, preferably 2min.
In step (4), the time of stirring can be 2 ± 0.5min, preferably 2min.
The present invention is further illustrated with reference to embodiments.
Embodiment 1:
The bituminous pavement heat-reflective coating of the present embodiment includes following component:
The preparation method of the bituminous pavement heat-reflective coating of the present embodiment includes the following steps:
(1), 94g nano-titanium dioxide is added in the first aqueous epoxy resins of 1000g first and 2min is sufficiently stirred, obtained To the first mixture;
(2), then 47g nano silica is added in the first mixture and 1min is sufficiently stirred, obtain the second mixing Object;
(3), then 94g iron oxide red, 35.25g dispersing agent and 23.5g delustering agent are sequentially added in the second mixture simultaneously 2min is sufficiently stirred, obtains third mixture;
(4), finally the second aqueous epoxy resins of 500g are added in third mixture and 2min is sufficiently stirred, dispersed Uniform aqueous epoxide resin paint;
(5), aqueous epoxide resin paint is uniformly brushed to the AC-13 pitch mixing in preparation by the way of manually brushing (track board size are as follows: length 300mm, width 300mm, with a thickness of 50mm), coated weight 0.45kg/ on truck rut plate m2.After the completion of coating is brushed in 10min, 11.75g glass-ceramic microballon (as antilubricant) is spread in uniform in the table of coating Face, and health 5h is formed in 30 DEG C of environment.
The AC-13 track plate test specimen matched of preparation same stages as a control group, with the above-mentioned track plate for being coated with heat-reflective coating It is placed on the temperature for testing two surface of test piece in 65 DEG C of environmental cabinets after 30min together, is denoted as T respectively1-1And T1-2(control group), meter Calculation obtains T1-1=64 DEG C, T1-2=56 DEG C, cooling extent is ΔT=8 DEG C.
The above-mentioned track plate test specimen for being coated with heat-reflective coating is cut, the consistent cuboid of two block sizes is formed Shape, size are as follows: length 150mm, width 300mm carry out load 1,000,000 with a thickness of 50mm under MMLS3 accelerated loading instrument It is secondary, to evaluate the durability of coating under vehicular load long term, the peeling area of the surface of test piece coating after load is carried out Statistics, and peeling rate is calculated, peeling rate is defined as:
In formula, ρ-peeling rate, unit %;
The gross area of surface of test piece disbonding, unit m2, wherein i=0 ... n;
S- surface of test piece product, unit m2
Peeling rate in the present embodiment after two pieces of surface of test piece coating loads is as shown in table 1.
1 embodiment of table, 1 conducting performance test result
From the point of view of the test result in table 1, heat-reflective coating in the present embodiment be used to having when AC-13 asphalt surface course compared with Good durability, illustrates that the antistrip performance of the bituminous pavement heat-reflective coating is preferable.
Embodiment 2:
The bituminous pavement heat-reflective coating of the present embodiment includes following component:
The preparation method of the bituminous pavement heat-reflective coating of the present embodiment includes the following steps:
(1), 94g nano-titanium dioxide is added in the first aqueous epoxy resins of 1000g first and 2min is sufficiently stirred, obtained To the first mixture;
(2), then 47g nano silica is added in the first mixture and 1min is sufficiently stirred, obtain the second mixing Object;
(3), then 94g iron oxide red, 35.25g dispersing agent and 23.5g delustering agent are sequentially added in the second mixture simultaneously 2min is sufficiently stirred, obtains third mixture;
(4), finally the second aqueous epoxy resins of 500g are added in third mixture and 2min is sufficiently stirred, dispersed Uniform aqueous epoxide resin paint;
(5), the SMA-13 pitch uniformly brushed aqueous epoxide resin paint by the way of manually brushing in preparation mixes It closes on truck rut plate (track board size are as follows: length 300mm, width 300mm, with a thickness of 50mm), coated weight 0.48kg/ m2.After the completion of coating is brushed in 10min, 11.75g glass-ceramic microballon (as antilubricant) is spread in uniform in the table of coating Face, and health 5h is formed in 30 DEG C of environment.
The AC-13 track plate test specimen matched of preparation same stages as a control group, with the above-mentioned track plate for being coated with heat-reflective coating It is placed on the temperature for testing two surface of test piece in 65 DEG C of environmental cabinets after 30min together, is denoted as T respectively2-1And T2-2(control group), meter Calculation obtains T2-1=63 DEG C, T2-2=54 DEG C, cooling extent is ΔT=9 DEG C.
The above-mentioned track plate test specimen for being coated with heat-reflective coating is cut, the consistent cuboid of two block sizes is formed Shape, size are as follows: length 150mm, width 300mm carry out load 1,000,000 with a thickness of 50mm under MMLS3 accelerated loading instrument It is secondary, to evaluate the durability of coating under vehicular load long term, the peeling area of the surface of test piece coating after load is carried out Statistics, and peeling rate is calculated, peeling rate is defined as:
In formula, ρ-peeling rate, unit %;
The gross area of surface of test piece disbonding, unit m2, wherein i=0 ... n;
S- surface of test piece product, unit m2
Peeling rate in the present embodiment after two pieces of surface of test piece coating loads is as shown in table 2.
2 embodiment of table, 2 conducting performance test result
From the point of view of the test result in table 2, the heat-reflective coating in the present embodiment is used to have when SMA-13 asphalt surface course Preferable durability illustrates that the antistrip performance of the bituminous pavement heat-reflective coating is preferable.
Embodiment 3:
The bituminous pavement heat-reflective coating of the present embodiment includes following component:
The preparation method of the bituminous pavement heat-reflective coating of the present embodiment includes the following steps:
(1), 50g nano-titanium dioxide is added in the first aqueous epoxy resins of 1000g first and 2min is sufficiently stirred, obtained To the first mixture;
(2), then 25g nano silica is added in the first mixture and 1min is sufficiently stirred, obtain the second mixing Object;
(3), then 50g iron oxide red, 16.7g dispersing agent and 8.3g delustering agent are sequentially added in the second mixture and is filled Divide stirring 2min, obtains third mixture;
(4), finally the second aqueous epoxy resins of 500g are added in third mixture and 2min is sufficiently stirred, dispersed Uniform aqueous epoxide resin paint;
(5), aqueous epoxide resin paint is uniformly brushed to the AC-13 pitch mixing in preparation by the way of manually brushing (track board size are as follows: length 300mm, width 300mm, with a thickness of 50mm), coated weight 0.45kg/ on truck rut plate m2.After the completion of coating is brushed in 10min, 16.7g glass-ceramic microballon (as antilubricant) is spread in uniform in the surface of coating, And health 5h is formed in 30 DEG C of environment.
The AC-13 track plate test specimen matched of preparation same stages as a control group, with the above-mentioned track plate for being coated with heat-reflective coating It is placed on the temperature for testing two surface of test piece in 65 DEG C of environmental cabinets after 30min together, is denoted as T respectively3-1And T3-2(control group), meter Calculation obtains T3-1=60 DEG C, T3-2=54 DEG C, cooling extent is ΔT=6 DEG C.
The above-mentioned track plate test specimen for being coated with heat-reflective coating is cut, the consistent cuboid of two block sizes is formed Shape, size are as follows: length 150mm, width 300mm carry out load 1,000,000 with a thickness of 50mm under MMLS3 accelerated loading instrument It is secondary, to evaluate the durability of coating under vehicular load long term, the peeling area of the surface of test piece coating after load is carried out Statistics, and peeling rate is calculated, peeling rate is defined as:
In formula, ρ-peeling rate, unit %;
The gross area of surface of test piece disbonding, unit m2, wherein i=0 ... n;
S- surface of test piece product, unit m2
Peeling rate in the present embodiment after two pieces of surface of test piece coating loads is as shown in table 3.
3. embodiment of table, 3 conducting performance test result
From the point of view of the test result in table 3, heat-reflective coating in the present embodiment be used to having when AC-13 asphalt surface course compared with Good durability, illustrates that the antistrip performance of the bituminous pavement heat-reflective coating is preferable.
Embodiment 4:
The bituminous pavement heat-reflective coating of the present embodiment includes following component:
The preparation method of the bituminous pavement heat-reflective coating of the present embodiment includes the following steps:
(1), 50g nano-titanium dioxide is added in the first aqueous epoxy resins of 1000g first and 2min is sufficiently stirred, obtained To the first mixture;
(2), then 25g nano silica is added in the first mixture and 1min is sufficiently stirred, obtain the second mixing Object;
(3), then 50g iron oxide red, 16.7g dispersing agent and 8.3g delustering agent are sequentially added in the second mixture and is filled Divide stirring 2min, obtains third mixture;
(4), finally the second aqueous epoxy resins of 500g are added in third mixture and 2min is sufficiently stirred, dispersed Uniform aqueous epoxide resin paint;
(5), the SMA-13 pitch uniformly brushed aqueous epoxide resin paint by the way of manually brushing in preparation mixes It closes on truck rut plate (track board size are as follows: length 300mm, width 300mm, with a thickness of 50mm), coated weight 0.45kg/ m2.After the completion of coating is brushed in 10min, 16.7g glass-ceramic microballon (as antilubricant) is spread in uniform in the surface of coating, And health 5h is formed in 30 DEG C of environment.
The SMA-13 track plate test specimen matched of preparation same stages as a control group, with the above-mentioned track plate for being coated with heat-reflective coating It is placed on the temperature for testing two surface of test piece in 65 DEG C of environmental cabinets after 30min together, is denoted as T respectively4-1And T4-2(control group), meter Calculation obtains T4-1=63 DEG C, T4-2=55 DEG C, cooling extent is ΔT=8 DEG C.
The above-mentioned track plate test specimen for being coated with heat-reflective coating is cut, the consistent cuboid of two block sizes is formed Shape, size are as follows: length 150mm, width 300mm carry out load 1,000,000 with a thickness of 50mm under MMLS3 accelerated loading instrument It is secondary, to evaluate the durability of coating under vehicular load long term, row is said to the peeling area of the surface of test piece coating after load Statistics, and peeling rate is calculated, peeling rate is defined as:
In formula, ρ-peeling rate, unit %;
The gross area of surface of test piece disbonding, unit m2, wherein i=0 ... n;
S- surface of test piece product, unit m2
Peeling rate in the present embodiment after two pieces of surface of test piece coating loads is as shown in table 4.
4 embodiment of table, 4 conducting performance test result
From the point of view of the test result in table 4, the heat-reflective coating in the present embodiment is used to have when SMA-13 asphalt surface course Preferable durability illustrates that the antistrip performance of the bituminous pavement heat-reflective coating is preferable.
The above-mentioned description to embodiment is that this hair can be understood and used for the ease of those skilled in the art It is bright.Those skilled in the art obviously readily can make various modifications to these embodiments, and described herein one As principle be applied in other embodiments, without having to go through creative labor.Therefore, the present invention is not limited to the above embodiments. Those skilled in the art's principle according to the present invention, not departing from improvement that scope of the invention is made and modification all should be at this Within the protection scope of invention.

Claims (10)

1. a kind of bituminous pavement heat-reflective coating, it is characterised in that: it includes following component:
2. bituminous pavement heat-reflective coating according to claim 1, it is characterised in that: first aqueous epoxy resins and The ratio of second aqueous epoxy resins is 2:1.
3. bituminous pavement heat-reflective coating according to claim 1, it is characterised in that: the nano-titanium dioxide is golden red Stone-type, partial size 20-50nm.
4. bituminous pavement heat-reflective coating according to claim 1, it is characterised in that: the partial size of the nano silica It is 5-10 μm.
5. bituminous pavement heat-reflective coating according to claim 1, it is characterised in that: the delustering agent is aqueous delustring Agent;And/or
The dispersing agent is the aqueous dispersion suitable for epoxy glue;And/or
The antilubricant is glass-ceramic microballon, and mesh number is 40 mesh.
6. a kind of preparation method of bituminous pavement heat-reflective coating according to claim 1-5, it is characterised in that: It includes the following steps:
(1), nano-titanium dioxide is added in the first aqueous epoxy resins and is stirred, obtain the first mixture;
(2), nano silica is added in first mixture and is stirred, obtain the second mixture;
(3), iron oxide red, dispersing agent and delustering agent are sequentially added in second mixture and is stirred, obtain third mixture;
(4), the second aqueous epoxy resins are added in the third mixture and are stirred, obtain aqueous epoxide resin paint;
(5), the aqueous epoxide resin paint is brushed on the surface of bituminous pavement, obtains coating, 10min after the completion of brushing It is interior, antilubricant is spread in the surface of the coating and is formed.
7. preparation method according to claim 6, it is characterised in that: in step (1), the time of the stirring is 2 ± 0.5min.
8. preparation method according to claim 6, it is characterised in that: in step (2), the time of the stirring is 1 ± 0.5min.
9. preparation method according to claim 6, it is characterised in that: in step (3), the time of the stirring is 2 ± 0.5min.
10. preparation method according to claim 6, it is characterised in that: in step (4), time of the stirring is 2 ± 0.5min。
CN201910694598.1A 2019-07-30 2019-07-30 Bituminous pavement heat-reflective coating and preparation method thereof Pending CN110437709A (en)

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Application publication date: 20191112