CN109988468A - A kind of bituminous pavement protective agent and preparation method thereof - Google Patents
A kind of bituminous pavement protective agent and preparation method thereof Download PDFInfo
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- CN109988468A CN109988468A CN201910144443.0A CN201910144443A CN109988468A CN 109988468 A CN109988468 A CN 109988468A CN 201910144443 A CN201910144443 A CN 201910144443A CN 109988468 A CN109988468 A CN 109988468A
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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
- C09D111/00—Coating compositions based on homopolymers or copolymers of chloroprene
- C09D111/02—Latex
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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
- C09D125/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
- C09D125/02—Homopolymers or copolymers of hydrocarbons
- C09D125/04—Homopolymers or copolymers of styrene
- C09D125/08—Copolymers of styrene
- C09D125/14—Copolymers of styrene with unsaturated esters
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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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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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
- C09D143/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Coating compositions based on derivatives of such polymers
- C09D143/04—Homopolymers or copolymers of monomers containing silicon
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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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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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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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
Abstract
The present invention provides a kind of bituminous pavement protective agent and preparation method thereof, the component including following parts by weight: 35-65 parts of base material, 10-35 parts of elastic emulsion, 2-8 parts of auxiliary agent, toner mixing slurry or 0.5-16 parts of mill base.The present invention is hydrate colour bituminous pavement protective agent, and preparation method is simple, environment-protecting and non-poisonous, 1-2 hours can open to traffic.It can directly be sprayed using bituminous pavement protective agent of the present invention or mix and stir repairing and solve the problems, such as the slight disease such as Colorful Asphalt Pavement colour fading, crack, pit slot.
Description
Technical field
The present invention relates to road surface protection technique fields；In particular it relates to a kind of bituminous pavement protective agent and preparation method thereof.
Background technique
In the 1950s, Holland is first using red pitch making town road, subsequent more and more national makings
Colorful Asphalt Pavement.China introduces color asphalt technology the 1980s, builds with the development of economy with modernization
If raising, rich in color and function admirable variety classes Colorful Asphalt Pavement obtained extensive promotion and application.Now,
It is not only town road and park, more and more schools, factory and residential building cell all making Colorful Asphalt Pavements, so color
The maintenance on color road surface is receive more and more attention.With the continuous development of pavement technique, Colorful Asphalt Pavement is in addition to color
Bright-coloured feature, performance and it is functional also improve a lot, exactly because but the bright-colored feature in road surface, one section of making
The disadvantages of colored road surface is easy to appear colour fading after time, and dirt print is obvious, has seriously affected the beauty of colored road surface.
Summary of the invention
The purpose of the invention is to overcome above-mentioned colored road surface of the existing technology to use the defect of rear surface quality,
A kind of bituminous pavement protective agent and preparation method thereof is provided, repairing solves Colorful Asphalt Pavement colours fading, crack, pit slot etc. slightly
Disease problem.
To achieve the goals above, in the embodiment on basis, the present invention provides a kind of bituminous pavement protective agent, including
The component of following parts by weight:
35-65 parts of base material, 10-35 parts of elastic emulsion, 2-8 parts of auxiliary agent, toner mixing slurry or 0.5-16 parts of mill base.Institute
It states base material and is selected from acrylic emulsion, modified acrylic acid emulsion, styrene-acrylic emulsion, silicone acrylic emulsion and aqueous polyurethane emulsion, with
And two or three of mixture in them；The elastic emulsion be selected from pure-acrylic emulsion, polychloroprene latex and styrene-butadiene latex and it
In two or three of mixture.
In a preferred embodiment, the bituminous pavement protective agent further include: water≤15 part.
In a preferred embodiment, the base material is 60 parts of fluorine-silicon modified acrylic lotion, and elastic emulsion is
20 parts of pure-acrylic emulsion, 16 parts of toner mixing slurry, coalescing agent is 4 parts of Lauryl Alcohol ester；Wherein toner mixing slurry is 40 parts of toner,
1 part of dispersing agent, 1 part of thickener, remainder is water.
In a preferred embodiment, the auxiliary agent is selected from Lauryl Alcohol ester, benzyl alcohol, butyl glycol ether and the third two
Alcohol phenylate.
In a preferred embodiment, the toner mixing slurry includes 40-80 parts of toner, 1-5 parts of dispersing agent, thickening
1-2 parts and water 20-40 parts of agent.
In a preferred embodiment, the dispersing agent is polyacrylic.
In a preferred embodiment, the thickener is hydroxyethyl cellulose or hydroxymethyl cellulose.
Another aspect of the present invention provides the protectant preparation method of above-mentioned bituminous pavement, includes the following steps:
Said components are proportionally added into agitating device, stirring 0.5-1 hours to uniform.
The present invention also provides the protectant application of above-mentioned bituminous pavement, by bituminous pavement protective agent using directly spraying or
It mixes and stirs the mode that sand blasting is spilt and is used for road surface.
In a preferred embodiment, bituminous pavement protective agent and sand material are mixed and stirred with the weight ratio of 1-2:1.
Through the above technical solutions, the present invention is hydrate colour bituminous pavement protective agent, preparation method is simple, environmentally friendly nothing
Poison, 1-2 hours can open to traffic.By way of directly spraying or mixing and stirring sand blasting and spill, Colorful Asphalt Pavement can be increased
Service life solves the disadvantage that Colorful Asphalt Pavement is easy to fade, and road surface can be made for a long time bright new.It is also possible to as cold
Spice mixes and stirs sandstone, solves colored road surface and is easy to fade, is easy dirty problem, keeps Colorful Asphalt Pavement for a long time bright new；Together
When can also be by cold mixing sand material, hole is mended in joint filling, the problems such as solving colored road surface slight disease.
Specific embodiment
In order to better understand the above technical scheme, being done below by specific embodiment to technical scheme detailed
Explanation, it should be understood that the specific features in the embodiment of the present application and embodiment be to technical scheme specifically
It is bright, rather than the restriction to technical scheme, in the absence of conflict, the skill in the embodiment of the present application and embodiment
Art feature can be combined with each other.It should be understood that term "and/or" used herein above includes listed by one of them or more
Any and all combinations of associated item out.
The endpoint of disclosed range and any value are not limited to the accurate range or value herein, these ranges or
Value should be understood as comprising the value close to these ranges or value.For numberical range, between the endpoint value of each range, respectively
It can be combined with each other between the endpoint value of a range and individual point value, and individually between point value and obtain one or more
New numberical range, these numberical ranges should be considered as specific open herein.
In order to overcome above-mentioned colored road surface of the existing technology to use the defect of rear surface quality, the embodiment of the present invention
Main thought is, a kind of bituminous pavement protective agent and preparation method thereof, the component including following parts by weight:
35-65 parts of base material, 10-35 parts of elastic emulsion, 2-8 parts of auxiliary agent, toner mixing slurry or 0.5-16 parts of mill base.
In addition, the bituminous pavement protective agent may also include that water≤15 part.A small amount of water can increase protectant flowing
Property, while cost is reduced, but excessive water not only will increase protective agent molding time while also will affect its color.
Specifically, above-mentioned base material can be selected from acrylic emulsion, modified acrylic acid emulsion, styrene-acrylic emulsion, silicone acrylic emulsion
And aqueous polyurethane emulsion and two or three of mixture in them.Acrylic emulsion and its modified emulsion have preferable
High temperature resistance, faster film forming speed, the strong feature of cohesive force.
Specifically, above-mentioned elastic emulsion can be selected from pure-acrylic emulsion, polychloroprene latex and styrene-butadiene latex and two kinds in them
Or three kinds of mixtures.Above-mentioned elastic emulsion all has preferable flexibility and resistance to low temperature.
Specifically, above-mentioned auxiliary agent can be selected from Lauryl Alcohol ester, benzyl alcohol, butyl glycol ether and propylene glycol phenylate.
Specifically, above-mentioned toner mixing slurry may include 40-80 parts of toner, 1-5 parts of dispersing agent, 1-2 parts of thickener and water 20-
40 parts；The configuration of the toner mixing slurry can be preferably dispersed in Polymer Solution, dispersing agent compared to toner is directly added into
Addition with thickener solves the problems, such as that toner settles after placing a period of time.The dispersing agent is preferably polyacrylic.
The thickener is preferably hydroxyethyl cellulose or hydroxymethyl cellulose.
The hydrate colour bituminous pavement protective agent of preparation of the embodiment of the present invention, can be mixed and stirred by different proportion and sand material.
Such as: bituminous pavement protective agent and sand material are mixed and stirred with the weight ratio of 1~2:1, the mixed mortar mixed and stirred will not isolate
And have certain mobility, it can preferably fill up tiny crack and pit slot.
A kind of protectant protection mechanism of hydrate colour bituminous pavement of preparation of the embodiment of the present invention are as follows: hydrate colour drip
Green protective agent is made of a continuous water phase and many polymer particles being dispersed in water phase.By protective agent spary pitch
After road surface, after water is gradually evaporated or absorbed by porous surface, the intermolecular of base material reacts, and makes relative molecular mass
It further increases, so that intermolecular cross-linking, which occurs, forms tough and tensile reticulated film, this high molecular film can be by toner particles
Package wherein, while also forming the protective film of Colorful Asphalt Pavement, so that bituminous pavement is bright in luster, sustains its quality through age.Separately
Outside, the addition of elastic emulsion can enable the aqueous road surface protective agent to have certain viscoelasticity, in the process for mixing and stirring sandstone
In so that aqueous road surface protective agent uniformly wraps up sandstone, after spread is on road surface, elastic emulsion can by sandstone and
Base material is effectively crosslinked integrally, is not in cracking, loose problem.
Below with reference to specific embodiment, the present invention will be described in detail.Material used in embodiment can be by commercially available
Channel obtains.
Embodiment one
A kind of hydrate colour bituminous pavement protective agent of the embodiment of the present invention, the raw material including following parts by weight: acrylic acid
60 parts of lotion, 20 parts of pure-acrylic emulsion, 4 parts of Lauryl Alcohol ester, 16 parts of toner mixing slurry.Raw material is sequentially added in agitator tank, it is even
Speed stirring 30 minutes.Wherein, toner mixing slurry includes 60 parts of toner, 3 parts of ammonium polyacrylate, 1 part of hydroxyethyl cellulose, remainder
For water.
Embodiment two
A kind of hydrate colour bituminous pavement protective agent of the embodiment of the present invention, the raw material including following parts by weight: modified third
50 parts of olefin(e) acid lotion, 25 parts of pure-acrylic emulsion, 5 parts of Lauryl Alcohol ester, 12 parts of toner mixing slurry, 8 parts of water.Raw material is sequentially added and is stirred
It mixes in tank, average rate stirs a hour.Wherein, toner mixing slurry includes 40 parts of toner, 1 part of ammonium polyacrylate, hydroxy ethyl fiber
1 part of element, remainder are water.
Embodiment three
A kind of hydrate colour bituminous pavement protective agent of the embodiment of the present invention, the raw material including following parts by weight: acrylic acid
30 parts of lotion, 30 parts of silicone acrylic emulsion, 15 parts of styrene-butadiene latex, 5 parts of benzyl alcohol, 16 parts of toner mixing slurry, 4 parts of water.Successively by raw material
It is added in agitator tank, average rate stirs a hour.Wherein, toner mixing slurry includes 80 parts of toner, 5 parts of ammonium polyacrylate, hydroxyl second
2 parts of base cellulose, remainder is water.
Example IV
A kind of hydrate colour bituminous pavement protective agent of the embodiment of the present invention, the raw material including following parts by weight: phenylpropyl alcohol cream
54 parts of liquid, 20 parts of pure-acrylic emulsion, 6 parts of styrene-butadiene latex, 8 parts of butyl glycol ether, 1 part of mill base, 11 parts of water.Raw material is sequentially added and is stirred
It mixes in tank, average rate stirs 40 minutes.
Embodiment five
A kind of hydrate colour bituminous pavement protective agent of the embodiment of the present invention, the raw material including following parts by weight: aqueous poly-
35 parts of urethane, 35 parts of polychloroprene latex, 6 parts of propylene glycol phenylate, 0.5 part of mill base, 11.5 parts of water.Raw material is sequentially added into agitator tank
In, average rate stirs 40 minutes.
Embodiment six
A kind of hydrate colour bituminous pavement protective agent of the embodiment of the present invention, the raw material including following parts by weight: modified third
30 parts of olefin(e) acid lotion, 20 parts of styrene-acrylic emulsion, 30 parts of polychloroprene latex, 5.5 parts of propylene glycol phenylate, 0.5 part of mill base, 14 parts of water.It will be former
Material sequentially adds in agitator tank, and average rate stirs 40 minutes.
Embodiment seven
A kind of hydrate colour bituminous pavement protective agent of the embodiment of the present invention, the raw material including following parts by weight: modified third
40 parts of olefin(e) acid lotion, 15 parts of styrene-butadiene latex, 6 parts of benzyl alcohol, 15 parts of toner mixing slurry, 14 parts of water.Raw material is sequentially added into stirring
In tank, average rate stirs a hour.Wherein, toner mixing slurry includes 60 parts of toner, 3 parts of ammonium polyacrylate, hydroxyethyl cellulose 1
Part, remainder is water.
Embodiment eight
A kind of hydrate colour bituminous pavement protective agent of the embodiment of the present invention, the raw material including following parts by weight: acrylic acid
30 parts of lotion, 20 parts of styrene-acrylic emulsion, 10 parts of silicone acrylic emulsion, 20 parts of pure-acrylic emulsion, 4 parts of Lauryl Alcohol ester, 16 parts of mill base.By raw material
It sequentially adds in agitator tank, at the uniform velocity stirs 30 minutes.
Embodiment nine
A kind of hydrate colour bituminous pavement protective agent of the embodiment of the present invention, the raw material including following parts by weight: acrylic acid
50 parts of lotion, 20 parts of pure-acrylic emulsion, 6 parts of styrene-butadiene latex, 4 parts of polychloroprene latex, 8 parts of butyl glycol ether, 1 part of mill base, 11 parts of water.It will
Raw material sequentially adds in agitator tank, and average rate stirs 40 minutes.
Embodiment ten
A kind of hydrate colour bituminous pavement protective agent of the embodiment of the present invention, the raw material including following parts by weight:
The base material is 60 parts of fluorine-silicon modified acrylic lotion, and elastic emulsion is 20 parts of pure-acrylic emulsion, toner mixing slurry
16 parts, coalescing agent is 4 parts of Lauryl Alcohol ester；Wherein toner mixing slurry is 40 parts of toner, 1 part of dispersing agent, 1 part of thickener, remaining
It is down water.Raw material is sequentially added in agitator tank, average rate stirs 40 minutes.
By embodiment one (red) and the resulting bituminous pavement protective agent of embodiment five (navy) brush respectively two
It in Guo Chuan group company, Wuhan City on dark asphalt lane, is done solid work in a hour, traffic can be developed, it is bright-colored, it covers
Property is good.Outdoor test is from December in July summer to winter, after 6 months, does not there is peeling, colour fading, cracking phenomena.It should
Aqueous road surface protective agent covering performance is good, and adhesive capacity is strong, good weatherability.
The resulting bituminous pavement protective agent of embodiment five (blue) is brushed respectively on blue pitch track plate, is only brushed
Half, holding chamber is outer to be exposed to the sun and rain after two months, and the half blue of brushing example IV is vivid, does not there is the phenomenon that fades, and not
The half blue of brushing has obvious discolouration phenomena.
Optical valley three tunnel in Wuhan City's is repaired after the resulting bituminous pavement protective agent of embodiment two is mixed and stirred with 1:1 ratio and fine sand
Blue asphalt pavement crack, joint filling effect is good, and a hour can open to traffic.
Wuhan City's optical valley three is repaired after the resulting bituminous pavement protective agent of embodiment ten is mixed and stirred with 1.5:1 ratio and fine sand
Road blue asphalt pavement crack, joint filling effect is good, can open to traffic after 50min.
Thus, the hydrate colour bituminous pavement protective agent of preparation of the embodiment of the present invention can be by directly spraying or mixing
The slight disease such as Colorful Asphalt Pavement colour fading, crack, pit slot is solved the problems, such as with repairing.
The preferred embodiment of the present invention has been described above in detail, and still, the present invention is not limited thereto.In skill of the invention
In art conception range, can with various simple variants of the technical solution of the present invention are made, including each technical characteristic with it is any its
Its suitable method is combined, and it should also be regarded as the disclosure of the present invention for these simple variants and combination, is belonged to
Protection scope of the present invention.
Claims (9)
1. a kind of bituminous pavement protective agent, it is characterised in that: the component including following parts by weight:
35-65 parts of base material, 10-35 parts of elastic emulsion, 2-8 parts of auxiliary agent, toner mixing slurry or 0.5-16 parts of mill base；Wherein,
The base material is selected from acrylic emulsion, modified acrylic acid emulsion, styrene-acrylic emulsion, silicone acrylic emulsion and aqueous polyurethane emulsion,
And two or three of mixture in them；The elastic emulsion is selected from pure-acrylic emulsion, polychloroprene latex and styrene-butadiene latex, and
Two or three of mixture in them.
2. bituminous pavement protective agent according to claim 1, it is characterised in that: the bituminous pavement protective agent further include: water
≤ 15 parts.
3. bituminous pavement protective agent according to claim 1, it is characterised in that: the auxiliary agent is selected from Lauryl Alcohol ester, benzene first
Alcohol, butyl glycol ether and propylene glycol phenylate.
4. bituminous pavement protective agent according to claim 1, it is characterised in that: the toner mixing slurry includes toner 40-80
Part, 1-5 parts of dispersing agent, 1-2 parts of thickener and 20-40 parts of water.
5. bituminous pavement protective agent according to claim 4, it is characterised in that: the dispersing agent is polyacrylic.
6. bituminous pavement protective agent according to claim 4, it is characterised in that: the thickener is hydroxyethyl cellulose or hydroxyl
Methylcellulose.
7. the protectant preparation method of bituminous pavement as described in claim any one of 1-6, it is characterised in that: including walking as follows
It is rapid:
Said components are proportionally added into agitating device, stirring 0.5-1 hours to uniform.
8. the protectant application of bituminous pavement as described in claim any one of 1-6, it is characterised in that: protect the bituminous pavement
Shield agent using directly spray or mix and stir by the way of sand blasting is spilt be used for road surface.
9. the protectant application of bituminous pavement as described in claim any one of 1-6, it is characterised in that: by bituminous pavement protective agent
It is mixed and stirred with sand material with the weight ratio of 1~2:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910144443.0A CN109988468A (en) | 2019-02-27 | 2019-02-27 | A kind of bituminous pavement protective agent and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910144443.0A CN109988468A (en) | 2019-02-27 | 2019-02-27 | A kind of bituminous pavement protective agent and preparation method thereof |
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Cited By (4)
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| CN110669418A (en) * | 2019-10-24 | 2020-01-10 | 重庆重交再生资源开发股份有限公司 | Grey heat-reflection cooling coating and application and preparation method thereof on asphalt pavement |
| CN113122117A (en) * | 2020-01-14 | 2021-07-16 | 山东康德孚美绿道股份有限公司 | Colored asphalt pavement protective agent and preparation method thereof |
| CN115139625A (en) * | 2022-07-15 | 2022-10-04 | 河北强凌防水材料集团有限公司 | Weather-resistant exposed modified asphalt waterproof coiled material and preparation method thereof |
| CN115491127A (en) * | 2022-08-29 | 2022-12-20 | 甘肃路桥善建科技有限公司 | Preparation method of protective agent, protective agent and application of protective agent |
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| CN113122117A (en) * | 2020-01-14 | 2021-07-16 | 山东康德孚美绿道股份有限公司 | Colored asphalt pavement protective agent and preparation method thereof |
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| CN115491127A (en) * | 2022-08-29 | 2022-12-20 | 甘肃路桥善建科技有限公司 | Preparation method of protective agent, protective agent and application of protective agent |
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