1. The color coating material for road is characterized by being mainly prepared from the following raw materials in parts by weight:

the first main solvent is an organic solvent;

the asphalt cement is low-grade and high-softening-point asphalt;

the coating material has a Brookfield viscosity of 2000-4000cPs at 20 ℃.

2. The road color coating material as claimed in claim 1, wherein: the modified master batch is prepared from a second main solvent, a modifier, an anti-permeability agent and a coupling agent,

the weight ratio of the main solvent II to the modifier to the anti-permeability agent to the coupling agent is (30-55) to (8-17) to (7-19) to (4-11),

the second main solvent is one or a mixture of more of 120# solvent oil, 140# solvent oil, 200# solvent oil, light diesel oil and gasoline;

the modifier is one or a mixture of more of styrene-butadiene copolymer, styrene-butadiene-styrene triblock copolymer and neoprene latex;

the anti-permeability agent is an unsaturated fatty acid substance, has a melting point of less than or equal to 20 ℃ and a number average molecular weight of less than or equal to 400, and is a mixture of one or more of oleic acid, palmitoleic acid and soybean oleic acid;

the coupling agent is vinyl silane coupling agent.

3. The road color coating material as claimed in claim 2, wherein the preparation method of the modified master batch comprises the following steps:

stirring the main solvent II and the anti-permeability agent at 30-60 ℃ until the main solvent II and the anti-permeability agent are completely dissolved, then sequentially adding the coupling agent and the modifying agent, continuing stirring for a certain time, naturally cooling to room temperature, and then carrying out ultrasonic treatment for a certain time to obtain the activated modified master batch.

4. The road color coating material as claimed in claim 3, wherein: the preparation process of the modified master batch is carried out under the protection of nitrogen, the processing time of ultrasonic treatment is 10-30min, and the vibration frequency is 30-40 KHz.

5. The road color coating material as claimed in claim 1, wherein: the first main solvent is one or a mixture of more of 120# solvent oil, 140# solvent oil, 200# solvent oil, light diesel oil and gasoline.

6. The road color coating material as claimed in claim 1, wherein: the asphalt cement has a penetration degree of less than or equal to 50(0.1mm) at 25 ℃, a softening point of more than or equal to 65 ℃, and is a mixture of one or more substances of rock asphalt, Trinidad lake asphalt, 50# asphalt, 40# asphalt, 30# asphalt, 20# asphalt and 10# asphalt.

7. The road color coating material as claimed in claim 1, wherein: the functional filler is powder ground by basic rock or super basic rock, has the fineness of not less than 200 meshes, and comprises one or a mixture of more of ground marble, limestone, basalt, granite, dolomite, talcum powder, carborundum or steel slag powder.

8. The road color coating material as claimed in claim 1, wherein: the stabilizer is lignocellulose;

the drier is one or a mixture of two of naphthenic acid soap and sulfite.

9. The road color coating material as claimed in claim 1, wherein: the colorant is a mixture of one of ferric oxide, manganese dioxide, chromium oxide, phthalocyanine blue, ultramarine blue and ferric oxide iron red powder and titanium dioxide white powder pigment, and the weight proportion of the titanium dioxide white powder in the colorant is less than or equal to 30%.

10. The preparation method of the color coating material for the road is characterized by comprising the following steps: the preparation process of the coating material is carried out in a closed container under the protection of nitrogen, and comprises the following steps:

s1, stirring a main solvent II and an anti-permeability agent at 30-60 ℃ until the main solvent II and the anti-permeability agent are completely dissolved, then sequentially adding a coupling agent and a modifying agent, continuously stirring for a certain time, naturally cooling to room temperature, and then carrying out ultrasonic treatment for a certain time to obtain an activated modified master batch;

s2, heating the asphalt cement to the temperature of 120-150 ℃, and then cooling to a state of maintaining a flowing and transportable state to obtain a component A;

s3, mixing the primary solvent I and the modified master batch at the temperature of 30-60 ℃, and uniformly stirring to obtain a component B;

s4, mixing the component A and the component B, then sequentially adding the stabilizer, the drier, the functional filler and the colorant, uniformly stirring to obtain a coating material,

the weight ratio of each raw material is as follows:

the first main solvent is an organic solvent;

the asphalt cement is low-grade and high-softening-point asphalt;

the coating material has a Brookfield viscosity of 2000-4000cPs at 20 ℃.

Background

In order to beautify the environment, distinguish functional areas and prompt special road sections, urban roads are often provided with colored pavements in non-motor vehicle lanes, intersection waiting areas and the like. The existing color pavement construction modes comprise color asphalt pavement, color micro-surfacing pavement and the like.

The pavement thickness of the color asphalt pavement is more than 3 cm, a thin layer cannot be constructed, the cost is high, and the effect after application is not good.

The color micro-surfacing road surface is an ultrathin layer mixture composed of modified emulsified asphalt, aggregates with certain gradation, mineral powder, water and additives, and is paved on the original asphalt road surface after being uniformly stirred, although the color micro-surfacing road surface has a certain anti-wear effect, the color micro-surfacing road surface has the disadvantages of large driving noise, poor durability, poor adhesion with the lower layer road surface, unstable emulsion breaking time and large maintenance difficulty after local damage.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a road color coating material which can greatly improve the wear-resisting and seepage-proofing performance of a road surface, has simple and convenient implementation process and stable performance and a preparation method thereof.

The technical task of the invention is realized by the following modes: a color coating material for roads is mainly prepared from the following raw materials in parts by weight:

the first main solvent is an organic solvent;

the asphalt cement is low-grade and high-softening-point asphalt;

the coating material has a Brookfield viscosity of 2000-4000cPs at 20 ℃.

The weight ratio of the raw materials is preferably as follows:

preferably, the modified master batch is prepared from a second main solvent, a modifier, an anti-permeability agent and a coupling agent,

the weight ratio of the main solvent II to the modifier to the anti-permeability agent to the coupling agent is (30-55) to (8-17) to (7-19) to (4-11), preferably (40-55) to (12-17) to (12-19) to (8-11);

the second main solvent is one or a mixture of more of 120# solvent oil, 140# solvent oil, 200# solvent oil, light diesel oil and gasoline;

the modifier is preferably one or a mixture of more of styrene-butadiene copolymer, styrene-butadiene-styrene triblock copolymer and neoprene latex;

the anti-permeability agent is an unsaturated fatty acid substance, has a melting point of less than or equal to 20 ℃ and a number average molecular weight of less than or equal to 400, is used for improving interface bonding, and is preferably a mixture of one or more substances selected from oleic acid, palmitoleic acid and soybean oleic acid;

the coupling agent is vinyl silane coupling agent.

Further, the preparation method of the modified master batch is preferably as follows:

stirring the main solvent II and the anti-permeability agent at 30-60 ℃ until the main solvent II and the anti-permeability agent are completely dissolved, then sequentially adding the coupling agent and the modifying agent, continuing stirring for a certain time, naturally cooling to room temperature, and then carrying out ultrasonic treatment for a certain time to obtain the activated modified master batch.

Preferably, the preparation process of the modified master batch is carried out under the protection of nitrogen, and the treatment time of ultrasonic treatment is preferably 10-30min, particularly preferably 15-25 min; the vibration frequency is preferably 30 to 40KHz, particularly preferably 23 to 27 KHz.

Preferably, the first main solvent is one or a mixture of more of 120# solvent oil, 140# solvent oil, 200# solvent oil, light diesel oil and gasoline.

In order to ensure the stability of the coating material under high temperature conditions, the asphalt cement preferably has a penetration degree of less than or equal to 50(0.1mm) at 25 ℃ and a softening point of more than or equal to 65 ℃, and is particularly preferably a mixture of one or more of rock asphalt, Trinidad lake asphalt, 50# asphalt, 40# asphalt, 30# asphalt, 20# asphalt and 10# asphalt.

Preferably, the functional filler is ground powder of basic rock or super basic rock, the fineness is not less than 200 meshes, and particularly preferably one or more of ground marble, limestone, basalt, granite, dolomite, talcum powder, carborundum or steel slag powder.

Preferably, the stabilizing agent is lignocellulose with a fiber length of 100-500 microns; the drier is one or two of naphthenic acid soap and sulfite (such as sodium sulfite, magnesium sulfite, etc.).

The colorant is a mixture of one of ferric oxide, manganese dioxide, chromium oxide, phthalocyanine blue, ultramarine blue and ferric oxide iron red powder and titanium dioxide white powder pigment, and the weight proportion of the titanium dioxide white powder in the colorant is less than or equal to 30%.

The invention further aims to provide a preparation method of the colored coating material for roads.

The preparation method of the color coating material for roads is characterized in that the preparation process of the coating material is carried out under the protection of nitrogen in a closed container, and comprises the following steps:

s1, stirring a main solvent II and an anti-permeability agent at 30-60 ℃ until the main solvent II and the anti-permeability agent are completely dissolved, then sequentially adding a coupling agent and a modifying agent, continuously stirring for a certain time, naturally cooling to room temperature, and then carrying out ultrasonic treatment for a certain time to obtain an activated modified master batch;

s2, heating the asphalt cement to the temperature of 120-150 ℃, and then cooling to a state of maintaining a flowing and transportable state to obtain a component A;

s3, mixing the primary solvent I and the modified master batch at the temperature of 30-60 ℃, and uniformly stirring to obtain a component B;

s4, slowly adding the component A into the component B, mixing, then sequentially adding the stabilizer, the drier, the functional filler and the colorant, uniformly stirring to obtain the asphalt pavement coating material,

the weight ratio of each raw material is as follows:

the main solvent is an organic solvent;

the asphalt cement is low-grade and high-softening-point asphalt;

the coating material has a Brookfield viscosity of 2000-4000cPs at 20 ℃.

In order to enable the coating material to meet the index requirements of viscosity and drying time, the following method can be adopted for regulation and control in the preparation process:

(1) testing the viscosity of the prepared asphalt pavement coating material by using Bookefield (No. 6 spindle) at the temperature of 20 ℃, if the viscosity is higher than the control index of the required material, increasing the viscosity by 1 percent of the total amount of the prepared asphalt pavement coating material, adding a primary solvent I or a primary solvent II, uniformly stirring, and repeatedly carrying out a viscosity test until the required viscosity is reached; if the viscosity of the material is lower than the control index, the functional filler is added according to the proportion of 1 percent of the total amount of the prepared asphalt pavement coating material, the mixture is uniformly stirred, and the required viscosity is reached through repeated viscosity tests.

(2) And (3) performing a pre-laying test on the coating material, and adding a drier according to a proportion of 1% of the total amount of the coating material before laying and using until the use requirement is met if a plurality of drying times do not meet the requirement.

TABLE 1 drying time and ambient temperature requirements

40℃	30℃	20℃	15℃
				30～45min	About 60min	About 90min	Over 180min

The pavement repairing coating material can be sprayed and constructed by using conventional high-pressure asphalt coating spraying equipment, can be directly sprayed on an underlying pavement structure layer, and can also be used for carrying out pretreatment such as shot blasting and the like on the underlying pavement structure before spraying.

The spraying amount is preferably uniform and non-leakage, and preferably 0.6-1.3Kg/m²It is preferable.

The optimum spraying amount for different pavement types and diseases is shown in table 2.

TABLE 2 optimal spray rates for different pavement types and conditions

Road surface type	Description of major diseases	Spreading amount range (Kg/m)2)
			AC asphalt concrete pavement	Burnishing, loosening, loss of asphaltic membrane	0.6～0.85
SMA asphalt concrete pavement	Loose, missing bituminous membrane	0.9～1.3
			Asphalt macadam pavement	Loosening	1.0～1.3
AK asphalt concrete pavement	Loose, missing bituminous membrane	1.0～1.3

In the implementation process, the anti-skid capacity and the texture of the asphalt pavement can be divided into three states of rough, moderate and smooth, and generally, the low limit of the recommended spreading amount is preferably adopted in the state of partial smoothness.

The spraying pressure of the pump of the high-pressure spraying vehicle is preferably 18-22Kg, the flow control of the mixture is preferably 320-350Kg/min, the driving speed is preferably controlled at 7-9Km/h, the speed and the spraying amount of the spraying equipment are kept stable during spraying, and the spraying is uniform within the whole spraying width range. The height above the ground of the spray pipe of the spray vehicle is preferably 350-450mm and can be fixed, the distance between the adjacent oil nozzles is preferably 200-400mm, the spray widths of the oil nozzles are overlapped, the material sprayed by two or three oil nozzles is received at the same place, and the occurrence of white stripes is avoided.

Compared with the prior art, the road color coating material and the preparation method thereof have the following outstanding beneficial effects:

the adopted asphalt cementing material has the characteristics of low grade, high softening point and the like, has good compatibility with a main solvent, has good workability during construction, can shorten drying time after construction, and can ensure good high-temperature stability during use;

the environment-friendly organic solvent is adopted, so that the paint has higher solubility and post-construction volatility, the hydrophobicity and the water stability are improved compared with the traditional emulsified 'water-based' asphalt-based paint on the market, and the environmental protection property is improved compared with the traditional aromatic hydrocarbon organic solvent;

thirdly, the activation modified master batch obtained by a specific method has higher adhesive strength and excellent weather resistance, seepage resistance, durability and other characteristics;

and (IV) the functional filler is used as the main component of the coating material, and can be well combined with the asphalt cement under the action of the activated modified master batch, and the specific mechanism is as follows: double bonds in unsaturated fatty acid in the modified master batch are subjected to cross-linking polymerization in the ultrasonic activation process to form an oligomeric amphiphilic surface active substance, wherein a long-chain part can be well fused with an asphaltene micelle to form a sol-gel structure, and a hydrophilic part can be fused with inorganic salt of a functional filler, so that the existence of the unsaturated fatty acid enhances the tight bonding degree between the functional filler and an asphalt binder, thereby improving the wear resistance, the skid resistance and other auxiliary functions of the coating material;

the lignocellulose is adopted as the stabilizer, and due to the excellent flexibility and dispersibility of the lignocellulose, the lignocellulose can form a three-dimensional net structure after being mixed with the asphalt cement, so that the adhesion between the asphalt cement and the functional filler is further increased, the layered segregation is avoided, and the stability and durability of the coating material are improved;

the addition of the drier plays roles of improving the film forming speed of the asphalt mixed coating material and accelerating the curing when the coating material acts on the damaged asphalt pavement;

and (seventh) when the coating material acts on the damaged asphalt pavement, various components can be uniformly dispersed on the exposed aggregate surface to play an effective protection role: wherein the functional filler and the asphalt binder in the coating material can form high-stiffness asphalt mastic on the surface of the bare aggregate, thereby improving the wear resistance of the pavement; the alkoxy of the silane coupling agent in the coating material can generate carbonyl reaction with the carbonic acid group on the surface of the functional filler, and silanol bonds are mutually associated to form a surface film to be attached to the surface of the bare aggregate, so that the close fusion between the coating material and the bare aggregate is further enhanced;

the coating material has the advantages of stable storage, uniform spraying, fast solvent volatilization after spraying, good adhesion (adhesion grade 5 grade), excellent wear resistance (service life 6-10 years), and capability of ensuring the specific and appropriate fluidity (the Brookfield viscosity at 20 ℃ is 2000-4000cPs), realizing spraying operation, reducing construction difficulty and improving working efficiency.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the following specific embodiments, but the invention is not limited by the following embodiments, namely, the embodiments are part of the embodiments of the invention, but not all 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.

The first embodiment is as follows: preparation of modified masterbatch

TABLE 3 modified masterbatch Material proportioning and parameter control

Description of materials:

oleic acid: molecular weight of 282.46, melting point of 13-14 ℃;

palmitoleic acid: molecular weight 254.41, melting point 0.5 ℃;

soybean oleic acid: 280-284 of molecular weight and 15 ℃ of melting point.

[ PREPARATION METHOD ]

Adding the main solvent II and the anti-permeability agent in the formula amount into a small-sized reaction kettle, stirring for 20min at 50 ℃ to completely dissolve the main solvent II and the anti-permeability agent, then sequentially adding the silane coupling agent and the modifying agent, maintaining the temperature, continuously stirring for 40min, naturally cooling to room temperature, and then carrying out ultrasonic treatment for a certain time to obtain activated modified master batches which are respectively marked as master batch 1, master batch 2, master batch 3, master batch 4, master batch 5, master batch 6, master batch 7 and master batch 8. The whole test process is carried out in a closed reaction container, and nitrogen is filled for deoxygenation before the test.

Example two: preparation of colour coating material for road

TABLE 4 coating Material ratios

Description of materials:

qingchuan rock asphalt: penetration 3(0.1mm) at 25 ℃ and softening point 220 ℃;

50# asphalt: penetration 45(0.1mm) at 25 deg.C, softening point 67 deg.C;

pitch # 40: penetration 38(0.1mm) at 25 deg.C, softening point 70 deg.C;

30# asphalt: penetration 28(0.1mm) at 25 ℃ and softening point 72 ℃.

[ PREPARATION METHOD ]

A1, heating the asphalt cement to 135 ℃, and then cooling to a state of maintaining a flowing and transportable state to obtain a component A;

A2. mixing the first main solvent and the modified master batch at the temperature of 50 ℃, and uniformly stirring to obtain a component B;

A3. and slowly adding the component A into a main stirrer of the component B for mixing, then sequentially adding the stabilizer, the drier, the functional filler and the colorant, and uniformly stirring to obtain the final asphalt pavement coating materials which are recorded as example one, example two, example three, example four, example five, example six, example seven and example eight.

The steps A1-A3 are all carried out in a closed container under the protection of nitrogen.

[ PRODUCT CONTROL ]

(1) Testing the viscosity of the prepared asphalt pavement long-acting hydrophobic coating material by using Bookefield (No. 6 spindle) at the temperature of 20 ℃, if the viscosity is higher than the control index of the required material, increasing the viscosity by 1 percent of the total amount of the prepared asphalt pavement long-acting hydrophobic coating material, adding a primary solvent I or a primary solvent II, uniformly stirring, and performing repeated viscosity test until the required viscosity is reached; if the viscosity of the material is lower than the control index, the functional filler is added according to the proportion of 1 percent of the total amount of the prepared asphalt pavement long-acting hydrophobic coating material, the mixture is uniformly stirred, and the viscosity is tested repeatedly until the required viscosity is reached.

(2) And (3) performing a pre-laying test on the coating material, and adding a drier according to a proportion of 1% of the total amount of the coating material before laying and using until the use requirement is met if a plurality of drying times do not meet the requirement.

[ Property measurement ]

The coating materials obtained by the preparation methods are filled into a container tank of spraying equipment, and after being uniformly stirred, a pavement spraying test is carried out, wherein the spraying amount is 1Kg/m²。

The control parameters are as follows:

a work vehicle: Halik-CH-32000I professional high-pressure spray truck;

spraying flow rate: 347 Kg/min;

spraying pressure: 20 Kg;

the speed per hour of the operation: 8 Km/h;

height above ground of the sprinkling pipe: 400 mm;

adjacent oil nozzle spacing: 300 mm.

[ test results ]

TABLE 5 test results

As can be seen from the experimental data in Table 5, the various properties of the materials of all the above examples meet the construction quality requirements. Wherein, the Brookfield viscosity data (2400-; the construction depth, the friction coefficient, the bonding strength and the wear resistance data are far superior to the standard quality requirements, which shows that the skid resistance and the wear resistance of the pavement are synchronously improved, and the service life of the pavement is greatly prolonged; the water permeability coefficient test result shows that the hydrophobic property of the pavement is improved. The drying time data shows that the traffic can be communicated for 1 hour at 30 ℃, the influence on road traffic is less, the traffic is bright in color after the traffic is communicated, and the visual guidance effect is obvious. In conclusion, the road color coating material and the preparation method thereof provided by the invention can greatly improve the characteristics of skid resistance, hydrophobicity, wear resistance and the like of the road surface while increasing the colorful color of the road, improve the comprehensive performance of the road surface, prolong the service life of the road surface, and have the advantages of simple and convenient implementation process and stable performance.