CN111892875B

CN111892875B - Spraying type colored asphalt and preparation method and use method thereof

Info

Publication number: CN111892875B
Application number: CN202010807461.5A
Authority: CN
Inventors: 裴晓光; 刘延军; 王衍法; 姜有山; 王志超
Original assignee: China National Offshore Oil Corp CNOOC; CNOOC Oil and Petrochemicals Co Ltd; CNOOC Research Institute of Refining and Petrochemicals Beijing Co Ltd; CNOOC Qingdao Heavy Oil Processing Engineering Technology Research Center Co Ltd
Current assignee: China National Offshore Oil Corp CNOOC; CNOOC Oil and Petrochemicals Co Ltd; CNOOC Research Institute of Refining and Petrochemicals Beijing Co Ltd; CNOOC Qingdao Heavy Oil Processing Engineering Technology Research Center Co Ltd
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2022-01-04
Anticipated expiration: 2040-08-12
Also published as: CN111892875A

Abstract

The invention relates to a spray type colored asphalt and a preparation method and a using method thereof, wherein the spray type colored asphalt comprises the following raw materials in parts by weight: 30-50 parts of a softening agent, 10-20 parts of a styrene-butadiene-styrene triblock copolymer, 40-50 parts of a plasticizer and 70-90 parts of a solvent; the solvent comprises an ester solvent and/or an alkane solvent. The spraying type colored asphalt provided by the invention does not need to use toxic and harmful solvents containing benzene and the like, but uses ester solvents and/or alkane solvents, can well dissolve softening agents, SBS and plasticizers, is harmless to human bodies, can be directly sprayed on the pavement, has low product viscosity and convenient construction, can realize short-term color recovery and tiny crack repair of the colored asphalt pavement, and has higher bonding performance.

Description

Spraying type colored asphalt and preparation method and use method thereof

Technical Field

The invention relates to the technical field of road asphalt, in particular to spraying type colored asphalt and a preparation method and a using method thereof.

Background

As a novel pavement technology, the color asphalt concrete pavement is increasingly used in places such as highways, roads or squares, thereby arousing wide interest and attention of people and being regarded as a novel green building material by the global engineering world. For a long time, road surfaces have only two colors, black (asphalt pavement) and white (cement pavement). With the development of economy, colored asphalt pavements with rich colors and excellent performance are gradually popularized. The colored asphalt has the effects of decorating roads, beautifying urban environment and the like, is applied to road sections or lanes with different functions (such as bus lanes, warning roads, park roads, non-motor vehicle lanes, parking spaces, landscape roads and the like), is used as a natural signal of traffic management, and can play a role in guiding traffic.

The commonly used color asphalt pavement materials at present are hot-mix color asphalt mixtures and two-component color anti-skid coatings. The hot mixing of the color asphalt mixture can adopt the existing asphalt hot mixing station and paving and rolling equipment, and has the characteristics of high mechanization degree, high construction speed and large-area construction. However, under the action of load, illumination and moisture, oil films on the surfaces of stones are peeled off, the color cannot be kept for a long time, the service life is short, particularly in northern areas with less rainfall and larger sand storm, after the colored pavement is used for a period of time, the pavement is stained with fine impurities such as dust and tire powder or is polluted by black oil stains, the color is not bright, the overall attractiveness is influenced by the dirt, and the cost is very high if the pavement is re-paved, including old road shoveling, new road paving and the like. The two-component color anti-slip coating has the characteristics of flexible construction and short curing time, but the construction mostly adopts a manual coating or manual mixing mode, the labor cost is high, the construction speed is slow, the coating is not suitable for large-area use, and meanwhile, the cementing material is a thermosetting material, once cracking occurs in winter, cracks can not be healed in summer, and the phenomenon of road surface hollowing and whole piece stripping can be easily caused when rainwater enters.

CN 106431125A discloses a cold-mix type colored asphalt mixture and a preparation method thereof, comprising: aromatic oil, rubber oil, petroleum resin, epoxy resin, modifier, plasticizer, diluent, diatomite, pigment, stabilizer, water, emulsifier, defoaming agent, aggregate, filler, cement, aqueous curing agent and expanding agent. The prepared cold-mixing type colored asphalt mixture has the high-temperature performance, the low-temperature performance, the water stability and the mechanical property of the hot-mixing asphalt mixture. The colored asphalt pavement paved by the asphalt mixture has the problem that the colored asphalt pavement needs to be paved again after fading, and the repairing cost is high.

CN 101928465A discloses a colored asphalt binder capable of being directly thrown into use and a preparation method thereof, wherein the binder consists of 25-38% of petroleum resin, 12-22% of aromatic oil, 8-15% of styrene-butadiene triblock copolymer, 28-32% of colored pigment, 5-10% of anti-sticking agent, 0.05-1% of plasticizer and 0.05-1% of antioxidant. The binder disclosed by the invention is simple in preparation method, and can meet the technical index requirements of various building asphalts by adjusting the contents of the petroleum resin, the aromatic oil and the styrene-butadiene triblock copolymer. The color asphalt binder with various colors such as red, yellow, blue and the like can also be produced by blending the color pigments. The color asphalt binder provided by the invention belongs to a hot-mix asphalt material, and also has the problems of high repair cost and low construction efficiency.

Generally speaking, the color of the colored asphalt pavement is not easy to maintain and clean, the existing mode has the defects of slow construction, high cost, insufficient performance and the like, an effective maintenance method is not available at present, a novel material which has good cohesiveness with the original pavement, certain wear resistance, short-term open traffic and low cost is urgently needed, and the functions of short-term color recovery of the old colored asphalt pavement, tiny crack repair and the like can be realized.

Disclosure of Invention

The invention aims to provide spraying type colored asphalt, wherein solid components in the spraying type colored asphalt can be well dissolved in a solvent, can be directly sprayed on a road surface, is convenient to construct, can realize short-term color recovery and tiny crack repair, and has low viscosity, high cohesiveness and high wear resistance.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides spraying type colored asphalt, which comprises the following components in parts by weight:

the solvent comprises an ester solvent and/or an alkane solvent.

The content of the softener is 30-50 parts, such as 32 parts, 34 parts, 36 parts, 38 parts, 40 parts, 42 parts, 44 parts, 46 parts, 48 parts and the like;

the SBS content is 10-20 parts, such as 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 7 parts, 18 parts, 19 parts and the like;

the content of the plasticizer is 40-50 parts, such as 41 parts, 42 parts, 43 parts, 44 parts, 45 parts, 46 parts, 47 parts, 48 parts, 49 parts and the like;

the content of the solvent is 70 to 90 parts, such as 72 parts, 74 parts, 76 parts, 78 parts, 80 parts, 82 parts, 84 parts, 86 parts, 88 parts and the like.

The invention provides a novel spraying type colored asphalt, which does not need to use toxic and harmful solvents containing benzene and the like, but uses ester solvents and/or alkane solvents, can well dissolve softening agents, SBS and plasticizers, is harmless to human bodies, can be directly sprayed on road surfaces, has low product viscosity and convenient construction, and can realize short-term color recovery and tiny crack repair.

In addition, the ester solvent and/or the alkane solvent can be quickly volatilized after being sprayed, so that the asphalt is tightly combined with the pavement, and the asphalt has high bonding performance.

Preferably, the solvent comprises a combination of an ester solvent and an alkane solvent.

According to the invention, the ester and alkane solvents are preferably selected for compound use, and the combination of the ester and alkane solvents can further improve the solubility of the solid component and keep a certain volatilization speed, so that the sprayed asphalt coating is more uniform, and the spray head is not easy to block.

Preferably, the mass ratio of the ester solvent to the alkane solvent is 1: 9-9: 1, such as 2:8, 3:7, 4:6, 5:5, 6:4, 7:3, 8:2, and the like.

The invention can further improve the solubility of the solid component by optimizing the adding proportion of the two solvents, and is more beneficial to later spraying.

Preferably, the ester solvent includes any one or a combination of at least two of methyl acetate, ethyl acetate or ethyl methyl carbonate.

Preferably, the alkane solvent comprises any one or at least two of cyclohexane, 120 # solvent oil or 140 # solvent oil.

Preferably, the softening agent comprises any one or at least two of naphthenic base oil, reduced three-line extract oil or aromatic oil.

Preferably, the styrene-butadiene-styrene triblock copolymer comprises a linear styrene-butadiene-styrene triblock copolymer, preferably any one or a combination of at least two of LG501, barlingh YH-791 or dinnesol C501H.

Preferably, the plasticizer comprises any one or at least two of C5 petroleum resin, C9 petroleum resin or C5/C9 copolymer resin.

Preferably, the raw material for preparing the spray-type colored asphalt further comprises 0.5 to 2 parts of a toner, such as 0.6 part, 0.7 part, 0.8 part, 0.9 part, 1 part, 1.1 part, 1.2 parts, 1.3 parts, 1.4 parts, 1.5 parts, 1.6 parts, 1.7 parts, 1.8 parts, 1.9 parts, etc. The kind of the toner can be selected by those skilled in the art according to actual needs, and the present invention is not particularly limited thereto.

Preferably, the raw material for preparing the spray-type colored asphalt further comprises 40-80 parts of fillers, such as 42 parts, 44 parts, 46 parts, 48 parts, 50 parts, 52 parts, 54 parts, 56 parts, 58 parts, 60 parts, 62 parts, 64 parts, 68 parts, 70 parts, 72 parts, 74 parts, 78 parts and the like.

In the preferred technical scheme of the invention, the filler is added, and the proportion of the softening agent, the SBS, the plasticizer and the filler is optimized, so that the wear resistance can be effectively improved, and the service life can be prolonged. Any one of the above components in an amount outside the scope of the present invention may deteriorate the adhesion and abrasion resistance.

Preferably, the filling material comprises any one or at least two of mineral powder, talcum powder, titanium pigment, marble powder, dolomite powder and limestone powder.

Preferably, the preparation raw material of the spray type colored asphalt comprises the following components in parts by weight:

the second purpose of the invention is to provide a preparation method of the spraying type colored asphalt, which comprises the following steps:

(1) mixing the softener, the plasticizer and the styrene-butadiene-styrene triblock copolymer according to the formula ratio, and heating and shearing to obtain the colored asphalt cement;

(2) and mixing the asphalt mixture with a solvent according to the formula amount to obtain the spray type colored asphalt.

Preferably, step (1) specifically comprises: and mixing the softening agent and the plasticizer, heating for the first time, stirring for the first time, heating for the second time, adding the styrene-butadiene-styrene triblock copolymer, and shearing and dispersing to obtain the color asphalt cement.

Preferably, in step (1), the temperature of the first temperature rise is 130-180 ℃, such as 135 ℃, 140 ℃, 145 ℃, 150 ℃, 155 ℃, 160 ℃, 165 ℃, 170 ℃, 175 ℃ and the like.

Preferably, in step (1), the first stirring time is 0.5-1h, such as 0.6h, 0.7h, 0.8h, 0.9h and the like.

Preferably, in step (1), the temperature of the second temperature rise is 180-.

Preferably, in step (1), the shear dispersion time is 1-2h, such as 1.2h, 1.4h, 1.6h, 1.8h, etc.

Preferably, in step (1), the following steps are performed after the shear dispersion: adding the toner and stirring for the second time.

Preferably, the temperature of the second stirring is 140-180 ℃, such as 145 ℃, 160 ℃, 165 ℃, 170 ℃, 175 ℃ and the like.

Preferably, the time of the second stirring is 0.5 to 1h, such as 0.6h, 0.7h, 0.8h, 0.9h, and the like.

Preferably, step (1) is carried out in an asphalt modification tank.

Preferably, the step (2) specifically comprises: mixing the color asphalt cementing material with an ester solvent, stirring for the third time, then adding an alkane solvent, and stirring for the fourth time.

Preferably, the third stirring temperature is 10-50 deg.C, such as 15 deg.C, 16 deg.C, 20 deg.C, 25 deg.C, 30 deg.C, 35 deg.C, 40 deg.C, 45 deg.C etc.

Preferably, the time of the third stirring is 0.5 to 4h, such as 0.6h, 0.8h, 1h, 1.2h, 1.4h, 1.8h, 2h, 2.2h, 2.4h, 2.6h, 2.8h, 3h, 3.2h, 3.4h, 3.6h, 3.8h, and the like.

Preferably, the fourth stirring time is 0.5-2h, such as 0.7h, 0.8h, 0.9h, 1h, 1.1h, 1.2h, 1.3h, 1.4h, 1.5h, 1.6h, 1.7h, 1.8h, 1.9h, and the like.

Preferably, step (2) further comprises: and mixing the colored asphalt cement with a solvent, adding a filler, and stirring for the fifth time.

Preferably, the fifth stirring is performed at normal temperature.

Preferably, the time of the fifth stirring is 0.5-2h, such as 0.7h, 0.8h, 0.9h, 1h, 1.1h, 1.2h, 1.3h, 1.4h, 1.5h, 1.6h, 1.7h, 1.8h, 1.9h, and the like.

Preferably, step (2) is carried out in a stirred tank:

preferably, the preparation method specifically comprises the following steps:

(1) mixing the softening agent and the plasticizer according to the formula amount, heating to 130-180 ℃, stirring for 0.5-1h, heating to 180-190 ℃, adding the styrene-butadiene-styrene triblock copolymer for shearing, shearing and dispersing for 1-2h, adding the toner, controlling the temperature at 140-180 ℃, and stirring for 0.5-1h to obtain the color asphalt cement;

(2) adding the colored asphalt cement into an ester solvent, controlling the temperature at 10-50 ℃, stirring for 0.5-4h, then adding an alkane solvent, and stirring for 0.5-2 h;

(3) and (3) adding a filling material into the solution obtained in the step (2), and stirring at normal temperature for 0.5-2h to obtain the spray type colored asphalt.

The invention also aims to provide a using method of the spraying type colored asphalt, which comprises the following steps: spraying the spraying type colored asphalt according to one of the purposes on a road surface.

Preferably, the method of use comprises:

(1) cleaning up the impurity and dust in the construction area, particularly in the crack place, directly constructing the fine cracks, and constructing after repairing the large cracks and holes;

(2) the prepared spraying type colored asphalt is fully stirred, and the colored asphalt is uniformly sprayed on the pavement through a spraying vehicle or a spray gun, so that the spraying speed is required to be continuous and uniform, and the pavement is kept flat.

Compared with the prior art, the invention has the following beneficial effects:

the spraying type colored asphalt provided by the invention does not need to use toxic and harmful solvents containing benzene and the like, but uses ester solvents and/or alkane solvents, can well dissolve softening agents, SBS and plasticizers, is harmless to human bodies, can be directly sprayed on a road surface, has low product viscosity and convenient construction, and can realize short-term color recovery and tiny crack repair.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments. It should be understood by those skilled in the art that the examples are only for the understanding of the present invention and should not be construed as the specific limitations of the present invention.

The raw materials used in the following examples and comparative examples are as follows:

example 1:

the embodiment provides a spraying type colored asphalt, which comprises the following raw materials:

the preparation method of the spray type colored asphalt comprises the following steps:

(1) adding the three-line-reduced extract oil and C5 petroleum resin into an asphalt modification tank, heating to 160 ℃, stirring for 1 hour, uniformly mixing, then heating to 180 ℃, adding SBS, shearing for 1.5 hours, keeping the temperature unchanged, adding 1 part of toner, stirring for 0.5 hour, and uniformly mixing;

(2) adding ethyl acetate into a stirring tank, slowly adding the molten colored asphalt into the stirring tank, continuously stirring, controlling the temperature at 40 ℃, stirring for 2 hours, uniformly dispersing, then adding No. 120 solvent oil, continuously stirring, controlling the temperature at 30 ℃, and stirring for 1 hour, uniformly dispersing;

(3) adding dolomite powder into the uniformly dispersed solvent, stirring and mixing at normal temperature for 0.5h, and uniformly mixing to prepare the spray type colored asphalt.

Example 2:

(2) adding methyl acetate into a stirring tank, slowly adding the molten colored asphalt into the stirring tank, continuously stirring, controlling the temperature at 40 ℃, stirring for 2 hours, uniformly dispersing, then adding cyclohexane, continuously stirring, controlling the temperature at 30 ℃, and stirring for 1 hour, uniformly dispersing;

(3) adding limestone powder into the uniformly dispersed solvent, stirring and mixing at normal temperature for 0.5h, and uniformly mixing to prepare the spray type colored asphalt.

Example 3:

(1) adding aromatic oil and C9 petroleum resin into an asphalt modification tank, heating to 160 ℃, stirring for 1 hour, uniformly mixing, then heating to 180 ℃, adding SBS, shearing for 1.5 hours, keeping the temperature unchanged, adding 1 part of toner, stirring for 0.5 hour, and uniformly mixing;

(2) adding ethyl acetate into a stirring tank, slowly adding the molten colored asphalt into the stirring tank, continuously stirring, controlling the temperature at 40 ℃, stirring for 2 hours, uniformly dispersing, then adding No. 140 solvent oil, continuously stirring, controlling the temperature at 30 ℃, and stirring for 1 hour, uniformly dispersing;

(3) adding talcum powder and mineral powder into the uniformly dispersed solvent, stirring and mixing at normal temperature for 0.5h, and uniformly mixing to prepare the spray type colored asphalt.

Example 4:

(1) adding naphthenic base oil and C5/C9 copolymer resin into an asphalt modification tank, heating to 160 ℃, stirring for 1 hour, uniformly mixing, then heating to 180 ℃, adding SBS, shearing for 1.5 hours, keeping the temperature unchanged, adding 1 part of toner, stirring for 0.5 hour, and uniformly mixing;

(2) adding methyl ethyl carbonate into a stirring tank, slowly adding the molten colored asphalt into the stirring tank, continuously stirring, controlling the temperature at 40 ℃, stirring for 2 hours, uniformly dispersing, then adding No. 120 solvent oil, continuously stirring, controlling the temperature at 30 ℃, and stirring for 1 hour, uniformly dispersing;

(3) adding the marble powder into the uniformly dispersed solvent, stirring and mixing at normal temperature for 0.5h, and uniformly mixing to prepare the spray type colored asphalt.

Example 5:

the difference from example 1 is that 20 parts of ethyl acetate are replaced with 20 parts of No. 120 mineral spirits.

Example 6:

the difference from example 1 is that 50 parts of No. 120 mineral spirits are replaced with 50 parts of ethyl acetate.

Examples 7-1 to 7-4:

the difference from example 1 is that the total amount of ethyl acetate and the number 120 mineral spirits is not changed (70 parts), and the mass ratio of ethyl acetate to the number 120 mineral spirits is 1:9 (example 7-1), 9:1 (example 7-2), 0.5:9.5 (example 7-3), and 9.5:0.5 (example 7-4), respectively.

Example 8:

the difference from example 1 is that the dolomite powder was added in an amount of 35 parts.

Example 9:

the difference from example 1 is that the dolomite powder is added in an amount of 85 parts.

Example 10:

(1) adding the three-line-reduced extract oil and C5 petroleum resin into an asphalt modification tank, heating to 130 ℃, stirring for 1h, uniformly mixing, then heating to 180 ℃, adding SBS, shearing for 2h, keeping the temperature unchanged, adding toner, stirring for 1h, and uniformly mixing;

(2) adding ethyl acetate into a stirring tank, slowly adding the molten colored asphalt into the stirring tank, continuously stirring, controlling the temperature at 10 ℃, stirring for 4 hours, uniformly dispersing, then adding No. 120 solvent oil, continuously stirring, controlling the temperature at 30 ℃, and stirring for 2 hours, uniformly dispersing;

(3) adding dolomite powder into the uniformly dispersed solvent, stirring and mixing at normal temperature for 2h, and uniformly mixing to prepare the spray type colored asphalt.

Example 11:

(1) adding the three-line-reduced extract oil and C5 petroleum resin into an asphalt modification tank, heating to 180 ℃, stirring for 0.1h, uniformly mixing, then heating to 190 ℃, adding SBS, shearing for 1h, keeping the temperature unchanged, adding toner, stirring for 0.5h, and uniformly mixing;

(2) adding ethyl acetate into a stirring tank, slowly adding the molten colored asphalt into the stirring tank, continuously stirring, controlling the temperature at 50 ℃, stirring for 0.5h, uniformly dispersing, then adding No. 120 solvent oil, continuously stirring, controlling the temperature at 30 ℃, and stirring for 0.5h, uniformly dispersing;

Comparative example 1:

the difference from example 1 is that ethyl acetate and 120 # solvent oil were replaced with 70 parts of toluene.

Comparative example 2:

the difference from example 1 is that the reduced wire draw-off oil content is 55 parts.

Comparative example 3:

the difference from example 1 is that the amount of the reduced wire draw-off oil was 20 parts.

Comparative example 4:

the difference from example 1 is that the SBS content is 5 parts.

Comparative example 5:

the difference from example 1 is that the SBS content is 25 parts.

Comparative example 6:

the difference from example 1 is that the content of the C5 petroleum resin was 35 parts.

Comparative example 7:

the difference from example 1 is that the content of the C5 petroleum resin was 55 parts.

Performance testing

The following tests were carried out on the spray-type colored asphalt obtained in the above examples and comparative examples:

(1) and (3) testing the solubility: according to the formulations of the above examples and comparative examples, the softener, SBS and plasticizer were dissolved in the respective solvents, filtered through glass fiber filter paper, and the insoluble matter was washed, dried and weighed, and the solubility was calculated. The solubility calculation formula ═ (sample mass-insoluble matter mass) × 100/sample mass.

The test results are shown in table 1.

Table 1 solubility test results

As can be seen from Table 1, the solid content of the spray-type colored asphalt provided by the present invention can be well dissolved in the solvent to achieve spraying. The solubility of example 1 is comparable to that of comparative example 1, but the problem of the toxicity and harm of toluene in comparative example 1 is avoided.

It is understood from comparative examples 1, 5 and 6 that when an ester solvent and an alkane solvent are used in combination (example 1), the two solvents act synergistically to further improve the solubility; as is clear from comparative examples 1, 7-1 to 7-4, the solubility can be further improved by controlling the ratio of the two solvents within a certain range (examples 1, 7-1 and 7-2).

(2) Asphalt Performance test

The three components of the softener, SBS and plasticizer in the above examples and comparative examples were mixed in the ratio and tested as follows:

penetration degree: JTG E20-2011 test procedure for road engineering asphalt and asphalt mixtures T0604-2011;

softening point: JTG E20-2011 test procedure for road engineering asphalt and asphalt mixtures T0606-2011;

ductility: JTG E20-2011 test procedure for road engineering asphalt and asphalt mixtures T0605-2011.

The test results are shown in table 2.

TABLE 2 color asphalt Performance index

	Example 1	Example 2	Example 3	Example 4	Example 10	Example 11
							Penetration, 0.1mm	75	82	59	69	58	70
Softening point, DEG C	56.2	55.8	60.8	63.2	66.8	67.8
							Ductility, cm at 10 ℃	72	82	81	87	61	86
	Comparative example 2	Comparative example 3	Comparative example 4	Comparative example 5	Comparative example 6	Comparative example 7
							Penetration, 0.1mm	83	35	70	40	79	30
Softening point, DEG C	51	69.5	52.3	68.3	51.5	67.8
							Ductility, cm at 10 ℃	89	31	25	42	73	16

As can be seen from Table 2, the asphalt provided by the present invention has both high softening point and ductility. In comparison with example 1, comparative examples 2 to 7, in which the contents of the softening agent, SBS and plasticizer were adjusted to be out of the preferable ranges, respectively, had too low softening point or too low ductility, and it was difficult to balance the two indexes of softening point and ductility. It is understood that the proportions of the components are critical in the present invention, and that any one outside of these ranges may deteriorate the performance.

(3) Road surface performance test after spraying

Wear resistance: refer to T0964-2008 pendulum instrument road surface friction coefficient test method in JTG 3450 and 2019 road bed and road surface on-site test regulations;

water impermeability: refer to GB/T16777 and 2008 'test method for waterproof coating for building' for water impermeability test;

adhesion: refer to GB/T16777 and 2008 'test method for building waterproof coating' for bond strength test;

and (3) crack resistance: refer to GB/T16777 and 2008 'test method for waterproof coating for building' for crack resistance test.

The test results are shown in table 3.

TABLE 3 road surface Performance test results

As can be seen from Table 3, the asphalt provided by the present invention has high hardness, abrasion resistance, water resistance, adhesion and crack resistance after spraying. In comparative examples 2 to 7, and examples 8 and 9, in which the contents of the softener, SBS, plasticizer and filler were adjusted to be outside the preferred ranges, respectively, problems of deterioration in abrasion resistance, water resistance, adhesion or crack resistance occurred, and thus it was confirmed that it is critical to optimize the compounding ratio among the filler, the softener, SBS, plasticizer and filler in the present invention, and that any one of the above-mentioned ranges may deteriorate the performance.

The present invention is illustrated in detail by the examples described above, but the present invention is not limited to the details described above, i.e., it is not intended that the present invention be implemented by relying on the details described above. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.

Claims

1. The spray type colored asphalt is characterized in that the preparation raw materials of the spray type colored asphalt comprise the following components in parts by weight:

the solvent comprises a combination of an ester solvent and an alkane solvent;

the mass ratio of the ester solvent to the alkane solvent is 1: 9-9: 1;

the ester solvent comprises any one or at least two of methyl acetate, ethyl acetate or methyl ethyl carbonate;

the alkane solvent comprises any one or at least two of cyclohexane, 120 # solvent oil or 140 # solvent oil.

2. The spray-type colored asphalt according to claim 1, wherein the softening agent comprises any one or at least two of naphthenic base oil, reduced-trilinear extraction oil or aromatic oil.

3. The sprayable colored asphalt of claim 1, wherein the styrene-butadiene-styrene triblock copolymer comprises a linear styrene-butadiene-styrene triblock copolymer.

4. The sprayable color asphalt of claim 3, wherein the styrene-butadiene-styrene triblock copolymer comprises any one or a combination of at least two of LG501, ba Ling YH-791 or Dynasol C501H.

5. The spray-type colored asphalt according to claim 1, wherein the plasticizer comprises any one or a combination of at least two of C5 petroleum resin, C9 petroleum resin or C5/C9 copolymer resin.

6. The spray-type colored asphalt according to claim 1, wherein the filler comprises any one or a combination of at least two of mineral powder, talcum powder, titanium pigment, marble powder, dolomite powder or limestone powder.

7. A method for preparing the spray-type colored asphalt according to any one of claims 1 to 6, wherein the method comprises the following steps:

(2) and mixing the colored asphalt cement with a solvent according to the formula amount to obtain the spray-type colored asphalt.

8. The preparation method according to claim 7, wherein the step (1) specifically comprises: and mixing the softening agent and the plasticizer, heating for the first time, stirring for the first time, heating for the second time, adding the styrene-butadiene-styrene triblock copolymer, and shearing and dispersing to obtain the color asphalt cement.

9. The method as claimed in claim 8, wherein the first temperature rise in step (1) is at a temperature of 130-180 ℃.

10. The method according to claim 8, wherein in the step (1), the first stirring is carried out for 0.5 to 1 hour.

11. The method as claimed in claim 8, wherein the temperature of the second temperature rise in step (1) is 180-190 ℃.

12. The method according to claim 8, wherein the shear dispersion time in step (1) is 1 to 2 hours.

13. The production method according to claim 8, characterized in that, in step (1), the following step is performed after the shear dispersion: adding the toner and stirring for the second time.

14. The method as claimed in claim 13, wherein the temperature of the second stirring is 140-180 ℃.

15. The method of claim 13, wherein the second stirring is carried out for a period of time of 0.5 to 1 hour.

16. The method according to claim 7, wherein the step (1) is performed in an asphalt-modifying tank.

17. The method according to claim 7, wherein the step (2) specifically comprises: mixing the color asphalt cementing material with an ester solvent, stirring for the third time, then adding an alkane solvent, and stirring for the fourth time.

18. The method of claim 17, wherein the third stirring is performed at a temperature of 10 to 50 ℃.

19. The method of claim 17, wherein the third stirring is carried out for a period of time of 0.5 to 4 hours.

20. The method of claim 17, wherein the fourth stirring is performed for a period of time ranging from 0.5 to 2 hours.

21. The method according to claim 17, further comprising, in step (2): and mixing the colored asphalt cement with a solvent, adding a filler, and stirring for the fifth time.

22. The production method according to claim 21, wherein the fifth stirring is performed at normal temperature.

23. The method of claim 21, wherein the fifth stirring is performed for a time of 0.5-2 hours.

24. The method according to claim 7, wherein the step (2) is carried out in a stirred tank.

25. The preparation method according to claim 7, characterized in that the preparation method specifically comprises the steps of:

26. Use of the sprinkling type colored asphalt according to any one of claims 1 to 6, wherein the use comprises: spraying the spray-type colored asphalt of any one of claims 1 to 6 on a road surface.