CN110330831A - A kind of reversible thermochromic road surface coating and preparation method thereof - Google Patents

Abstract

The invention relates to the technical field of road traffic, and specifically discloses a reversible thermochromic pavement coating and a preparation method thereof; it includes the following raw materials in parts by mass: 95-100 parts of water-soluble acrylic resin emulsion, 110-120 parts of silicone resin emulsion , 3-5 parts of defoamer, 120-135 parts of bentonite, 75-80 parts of thermochromic powder, 220-250 parts of deionized water. The reversible thermochromic pavement coating in this solution can act as a warning to the temperature.

Description

A kind of reversible thermochromic pavement coating and preparation method thereof

technical field

The invention relates to the technical field of road traffic, and specifically discloses a reversible thermochromic pavement coating and a preparation method thereof.

Background technique

The current road is generally paved with asphalt, but the color of the asphalt is monotonous, and the driver is prone to visual fatigue when driving for a long time. A kind of colored resin pavement has appeared behind, such as the invention of application number CN201510436436. Slippery pavement and its construction method. After the colored resin is laid on the pavement, it can warn drivers and alleviate visual fatigue on the one hand, and can beautify urban roads on the other hand.

However, the color of this colored resin is fixed and cannot be changed according to the temperature, and it cannot warn drivers and pedestrians when the temperature is high.

Contents of the invention

The object of the present invention is to provide a reversible thermochromic pavement coating capable of warning temperature and a preparation method thereof.

In order to achieve the above object, the technical solution of the present invention is: a reversible thermochromic pavement coating, comprising the following raw materials in parts by mass: 95-100 parts of water-soluble acrylic resin emulsion, 110-120 parts of silicone resin emulsion, defoaming 3-5 parts of agent, 120-135 parts of bentonite, 75-80 parts of thermochromic powder, 220-250 parts of deionized water.

The beneficial effects of this program are:

1. The color of the coating in this solution changes when the temperature rises. On the one hand, it can serve as a high temperature warning, reminding drivers or pedestrians to pay attention to protection when traveling. On the other hand, the color change can also relieve the driver’s eye fatigue, and Beautify city roads.

2. When the temperature rises, the coating has a variety of colors, such as using cool colors, which can give people a cool feeling, and using warm colors, which can play a high temperature warning effect.

3. This solution uses deionized water, which can avoid the introduction of other ions, thereby avoiding the adverse effects of ions on the mixing of raw materials.

Further, the raw materials of the temperature-sensitive color-changing powder include a chromogenic agent, a chromogenic agent and a solvent with a mass ratio of 1:1 to 5:30 to 70, and the chromogenic agents are triaryl methanes, fluoranes, spiropyrans, furan One or more of ketones, pyridines, and phenothiazines; the developer is one or more of phenols, carboxylic acids, and sulfonic acids; the solvent is alcohol, mercaptan, ketone, ether , one or more of phosphate, sulfonate, carboxylate, and sulfite.

The beneficial effect of this scheme is that the color of the coating changes only when the temperature is higher than the room temperature, thereby playing a warning role, and does not change when the temperature is lower than the room temperature, so as to avoid misjudgment. And the change of the coating color in this scheme is reversible, when the temperature lowers, the color of the coating returns to the original color.

Further, the pavement coating also includes 160-175 parts by mass of transparent powder.

The beneficial effects of the solution are: the transparent powder is acid-resistant and corrosion-resistant, which can improve the wear-resistant and scratch-resistant properties of the coating, thereby prolonging the service life of the coating.

Further, the pavement coating also includes 5-10 parts by mass of a wetting and dispersing agent.

The beneficial effects of the solution are: the wetting and dispersing agent has good wetting and dispersing ability, promotes the mixing of raw materials, can improve the intensity of color, and further improves the coating performance.

Further, the wetting and dispersing agent is one of alkylphenol polyoxyethylene ether, alkyl alcohol polyoxyethylene ether, ethylene glycol polyoxyethylene alkyl ester, and acetylene glycol.

The beneficial effects of this scheme are: alkylphenol polyoxyethylene ether, alkyl alcohol polyoxyethylene ether, ethylene glycol polyoxyethylene alkyl ester, and acetylene glycol can all be mixed with other raw materials to promote the mixing of raw materials effect.

Further, the pavement coating also includes 75-90 parts by mass of anti-skid abrasives.

The beneficial effect of the solution is that the anti-skid abrasive can improve the anti-skid effect of the road surface, thereby preventing the vehicle from slipping during driving, thereby improving driving safety.

Further, the anti-slip abrasive is one or more of quartz sand, corundum, and white corundum.

The beneficial effect of this scheme is that the cost of quartz sand is lower, and the cost of coating is effectively reduced. The hardness of corundum and white corundum is high, and the coating strength is better and the service life is longer.

Further, the anti-skid abrasive is 10-40 mesh.

The beneficial effect of this solution is: the particle size of the anti-slip abrasive is relatively large, so that the coating maintains a good anti-slip effect.

Further, a preparation method of a reversible thermochromic pavement coating comprises the following steps:

Step 1: Mix and stir the water-soluble acrylic resin emulsion, silicone resin emulsion and water for 30-60 seconds;

Step 2: Add bentonite and transparent powder, and stir for 5-10 minutes;

Step 3: Mix the chromogenic agent, chromogenic agent and solvent to obtain a thermochromic powder;

Step 4: Add thermochromic powder, wetting and dispersing agent and defoamer, mix and stir until the color is uniform.

The beneficial effect of this scheme is: the method in this scheme can be used to fully mix the raw materials, so as to ensure that the coating has better performance.

Further, step 3 and step 2 are performed simultaneously.

The beneficial effects of this scheme are: the simultaneous execution of step 3 and step 2 of this scheme effectively reduces the total time required for preparation and improves preparation efficiency.

Detailed ways

The following is further described in detail through specific implementation methods:

The raw material components of a kind of reversible thermochromic pavement coating of embodiment 1 to embodiment 4 are shown in the following table:

The above-mentioned defoaming agent is polydimethylsiloxane, and the wetting and dispersing agent can be selected from among alkylphenol polyoxyethylene ethers, alkyl alcohol polyoxyethylene ethers, ethylene glycol polyoxyethylene alkyl esters, and acetylene glycol. One or more of them, this embodiment is ethylene glycol polyoxyethylene alkyl ester; the anti-skid abrasive can be selected from one or more of quartz sand, carborundum and white corundum, and the anti-skid abrasive is 10-40 mesh, this The embodiment is quartz sand, and the quartz sand is 40 mesh.

The temperature-sensitive color-changing powder includes a chromogenic agent, a chromogenic agent and a solvent, wherein the chromogenic agent is one or more of triaryl methanes, fluoranes, spiropyrans, furanones, pyridines, and phenothiazines. The color developer is one or more of phenols, carboxylic acids, and sulfonic acids; the solvent is alcohol, mercaptan, ketone, ether, phosphoric acid ester, sulfonic acid ester, carboxylate, and sulfite one or more of. Specifically, the temperature-sensitive color-changing powders in Examples 1 to 4 are respectively temperature-sensitive color-changing powder A, temperature-sensitive color-changing powder B, and temperature-sensitive color-changing powder C, and the temperature-sensitive color-changing powder A includes a mass ratio of 1:3:50 Crystal violet lactone, bisphenol A, cetyl alcohol, temperature-sensitive color-changing powder B includes dodecylamine, rosebic acid, stearyl alcohol with a mass ratio of 1:5:70, and temperature-sensitive color-changing powder C is thermal Sensitive green, specifically, thermosensitive green TF-G produced by Wuhan Haishan Technology Co., Ltd. is selected as thermosensitive green in this embodiment.

The preparation method of the reversible thermochromic pavement coating in embodiment 1～embodiment 4 comprises the following steps:

Step 1: Mix and stir the water-soluble acrylic resin emulsion, silicone resin emulsion, and deionized water for 30-60 seconds;

Step 2: Add bentonite and transparent powder, and stir for 5-10 minutes;

Step 3: Mix the chromogenic agent, the chromogenic agent and the solvent while performing the operation of step 2 to obtain a temperature-sensitive color-changing powder;

Step 4: Add thermochromic powder, wetting and dispersing agent, defoamer and non-slip abrasive, mix and stir until the color is uniform.

The construction method of the reversible thermochromic pavement coating in embodiment 1～embodiment 4 comprises the following steps:

1) Preparation before construction: remove garbage, sundries, oil stains, etc. on the road surface. When the original road surface is smooth, sandblasting can be carried out, and then the original road surface can be dried by blowing dust with a wind machine;

2) Construction of coating material: Spray the stirred coating material to the ground with an amount of 3500-5000g/㎡;

3) Health preservation: the construction road section is closed and cured, and the traffic can be opened after 1 hour. When cured, the coating material sets itself.

The color-changing pavement prepared by the above method is tested for coating adhesion, anti-skid, discoloration temperature and effect. During the test, the discoloration process is visually observed, and the discoloration temperature is measured with an infrared thermometer. The test methods for the pull-out strength and friction coefficient According to GB/T16777 and JTGE60-T0964 respectively, the results are shown in the table below:

The reversible thermochromic pavement coatings in Examples 1 to 4 have good pull-out strength and are not easily damaged during use; in addition, the friction coefficient of the reversible thermochromic pavement coating is relatively large, and the It is not easy to slip, and the driving is safer. Moreover, when the temperature rises, the color of the road surface changes significantly, which can more intuitively reflect the ambient temperature, thereby serving as a warning for drivers and pedestrians.

What has been described above is only a preferred embodiment of the present invention, and it should be pointed out that for those skilled in the art, some modifications and improvements can be made without departing from the concept of the present invention, and these should also be regarded as the present invention. The scope of protection, these will not affect the effect of the implementation of the present invention and the practicability of the patent. The technologies, shapes and construction parts omitted in the present invention are all known technologies.

Claims (10)

1. a kind of reversible thermochromic road surface coating, it is characterised in that: the raw material including following mass parts: water-soluble acrylic tree 95~100 parts of fat liquor, 110~120 parts of silicone resin emulsion, 3~5 parts of defoaming agent, 130~135 parts of bentonite, temperature-sensitive become 75~80 parts of toner, 220~250 parts of deionized water.

2. reversible thermochromic road surface coating according to claim 1, it is characterised in that: the raw material of the heat discoloration powder Including mass ratio be 1:1~5:30~70 colour former, color developing agent and solvent, the colour former be triarylmethane compound, fluorane class, One of spiro-pyrans class, Furanones, pyridines, phenothiazines are a variety of, and the color developing agent is phenols, carboxylic acids, sulfonic acid One of class is a variety of；The solvent is alcohol, mercaptan, ketone, ether, phosphate, sulphonic acid ester, carboxylate, one in sulfite Kind is a variety of.

3. reversible thermochromic road surface coating according to claim 2, it is characterised in that: the road surface coating further includes matter Measure the transparent powder that part is 160~175 parts.

4. reversible thermochromic road surface coating according to claim 3, it is characterised in that: the road surface coating further includes matter Measure the wetting dispersing agent that part is 5~10 parts.

5. reversible thermochromic road surface coating according to claim 4, it is characterised in that: the wetting dispersing agent is alkyl One of phenol polyethenoxy ether, alkyl alcohol ethoxylates, ethylene glycol polyxyethylated ester, acetylene ethylene glycol.

6. reversible thermochromic road surface coating according to claim 2, it is characterised in that: the road surface coating further includes matter Measure the anti-skidding abrasive material that part is 75~90 parts.

7. reversible thermochromic road surface coating according to claim 6, it is characterised in that: the anti-skidding abrasive material is quartz One of sand, diamond dust, white fused alumina are a variety of.

8. reversible thermochromic road surface coating according to claim 6 and preparation method thereof, it is characterised in that: described anti-skidding Abrasive material is 10~40 mesh.

9. the preparation method of reversible thermochromic road surface coating described in a kind of claim 5, it is characterised in that: following steps:

Step 1: 30~60s is mixed in aqueous acrylic resin emulsion, silicone resin emulsion, water；

Step 2: bentonite and transparent powder is added, and stirs 5~10min；

Step 3: colour former, color developing agent and solvent being mixed, heat discoloration powder is obtained；

Step 4: heat discoloration powder, wetting dispersing agent and defoaming agent is added, it is uniform to mix to colouring.

10. the preparation method of reversible thermochromic road surface coating according to claim 9, it is characterised in that: the step 3 It is carried out simultaneously with step 2.