CN109486303B - A kind of flushable self-luminous road marking paint composition and preparation method thereof - Google Patents

Abstract

The invention discloses a washable self-luminous road sign coating composition and a preparation method thereof. The invention has the following beneficial effects: compared with the traditional road sign coating, the self-luminous road sign coating is prepared by taking the water-soluble PVA resin as the matrix resin, the distilled water as the solvent and the rare earth luminescent material as well, can be directly washed and removed by water under a certain temperature condition, and solves the problems that the traditional road sign coating is difficult to remove and change and the like. The raw materials have wide sources and are environment-friendly, the operation process is simple, no toxic or harmful pollution is generated in the production process, and meanwhile, the materials can be recycled.

Description

A kind of flushable self-luminous road marking paint composition and preparation method thereof

technical field

The invention relates to a flushable self-luminous road marking paint composition and a preparation method thereof, belonging to the technical field of novel environmental protection road marking paints.

Background technique

In recent years, with the increasing living standards of residents, cars have gradually become people's consumer goods and entered people's lives. As part of the road security facilities, the main role of road markings is to provide drivers with a visual guide to make the busy traffic flow. It is an important part of road traffic safety to be able to go its own way and ensure that the vehicle runs quickly and safely.

The traditional road marking paint is mainly based on hot-melt type road marking paint, and the purpose of luminescence is achieved by adding reflective beads. Chinese patent document CN106634310A discloses an environmentally friendly water-based road marking paint and its preparation method. The paint is composed of A, B It consists of two components, wherein component A, by weight percentage, comprises 10-35% of epoxy-modified acrylic emulsion; 5-25% of fluorosilicon emulsion; 0.1-0.5% of wetting agent; 0.1-0.5% of dispersant; Defoamer 0.1～0.5%; Pigment 5～15%; Filler 35～55%; Cosolvent 5～10%; 0.5%; the balance of water; component B is a water-based epoxy curing agent. The road marking paint has excellent wear resistance, weather resistance, stain resistance and excellent adhesion, and has excellent bonding ability with cement pavement. Corrosion and peeling of paint film caused by anti-alkali on cement pavement. Chinese patent document CN104250489A discloses a weather-resistant reflective road marking paint, and Chinese patent document CN104250489A discloses a weather-resistant reflective road marking paint, but it is difficult to remove after traditional road marking paint is applied. It has a huge impact on the need for road renovation or traffic route changes.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the problems of self-luminescence and subsequent removal of traditional road marking paints, provide a flushable self-luminous road marking paint composition and a preparation method thereof, and provide an environmentally friendly, fast and reliable solution to the above problems.

The present invention is achieved through the following technical solutions:

The present invention provides a flushable self-luminous road marking paint composition, which comprises the following components in parts by weight:

As a preferred solution, the degree of polymerization of the PVA resin is 1600-1800, and the degree of alcoholysis is 98-100%.

This is because when the degree of polymerization of the PVA resin is less than 1600, the material is easily hydrolyzed or swelled at a lower temperature, which affects the bonding strength between the paint and the road surface. When the degree of polymerization of the PVA resin is greater than 1800, the viscosity of the material aqueous solution is too high, which is not conducive to Actual Production.

As a preferred solution, the alumina is in the shape of flakes, the particle size is 0.5-1.5 μm, and the aspect-to-thickness ratio is 3-8.

This is because flaky alumina with a particle size of 0.5-1.5 μm and a diameter-thickness ratio of 3-8 is used as the reinforcing material, and the "slip" property between the flaky alumina flaky structures is used to enhance the effect. Spherical alumina or cubic structure alumina is not as strong as flake alumina.

As a preferred solution, the hydrophobic agent is a modified paraffin emulsion type hydrophobic agent.

As a preferred solution, the rare earth light-emitting material is at least one of cerium oxide, europium oxide, and dysprosium oxide.

As a preferred solution, the defoamer is at least one of water-soluble organosilicon and organofluorine.

As a preferred solution, the leveling agent is an alkyl-modified organosiloxane-based leveling agent and/or a polyether-modified organosiloxane-based leveling agent.

As a preferred solution, the ultraviolet absorbers are 2-hydroxy-4-n-octyloxybenzophenone and 2-(2'-hydroxy-3',5'-di-tert-phenyl)-5-chlorobenzene One or both of the triazoles.

As a preferred solution, the antibacterial agent is one or both of a silver ion antibacterial agent and a quaternary ammonium salt antibacterial agent.

A preparation method of the aforementioned flushable self-luminous road marking paint composition, comprising the steps of:

Add distilled water into the reaction kettle, heat it to 90-100℃, start the stirrer to stir and then add PVA resin. After the PVA resin is completely dissolved, add alumina, hydrophobic agent, rare earth luminescent material, defoamer, leveling agent and ultraviolet light in sequence. The absorbent and the antibacterial agent are uniformly stirred for 1-2 hours and then left to stand, and the materials are discharged to obtain a washable self-luminous road sign paint composition.

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

1. Compared with the traditional road marking paint, the present invention uses water-soluble PVA resin as the matrix resin, distilled water as the solvent, and adds rare earth luminescent materials at the same time. The road marking paint is washed and removed to solve the problems of difficult removal and change of traditional road marking paint.

2. Since the coating uses water-soluble PVA resin as the matrix resin, it has a certain degree of hydrophilicity, and it is easy to swell and detach from the road surface when it is in contact with water for a long time. The modified paraffin emulsion hydrophobic agent is used as the coating hydrophobic agent to form hydrophobicity on the surface of the coating. layer, the barrier coating is in contact with water for a long time, and the service life of the coating is improved. Under the condition of hot water flushing, it can be melted and digested by itself, so that the road marking coating can be washed;

3. Adding rare earth luminescent material and flake alumina not only improves the self-luminous time of road marking paint, but also greatly improves the wear resistance of road marking paint.

4. The raw materials are widely sourced and environmentally friendly, the operation process is simple, there is no toxic and harmful pollution in the production process, and the materials can be recycled and reused.

Description of drawings

Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

1 is a graph showing the influence of the appearance of the road surface coated with the flushable self-luminous road marking paint prepared in Example 1 of the present invention and the non-flushable self-luminous road marking paint of Comparative Example 1 by rinsing with 90-100° C. hot water.

Detailed ways

The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

The PVA resin model used in the embodiment of the present invention is: PVA17-99 (L), selected from Anhui Wanwei High-tech Materials Co., Ltd.;

The alumina used in the embodiment of the present invention is flake alumina, with a particle size of 0.5-1.5 μm and a diameter-to-thickness ratio of 3-8, selected from Shanghai Jingrui Chemical Co., Ltd., model: JR-0845P;

The modified paraffin emulsion hydrophobic agent used in the embodiment of the present invention is selected from keim-additec in Germany, model: E-360;

The rare earth cerium oxide (CeO ₂ ), rare earth europium oxide (Eu ₂ O ₃ ), and rare earth dysprosium oxide (Dy ₂ O ₃ ) rare earth luminescent materials used in the embodiments of the present invention are commercially available products;

The water-soluble organic silicon and organic fluorine defoamers used in the examples of the present invention are BYK-028 from Germany and CI-1094 from Guangdong Nanhui New Materials Co., Ltd.;

The alkyl-modified organosiloxane leveling agent used in the examples of the present invention is TR-9323 of Changzhou Sinoer Chemical Co., Ltd., and the polyether-modified organosiloxane leveling agent is Foshan Qianyou Chemical Co., Ltd. AKN -1131.

2-Hydroxy-4-n-octyloxybenzophenone and 2-(2'-hydroxy-3',5'-di-tert-phenyl)-5-benzotriazole chloride used in the examples of the present invention The absorbers are UV-531 and UVP-327, respectively, commercially available.

The silver ion antibacterial agent used in the embodiment of the present invention is selected from ws-L05 of Guangzhou Zhongwan New Materials Co., Ltd., and the quaternary ammonium salt antibacterial agent is selected from DR-2141 of Dongguan Centennial Hongtu Chemical Technology Co., Ltd.

Example 1

This embodiment relates to a flushable self-luminous road marking paint, which is prepared according to the following raw material ratios:

Example 2

This embodiment relates to a flushable self-luminous road marking paint, which is prepared according to the following raw material ratios:

Example 3

This embodiment relates to a flushable self-luminous road marking paint, which is prepared according to the following raw material ratios:

Example 4

This embodiment relates to a flushable self-luminous road marking paint, which is prepared according to the following raw material ratios:

Example 5

The present embodiment relates to the preparation method of flushable self-luminous road marking paint, and the specific steps are as follows:

Add distilled water into the reaction kettle, heat it to 90-100°C, start the stirrer and stir and then add PVA resin respectively. After the PVA resin is completely dissolved, add alumina, hydrophobic agent, rare earth luminescent material, defoamer,

The leveling agent, the ultraviolet absorber and the antibacterial agent are evenly stirred for 1-2 hours and then left to stand, and the material is discharged to obtain a flushable self-luminous road marking paint.

Comparative Example 1

This comparative example relates to a non-flushing self-luminous road marking paint, which is formulated according to the following raw material ratios:

Comparative Example 2

This comparative example relates to a non-flushing self-luminous road marking paint, which is formulated according to the following raw material ratios:

Comparative Example 3

This comparative example relates to a flushable self-luminous road marking paint, the formula and preparation method of which are basically the same as those in Example 1, the difference is only that flake alumina is not added in this comparative example.

Comparative Example 4

This comparative example relates to a flushable self-luminous road marking paint, and its formula and preparation method are basically the same as those in Example 1, the only difference is that the luminescent powder used in this comparative example is strontium carbonate luminescent powder.

Comparative Example 5

This comparative example relates to a flushable self-luminous road marking paint, and its formula and preparation method are basically the same as those in Example 1, the difference is only that the alumina used in this comparative example is spherical alumina.

Comparative Example 6

This comparative example relates to a flushable self-luminous road marking paint, and its formula and preparation method are basically the same as those in Example 1, the difference is only that the alumina used in this comparative example is cubic alumina. .

Performance Testing

Performance tests were performed on Examples 1 to 4 and Comparative Examples 1 to 6, respectively, and the results are shown in Table 1.

Table 1 Performance measurement results

It can be seen from the results in Table 1:

(1) Examples 1-4 and Comparative Examples 1-6, the afterglow time of Examples 1-4 is obviously better than that of Comparative Examples 1-6. Flushing self-luminous road marking paint can achieve flushing,

(2) Example 1 and Comparative Examples 5 to 6, Example 1 uses flake alumina as the reinforcing material, and the wear resistance is significantly better than that of Comparative Examples 5 to 6, which uses spherical alumina and cubic alumina as the reinforcing material.

(3) Figure 1 shows the influence of the appearance of the flushable self-luminous road marking paint prepared in Example 1 of the present invention and the non-flushable self-luminous road marking paint coated road surface with 90-100 ℃ hot water. Example 1 Using water-soluble PVA resin as the matrix resin, distilled water as the solvent, and adding rare earth luminescent materials at the same time, not only can the self-luminous road marking paint be prepared, but also the road marking paint can be directly washed with water under certain temperature conditions. The use of traditional water-insoluble materials to prepare road marking paint has problems such as being difficult to clean. Therefore, the present invention has important guiding significance for solving the problems that traditional road marking paint is difficult to remove and change.

Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and those skilled in the art can make various variations or modifications within the scope of the claims, which do not affect the essential content of the present invention.

Claims (8)

1. a flushable self-luminous road marking paint composition, is characterized in that, comprises the following components in parts by weight: Distilled water: 40~100 parts; PVA resin: 20~50 parts; Alumina: 10~20 parts; Hydrophobic agent: 3~10 parts; Rare earth luminescent material: 5~10 parts; Defoamer: 0.3~1 part; Leveling agent: 0.5~1.5 parts; UV absorber: 0.1~0.5 parts; Antibacterial agent: 0.3~0.6 parts; The degree of polymerization of the PVA resin is 1600-1800, and the degree of alcoholysis is 98-100%; the hydrophobic agent is a modified paraffin emulsion type hydrophobic agent. 2 . The flushable self-luminous road marking paint composition according to claim 1 , wherein the alumina is in the shape of flakes, the particle size is 0.5-1.5 μm, and the diameter-to-thickness ratio is 3-8. 3 . 3 . The flushable self-luminous road marking paint composition according to claim 1 , wherein the rare earth luminescent material is at least one of cerium oxide, europium oxide, and dysprosium oxide. 4 . 4 . The flushable self-luminous road marking coating composition according to claim 1 , wherein the defoamer is at least one of water-soluble organic silicon and organic fluorine. 5 . 5. The flushable self-luminous road marking coating composition according to claim 1, wherein the leveling agent is an alkyl-modified organosiloxane leveling agent and/or a polyether-modified organosiloxane Alkane leveling agent. 6. The flushable self-luminous road marking paint composition of claim 1, wherein the ultraviolet absorber is 2-hydroxy-4-n-octyloxybenzophenone and 2-(2'-hydroxyl One or both of -3',5'-di-tert-phenyl)-5-chlorobenzotriazole. 7 . The flushable self-luminous road sign paint composition according to claim 1 , wherein the antibacterial agent is one or both of a silver ion antibacterial agent and a quaternary ammonium salt antibacterial agent. 8 . 8. A preparation method of the flushable self-luminous road marking paint composition according to any one of claims 1 to 7, characterized in that, comprising the steps: Add distilled water to the reaction kettle, heat it to 90~100℃, start the stirrer and stir and add PVA resin. After the PVA resin is completely dissolved, add alumina, hydrophobic agent, rare earth luminescent material, defoamer, leveling agent, ultraviolet light in sequence. The absorbent and the antibacterial agent are evenly stirred for 1 to 2 hours and then left to stand, and the materials are discharged to obtain a washable self-luminous road sign paint composition.

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