CN-112662261-B - Self-cleaning road marking paint and preparation method thereof

Abstract

A self-cleaning road marking paint is prepared by mixing 50-150 parts by mass of modified acrylic resin, 0.1-2 parts by mass of accelerator, 1-10 parts by mass of inert oil and 10-50 parts by mass of low-boiling-point low-surface-tension solvent to form a component A, 50-150 parts by mass of modified acrylic resin, 1-10 parts by mass of curing agent, 1-10 parts by mass of inert oil and 10-50 parts by mass of low-boiling-point low-surface-tension solvent to form a component B, wherein the modified acrylic resin is a mixture obtained by using active monomer methyl methacrylate, butyl acrylate and hydroxypropyl methacrylate dissolved solid acrylic resin as a dispersion medium, adding inorganic filler and pigment nano titanium dioxide, and modifying the inorganic filler and nano titanium dioxide by using a silane coupling agent. The coating can realize the continuous and long-term self-cleaning effect of the road marking on the premise of not increasing the surface smoothness of the road marking.

Inventors

• XUE XIAODONG
• LI PENG
• GAO WEI
• NIU WENBIN
• WANG XIA
• CHENG XIAOFEI
• CUI XIAOKANG

Assignees

• 山西中涂交通科技股份有限公司
• 江苏长达交通材料有限公司

Dates

Publication Date

20260508

Application Date

20201231

Claims (4)

1. 1. A self-cleaning road marking paint is composed of 1 part by mass of a component A and 1-2 parts by mass of a component B which are independently packaged, wherein: the component A is formed by mixing 50-150 parts by mass of modified acrylic resin, 0.1-2 parts by mass of accelerator, 1-10 parts by mass of simethicone and 10-50 parts by mass of low-boiling-point low-surface-tension solvent; The component B is formed by mixing 50-150 parts by mass of modified acrylic resin, 1-10 parts by mass of curing agent, 1-10 parts by mass of dimethyl silicone oil and 10-50 parts by mass of low-boiling-point low-surface-tension solvent; The modified acrylic resin is a mixture obtained by modifying inorganic filler and nano titanium dioxide with a silane coupling agent by taking 50-70 parts by mass of methyl methacrylate, 20-30 parts by mass of butyl acrylate and 10-20 parts by mass of hydroxypropyl methacrylate as a dispersion medium, adding 100-200% by mass of inorganic filler and 10-30% by mass of pigment nano titanium dioxide into the dispersion medium, wherein the solid acrylic resin is a polymer obtained by copolymerization of at least one or more of methyl (meth) acrylate, butyl (meth) acrylate, hydroxypropyl (meth) acrylate or styrene, and the inorganic filler is an inorganic material containing hydroxyl functional groups; the accelerator is N, N '-dimethylaniline or N, N' -dimethyl-p-toluidine, and the curing agent is cyclohexanone peroxide, methyl ethyl ketone peroxide or benzoyl peroxide; The low-boiling point and low-surface tension solvent is at least one of normal hexane, methanol, ethanol and 3M TM 7100 fluoridation liquid.
2. 2. The self-cleaning road marking paint according to claim 1, characterized in that the inorganic filler is at least one of porous silica microspheres, silica micropowder, apatite micropowder, alumina micropowder, hollow glass microbeads.
3. 3. The self-cleaning road marking paint according to claim 1, characterized in that the silane coupling agent is an alkylsilane coupling agent containing a molecular segment of C n H 2n+1 (n≥10) in the molecular structure or a fluorosilane coupling agent containing a molecular segment of C n F 2n+1 (n≥3) in the molecular structure.
4. 4. A preparation method of the self-cleaning road marking paint comprises the steps of uniformly mixing 50-70 parts by mass of methyl methacrylate, 20-30 parts by mass of butyl acrylate and 10-20 parts by mass of hydroxypropyl methacrylate, adding 70-100 parts by mass of solid acrylic resin, uniformly dissolving to obtain a dispersion medium, adding 100-200% by mass of inorganic filler and 10-30% by mass of pigment nano titanium dioxide of the dispersion medium, uniformly dispersing, adding 1-10 parts by mass of silane coupling agent, heating to 60-80 ℃, stirring and refluxing for reacting for 1-2 hours to obtain modified acrylic resin; Adding 0.1-2 parts by mass of accelerator, 1-10 parts by mass of simethicone and 10-50 parts by mass of low-boiling-point and low-surface-tension solvent into 50-150 parts by mass of modified acrylic resin, stirring and mixing for 0.5-1 hour at 400-900 r/min, and sealing to obtain a component A of the self-cleaning road marking paint; And adding 1-10 parts by mass of curing agent, 1-10 parts by mass of simethicone and 10-50 parts by mass of low-boiling-point and low-surface-tension solvent into 50-150 parts by mass of modified acrylic resin, stirring and mixing for 0.5-1 hour at 400-900 r/min, and sealing to obtain the component B of the self-cleaning road marking paint.

Description

Self-cleaning road marking paint and preparation method thereof Technical Field The invention belongs to the technical field of paint, and relates to a road marking paint, in particular to a road marking paint with a self-cleaning function and a preparation method of the road marking paint. Background Road markings are an important component of road safety facilities. Because of the traffic guiding function, the observation effect of the road marking can influence the driving experience of a driver, thereby influencing the safety. If the road mark is dirty easily, the indication effect of the mark can be reduced sharply in a short time, and the guiding function is reduced, so that potential safety hazards are caused. To improve the problem of dirt-prone road markings, a common solution is to improve the dirt-resistant effect of the marking paint by improving the smoothness of the coating surface of the marking paint. However, the method still has two problems that on one hand, the improvement of the surface smoothness can reduce the surface anti-slip coefficient of the road mark, prolong the braking distance of an automobile or lead pedestrians to slip, increase the potential safety hazard, and on the other hand, the anti-fouling effect is related to the surface structure, and the abrasion and damage of the surface structure can lead the road mark to lose the anti-fouling effect and become the same easy to be fouled along with the increase of the service time of the road mark. Therefore, the marking paint provided by the invention has low surface smoothness and can continuously resist dirt, and the problems existing in the industry can be effectively solved. Disclosure of Invention The invention aims to provide a self-cleaning road marking paint and a preparation method thereof, so as to improve the anti-fouling capability of the road marking paint on the premise of not increasing the surface smoothness of the road marking. The self-cleaning road marking paint disclosed by the invention is composed of 1 part by mass of component A and 1-2 parts by mass of component B which are independently packaged. The component A is formed by mixing 50-150 parts by mass of modified acrylic resin, 0.1-2 parts by mass of accelerator, 1-10 parts by mass of inert oil and 10-50 parts by mass of low-boiling-point low-surface-tension solvent; The component B is formed by mixing 50-150 parts by mass of modified acrylic resin, 1-10 parts by mass of curing agent, 1-10 parts by mass of inert oil and 10-50 parts by mass of low-boiling-point low-surface-tension solvent; The modified acrylic resin is a mixture obtained by using active monomers of methyl methacrylate, butyl acrylate and hydroxypropyl methacrylate dissolved solid acrylic resin as a dispersion medium, adding inorganic filler and pigment nano titanium dioxide, and modifying the inorganic filler and the nano titanium dioxide by using a silane coupling agent. Further, the dispersion medium is composed of 50-70 parts by mass of methyl methacrylate, 20-30 parts by mass of butyl acrylate, 10-20 parts by mass of hydroxypropyl methacrylate and 70-100 parts by mass of solid acrylic resin. Further, the addition amount of the inorganic filler is 100-200% of the mass of the dispersion medium. Further, the addition amount of the pigment nano titanium dioxide is 10-30% of the mass of the dispersion medium. The invention is based on the acrylic resin as the core component for curing the road marking paint, and utilizes the characteristic of fluidity of the acrylic resin, takes the acrylic resin as a dispersion medium for modifying inorganic filler and nano titanium dioxide, disperses the inorganic filler and the nano titanium dioxide in the acrylic resin, and modifies the acrylic resin by using a silane coupling agent, thereby realizing the full dispersion of the inorganic filler and the nano titanium dioxide in the resin and avoiding the agglomeration phenomenon of the inorganic filler and the nano titanium dioxide. The inorganic filler, the nano titanium dioxide and the resin molecules are distributed in a more balanced state, so that more uniform nano hole structures can be formed in the subsequent curing process of the resin, and the hydrophobic effect of the road marking coating is improved. Furthermore, the invention also avoids the modification of the inorganic filler and the nano titanium dioxide independently, omits the drying link of the inorganic filler and the nano titanium dioxide, simplifies the operation steps and saves the time and the energy consumption. In the modified acrylic resin, the solid acrylic resin is a polymer obtained by copolymerization of at least one or more of methyl (methyl) acrylate, butyl (methyl) acrylate, hydroxypropyl (methyl) acrylate or styrene. The inorganic filler is an inorganic material containing hydroxyl functional groups, and comprises at least one of porous silica microspheres, silica micropowder, apatite micropowder, alumina micropowder