1. The high-molecular light-reflecting coating is characterized by consisting of modified graphene, epoxy resin, polydimethylsiloxane, titanium dioxide, dimethyl phenyl fluorosilicone resin, glass light-reflecting microspheres, polyethyl silicone resin, hexamethylcyclotrisiloxane, acrylic emulsion, plasticizer, leveling agent, defoaming agent, dispersing agent and water.

2. The light-reflecting paint according to claim 1, wherein the light-emitting paint comprises, by mass, 0.5-0.8 parts of modified graphene, 20-30 parts of epoxy resin, 3-5 parts of polydimethylsiloxane, 10-30 parts of titanium dioxide, 15-18 parts of xylene type fluorosilicone resin, 10-15 parts of glass light-reflecting microspheres, 7-15 parts of polyethyl silicone resin, 3-8 parts of acrylic emulsion, 0.2-0.5 part of plasticizer, 0.5-1.0 part of leveling agent, 0.1-0.5 part of defoaming agent, 0.5-1.0 part of dispersing agent, and 20-30 parts of water.

3. The light-reflecting paint according to claim 1, wherein the modified graphene is prepared by the following method: 1) mixing graphene, potassium permanganate and potassium persulfate, adding the mixture into concentrated sulfuric acid at the temperature of 80-90 ℃, adding a potassium hydroxide solution to neutral pH after full reaction, and drying; 2) adding ferrous sulfate solution for full reaction, filtering, washing and drying; 3) introducing F into the solid obtained in the step 2)₂、Cl₂And (3) fully reacting the mixed gas at 100-200 ℃ for 3-4 h to obtain the catalyst.

4. The reflective coating according to claim 3, wherein in the step 1) of preparing the modified graphene, the weight ratio of graphene: potassium permanganate: potassium persulfate = 5: 2: 1.

5. the reflective coating according to claim 3, wherein the modified graphene is prepared in step 1), the concentrated sulfuric acid concentration is 98%.

6. The reflective coating according to claim 3, wherein in the step 3) of preparing the modified graphene, F is₂、Cl₂The proportion of mixed gas is 1: 1.

7. the method for preparing the polymer light reflecting paint according to any one of claims 1 to 6, which comprises the following steps: 1) adding the modified graphene, titanium dioxide and a dispersing agent into water, and performing ultrasonic dispersion; 2) fully and uniformly mixing epoxy resin, polydimethylsiloxane, dimethyl phenyl fluorosilicone resin, polyethyl silicone resin, hexamethylcyclotrisiloxane, acrylic emulsion, a plasticizer, a flatting agent and a defoaming agent; 3) mixing the mixture obtained in the step 1) and the mixture obtained in the step 2), and adding the glass reflective beads.

8. The use of the polymeric light reflecting coating according to any one of claims 1 to 6 in the field of construction.

Background

The reflective coating is widely applied to various road traffic safety facilities such as traffic sign lines, raised road signs, contour marks, traffic cones, anti-collision barrels and the like, and the good reflective coating can reflect the traffic safety facilities to drivers and pedestrians under good conditions, so that accidents can be effectively reduced, and the driving efficiency can be improved. However, most of the existing reflective coatings have a reflective effect, but the thermal conductivity of the reflective coatings is not good enough, and when reflective materials are coated on buildings, signs or certain products, the heat dissipation effect of the reflective coatings is reduced, so that the related parts are accelerated to age, and therefore, the application of the reflective coatings has a certain limitation. Therefore, the invention discloses a reflective coating which not only has a reflective function, but also has a high heat dissipation coefficient, and has a very practical value. Has wider application space.

Disclosure of Invention

In order to solve the technical problems, the invention aims to invent a high-molecular light-reflecting coating.

In order to achieve the purpose, the technical scheme of the invention is as follows: the high-molecular light-reflecting coating is characterized by consisting of modified graphene, epoxy resin, polydimethylsiloxane, titanium dioxide, dimethyl phenyl fluorosilicone resin, glass light-reflecting microspheres, polyethyl silicone resin, hexamethylcyclotrisiloxane, acrylic emulsion, plasticizer, leveling agent, defoaming agent, dispersing agent and water.

Preferably, the luminescent coating comprises, by mass, 0.5-0.8 part of modified graphene, 20-30 parts of epoxy resin, 3-5 parts of polydimethylsiloxane, 10-30 parts of titanium dioxide, 15-18 parts of xylene type fluorosilicone resin, 10-15 parts of glass reflective microspheres, 7-15 parts of polyethyl silicone resin, 3-8 parts of acrylic emulsion, 0.2-0.5 part of plasticizer, 0.5-1.0 part of flatting agent, 0.1-0.5 part of defoaming agent, 0.5-1.0 part of dispersing agent and 20-30 parts of water.

Preferably, the modified graphene is prepared by the following method: 1) mixing graphene, potassium permanganate and potassium persulfate, adding the mixture into concentrated sulfuric acid at the temperature of 80-90 ℃, and adding a potassium hydroxide solution to neutral pH after full reaction; 2) adding ferrous sulfate solution for full reaction, filtering, washing and drying; 3) introducing F into the solid obtained in the step 2)₂、Cl₂And (3) fully reacting the mixed gas at 100-200 ℃ for 3-4 h to obtain the catalyst.

Preferably, in the step 1) of preparing the modified graphene, the mass ratio of graphene: potassium permanganate: potassium persulfate = 5: 2: 1.

preferably, in the step 1) of preparing the modified graphene, the concentrated sulfuric acid concentration is 98%.

Preferably, in the step 3) of preparing the modified graphene, F₂、Cl₂The proportion of mixed gas is 1: 1.

a preparation method of the high-molecular light-reflecting coating comprises the following steps: 1) adding the modified graphene, titanium dioxide and a dispersing agent into water, and performing ultrasonic dispersion; 2) fully and uniformly mixing epoxy resin, polydimethylsiloxane, dimethyl phenyl fluorosilicone resin, polyethyl silicone resin, hexamethylcyclotrisiloxane, acrylic emulsion, a plasticizer, a flatting agent and a defoaming agent; 3) mixing the mixture obtained in the step 1) and the mixture obtained in the step 2), and adding the glass reflective beads.

An application of the high-molecular light-reflecting coating in the field of buildings.

The invention has the beneficial effects that: the reflective coating has a good reflective function and a good heat dissipation effect.

Detailed Description

The following further illustrates embodiments of the invention:

the modified graphene was prepared according to the following method: 1) Mixing graphene, potassium permanganate and potassium persulfate according to the mass ratio of 5: 2: 1, mixing and adding the mixture into concentrated sulfuric acid with the concentration of 98% and the temperature of 80-90 ℃, wherein the mass ratio of the concentrated sulfuric acid to the graphene is 1: 50, after full reaction, adding a potassium hydroxide solution to adjust the pH value to be neutral, and drying; 2) adding ferrous sulfate solution for full reaction, filtering, washing and drying; 3) introducing F into the solid obtained in the step 2)₂、Cl₂Mixed gas of F₂、Cl₂Is 1: 1; and fully reacting for 3-4 hours at 100-200 ℃ to obtain the modified graphene for later use.

Example 1

Mixing 0.5 part of modified graphene, 0.5 part of dispersing agent, 10 parts of titanium dioxide and 20 parts of water according to parts by mass, and performing ultrasonic dispersion to obtain a dispersion liquid; fully mixing 20 parts of epoxy resin, 3 parts of polydimethylsiloxane, 15 parts of xylene type fluorosilicone resin, 7 parts of polyethyl silicone resin, 3 parts of acrylic emulsion, 0.2 part of plasticizer DOP, 0.5 part of flatting agent BYK-306 and 0.1 part of defoaming agent TEGO 825, and then adding dispersion liquid; and finally adding 10 parts of glass reflective micro-beads.

Example 2

Mixing 0.8 part of modified graphene, 1.0 part of dispersing agent, 30 parts of titanium dioxide and 30 parts of water in parts by mass, and performing ultrasonic dispersion to obtain a dispersion liquid; fully mixing 30 parts of epoxy resin, 5 parts of polydimethylsiloxane, 18 parts of xylene type fluorosilicone resin, 15 parts of polyethyl silicone resin, 8 parts of acrylic emulsion, 0.5 part of plasticizer DOP, 1.0 part of flatting agent BYK-306 and 0.5 part of defoaming agent TEGO 825, and then adding dispersion liquid; and finally adding 20 parts of glass reflective microspheres.

Example 3

Mixing 0.6 part of modified graphene, 0.8 part of dispersing agent, 25 parts of titanium dioxide and 30 parts of water in parts by mass, and performing ultrasonic dispersion to obtain a dispersion liquid; fully mixing 25 parts of epoxy resin, 5 parts of polydimethylsiloxane, 15 parts of xylene type fluorosilicone resin, 15 parts of polyethyl silicone resin, 8 parts of acrylic emulsion, 0.5 part of plasticizer DOP, 1.0 part of flatting agent BYK-306 and 0.1 part of defoaming agent TEGO 825, and then adding dispersion liquid; and finally adding 10 parts of glass reflective micro-beads.

Example 4

Mixing 1.8 parts of modified graphene, 0.8 part of dispersing agent, 20 parts of titanium dioxide and 25 parts of water in parts by mass, and performing ultrasonic dispersion to obtain a dispersion liquid; fully mixing 30 parts of epoxy resin, 5 parts of polydimethylsiloxane, 15-18 parts of xylene type fluorosilicone resin, 15 parts of polyethyl silicone resin, 3 parts of acrylic emulsion, 0.2 part of plasticizer DOP, 0.5 part of flatting agent BYK-306 and 0.1 part of defoaming agent TEGO 825, and then adding dispersion liquid; and finally adding 15 parts of glass reflective micro-beads.

Comparative example 1

Mixing 0.8 part of graphene, 1.0 part of dispersing agent, 30 parts of titanium dioxide and 30 parts of water in parts by mass, and performing ultrasonic dispersion to obtain a dispersion liquid; fully mixing 30 parts of epoxy resin, 5 parts of polydimethylsiloxane, 18 parts of xylene type fluorosilicone resin, 15 parts of polyethyl silicone resin, 8 parts of acrylic emulsion, 0.5 part of plasticizer DOP, 1.0 part of flatting agent BYK-306 and 0.5 part of defoaming agent TEGO 825, and then adding dispersion liquid; and finally adding 20 parts of glass reflective microspheres.

Comparative example 2

Mixing 1.0 part of dispersing agent, 30 parts of titanium dioxide and 30 parts of water in parts by mass, and performing ultrasonic dispersion to obtain a dispersion liquid; fully mixing 30 parts of epoxy resin, 5 parts of polydimethylsiloxane, 8 parts of acrylic emulsion, 0.5 part of plasticizer DOP, 1.0 part of flatting agent BYK-306 and 0.5 part of defoaming agent TEGO 825, and then adding dispersion liquid; and finally adding 20 parts of glass reflective microspheres.

Examples of the experiments

The samples of examples 1-4 and comparative example were tested, and the test results were as follows:

performance of	Comparative example 1	Comparative example 2	Example 1	Example 2	Example 3	Example 4
							Thermal conductivity (W/(mK))	342	305	425	404	412	378
Drying time (min)	12	12	10	13	11	12
							Coefficient of retroreflection/mcd2	208	202	217	215	220	208

While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.