Formula, preparation method and preparation device of facade reflective coating

Abstract

The invention relates to the technical field of reflective coatings, in particular to a facade reflective coating formula, a preparation method and a preparation device.The facade reflective coating formula is prepared from 30-40 parts of epoxy resin, 15-20 parts of glass beads, 10-12 parts of ceramic beads, 6-8 parts of titanium dioxide, 1-2 parts of a polycarboxylate dispersing agent, 0.5-1 part of an organic silicon defoaming agent, 1-2 parts of a hydroxyethyl cellulose thickening agent and 1-2 parts of a silane coupling agent. The facade coating can firmly bond glass bead and ceramic bead reflective materials to form a compact paint film, the reflective characteristic is excellent, the boundary of an object can be clearly marked at night, and the visibility and safety of the object are greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of reflective coatings, and in particular to a formula, a preparation method and a preparation device for a facade reflective coating. Background Art

[0002] During use, traditional objects are easily affected by the external atmospheric environment, moisture, ultraviolet rays, and chemical pollutants, and their functions can only be identified by their shapes.

[0003] Existing facade paints can form a continuous protective film on the facade of an object, isolating the base material from the external atmospheric environment, moisture, ultraviolet rays, chemical pollutants, etc., thereby achieving the purpose of protecting the surface of the object. At the same time, by using traditional facade paints of different colors, different functional areas can be clearly divided, which plays a role in protecting and identifying the object.

[0004] However, existing facade coatings have basically no reflective properties, making it impossible to clearly mark the boundaries of objects at night, thereby reducing the visibility and safety of the objects. Summary of the invention

[0005] The purpose of the present invention is to provide a formula, preparation method and preparation device for facade reflective coating, aiming to solve the problem that existing facade coatings basically have no reflective properties, making it impossible to clearly mark the boundaries of objects at night, thereby reducing the visibility and safety of objects.

[0006] To achieve the above-mentioned purpose, the present invention provides a facade reflective coating formula, which is composed of the following components in proportion: epoxy resin: 30-40 parts, glass microspheres: 15-20 parts, ceramic microspheres: 10-12 parts, titanium dioxide: 6-8 parts, polycarboxylate dispersant: 1-2 parts, silicone defoamer: 0.5-1 part, hydroxyethyl cellulose thickener: 1-2 parts, silane coupling agent: 1-2 parts, and deionized water: 20-30 parts.

[0007] Among them, the components are preferably: epoxy resin: 35 parts, glass microspheres: 18 parts, ceramic microspheres: 11 parts, titanium dioxide: 6 parts, polycarboxylate dispersant: 1 part, silicone defoamer: 0.5 parts, hydroxyethyl cellulose thickener: 1 part, silane coupling agent: 1 part, deionized water: 25 parts.

[0008] Wherein, the particle size of the glass microbeads is 30-60 meshes.

[0009] Wherein, the particle size of the ceramic microbeads is 30-50 μm.

[0010] The purity of the polycarboxylate dispersant is above 85%, the purity of the silicone defoamer is above 97%, the purity of the hydroxyethyl cellulose thickener is above 95%, and the purity of the silane coupling agent is above 95%.

[0011] A method for preparing a facade reflective coating comprises the following steps:

[0012] Add deionized water to the dispersion tank, slowly add hydroxyethyl cellulose thickener under low-speed stirring, and stir until it is completely dissolved;

[0013] Add polycarboxylate dispersant and silicone defoamer in sequence and stir them evenly, then slowly add titanium dioxide while increasing the stirring speed;

[0014] Slowly add glass beads and reflective powder while reducing the stirring speed;

[0015] Add acrylic emulsion, and after the emulsion is completely added, stir to mix evenly;

[0016] The finished product of the facade reflective coating can be obtained by adding a silane coupling agent and filtering to remove the existing large particle impurities.

[0017] A device for preparing a facade reflective coating, applicable to the method for preparing a facade reflective coating as claimed in claim 6, comprising a storage module, a weighing module, a mixing module and a de-impurity module, wherein the weighing module is connected to the storage module, the mixing module is connected to the storage module, and the de-impurity module is connected to the storage module.

[0018] The storage module is used to store various raw materials;

[0019] The weighing module is used to accurately weigh and pre-process various raw materials involved in the formula before processing;

[0020] The mixing module is used to fully mix and disperse the raw materials in the storage module in a certain order to form a uniform coating system;

[0021] The impurity removal module is used to remove large particle impurities and inadequately dispersed agglomerates that may be generated during the preparation of the coating in the storage module, thereby improving the purity of the coating.

[0022] The facade reflective paint formula, preparation method and preparation device of the present invention enable the facade paint to firmly bond glass microbeads and ceramic microbead reflective materials to form a dense paint film with excellent reflective properties, so that the boundaries of objects can be clearly marked at night, greatly improving the visibility and safety of objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0024] Figure 1 It is a flow chart of the steps of the method for preparing the facade reflective coating according to the second embodiment of the present invention.

[0025] Figure 2 It is a schematic structural diagram of a device for preparing a facade reflective coating according to a third embodiment of the present invention.

[0026] In the figure: 201 - storage module, 202 - weighing module, 203 - mixing module, 204 - impurity removal module. DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0028] The first embodiment of the present application is:

[0029] The invention provides a formula of a facade reflective coating, which is composed of the following components in proportion: 30-40 parts of epoxy resin, 15-20 parts of glass microspheres, 10-12 parts of ceramic microspheres, 6-8 parts of titanium dioxide, 1-2 parts of a polycarboxylate dispersant, 0.5-1 part of an organosilicon defoamer, 1-2 parts of a hydroxyethyl cellulose thickener, 1-2 parts of a silane coupling agent, and 20-30 parts of deionized water.

[0030] Among them, the components are preferably: epoxy resin: 35 parts, glass microspheres: 18 parts, ceramic microspheres: 11 parts, titanium dioxide: 6 parts, polycarboxylate dispersant: 1 part, silicone defoamer: 0.5 parts, hydroxyethyl cellulose thickener: 1 part, silane coupling agent: 1 part, deionized water: 25 parts.

[0031] Secondly, the particle size of the glass microbeads is 30-60 meshes.

[0032] Meanwhile, the particle size of the ceramic microbeads is 30-50 μm.

[0033] Finally, the purity of the polycarboxylate dispersant is above 85%, the purity of the organosilicon defoamer is above 97%, the purity of the hydroxyethyl cellulose thickener is above 95%, and the purity of the silane coupling agent is above 95%.

[0034] A facade reflective coating formula of the present invention is used. The epoxy resin molecule is a high molecular polymer containing active epoxy groups in the molecule, which can undergo cross-linking reaction with a variety of curing agents to form a hard and stable cured product with a three-dimensional network structure. The glass microbeads are tiny spherical glass particles with the characteristics of high roundness and good fluidity, which can refract and reflect light to produce a reflective effect. Ceramic microbeads are materials that can enhance the reflective effect. They are generally tiny beads made of ceramic as raw materials, have the advantages of high hardness, good chemical stability, high temperature resistance, etc., and have long-lasting reflective performance. When used in combination with the glass microbeads in the coating, the uniformity and intensity of the reflection can be further improved, and good reflection can be achieved from multiple angles and directions, so that the facade has reliable reflective performance under different lighting conditions. The main chemical component of the titanium dioxide is titanium dioxide, and its chemical formula is TiO 2 , is a widely used white pigment. The polycarboxylate dispersant belongs to a kind of high molecular polymer auxiliary agent, and its molecular structure contains multiple functional groups such as carboxyl groups. It can be adsorbed on the surface of solid particles, and through electrostatic repulsion and steric hindrance effects, it prevents these particles from aggregating and agglomerating with each other, and promotes them to be evenly dispersed in the resin system of the coating, ensuring that the composition of the coating is uniform and stable, thereby ensuring that the reflective effect, appearance quality and construction performance of the coating are not affected by particle agglomeration. The organosilicon defoamer is a product made of polysiloxane as the main active ingredient and compounded with other auxiliary agents. It uses the characteristic of silicone oil having very low surface tension. When the defoamer contacts the foam generated in the coating, it can quickly spread on the foam surface, reduce the surface tension of the foam film, make the foam film thinner and rupture, thereby eliminating the bubbles generated during the preparation, stirring and construction of the coating, and ensuring the smooth surface of the coating. The whole surface is smooth to avoid the influence of bubbles on the reflective performance and bonding effect of the coating. The hydroxyethyl cellulose thickener is a water-soluble cellulose ether compound, which can swell in water and form a solution with a certain viscosity. The molecular structure of the silane coupling agent contains inorganic functional groups that can chemically react with the surfaces of the glass beads and the ceramic beads, and organic functional groups that can interact with the epoxy resin, to ensure the firm adhesion of the coating on the facade and the long-term use effect, so that the facade coating can firmly bond the glass beads and ceramic beads reflective materials to form a dense paint film with excellent reflective properties, so that the boundaries of objects can be clearly marked at night, greatly improving the visibility and safety of objects.

[0035] The second embodiment of the present application is:

[0036] Based on the first embodiment, please refer to Figure 1 , Figure 1 It is a flow chart of the steps of the method for preparing the facade reflective coating according to the second embodiment of the present invention.

[0037] The present invention provides a method for preparing a facade reflective coating, comprising the following steps:

[0038] S101: Add deionized water to the dispersion tank, slowly add hydroxyethyl cellulose thickener under low speed stirring, and stir until it is completely dissolved;

[0039] S102: adding a polycarboxylate dispersant and a silicone defoamer in sequence and stirring them evenly, then slowly adding titanium dioxide while increasing the stirring speed;

[0040] S103: Slowly add glass beads and reflective powder while reducing the stirring speed;

[0041] S104: Add acrylic emulsion, and after the emulsion is completely added, stir to mix evenly;

[0042] S105: Add silane coupling agent and filter to remove the existing large particle impurities to obtain the finished product of the facade reflective coating.

[0043] A method for preparing a facade reflective coating according to the present invention is used to add deionized water to a dispersion tank, slowly add a thickener under low-speed stirring (300-500 rpm), stir until it is completely dissolved and uniform, so that the system has a certain initial viscosity, then add a dispersant and a defoamer in sequence, stir evenly, then slowly add titanium dioxide, increase the stirring speed to 800-1000 rpm, stir and disperse for 20-30 minutes to ensure that the pigment is fully dispersed and uniform, then slowly add glass beads and reflective powder, and adjust the stirring speed to 500-600 rpm Add the acrylic emulsion gradually under low-speed stirring (300-500 rpm). After the emulsion is completely added, stir for 10-15 minutes to mix it evenly. Finally, add the coupling agent and continue stirring for 10-15 minutes to mix the entire coating system evenly. After filtering (a 100-150 mesh filter can be used) to remove possible large particles of impurities, the finished facade reflective coating can be obtained.

[0044] The third embodiment of the present application is:

[0045] Based on the second embodiment, please refer to Figure 2 , Figure 2 It is a schematic structural diagram of a device for preparing a facade reflective coating according to a third embodiment of the present invention.

[0046] The present invention provides a device for preparing a facade reflective coating, comprising a storage module 201, a weighing module 202, a mixing module 203 and a de-impurity module 204, wherein the weighing module 202 is connected to the storage module 201, the mixing module 203 is connected to the storage module 201, and the de-impurity module 204 is connected to the storage module 201.

[0047] The storage module 201 is used to store various raw materials;

[0048] The weighing module 202 is used to accurately weigh and pre-process various raw materials involved in the formula before processing;

[0049] The mixing module 203 is used to fully mix and disperse the raw materials in the storage module 201 in a certain order to form a uniform coating system;

[0050] The impurity removal module 204 is used to remove large particle impurities and inadequately dispersed agglomerates that may be generated during the preparation of the coating in the storage module 201, thereby improving the purity of the coating.

[0051] The storage module 201 can enable various raw materials to be put into the storage module 201 for preparation and processing. The storage module 201 container can hold various raw materials. The weighing module 202 can be an electronic balance and a liquid metering container or a liquid metering pump, which is responsible for accurately weighing and pre-treating various raw materials involved in the formula to ensure that the raw materials put into the formulation meet the requirements and the dosage is accurate. The mixing module 203 is a disperser and a stirrer. Through different stirring equipment and corresponding stirring procedures, the raw materials are fully mixed and dispersed in a certain order to form a uniform coating system. The impurity removal module 204 can remove large particle impurities and inadequately dispersed agglomerates that may be generated in the preparation process of the coating, thereby improving the purity of the coating and ensuring that the coating surface formed after the coating is applied is smooth, the reflective effect is uniform, and the adhesion is firm.

[0052] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A facade reflective coating formula, characterized in that: The invention is composed of the following components in proportion: epoxy resin: 30-40 parts, glass microspheres: 15-20 parts, ceramic microspheres: 10-12 parts, titanium dioxide: 6-8 parts, polycarboxylate dispersant: 1-2 parts, silicone defoamer: 0.5-1 part, hydroxyethyl cellulose thickener: 1-2 parts, silane coupling agent: 1-2 parts and deionized water: 20-30 parts.

2. The facade reflective coating formulation according to claim 1, characterized in that: The components are: epoxy resin: 35 parts, glass microspheres: 18 parts, ceramic microspheres: 11 parts, titanium dioxide: 6 parts, polycarboxylate dispersant: 1 part, silicone defoamer: 0.5 parts, hydroxyethyl cellulose thickener: 1 part, silane coupling agent: 1 part, and deionized water: 25 parts.

3. The facade reflective coating formulation according to claim 2, characterized in that: The particle size of the glass microbeads is 30-60 meshes.

4. The facade reflective coating formulation according to claim 2, characterized in that: The particle size of the ceramic microbeads is 30-50 μm.

5. The facade reflective coating formulation according to claim 2, characterized in that: The purity of the polycarboxylate dispersant is above 85%, the purity of the organosilicon defoamer is above 97%, the purity of the hydroxyethyl cellulose thickener is above 95%, and the purity of the silane coupling agent is above 95%.

6. A method for preparing a facade reflective coating, applicable to the facade reflective coating formulation according to any one of claims 1 to 5, characterized in that: The following steps are involved: Add deionized water to the dispersion tank, slowly add hydroxyethyl cellulose thickener under low-speed stirring, and stir until it is completely dissolved; Add polycarboxylate dispersant and silicone defoamer in sequence and stir them evenly, then slowly add titanium dioxide while increasing the stirring speed; Slowly add glass beads and reflective powder while reducing the stirring speed; Add acrylic emulsion, and after the emulsion is completely added, stir to mix evenly; The finished product of the facade reflective coating can be obtained by adding a silane coupling agent and filtering to remove the existing large particle impurities.

7. A device for preparing a facade reflective coating, applicable to the method for preparing a facade reflective coating as claimed in claim 6, characterized in that: It includes a storage module, a weighing module, a mixing module and a de-impurity module, wherein the weighing module is connected to the storage module, the mixing module is connected to the storage module, and the de-impurity module is connected to the storage module. The storage module is used to store various raw materials; The weighing module is used to accurately weigh and pre-process various raw materials involved in the formula before processing; The mixing module is used to fully mix and disperse the raw materials in the storage module in a certain order to form a uniform coating system; The impurity removal module is used to remove large particle impurities and inadequately dispersed agglomerates that may be generated during the preparation of the coating in the storage module, thereby improving the purity of the coating.

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