阅读说明：本技术 一种绝缘粉末涂料 (Insulating powder coating ) 是由 费邦忠 周正华 查全达 费邦能 胡先海 王平 于 2021-09-18 设计创作，主要内容包括：本发明公开了一种绝缘粉末涂料,涉及粉末涂料技术领域；包括固体环氧树脂、固体有机硅树脂、硅微粉、硅酸钙、阻燃剂、促进剂、流平剂,所述阻燃剂由以下成分组成：磷酸；尿素；聚磷酸铵；膨润土；玻璃纤维；淀粉；氯化钾；三聚氰胺；多聚甲醛；乳液；双氰铵；季戊四醇；二氧化钛,所述流平剂由以下成分组成：陶土,碳酸钙,丁苯胶,焦磷酸四钠,含氟表面活性剂,所述绝缘粉末涂料还包括添加剂,所述添加剂为填料、颜料、消泡剂中的至少一种。本发明通过对成分的选用以及对各成分配比的调节,在保证了涂料本身的绝缘性能、耐腐蚀性能的基础上,以添加剂的形式增加了涂料的功能性,并且还通过附着剂的选取,大幅度提高了涂料的附着力。(The invention discloses an insulating powder coating, and relates to the technical field of powder coatings; the flame retardant comprises solid epoxy resin, solid organic silicon resin, silicon micropowder, calcium silicate, a flame retardant, an accelerator and a flatting agent, wherein the flame retardant comprises the following components: phosphoric acid; urea; ammonium polyphosphate; bentonite; glass fibers; starch; potassium chloride; melamine; paraformaldehyde; an emulsion; dicyandiamide; pentaerythritol; titanium dioxide, wherein the leveling agent consists of the following components: argil, calcium carbonate, styrene butadiene rubber, tetrasodium pyrophosphate, a fluorine-containing surfactant, and an additive, wherein the additive is at least one of a filler, a pigment and a defoaming agent. The invention increases the functionality of the coating in the form of additives on the basis of ensuring the insulating property and the corrosion resistance of the coating by selecting the components and adjusting the proportion of the components, and greatly improves the adhesive force of the coating by selecting the adhesive.)

1. The insulating powder coating is characterized by comprising the following components in parts by weight: 100 parts of solid epoxy resin, 10-100 parts of solid organic silicon resin, 20-30 parts of silicon micropowder, 5-10 parts of calcium silicate, 1-100 parts of flame retardant, 0.5-10 parts of accelerator and 0.5-10 parts of flatting agent.

2. The insulating powder coating according to claim 1, consisting of the following components in parts by weight: 100 parts of solid epoxy resin, 20-80 parts of solid organic silicon resin, 22-28 parts of silica powder, 7-8 parts of calcium silicate, 20-80 parts of flame retardant, 2-8 parts of accelerator and 2-8 parts of flatting agent.

3. The insulating powder coating according to claim 1, consisting of the following components in parts by weight: 100 parts of solid epoxy resin, 60 parts of solid organic silicon resin, 25 parts of silicon micropowder, 7.5 parts of calcium silicate, 60 parts of flame retardant, 6 parts of accelerator and 6 parts of flatting agent.

4. An insulating powder coating according to any one of claims 1 to 3, wherein the accelerator is a combination of a specific denatured resin and a silane coupling agent.

5. An insulating powder coating according to any one of claims 1-3, characterised in that the flame retardant consists of: 10-30 parts of phosphoric acid; 10-20 parts of urea; 5-10 parts of ammonium polyphosphate; 10-20 parts of bentonite; 5-10 parts of glass fiber; 10-20 parts of starch; 5-20% of potassium chloride; 1-2 parts of melamine; 10-20 parts of paraformaldehyde; 20-25 parts of emulsion; 20-25 parts of dicyandiamide; 15-20 parts of pentaerythritol; 5-10 parts of titanium dioxide.

6. An insulating powder coating according to any one of claims 1 to 3, wherein the levelling agent consists of: 50-60 parts of pottery clay, 10-20 parts of calcium carbonate, 15-20 parts of butadiene styrene rubber, 1-2 parts of tetrasodium pyrophosphate and 8-10 parts of a fluorine-containing surfactant.

7. The insulating powder coating according to any one of claims 1 to 3, further comprising an additive.

8. The insulating powder coating according to claim 7, wherein the additive is at least one of a filler, a pigment, and a defoamer.

9. The insulating powder coating according to any one of claims 1 to 3, further comprising an adhesive.

10. The insulating powder coating of claim 9, wherein the adhesive is any one of a hyperbranched modified polyester resin, a polyurethane dispersion liquid, and a polyurethane acrylic emulsion.

Technical Field

The invention relates to the technical field of powder coatings, in particular to an insulating powder coating.

Background

With the development of modern science and technology, the electronics and motor industry develops rapidly and develops towards high technology, high efficiency and the like, the working environment and working conditions also become more diversified, and particularly, the intelligent equipment replaces manual work gradually to perform work on single and reciprocating posts in response to the rapid development of the electrical industry.

With the manufacture of these automated and semi-automated devices, the number of internal electrical components is greatly increased compared to conventional mechanical devices, and the operation of electrical components, the insulating properties of which are important, especially for devices with denser electrical components, is an essential task for insulating the electrical components.

In the prior art, insulating paint is sprayed by a common method for insulating electrical elements, but the existing insulating powder paint has poor adhesive force, particularly when the paint is sprayed on irregular surfaces, the connection between a paint surface and the paint surface is fragile, and when the adhesive force between the paint surface and an original is poor, a paint film can fall off, so that the insulation is failed.

Therefore, the invention provides an insulating powder coating, aiming at solving the problem of poor adhesion of the coating in the prior art.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides an insulating powder coating.

In order to achieve the purpose, the invention adopts the following technical scheme:

an insulating powder coating comprises the following components in parts by weight: 100 parts of solid epoxy resin, 10-100 parts of solid organic silicon resin, 20-30 parts of silicon micropowder, 5-10 parts of calcium silicate, 1-100 parts of flame retardant, 0.5-10 parts of accelerator and 0.5-10 parts of flatting agent.

Preferably: the paint consists of the following components in percentage by weight: 100 parts of solid epoxy resin, 20-80 parts of solid organic silicon resin, 22-28 parts of silica powder, 7-8 parts of calcium silicate, 20-80 parts of flame retardant, 2-8 parts of accelerator and 2-8 parts of flatting agent.

Preferably: the paint consists of the following components in percentage by weight: 100 parts of solid epoxy resin, 60 parts of solid organic silicon resin, 25 parts of silicon micropowder, 7.5 parts of calcium silicate, 60 parts of flame retardant, 6 parts of accelerator and 6 parts of flatting agent.

Preferably: the accelerator is a combination of a special denatured resin and a silane coupling agent.

Preferably: the flame retardant consists of the following components: 10-30 parts of phosphoric acid; 10-20 parts of urea; 5-10 parts of ammonium polyphosphate; 10-20 parts of bentonite; 5-10 parts of glass fiber; 10-20 parts of starch; 5-20% of potassium chloride; 1-2 parts of melamine; 10-20 parts of paraformaldehyde; 20-25 parts of emulsion; 20-25 parts of dicyandiamide; 15-20 parts of pentaerythritol; 5-10 parts of titanium dioxide.

Preferably: the leveling agent consists of the following components: 50-60 parts of pottery clay, 10-20 parts of calcium carbonate, 15-20 parts of butadiene styrene rubber, 1-2 parts of tetrasodium pyrophosphate and 8-10 parts of a fluorine-containing surfactant.

Preferably: the insulating powder coating also includes an additive.

Preferably: the additive is at least one of filler, pigment and defoaming agent.

Preferably: the insulating powder coating further comprises an adhesive.

Preferably: the adhesive is any one of hyperbranched modified polyester resin, polyurethane dispersion liquid and polyurethane acrylic emulsion combined liquid.

The invention has the beneficial effects that:

1. the invention increases the functionality of the coating in the form of additives on the basis of ensuring the insulating property and the corrosion resistance of the coating by selecting the components and adjusting the proportion of the components, and greatly improves the adhesive force of the coating by selecting the adhesive.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Example (b):

an insulating powder coating comprises the following components in parts by weight: 100 parts of solid epoxy resin, 10-100 parts of solid organic silicon resin, 20-30 parts of silicon micropowder, 5-10 parts of calcium silicate, 1-100 parts of flame retardant, 0.5-10 parts of accelerator and 0.5-10 parts of flatting agent.

The accelerator is a combination of special modified resin and a silane coupling agent, and an LTH type accelerator produced by Kwangtze Kay company is adopted in the embodiment.

The flame retardant consists of the following components: 10-30 parts of phosphoric acid; 10-20 parts of urea; 5-10 parts of ammonium polyphosphate; 10-20 parts of bentonite; 5-10 parts of glass fiber; 10-20 parts of starch; 5-20% of potassium chloride; 1-2 parts of melamine; 10-20 parts of paraformaldehyde; 20-25 parts of emulsion; 20-25 parts of dicyandiamide; 15-20 parts of pentaerythritol; 5-10 parts of titanium dioxide.

The leveling agent consists of the following components: 50-60 parts of pottery clay, 10-20 parts of calcium carbonate, 15-20 parts of butadiene styrene rubber, 1-2 parts of tetrasodium pyrophosphate and 8-10 parts of a fluorine-containing surfactant.

Example 1:

an insulating powder coating comprises the following components in parts by weight: 100 parts of solid epoxy resin, 10 parts of solid organic silicon resin, 20 parts of silicon micropowder, 5 parts of calcium silicate, 1 part of flame retardant, 0.5 part of accelerator and 0.5 part of flatting agent.

The accelerator is a combination of special modified resin and a silane coupling agent, and an LTH type accelerator produced by Kwangtze Kay company is adopted in the embodiment.

The flame retardant consists of the following components: 10 parts of phosphoric acid; 10 parts of urea; 5, ammonium polyphosphate; 10 of bentonite; glass fibers 5; 10 of starch; 5 parts of potassium chloride; 1 part of melamine; 10 parts of paraformaldehyde; 20 parts of emulsion; 20 parts of dicyandiamide; 15 parts of pentaerythritol; 5 parts of titanium dioxide.

The leveling agent consists of the following components: 50 parts of argil, 10 parts of calcium carbonate, 15 parts of butadiene styrene rubber, 1 part of tetrasodium pyrophosphate and 8 parts of a fluorine-containing surfactant.

Example 2:

an insulating powder coating comprises the following components in parts by weight: 100 parts of solid epoxy resin, 100 parts of solid organic silicon resin, 30 parts of silicon micropowder, 10 parts of calcium silicate, 100 parts of flame retardant, 10 parts of accelerator and 10 parts of flatting agent.

The accelerator is a combination of special modified resin and a silane coupling agent, and an LTH type accelerator produced by Kwangtze Kay company is adopted in the embodiment.

The flame retardant consists of the following components: 10 parts of phosphoric acid; 10 parts of urea; 5, ammonium polyphosphate; 10 of bentonite; glass fibers 5; 10 of starch; 5 parts of potassium chloride; 1 part of melamine; 10 parts of paraformaldehyde; 20 parts of emulsion; 20 parts of dicyandiamide; 15 parts of pentaerythritol; 5 parts of titanium dioxide.

The leveling agent consists of the following components: 50 parts of argil, 10 parts of calcium carbonate, 15 parts of butadiene styrene rubber, 1 part of tetrasodium pyrophosphate and 8 parts of a fluorine-containing surfactant.

Example 3:

an insulating powder coating comprises the following components in parts by weight: 100 parts of solid epoxy resin, 60 parts of solid organic silicon resin, 25 parts of silicon micropowder, 7.5 parts of calcium silicate, 60 parts of flame retardant, 6 parts of accelerator and 6 parts of flatting agent.

The accelerator is a combination of special modified resin and a silane coupling agent, and an LTH type accelerator produced by Kwangtze Kay company is adopted in the embodiment.

The flame retardant consists of the following components: 10 parts of phosphoric acid; 10 parts of urea; 5, ammonium polyphosphate; 10 of bentonite; glass fibers 5; 10 of starch; 5 parts of potassium chloride; 1 part of melamine; 10 parts of paraformaldehyde; 20 parts of emulsion; 20 parts of dicyandiamide; 15 parts of pentaerythritol; 5 parts of titanium dioxide.

The leveling agent consists of the following components: 50 parts of argil, 10 parts of calcium carbonate, 15 parts of butadiene styrene rubber, 1 part of tetrasodium pyrophosphate and 8 parts of a fluorine-containing surfactant.

Example 4:

an insulating powder coating comprises the following components in parts by weight: 100 parts of solid epoxy resin, 80 parts of solid organic silicon resin, 27.5 parts of silicon micropowder, 8.5 parts of calcium silicate, 80 parts of flame retardant, 8 parts of accelerator and 8 parts of flatting agent.

The accelerator is a combination of special modified resin and a silane coupling agent, and an LTH type accelerator produced by Kwangtze Kay company is adopted in the embodiment.

The flame retardant consists of the following components: 10 parts of phosphoric acid; 10 parts of urea; 5, ammonium polyphosphate; 10 of bentonite; glass fibers 5; 10 of starch; 5 parts of potassium chloride; 1 part of melamine; 10 parts of paraformaldehyde; 20 parts of emulsion; 20 parts of dicyandiamide; 15 parts of pentaerythritol; 5 parts of titanium dioxide.

The leveling agent consists of the following components: 50 parts of argil, 10 parts of calcium carbonate, 15 parts of butadiene styrene rubber, 1 part of tetrasodium pyrophosphate and 8 parts of a fluorine-containing surfactant.

The following table shows that the coating in examples 1-4 is sprayed onto the outer wall of a steel pipe with the thickness of 0.1mm at normal temperature by using a spray gun, wherein the thickness of the steel pipe is 40mm x 3mm, and the specific properties are shown in the following table

Note: the corrosion resistance adopts a method of respectively putting three same steel pipes into a sodium chloride solution, a sulfuric acid solution and a strong sodium oxide solution with the concentration of 25%, and the time of obvious foaming and cracking on the surface is taken as a judgment standard; the adhesion performance adopts ISO-2409 standard test, the result is divided into six grades of 0-5, the adhesion strength is from good to weak, the insulating properties test adopts two movable electrodes, locate at the inside and outside of the steel tube separately, detect the current situation in the circuit.

As can be seen from the above table, when the components of the flame retardant, the accelerator and the leveling agent in the embodiments 1 to 4 are completely consistent, and only the mixture ratio of the raw materials is changed, the insulating properties of the coating in the embodiments 1 to 4 can all satisfy the effect of complete insulation, which proves that the insulating powder coating of the present invention has reliable insulating properties and general adhesive properties, and the corrosion resistance tends to increase and decrease as a whole, so that the optimal corrosion resistance is obtained in the embodiment 3, and the optimal mixture ratio in the embodiment 3 is obtained by considering the insulating properties, the corrosion resistance and the adhesive properties.

Example 5:

an insulating powder coating comprises the following components in parts by weight: 100 parts of solid epoxy resin, 60 parts of solid organic silicon resin, 25 parts of silicon micropowder, 7.5 parts of calcium silicate, 60 parts of flame retardant, 6 parts of accelerator and 6 parts of flatting agent.

The accelerator is a combination of special modified resin and a silane coupling agent, and an LTH type accelerator produced by Kwangtze Kay company is adopted in the embodiment.

The flame retardant consists of the following components: 10-30 parts of phosphoric acid; 10-20 parts of urea; 5-10 parts of ammonium polyphosphate; 10-20 parts of bentonite; 5-10 parts of glass fiber; 10-20 parts of starch; 5-20% of potassium chloride; 1-2 parts of melamine; 10-20 parts of paraformaldehyde; 20-25 parts of emulsion; 20-25 parts of dicyandiamide; 15-20 parts of pentaerythritol; 5-10 parts of titanium dioxide.

The leveling agent consists of the following components: 50-60 parts of pottery clay, 10-20 parts of calcium carbonate, 15-20 parts of butadiene styrene rubber, 1-2 parts of tetrasodium pyrophosphate and 8-10 parts of a fluorine-containing surfactant.

The insulating powder coating also comprises an additive, wherein the additive is at least one of a filler, a pigment and a defoaming agent.

In the comparative example, an additive is added on the basis of the example 3, and functional additives such as pigments, fillers, defoaming agents and the like can be added on the basis of the insulation property, the corrosion resistance and the adhesive force performance which are ensured by the original proportion, so that the requirements of different fields, different environments and different customers are met.

Example 6:

an insulating powder coating comprises the following components in parts by weight: 100 parts of solid epoxy resin, 60 parts of solid organic silicon resin, 25 parts of silicon micropowder, 7.5 parts of calcium silicate, 60 parts of flame retardant, 6 parts of accelerator and 6 parts of flatting agent.

The accelerator is a combination of special modified resin and a silane coupling agent, and an LTH type accelerator produced by Kwangtze Kay company is adopted in the embodiment.

The flame retardant consists of the following components: 10-30 parts of phosphoric acid; 10-20 parts of urea; 5-10 parts of ammonium polyphosphate; 10-20 parts of bentonite; 5-10 parts of glass fiber; 10-20 parts of starch; 5-20% of potassium chloride; 1-2 parts of melamine; 10-20 parts of paraformaldehyde; 20-25 parts of emulsion; 20-25 parts of dicyandiamide; 15-20 parts of pentaerythritol; 5-10 parts of titanium dioxide.

The leveling agent consists of the following components: 50-60 parts of pottery clay, 10-20 parts of calcium carbonate, 15-20 parts of butadiene styrene rubber, 1-2 parts of tetrasodium pyrophosphate and 8-10 parts of a fluorine-containing surfactant.

The insulating powder coating also comprises an additive, wherein the additive is at least one of a filler, a pigment and a defoaming agent.

The insulating powder coating also comprises an adhesive, wherein the adhesive is hyperbranched modified polyester resin.

Example 7:

an insulating powder coating comprises the following components in parts by weight: 100 parts of solid epoxy resin, 60 parts of solid organic silicon resin, 25 parts of silicon micropowder, 7.5 parts of calcium silicate, 60 parts of flame retardant, 6 parts of accelerator and 6 parts of flatting agent.

The accelerator is a combination of special modified resin and a silane coupling agent, and an LTH type accelerator produced by Kwangtze Kay company is adopted in the embodiment.

The flame retardant consists of the following components: 10-30 parts of phosphoric acid; 10-20 parts of urea; 5-10 parts of ammonium polyphosphate; 10-20 parts of bentonite; 5-10 parts of glass fiber; 10-20 parts of starch; 5-20% of potassium chloride; 1-2 parts of melamine; 10-20 parts of paraformaldehyde; 20-25 parts of emulsion; 20-25 parts of dicyandiamide; 15-20 parts of pentaerythritol; 5-10 parts of titanium dioxide.

The leveling agent consists of the following components: 50-60 parts of pottery clay, 10-20 parts of calcium carbonate, 15-20 parts of butadiene styrene rubber, 1-2 parts of tetrasodium pyrophosphate and 8-10 parts of a fluorine-containing surfactant.

The insulating powder coating also comprises an additive, wherein the additive is at least one of a filler, a pigment and a defoaming agent.

The insulating powder coating also comprises an adhesive, wherein the adhesive is a combined liquid of polyurethane dispersion liquid and polyurethane acrylic emulsion.

The following table shows the coating materials in examples 3 and 5-7, which are sprayed to the outer wall of a steel pipe with the thickness of 0.1mm at normal temperature by a spray gun, wherein the coating materials are sprayed to the outer wall of the steel pipe with the thickness of 40mm to 3mm by the spray gun, and the specific properties are shown in the following table

Note: the corrosion resistance adopts a method of respectively putting three same steel pipes into a sodium chloride solution, a sulfuric acid solution and a strong sodium oxide solution with the concentration of 25%, and the time of obvious foaming and cracking on the surface is taken as a judgment standard; the adhesion performance adopts ISO-2409 standard test, the result is divided into six grades of 0-5, the adhesion strength is from good to weak, the insulating properties test adopts two movable electrodes, locate at the inside and outside of the steel tube separately, detect the current situation in the circuit.

As can be seen from the above table, on the basis of the mixture ratio of the embodiment 3, the embodiment 5 is obtained by optimizing, and after the additive is added, the functionality of the coating is improved, and meanwhile, the original insulating property, corrosion resistance and adhesive force performance of the coating are not greatly influenced; it can be seen from examples 5-7 that, in examples 6 and 7, on the basis of example 5, an adhesive is added, so that the adhesive force is greatly improved under the condition that the insulating property and the corrosion resistance are almost different, and in comparison with examples 6 and 7, the selected adhesive is hyperbranched modified polyester resin, polyurethane dispersion liquid and polyurethane acrylic emulsion combined liquid, which are preferably selected from the polyurethane dispersion liquid and the polyurethane acrylic emulsion combined liquid, so that the adhesive force level reaches the highest level.

Therefore, it can be seen from the above that, the selection of the components and the ratio of the components in example 7 are the best solutions, which increases the functionality of the coating in the form of an additive on the basis of ensuring the insulation performance and the corrosion resistance of the coating itself, and also greatly improves the adhesion of the coating by selecting the adhesive.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.