High-hardness grit powder coating and preparation method thereof

A powder coating, high hardness technology, applied in the direction of powder coating, anti-corrosion coating, polyester coating, etc., can solve the problems of high production cost, low scratch resistance and wear resistance, etc., and achieve easy cleaning, strong decoration and high hardness Effect

Inactive Publication Date: 2017-09-22
浙江绿能塑粉科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional sand grain powder coating has low scratch and abrasion resistance after film formation, and the current thermosetting sand grain powder coating usually makes the final coating film appear evenly distributed sand grain shape by adding sand grain agent, but the material The produc

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] The embodiment of the present invention also proposes a method for preparing a high-hardness sand grain powder coating, comprising the following steps:

[0027] S1. Weighing ingredients: Accurately weigh epoxy resin, carboxyl-terminated polyester resin, silicone resin, fluorocarbon resin, methylimidazole, nepheline powder, kaolin, pure polytetrafluoroethylene and pigments according to parts by weight.

[0028] S2. Pre-mixing: Put the weighed raw materials into a high-speed mixer and mix them.

[0029] S3. Melt extrusion: put the mixed and stirred raw materials into a screw extruder to melt and homogenize, and extrude and tablet into semi-finished products.

[0030] S4. Grinding: put the semi-finished product into a grinder and grind it into powder.

[0031] S5. Screening: the powdery semi-finished product is first separated from the ultrafine powder by the separator, and the ultrafine powder is discarded, and then sieved by the sieve according to the particle size requ...

Embodiment 1

[0034] A high-hardness sand grain powder coating, its raw materials include the following components by weight: 30 parts of epoxy resin; 30 parts of carboxyl-terminated polyester resin; 7.5 parts of silicone resin; 7.5 parts of fluorocarbon resin; 0.75 parts of methylimidazole 10 parts of nepheline powder; 7.5 parts of kaolin; 2 parts of pure polytetrafluoroethylene; 1.5 parts of pigment; prepare according to the following steps:

[0035] S1. Weighing ingredients: Accurately weigh epoxy resin, carboxyl-terminated polyester resin, silicone resin, fluorocarbon resin, methylimidazole, nepheline powder, kaolin, pure polytetrafluoroethylene and pigments according to parts by weight.

[0036] S2. Pre-mixing: Put the weighed raw materials into a high-speed mixer and mix them.

[0037] S3. Melt extrusion: put the mixed and stirred raw materials into a screw extruder to melt and homogenize, and extrude and tablet into semi-finished products.

[0038] S4. Grinding: put the semi-finishe...

Embodiment 2

[0042] A high-hardness sand grain powder coating, its raw materials include the following components in parts by weight: 25 parts of epoxy resin; 25 parts of carboxyl-terminated polyester resin; 5 parts of organic silicon resin; 5 parts of fluorocarbon resin; 5 parts; 5 parts of nepheline powder; 5 parts of kaolin; 1 part of pure polytetrafluoroethylene;

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Abstract

The invention discloses a high-hardness grit powder coating. The raw material of the high-hardness grit powder coating is prepared from the following components in parts by weight: 25-35 parts of epoxy resin, 25-35 parts of terminal carboxyl polyester resin, 5-10 parts of organosilicon resin, 5-10 parts of fluorocarbon resin, 0.5-1 part of methylimidazole, 5-15 parts of nepheline powder, 5-10 parts of kaolin, 1-3 parts of pure polytetrafluoroethylene and 1-2 parts of pigments. The invention also provides a preparation method of the high-hardness grit powder coating. The preparation method of the high-hardness grit powder coating comprises the steps of weighing and preparing materials, premixing, melting and extruding, grinding, screening and packing finished product to obtain the high-hardness grit powder coating. According to the high-hardness grit powder coating and the preparation method thereof, the crosslinking density of the resin during reacting, the hardness of the fillers and the smoothness of additives are increased, so that the hardness of the coating surface is improved; the production cost is reduced; meanwhile, the uniformly distributed grit shape is formed in the surface of the film cured by the coating; the coating is high in decorativeness; the defects such as roughness and unevenness of the surface and the like can be remedied and covered.

Description

【Technical field】 [0001] The invention relates to the technical field of powder coatings, in particular to a high-hardness sand grain powder coating and a preparation method thereof. 【Background technique】 [0002] Powder coating exists in the state of fine powder. It is a new type of solvent-free 100% solid powder coating. It is solvent-free, pollution-free, recyclable, environmentally friendly, saves energy and resources, reduces labor intensity and mechanical strength of the coating film. advanced features. The powder coating is sprayed on the surface of the coated object in powder form, melted and leveled by baking, and solidified to form a film. Due to the advantages of improving coating performance, reducing costs, and eliminating the generation of volatile organic compounds, powder coatings have been continuously and rapidly developed. [0003] Thermosetting sand texture powder coatings not only have many advantages of general thermosetting powder coatings, but also...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D167/00C09D5/03C09D5/16C09D5/08C09D7/12
CPCC09D163/00C08K2201/003C08K2201/011C08L2201/08C08L2205/025C08L2205/035C08L2312/00C09D5/031C09D5/032C09D5/033C09D5/08C09D5/1637C09D5/1687C09D167/00C08L63/00C08L67/00C08L83/04C08L27/12C08L27/18C08K3/34C08K3/346
Inventor 范若谷周光阳徐锦丽江红兵丁武轩周天明徐能峰张爱华杨建芬
Owner 浙江绿能塑粉科技股份有限公司
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