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A kind of white board powder coating and preparation method thereof

A technology of powder coating and coating method, applied in the field of chemical materials, can solve the problems of short service life, leaving traces, dust pollution, etc., and achieve the effect of enhancing cleaning resistance, good leveling, and increasing aesthetics

Active Publication Date: 2018-08-24
ZHANGJIAGANG JIANGNAN POWDER COATING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional blackboard chalk teaching writing mode has serious dust pollution, but the emergence of whiteboards and whiteboard markers has solved this problem
However, the whiteboards currently on the market have a very short service life. Although the handwriting of the whiteboard markers can be erased, they will leave traces, and the whiteboard will lose its function after a long time. It is not easy to leave marks, and the coating will not be damaged when cleaning with solvent after spray paint or oil-based pen writing

Method used

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  • A kind of white board powder coating and preparation method thereof
  • A kind of white board powder coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The whiteboard powder coating provided by the invention is used to coat the surface of stainless steel, wherein the formula is: 60 parts of modified epoxy resin, 30 parts of acrylic monomer, 20 parts of alkyd resin, and 10 parts of titanium dioxide. The preparation method is as follows: Weigh each raw material according to the proportion, put it in the mixing tank, mix thoroughly, melt it at 80°C and enter it into a single-screw extruder for extrusion; the extruded material is tabletted, cooled, crushed, and sieved to select particles The powder with a diameter of 10-20 μm is coated on the treated substrate by high-voltage electrostatic method, the curing temperature is 160 ℃, the curing time is 15 minutes, and it is cured in a hot oven to make the finished product A.

Embodiment 2

[0020] The whiteboard powder coating provided by the invention is used to coat the plastic surface, wherein the formula is: 60 parts of modified epoxy resin, 40 parts of acrylic monomer, 30 parts of alkyd resin, and 20 parts of titanium dioxide. The preparation method is as follows: Weigh each raw material according to the proportion, put it in the mixing tank, mix thoroughly, melt it at 80°C and enter it into a single-screw extruder for extrusion; the extruded material is tabletted, cooled, crushed, and sieved to select particles The powder with a diameter of 10-20 μm is coated on the treated substrate by high-voltage electrostatic method, the curing temperature is 170 ° C, the curing time is 15 minutes, and it is cured in a hot oven to make the finished product B.

Embodiment 3

[0022] The whiteboard powder coating provided by the invention is used to coat the fiberboard surface, wherein the formula is: 80 parts of modified epoxy resin, 40 parts of acrylic monomer, 30 parts of alkyd resin, and 20 parts of titanium dioxide. The preparation method is as follows: Weigh each raw material according to the proportion, put it in the mixing tank, mix thoroughly, melt it at 100°C and enter it into a single-screw extruder for extrusion; the extruded material is tabletted, cooled, crushed, and sieved to select particles The powder with a diameter of 20-30 μm is coated on the treated substrate by the fluidized bed method, the curing temperature is 190 ° C, the curing time is 5 minutes, and the infrared curing oven is used for curing to make the finished product C.

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Abstract

The invention provides a white board powder coating and preparing method and coating method thereof. The formula comprises the following parts by weight: 60-80 parts of modified epoxy resin, 30-40 parts of acrylic monomer, 20-30 parts of alkyd resin, and 10-20 parts of titanium dioxide. The white board powder coating is prepared by the steps of: raw material weighing - feeding - premixing - blankng - melting and extrusion - pressing - crushing - grinding - screening and packaging - finished product. The processed base material is coated by the high-voltage electrostatic method or the fluidized bed method. The curing temperature is 160-190oC and the curing time is 5-15min. Curing can be achieved by using a hot baking oven or an infrared curing furnace.

Description

technical field [0001] The invention belongs to the field of chemical materials, and in particular relates to a powder coating for processing whiteboards and a preparation method thereof. Background technique [0002] The traditional blackboard chalk teaching writing mode has serious dust pollution, but the emergence of whiteboards and whiteboard markers has solved this problem. However, the whiteboards currently on the market have a very short service life. Although the handwriting of the whiteboard markers can be erased, they will leave traces, and the whiteboard will lose its function after a long time. It is not easy to leave marks, and the coating will not be damaged when cleaning with solvent after spray paint or oil-based pen writing. [0003] Based on the above reasons, whiteboard powder coating came into being. Powder coating is a recognized 4E type coating product with high production efficiency, excellent coating performance, eco-friendly and economical. Powder...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D167/08C09D5/03C09D7/61
CPCC09D5/033C09D163/00C08L67/08C08K2003/2241
Inventor 陈建清田晖华鹤林陈传东
Owner ZHANGJIAGANG JIANGNAN POWDER COATING
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