Baking varnish writing board and preparation method thereof

Abstract

The invention discloses a stoving varnish writing board and a preparing method for the stoving varnish writing board, and relates to the technical field of teaching tools. The stoving varnish writing board comprises a substrate, the upper surface of the substrate is sequentially provided with a passivation layer and a stoving varnish layer, the upper surface of the stoving varnish layer is provided with an impervious layer, the stoving varnish layer is made of stoving varnish, and the stoving varnish is formed by mixing, grinding and filtering, by mass, 30-40% of acrylic resin, 0.5-1% of dispersing agents, 1.5-3% of coloring pigments, 8-15% of anti-settling agents, 20-32% of water, 10-15% of urea, melamine and formaldehyde resin, 1-2% of catalysts, 10-18% of wear-resistant filler, 2-5% of flatting agents and 5-10% of auxiliaries. The stoving varnish writing board has the advantages that hardness is high, glossiness is low, the surface of the stoving varnish writing board is uniform, coarseness is moderate and character strokes can be prevented from permeating the writing board, chalk and fountain pens can be used for writing, vision of teachers and students can be effectively protected, the service life of the writing board is prolonged, the preparation process is good and environment protection is achieved.

Description

technical field [0001] The invention relates to the technical field of teaching aids. Background technique [0002] More than 90% of the teachers in the school are still using writing boards. The writing boards have evolved from cement writing boards, wooden writing boards, frosted glass writing boards, and metal writing boards. Now the metal writing boards on the market generally have quality problems, including production Rust, paint peeling, color change, dusty, reflective, short life, etc.; some need to be replaced after one year of use; and the use of low-quality writing boards will pose a threat to the physical and mental health of teachers and students. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a baking varnish writing board and its preparation method. The baking varnish board has the characteristics of high hardness, low gloss, uniform surface, moderate roughness, easy preparation, and prevention of...

AI Technical Summary

Problems solved by technology

[0002] More than 90% of the teachers in the school are still using writing boards. The writing boards have evolved from cement writing boards, wooden writing boards, frosted glass writing boards, and metal writing boards. Now the metal writing boards on the market generally have quality problems, including production Rust, peeling paint, color change, dusty, reflective, short life, etc.; some need to be replaced after one year of use; and the use of low-quality writing boards will pose a threat to the physical and mental health of teachers and students

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