Baking varnish writing board and preparation method thereof

A technology of writing board and baking varnish, which is applied in the field of teaching equipment, can solve the problems of teachers and students' physical and mental health threats, short life span, and excessive dust, and achieve the effects of reducing eye damage, high hardness, and low gloss

Active Publication Date: 2015-11-25
SHIJIAZHUANG KEDA STATIONERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Baking varnish writing board and preparation method thereof
  • Baking varnish writing board and preparation method thereof
  • Baking varnish writing board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A paint writing board, see figure 1 As shown, a substrate 2 is included, and the upper surface of the substrate 2 is sequentially provided with a passivation layer 3 , a baking varnish layer 4 and an anti-seepage layer 5 .

[0055] The anti-seepage layer 5 is made of acrylic resin. The material of baking varnish layer 4 is baking varnish, and baking varnish is made up of the raw material of following mass percentage: Acrylic resin 30%, dispersant 1%, colored pigment 2%, anti-sedimentation agent 8%, water 22%, urea-melamine-formaldehyde resin 13% %, catalyst 1%, wear-resistant filler 16%, matting agent 2%, additive 5%, made by mixing, grinding and filtering. Wherein, the dispersant is PAA-402 dispersant; the anti-settling agent is FP-88 anti-settling agent; the coloring pigment is dark green coloring pigment; the matting agent is white carbon black; the wear-resistant filler is a mixture of ceramic powder and graphite powder, wherein The mass ratio of ceramic powder an...

Embodiment 2

[0065] A paint writing board, see figure 2 As shown, a substrate 2 is included, and the upper surface of the substrate 2 is sequentially provided with a passivation layer 3 , a baking varnish layer 4 , an anti-seepage layer 5 and a coating layer 6 .

[0066] The anti-seepage layer 5 is made of acrylic resin. The material of baking varnish layer 4 is baking varnish, and baking varnish is made up of the raw material of following mass percent: Acrylic resin 34%, dispersant 0.5%, colored pigment 1.5%, anti-settling agent 8%, water 24%, urea-melamine-formaldehyde resin 10% %, catalyst 1%, wear-resistant filler 14%, matting agent 2%, additive 5%, made by mixing, grinding and filtering. Wherein, the dispersant is PAA-402 dispersant; the anti-settling agent is FP-88 anti-settling agent; the coloring pigment is dark green coloring pigment; the matting agent is white carbon black; the wear-resistant filler is a mixture of ceramic powder and graphite powder, wherein The mass ratio of ...

Embodiment 3

[0077] A paint writing board, see image 3 As shown, it includes a substrate 2, the upper surface of the substrate 2 is provided with a passivation layer 3, a baking varnish layer 4 and an anti-seepage layer 5 in sequence; the backside of the substrate 2 is provided with a back paint layer 1.

[0078] The anti-seepage layer 5 is made of acrylic resin. The material of baking varnish layer 4 is baking varnish, and baking varnish is made up of the raw material of following mass percentage: Acrylic resin 35%, dispersant 0.5%, colored pigment 1.5%, anti-settling agent 10%, water 22%, urea-melamine-formaldehyde resin 10% %, catalyst 1.5%, wear-resistant filler 11%, matting agent 2.5%, additive 6%, made by mixing, grinding and filtering. Wherein, the dispersant is PAA-402 dispersant; the anti-settling agent is FP-88 anti-settling agent; the coloring pigment is dark green coloring pigment; the matting agent is white carbon black; the wear-resistant filler is a mixture of ceramic powd...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B43L1/00C09D133/00C09D161/28C09D7/12
Inventor 何玉良
Owner SHIJIAZHUANG KEDA STATIONERY
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