Water-based magnetic blackboard paint and preparation method thereof

A magnetic and blackboard technology, applied in the direction of magnetic coatings, coatings, etc., can solve the problems of inconvenient use and construction, hazards to health, and lack of adsorption of magnetic objects, etc., to achieve broadened functionality, good scrub resistance, and good hydrophobicity. Effect

Inactive Publication Date: 2018-09-07
GUANGZHOU MAGNET ELECTRICITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing blackboard coatings on the market are mostly used for writing with chalk, and the dust generated when writing with chalk will endanger people's health
Moreover, the existing blackboard paints on the market do not have the ability to absorb magnetic objects. If you n...

Method used

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  • Water-based magnetic blackboard paint and preparation method thereof
  • Water-based magnetic blackboard paint and preparation method thereof
  • Water-based magnetic blackboard paint and preparation method thereof

Examples

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preparation example Construction

[0036] A preparation method of water-based magnetic blackboard paint comprises the steps of uniformly mixing components.

[0037] Preferably, the preparation method is:

[0038]①Put water, dispersant, preservative, antifungal agent, soft magnetic powder, and filler into the sand mill, grind at a speed of 300-800 rpm for 10-60 minutes, and obtain a slurry dispersed by ball milling. After grinding and dispersing, the median particle size of the powder in the slurry is less than 30 μm;

[0039] ② After step ① is completed, transfer the slurry dispersed by the ball mill to the stirring disperser;

[0040] ③ After step ② is completed, add film-forming resin during the stirring and dispersing process; the stirring speed is 20-50 rpm, the dispersion speed is 200-500 rpm, and the stirring and dispersing time is 30-60 minutes;

[0041] ④ After step ③ is completed, add film-forming aids, defoamers, thickeners, and antifreeze during the stirring and dispersing process. The stirring spe...

Embodiment 1

[0044] A kind of water-based magnetic blackboard paint, its formula is as follows:

[0045] Table 1:

[0046]

[0047]

[0048] A preparation method of water-based magnetic blackboard paint, comprising steps:

[0049] ①Put 15 parts of water, 0.2 parts of dispersant, 0.1 part of anti-corrosion and anti-mold agent, 35 parts of soft magnetic powder, and 5 parts of filler in parts by weight into the sand mill, and grind for 10 minutes at a speed of 400 rpm Finally, the slurry after ball milling and dispersion is obtained, and the median particle size of the powder in the slurry after grinding and dispersion is less than 30 μm;

[0050] ② After step ① is completed, transfer the slurry dispersed by the ball mill to the stirring disperser;

[0051] ③ After step ② is completed, add 40 parts of film-forming resin in the process of stirring and dispersing. The stirring speed is 30 rpm, the dispersion speed is 200 rpm, and the stirring and dispersing time is 40 minutes.

[0052]...

Embodiment 2

[0060] A kind of water-based magnetic blackboard paint, its formula is as follows:

[0061] Table 2:

[0062] raw material

Dosage (unit: parts by mass)

water

15

Dispersant

0.2

Antiseptic and antifungal agent

0.1

Soft magnetic powder

32

filler

5

Film-forming resin

40

Coalescent

3

Defoamer

0.3

thickener

0.2

antifreeze

2

[0063] A preparation method of water-based magnetic blackboard paint, comprising steps:

[0064] ① Add 15 parts by weight of water, 0.2 parts of dispersant, 0.1 part of anti-corrosion and anti-mold agent, 32 parts of soft magnetic powder, and 5 parts of filler into the sand mill, and grind for 10 minutes at a speed of 400 rpm Finally, the slurry after ball milling and dispersion is obtained, and the median particle size of the powder in the slurry after grinding and dispersion is less than 30 μm;

[0065] ② After step ① is completed, transfer ...

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Abstract

The invention discloses water-based magnetic blackboard paint and a preparation method thereof. The water-based magnetic blackboard paint is prepared from the following raw materials in parts by mass:10 to 20 parts of water, 30 to 50 parts of film forming resin, 20 to 50 parts of soft magnetic powder, 4 to 8 parts of filler, 1 to 3 parts of coalescing agents, 0.1 to 0.3 part of dispersing agents,0 to 0.5 part of anti-foaming agents, 0 to 0.3 part of thickening agents, 0 to 0.06 part of preservatives, 0 to 0.06 part of mildew preventives and 0 to 2.5 parts of anti-freezing agents. The preparation method comprises the step of uniformly mixing all ingredients. The paint provided by the invention has good scraping resistance, good hydrophobic property and wiping and washing resistant performance; magnetic articles can be adsorbed; green and non-toxic effects are achieved; the process of the preparation method is simple; the industrial production is facilitated.

Description

technical field [0001] The invention relates to a water-based magnetic blackboard paint and a preparation method thereof. Background technique [0002] Blackboard paint is a functional paint with repeated erasing and writing properties. It is widely used in the fields of teaching and repeated erasing and decoration, and provides convenience for people's life and study. Existing blackboard paint on the market is mostly used in the writing of chalk, and the dust that produces when writing with chalk can endanger people's health. Moreover, the existing blackboard paints on the market do not have the ability to absorb magnetic objects. If you need to absorb magnetic objects on the surface of blackboard paint, you need to use blackboard paint with magnetic putty or magnetic primer to achieve both chalk writing and magnetic adsorption. Object requirements, which brings inconvenience to use and construction. [0003] In order to better meet people's needs, it is urgent to develop...

Claims

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Application Information

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IPC IPC(8): C09D133/04C09D127/12C09D5/23C09D7/65
CPCC08K2003/2275C08K2003/2296C08K2003/265C08K2201/01C09D5/23C09D127/12C09D143/04C09D7/65C08L91/06C08K3/22C08L27/18C08K3/26
Inventor 汪小明王锐周炳贤
Owner GUANGZHOU MAGNET ELECTRICITY
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