Chalk writable anti-dazzle film

Abstract

The invention discloses a chalk writable anti-dazzle film. The chalk writable anti-dazzle film comprises a base material and an anti-dazzle coating arranged on the base material; the surface roughnessof the anti-dazzle coating is 0.9-2.5 [mu]m, the anti-dazzle coating is formed by coating the base material with an anti-dazzle coating liquid with the solid content of 40-65%, the anti-dazzle coating liquid contains first anti-dazzle particles, second anti-dazzle particles and third anti-dazzle particles, the particle size of the first anti-dazzle particles is 5-15 [mu]m, and the first anti-dazzle particles account for 50-80% of the total content of the anti-dazzle particles; the particle size of the third anti-dazzle particles is 0.5-3[mu]m, and the third anti-dazzle particles account for 10-25% of the total content of the anti-dazzle particles; and the particle size of the second anti-dazzle particles is 3-5 [mu]m. The chalk writable anti-dazzle film disclosed by the invention is goodin chalk writing effect, good in hardness and wear resistance and relatively good in flash point.

Description

technical field [0001] The invention relates to the technical field of anti-glare films, in particular to a chalk-writable anti-glare film. Background technique [0002] With the development of science and technology, more and more electronic products are used in modern teaching, and electronic teaching has become a trend of teaching. The traditional blackboard can only write with chalk, but the electronic blackboard can not only write with chalk, but also use water pen to write at the same time. It can also be used as a display screen to play videos, browse web pages, and perform touch interaction. At present, many schools have begun to introduce electronic blackboards for teaching, which not only adds to the fun of teaching, but also is more conducive to students' learning and mastering of knowledge. [0003] At present, most electronic blackboards use anti-glare (AG) glass as the cover, which not only makes the overall weight of the blackboard heavy, which is not conduci...

AI Technical Summary

Problems solved by technology

For some AG films, if the surface roughness is increased, the pencil lead will sink into the surface during the pencil hardness test, and the pencil will easily scratch the surface when it slides, resulting in a decrease in the measured surface hardness.

At the same time, the surface is rough, and more particles are exposed on the surface. During the wear test, the surface particles are more likely to fall off, so that the resin is exposed and easily scratched.

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