writing board

A writing board and writing film technology, applied in the field of writing boards, can solve the problems of affecting the overall performance of light-cured materials, affecting the polymerization reaction, large volume shrinkage affecting adhesion, etc., achieving fast curing rate, reducing viscosity and surface tension, printing high precision effect

Active Publication Date: 2021-02-02
UC NANO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a serious phenomenon of oxygen inhibition in the existing UV curing system. Oxygen inhibition refers to the phenomenon that free radicals are consumed due to the presence of oxygen in the free radical photopolymerization system, which affects the polymerization reaction.
When the photopolymerization system is cured in the air, the oxygen in the air will make the photo-cured surface not completely cured and sticky, which seriously affects the overall performance of the photo-cured material, especially the volume shrinkage after curing affects adhesion, hardness, etc. question

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1~4

[0039] Embodiments 1 to 4: a writing board, including a support board 4 and a writing film 5, the writing film 5 is attached to the surface of one side of the support board 4;

[0040] The writing film 5 further includes a base material 1 and a matte coating layer 2 coated on one surface of the base material 1, and the other surface of the base material 1 and the support plate 4 are bonded and connected by an adhesive layer 3 ;

[0041] The matt coating layer 2 is obtained by the coating material under ultraviolet light irradiation, and the coating material is composed of the following components by weight, as shown in Table 1:

[0042] Table 1

[0043] components Example 1 Example 2 Example 3 Example 4 Aliphatic polyurethane triacrylate 20 copies 24 copies 18 copies 27 copies 1,6 hexanediol diacrylate 40 copies 48 copies 36 copies 35 copies Ethylene glycol diglycidyl ether 11 copies 13 copies 12 copies 12 copies A...

Embodiment 1

[0050] Embodiment 1: the above substrate 1 is a polymethyl methacrylate (PMMA) layer; the above adhesive layer 3 is an acrylic polyester adhesive layer; the above support plate 4 is a glass layer.

Embodiment 2

[0051] Embodiment 2: the above-mentioned substrate 1 is a polycarbonate (PC) layer; the above-mentioned adhesive layer 3 is a silicone-based adhesive layer; the above-mentioned support plate 4 is a metal plate layer.

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Abstract

The invention discloses a writing board, which comprises a supporting board and a writing film, the writing film is attached to one side surface of the supporting board, and the writing film further comprises a base material and a matte coating coated on one surface of the base material Layer, the other surface of the substrate and the support plate are bonded and connected through an adhesive layer, and the matt coating layer is obtained by the coating material under ultraviolet light irradiation, and the coating material consists of the following components by weight Composition: Aliphatic polyurethane triacrylate, 1,6 hexanediol diacrylate, ethylene glycol diglycidyl ether, alkyl modified polysiloxane, 2‑methyl methacrylate, butyl hydroxycresyl, Organic thermosetting polymethylurea resin, 4‑acryloylmorpholine, sulfonyloxyketone, 2‑hydroxy‑2‑methyl‑1‑phenyl‑1‑acetone and colored pigments. The writing board of the present invention can not only write smoothly but also be scratch-resistant, and at the same time replace the process of etching the glass surface with strong acid, and is more environmentally friendly.

Description

technical field [0001] The invention relates to the field of teaching equipment, in particular to a writing board. Background technique [0002] At present, the preparation method of the blackboard on the market is to etch the tempered glass on the surface with strong acid, and then carry out black silk screen printing on the non-etching surface, and at the same time, stick a transparent explosion-proof film behind the silk screen layer. Chemical etching is highly polluting, and the degree of surface etching is not easy to control. If the etching is light, the writing effect will not be good, and if the etching is severe, the marks left after writing are not easy to clean; Multiple procedures such as pasting the explosion-proof film are costly and the process is cumbersome. [0003] UV curing technology refers to an inkjet technology in which monomers, oligomers or polymer substrates are cured under the induction of ultraviolet light. This technology has a wide range of app...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B43L1/00C09D175/14C09D183/04C09D175/02C09D7/63C08J7/046C08L67/02C08L69/00C08L33/12
CPCC09D7/63C09D175/14B43L1/10B43L1/00C09D7/65C08L2312/00C08L83/04C08K5/07C08K5/1345
Inventor 刘泽江
Owner UC NANO TECH CO LTD
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