Anti-dazzle hard coating liquid, anti-dazzle hard coating film, preparation method of anti-dazzle hard coating film and polaroid
A technology of hard coating and hard coating, applied in coatings, optics, optical components, etc., can solve the problems of weak alkali resistance and reduced water contact angle of anti-glare hard coatings.
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[0052] Preparation of antiglare hard coating solution
[0053] Mix the components of the above anti-glare hard coating solution according to their proportions, and stir for 30 minutes to 60 minutes to obtain a uniformly dispersed anti-glare hard coating solution.
[0054] Preparation of anti-glare hard coating film
[0055] On one surface of the transparent polymer base film, the above-mentioned antiglare hard coating liquid is coated. Dry the coated anti-glare hard coating liquid first. Then, in an inert gas environment, UV curing is performed on the dried antiglare hard coating solution. In the anti-glare hard coating film, part of the first active monomer in the anti-glare hard coating has not undergone cross-linking reaction, which increases the alkali resistance of the anti-glare hard coating. At the same time, the UV curing reaction under the protection of inert gas can make the crosslinking effect of the coating better, which is beneficial to improve the scratch ...
Embodiment 1
[0156] Comparing Example 1 and Comparative Example 1, it can be seen that when the anti-glare hard coating film was prepared, it was not cured under nitrogen protection. Due to the relationship of oxygen inhibition on the surface of the coating, the crosslinking degree of UV curing was low, while UV curing In the resin system, the first active monomer provided by the application is not added (that is, the first active monomer containing alicyclic hydrocarbons containing N ring structures next to the acrylate group), when the anti-glare hard coating film is washed by alkali Finally, there are many uncured active functional groups on the surface of the coating, which are prone to hydrolysis reaction to form hydroxyl groups, which greatly reduces the water contact angle. Particles fall off, which reduces the haze of the film after alkaline washing.
Embodiment 2
[0157] The comparison of Example 2 and Comparative Example 2 shows that although Comparative Example 2 has added the first active monomer provided by the application (that is, the first active monomer comprising N alicyclic hydrocarbons next to the acrylate group) , so that the uncured reactive monomer in the anti-glare hard coating has an alicyclic molecular structure next to the acrylate group, so that the C-O bond in the ester group is not easy to break, and the first reactive monomer is not easy to be washed by alkali. The hydrolysis reaction produces hydroxyl groups, but because the coating is not cured under the protection of nitrogen and is affected by oxygen inhibition, the crosslinking degree of UV curing is lower than that of Example 2, and the scratch resistance is poor. At the same time, the haze after alkali washing also lowered.
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