Polaroid sheet, adhesive and preparation method thereof
A manufacturing method and adhesive technology, applied in the direction of polarizing elements, adhesive types, unsaturated alcohol copolymer adhesives, etc., can solve the problems of interface peeling, moisture and heat resistance, insufficient water resistance, etc., to improve the bonding force , Improve weather resistance and formula stability
Inactive Publication Date: 2010-06-16
莆田市奥奇偏振器件有限公司
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Problems solved by technology
[0005] However, the heat and humidity resistance and water resistance of polyvinyl alcohol-based adhesives are insufficient, and the interface between the polyvinyl alcohol-based material and the transparent protective film may peel off in a humidified environment
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[0055] In an embodiment of the adhesive for polarizers of the present invention, its formula includes the following material components in parts by weight:
[0056] Pure water 100
[0057] Polyvinyl alcohol 8.8
[0058] Maleic acid 0.1~0.4
[0059] Boric acid 0.1~0.5
[0060] Catalyst 0.02~0.15
[0061] Glyoxal 0.01~0.1.
[0062] Different from the fact that the polarizer sheet is easy to peel off due to poor weather resistance in the prior art adhesive for polarizers, the unsaturated functional group -OH in the PVA chain in the adhesive for polarizers of the present invention and maleic acid, boric acid, and ethylene Aldehydes, etc., react to produce unsaturated functional groups such as PVA-maleic acid groups, PVA-boronic acid groups, PVA-glyoxal groups, etc., which are entangled with each other to improve the binding force between molecules, thereby increasing the use The weather resistance of the polarizer prepared by the adhesive of the present invention; the adhesive fastness betw...
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Abstract
The invention discloses a polaroid sheet, adhesive and a preparation method thereof. The method comprises the following steps of: preparing the following materials in parts by weight: 100 parts of pure water, 8.8 parts of polyvinyl alcohol, 0.1-0.4 part of maleic acid, 0.1-0.5 part of boric acid, 0.02-0.15 part of catalyst and 0.01-0.1 part of glyoxal; adding 8.8 parts of the polyvinyl alcohol to 100 parts of the pure water in a stirring state; stirring and heating to 95-97 DEG C and then cooling to 40-50 DEG C to obtain glue A; respectively adding 0.1-0.4 part of the maleic acid, 0.1-0.5 part of the boric acid, 0.02-0.15 part of the catalyst and 0.01-0.1 part of the glyoxal into the glue A to obtain glue B; and filtering the glue B to obtain glue C. The adhesive has better weather resistance during pasting a polaroid sheet prepared from PVA and TAC.
Description
Technical field [0001] The present invention relates to a polarizer, an adhesive and a manufacturing method thereof. Background technique [0002] A liquid crystal display device is a device that visualizes the polarization state caused by the change in the arrangement of liquid crystal molecules. Generally, it is necessary to use a polarizer to cooperate with the change in the arrangement of the liquid crystal molecules to realize the passing and closing of light. [0003] The prior art polarizer usually has a laminated structure including a polyvinyl alcohol material and a protective film, and an adhesive is used to bond the polyvinyl alcohol material and the protective film on both sides of the polyvinyl alcohol material during production. In practice, triacetyl cellulose with high moisture permeability is generally used as a transparent protective film. The prior art polarizer is generally produced by stretching, so it is easy to shrink. In addition, since the polyvinyl alcoh...
Claims
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IPC IPC(8): C09J129/04G02B5/30
Inventor 张建新
Owner 莆田市奥奇偏振器件有限公司