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A kind of preparation method of hybrid pva film and polarizer

A hybrid, mixed dye technology, applied in optics, polarizing elements, optical elements, etc., can solve the problems of poor durability of iodine-based polarizers, unsuitable for high temperature and high humidity environment, etc., and achieve excellent polarization, good polarization and durability. High-temperature and high-humidity properties, the effect of improving the properties of high-temperature and high-humidity resistance

Active Publication Date: 2022-08-05
佛山纬达光电材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the deficiencies of the prior art above, the purpose of the present invention is to provide a method for preparing a hybrid PVA film and a polarizer, aiming at solving the problem that the prior art iodine-based polarizer has poor durability and is not suitable for use in a high-temperature and high-humidity environment. Defects

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  • A kind of preparation method of hybrid pva film and polarizer
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  • A kind of preparation method of hybrid pva film and polarizer

Examples

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Embodiment 1

[0033] A preparation method of a hybrid PVA film, the method comprises the steps:

[0034] Step S1. Washing: placing the PVA base film in a washing tank;

[0035] Step S2. Swelling: placing the cleaned PVA base film in a swelling tank containing 0.3% boric acid solution for swelling treatment;

[0036] Step S3. Dyeing: the swollen PVA base film is dipped in a dyeing tank containing a dyeing solution for dyeing treatment. The dyeing solution includes in mass percentage: dichroic mixed dye 1.92%, iodine 0.7%, potassium iodide 1.8% %, boric acid 0.1%;

[0037] Step S4. Stretching: After dyeing, the PVA film is first cleaned in the cleaning tank, and then enters the stretching tank for stretching. The stretching ratio is 4.6 times that of the PVA base film, and the stretching tank liquid is a 3% boric acid solution. The temperature of the extending bath is 52℃;

[0038] Step S5. Complementary color: the stretched PVA film is immersed in a color-compensating tank for color-compe...

Embodiment 2

[0042] A preparation method of a hybrid PVA film, the method comprises the steps:

[0043] Step S1. Washing: placing the PVA base film in a washing tank;

[0044] Step S2. swelling: placing the cleaned PVA base film in a swelling tank containing 0.5% boric acid solution for swelling treatment;

[0045] Step S3. Dyeing: the swollen PVA base film is dipped in a dyeing tank containing a dyeing solution for dyeing treatment. The dyeing solution includes, in terms of mass percentage: dichroic mixed dye 1.7%, iodine 0.85%, potassium iodide 1.65% %, boric acid 0.3%;

[0046] Step S4. Stretching: After dyeing, the PVA film is first cleaned in the cleaning tank, and then enters the stretching tank for stretching. The stretching ratio is 4.93 times that of the PVA base film, and the stretching tank liquid is a 2.8% boric acid solution. The temperature of the extending bath is 52℃;

[0047] Step S5. Complementary color: immerse the stretched PVA film in a color-compensating tank for c...

Embodiment 3

[0051] A preparation method of a hybrid PVA film, the method comprises the steps:

[0052] Step S1. Washing: placing the PVA base film in a washing tank;

[0053] Step S2. swelling: placing the cleaned PVA base film in a swelling tank containing 0.5% boric acid solution for swelling treatment;

[0054] Step S3. Dyeing: the swollen PVA base film is dipped in a dyeing tank containing a dyeing solution for dyeing treatment, and the dyeing solution includes in mass percentage: dichroic mixed dye 1.6%, iodine 0.9%, potassium iodide 1.75% %, boric acid 0.5%;

[0055] Step S4. Stretching: After dyeing, the PVA film is first cleaned in the cleaning tank, and then enters the stretching tank for stretching. The stretching ratio is 5.12 times that of the PVA base film, and the stretching tank liquid is a 3.1% boric acid solution. The temperature of the extending bath is 52℃;

[0056] Step S5. Complementary color: the stretched PVA film is immersed in a color-compensating tank for colo...

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Abstract

The present invention discloses a preparation method and polarizer of a hybrid PVA film.The base membrane is immersed in the dyeing tank containing the chromosomal solution for dyeing, which includes the dyeing solution, including iodine, potassium iodide, and hybrid dyes and boric acid.Formed; the polarizer includes a mixed PVA film.The preparation method and polarizer of the hybrid PVA film provided by the present invention, in the preparation method of the hybrid PVA film, by adjusting the composition and concentration ratio of the dyeing solution in the dyeing steps, the characteristics of improving the PVA membrane high temperature and high humidity, So that the prepared mixed polarizers have good polarizing and high -temperature resistance and high humidity characteristics, and have a wider range of use.

Description

technical field [0001] The invention relates to the technical field of polarizer preparation, in particular to a preparation method of a hybrid PVA film and a polarizer. Background technique [0002] Polarizer, referred to as polarizer for short, when natural light passes through the polarizer, the light whose vibration direction is perpendicular to the transmission axis of the polarizer will be absorbed, and only the polarized light whose vibration direction is parallel to the transmission axis of the polarizer remains. The polarization direction of a specific beam can be controlled. Polarizers are widely used in liquid crystal displays. The main function is to convert natural light without polarization into polarized light, and to control the penetration of light through the turning of the liquid crystal, thereby producing a display effect of light and dark on the panel. Twisting properties to control the degree of light passing through. [0003] In the prior art, iodine...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/30
CPCG02B5/3033
Inventor 廖剑能
Owner 佛山纬达光电材料股份有限公司