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Porous material, preparation method thereof and film moisture permeability detection device

A technology of porous materials and composite materials, applied in the display field, can solve the problems of agglomeration of desiccant or water-absorbing agent, and can not be reused, and achieve the effect of reducing detection cost and ensuring accuracy

Pending Publication Date: 2021-10-08
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the desiccant or water-absorbing agent used in the existing frame glue moisture permeability detection device is seriously agglomerated and cannot be reused

Method used

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  • Porous material, preparation method thereof and film moisture permeability detection device
  • Porous material, preparation method thereof and film moisture permeability detection device
  • Porous material, preparation method thereof and film moisture permeability detection device

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Embodiment Construction

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0036] The components of the raw materials for the preparation of the porous material and the weight percentages of each group are: electrospun polyimide nanofiber: 0.95-1wt%, dioxane aqueous solution: 0.095-0.1wt%, ammonia water: 0.45-0.5wt% , polyamic acid fiber: 0.0095-0.01wt%, sodium dodecylbenzenesulfonate aqueous solution: 98-98.5wt%.

[0037] Wherein, the mass ratio of the electrospun polyimide nanofibers to the dioxane aqueous solution is 10:1. In the dioxane a...

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Abstract

The invention relates to a porous material, a preparation method thereof and a film moisture permeability detection device using the porous material. The porous material is prepared from the following raw material components in percentage by weight: 0.95-1 wt% of electrospun polyimide nanofibers, 0.095-0.1 wt% of a dioxane aqueous solution, 0.45-0.5 wt% of ammonia water, 0.0095-0.01 wt% of polyamide acid fibers, and 98-98.5 wt% of a sodium dodecyl benzene sulfonate aqueous solution. The porous material is hydrophilic, can rapidly expand after absorbing water vapor, has excellent water absorption-dehydration cycle test performance stability, cannot be adhered to the inner wall of a detection box body, and ensures the accuracy of a moisture permeability detection result.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a porous material, a preparation method of the porous material, and a membrane layer moisture permeability detection device using the porous material. Background technique [0002] PS-VA (polymer stabilized vertical alignment, polymer stabilized vertical alignment) is a technology in TFT-LCD (thin film transistor liquid crystal display). In the cell-forming process of PS-VA, it is necessary to seal the liquid crystal cell with a sealant to prevent liquid crystal overflow and water vapor intrusion, maintain the cell thickness around the liquid crystal cell, and adhere to the array substrate and color filter substrate. The main components of the frame glue are resin and some additives (such as heat curing agent, UV photoinitiator, silane coupling agent, etc.). [0003] If external water vapor enters the liquid crystal cell, it will cause short circuit of the circuit, failure of t...

Claims

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Application Information

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IPC IPC(8): G01N15/08G01N5/00
CPCG01N15/08G01N5/00
Inventor 周世新
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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