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A kind of diffusion film and preparation method thereof

A diffusion film and diffusion layer technology, applied in polyurea/polyurethane coatings, diffusing elements, coatings, etc., can solve the problems of human physiological disease hazards, solvent is not easy to discharge, human body hazards still exist, etc. Harmful, reduce fire safety hazards, obvious effect of green environmental protection significance

Active Publication Date: 2015-10-14
HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both kinds of diffusion film production areas require a clean place. The clean place is relatively airtight, and the solvent is not easy to discharge. The precision coating and drying method is one of the mainstream methods at present, and the coating liquid mostly uses a coating liquid containing a solvent, such as toluene , xylene, methyl ethyl ketone, butyl acetate, ethyl acetate, etc. These coating solutions will volatilize in the air or remain in the dried coating during the preparation and coating process, which is prone to fire and explosion. , and cause physiological disease hazards to the human body
Although the manufacturer of the diffusion film has increased the air exchange rate and blast volume in the clean room, and introduced the solvent discharged from the incinerator after incineration and drying, the solvent volatilization still exists in the process of preparation, stirring, and circulation, and the possibility of fire and explosion. and the hazards to the human body still exist

Method used

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  • A kind of diffusion film and preparation method thereof
  • A kind of diffusion film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Water-based polyurethane resin emulsion (bayer, polyurethane dispersion, XP2558, solid content 37%) 88 parts, water-based crosslinking agent (hydrophilic aliphatic isocyanate, bayer, VPLS2319) 8 parts, defoamer (siloxane , BYK-045) 0.2 parts, wetting and dispersing agent (alkanol ammonium salt of multifunctional polymer, BYK-181) 0.8 parts, diffusion particles (PMMA, Sekisui MBX-5) 3 parts, after mixing and stirring, carry out Anti-adhesive coating, dry and ready to use.

[0031] 70 parts of water-based polyurethane resin emulsion (bayer, polyurethane dispersion, XP2558, solid content of 37%), 6 parts of water-based crosslinking agent (hydrophilic aliphatic isocyanate, bayer, VPLS2319), defoamer (siloxane , BYK-045) 0.2 parts, wetting and dispersing agent (alkanol ammonium salt of multifunctional polymer, BYK-181) 3.7 parts, diffusion particles (PMMA, Sekisui MBX-10) 10 parts, diffusion particles (PMMA, After mixing and stirring 10 parts of Sekisui MBX-12), the diffusi...

Embodiment 2

[0033] Water-based polyacrylic resin emulsion (bayer, water-based hydroxyacrylic dispersion, XP2427, solid content 42%) 85 parts, water-based crosslinking agent (hydrophilic aliphatic isocyanate, bayer, VPLS2151) 8.5 parts, defoamer (silicon Oxygen, BYK-045) 0.2 parts, wetting and dispersing agent (block copolymer with affinity group, BYK-190) 1.3 parts, diffusion particles (PMMA, Sekisui MBX-5) 5 parts, mix and stir Afterwards, anti-adhesive layer coating is carried out, and it is ready to use after drying.

[0034]70 parts of water-based polyacrylic resin emulsion (bayer, water-based hydroxyacrylic dispersion, XP2427, solid content of 42%), 6 parts of water-based crosslinking agent (hydrophilic aliphatic isocyanate, bayer, VPLS2151), defoamer (silicon Oxylkane, BYK-045) 0.2 parts, wetting and dispersing agent (block copolymer with affinity group, BYK-190) 3.8 parts, diffusion particles (PMMA, Sekisui MBX-15) 20 parts after mixing and stirring , carry out the diffusion layer...

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Abstract

Disclosed are a diffusion film and a production method. The diffusion film comprises an optical base film and a diffusion layer and an anti-sticking layer which are formed on the optical base film. Coating liquid which is prepared from, by weight, 40-80% water soluble resin emulsion, 10-50% diffusion particles and 1.6-14% functional additives is coated and fixed on the surface of the optical base film to form into the diffusion layer. Coating liquid which is prepared from, by weight, 60-90% water soluble resin emulsion, 0.5-5% diffusion particles and 1.6-14% functional additives is coated and fixed on the surface of the optical base film to form into the anti-sticking layer. Water-based coating liquid which is formed by compatibility of the water soluble resin emulsion, the diffusion particles, water-based crosslinking agents and the functional additives is utilized to perform coating, so that potential risks and human body harms caused by solvents can be avoided.

Description

technical field [0001] The invention relates to a water-based environment-friendly coating solution for preparing a diffusion film for a backlight module and a preparation method thereof. Background technique [0002] In recent years, various liquid crystal flat panel display technologies and products have developed rapidly, and flat panel displays have been widely used in various fields, such as LCD and LED liquid crystal display technologies used in TVs and mobile phones. LCD and LED displays require a backlight unit (BLU) to provide sufficient brightness and a uniform light source to display images. The diffuser film is used in the backlight unit (BLU), and its function is to distribute the line light source or point light source into a surface light source, thereby providing a uniform surface light source for the flat panel display. [0003] Diffusion film preparation technologies mainly include precision coating drying method and UV curing film pressing method. Both k...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/02C09D133/00C09D175/04C09D7/12
Inventor 邓康清杨柱夏萍刘振宇张宏元常征袁东芝龚露露
Owner HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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