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An ultra-thin composite optical film based on pmma/pc and its preparation method and application

An optical film, ultra-thin technology, used in optics, optical components, instruments, etc., can solve the problems of cumbersome stretching method, can not meet the requirements of optical film, different thickness, etc., to overcome difficult processing characteristics, Improved film strength, flexibility, and uniform thickness

Active Publication Date: 2022-07-15
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Patent CN1218738A Biaxially oriented polyester film and its preparation method, the polyester under the glass transition temperature is subjected to multiple biaxial orientations in the longitudinal and transverse sequences, or multiple stretches by simultaneous biaxial orientation, To obtain a high-performance polyester film, this method that requires multiple stretches is cumbersome, and it is easy to cause film tearing and uneven thickness
[0005] The patent CN1984764 oriented polyester film is stretched in at least one direction, and the thickness of the obtained film is 12-250 μm. For optical films, the film obtained by this preparation method is too thick to meet the requirements of optical films.

Method used

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  • An ultra-thin composite optical film based on pmma/pc and its preparation method and application
  • An ultra-thin composite optical film based on pmma/pc and its preparation method and application

Examples

Experimental program
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Embodiment 1

[0034] An ultra-thin composite optical film based on PMMA / PC, comprising raw materials in the following weights:

[0035] Optical grade PMMA 5Kg, optical grade PC 5Kg, sodium dodecylbenzene sulfonate 0.05Kg, polybutadiene rubber 0.05Kg, polysiloxane 0.02Kg, modified antistatic agent 0.02Kg, tetraethylene glycol monohard Fatty acid ester 0.01Kg, fluorinated polyethylene 0.01Kg; the modified antistatic agent is composed of 0.002Kg lithium trifluoromethanesulfonimide and 0.018ASA by weight, specifically: heating ASA to 350°C by microwave, Take it out, continue to add lithium trifluoromethanesulfonimide at 350° C., stir at 1000 rpm for 30 minutes, cool naturally, pulverize, and pass through a 500-mesh sieve to obtain a modified antistatic agent.

[0036] A preparation method of an ultra-thin composite optical film based on PMMA / PC, comprising the following steps:

[0037] S1. mix the optical grade PMMA, optical grade PC, sodium dodecyl benzene sulfonate, polybutadiene rubber, pol...

Embodiment 2

[0042] An ultra-thin composite optical film based on PMMA / PC, comprising raw materials in the following weights:

[0043] Optical grade PMMA 8Kg, optical grade PC 8Kg, sodium dodecylbenzene sulfonate 0.08Kg, polybutadiene rubber 0.08Kg, polysiloxane 0.025Kg, modified antistatic agent 0.025Kg, tetraethylene glycol monohard Fatty acid ester 0.02Kg, fluorinated polyethylene 0.02Kg; the modified antistatic agent is composed of 0.0025Kg lithium trifluoromethanesulfonimide and 0.0225Kg ASA by weight, specifically: heating ASA to 350°C by microwave, Take it out, continue to add lithium trifluoromethanesulfonimide at 350° C., stir at 1000 rpm for 30 minutes, cool naturally, pulverize, and pass through a 500-mesh sieve to obtain a modified antistatic agent.

[0044] A preparation method of an ultra-thin composite optical film based on PMMA / PC, comprising the following steps:

[0045] S1. mix the optical grade PMMA, optical grade PC, sodium dodecyl benzene sulfonate, polybutadiene rubber...

Embodiment 3

[0050] An ultra-thin composite optical film based on PMMA / PC, comprising raw materials in the following weights:

[0051] Optical grade PMMA 10Kg, optical grade PC 10Kg, sodium dodecylbenzene sulfonate 0.1Kg, polybutadiene rubber 0.1Kg, polysiloxane 0.03Kg, modified antistatic agent 0.03Kg, tetraethylene glycol monohard Fatty acid ester 0.03Kg, fluorinated polyethylene 0.03Kg; the modified antistatic agent is composed of 0.003Kg lithium trifluoromethanesulfonimide and 0.027Kg ASA by weight, specifically: heating ASA to 350°C by microwave, Take it out, continue to add lithium trifluoromethanesulfonimide at 350° C., stir at 1000 rpm for 30 minutes, cool naturally, pulverize, and pass through a 500-mesh sieve to obtain a modified antistatic agent.

[0052] A preparation method of an ultra-thin composite optical film based on PMMA / PC, comprising the following steps:

[0053] S1. mix the optical grade PMMA, optical grade PC, sodium dodecyl benzene sulfonate, polybutadiene rubber, ...

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Abstract

The invention discloses an ultra-thin composite optical film based on PMMA / PC, which belongs to the technical field of optical film preparation. An ultra-thin composite optical film based on PMMA / PC, comprising the following raw materials: optical grade PMMA, optical grade, surface modifier, toughening agent, defoamer, modified antistatic agent, dispersant, and leveling agent. The present invention adopts melt blending extrusion and formula improvement, effectively controls the flow between different melt layers, makes it evenly distributed, enhances the bonding, significantly improves the impact strength and toughness of the material, and overcomes the difficult processing characteristics of PMMA. , improve the optical performance of the optical film; adopt synchronous optical biaxial stretching to ensure product consistency in continuous manufacturing, and realize the production of ultra-thin composite optical film with an effective width of 2.5m. The ultra-thin composite optical film of PMMA / PC of the present invention Optical film, 30‑50um thickness, uniform thickness, high transmittance, good impact resistance and toughness.

Description

technical field [0001] The invention relates to an optical film and a forming process thereof, in particular to an ultra-thin composite optical film based on PMMA / PC and a preparation method and application thereof. Background technique [0002] At present, liquid crystal display is the mainstream flat panel display technology, which is widely used in LCD TVs, notebook computers, monitors and mobile phones. In the entire TFT-LCD production process, the total required area of ​​the optical film is about 15-20 times that of the panel, and the cost accounts for about 15-20% of the LCD panel. At the same time, the explosive growth of the domestic touch screen industry has prompted a rapid increase in the demand for optical films. Optical films have become one of the most important strategic raw materials at the front end of the optoelectronic industry chain. [0003] With the increasing cost pressure of global LCD panel companies, panel companies have a higher proportion of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/12C08L69/00C08L9/00C08L9/02C08L83/04C08L51/04C08K5/42C08K5/103C08K5/435C08J5/18C08J7/04G02B1/16G02B1/12
CPCC08J5/18C08J7/04G02B1/16G02B1/12C08J2333/12C08J2369/00C08J2409/00C08J2483/04C08J2409/02C08K5/42C08K5/103C08K5/435
Inventor 竹文坤何嵘袁长迎刁锐敏罗林段涛冯金波
Owner SOUTHWEAT UNIV OF SCI & TECH
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