Modified PMMA optical film and preparation method thereof

An optical thin film and modification technology, which is applied in the field of PMMA optical thin film and its preparation, can solve problems such as difficulty in uniform dispersion, slow dissolution rate, and poor flatness of the film.
CN109942850AActive Publication Date: 2019-06-28SHENZHEN SELEN SCI & TECH CO LTD +2
6 Cites 8 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHENZHEN SELEN SCI & TECH CO LTD
Publication Date
2019-06-28

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a modified PMMA optical film. The modified PMMA optical film contains the following components in parts by mass: 60-80 parts of PMMA resin, 20-40 parts of aromatic (co)polycarbonate and 5-14 parts of a compatibilizer, 0.5-8 parts of a flatting agent. The modified PMMA optical film has a flat and smooth surface, is uniform in thickness, high in light transmittance, low in haze level, colorless and transparent and has good heat resistance and tenacity. The invention further provides a preparation method of the modified PMMA optical film. The preparation method comprises the steps of sequentially preparing modified resin and modified coating liquid, forming a film through coating, and carrying out thermal stretch formation and the like. The method is simple in process,easy for industrial production and can be used for preparing the ultrathin and high-transparency modified PMMA optical film.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of optical thin films, in particular to a PMMA optical thin film and a preparation method thereof. Background technique

[0002] PMMA has very high light transmittance, extremely low light absorbance, high mechanical strength and good chemical stability, and is one of the most ideal optical materials. However, the glass transition temperature of traditional PMMA resin is less than 110 ° C, poor high temperature resistance, high hardness, poor toughness, easy to be brittle in processing engineering, and can not achieve ultra-thinning. PC resin is also a commonly used optical material, with high light transmittance and high glass transition temperature. After blending PC and PMMA, it can significantly improve the toughness and high temperature resistance of PMMA film, and reduce water absorption. However, on the one hand, PMMA and PC are not fully compatible systems, and there is interface separation. The film prepared...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More