Composite barrier film with water and oxygen barrier function and preparation method thereof

Abstract

The invention discloses a composite barrier film with a water and oxygen barrier function and a preparation method thereof. The composite barrier film comprises a first organic silicon / inorganic silicon hybrid barrier coating, an inorganic plating layer, a second organic silicon / inorganic silicon hybrid barrier coating and a film base material which are sequentially stacked, wherein the first organic silicon / inorganic silicon hybrid barrier coating and the second organic silicon / inorganic silicon hybrid barrier coating are prepared from, by weight, 30-70 parts of multifunctional cage type polysilsesquioxane, 25-65 parts of organic silicon resin, 0-15 parts of organic silicon-modified (methyl) acrylic resin, 0.2-5 parts of photoinitiator and 5-15 parts of auxiliaries. The composite barrierfilm has the excellent water steam and oxygen barrier effect and the good bending resistance, the thickness is small, the number of layers is small, the prepared composite barrier film is short in production time and low in cost, and the coating barrier function stability and reliability are high.

Description

technical field [0001] The invention relates to the field of functional polymers, in particular, the invention relates to a composite barrier film with water and oxygen barrier function. Background technique [0002] In recent years, the vigorous development of optoelectronic technology has made organic light-emitting components (OLED), quantum dot displays (QuantumDots), organic solar cells (OPV), flexible liquid crystal screens (flexible LCD), electronic paper (E-paper), etc. will be in the future. The market occupies a considerable market share. In displays, in order to meet the above-mentioned requirements of modern technology for electronic products, it has become a development trend of optoelectronic technology to replace traditional glass substrates with plastic substrates as optoelectronic element substrates. Plastic substrates can not only provide thinner and more flexible features, but also improve the shortcomings of traditional glass substrates that are easy to ...

AI Technical Summary

Problems solved by technology

However, the practice of multiple coating or deposition of organic and inorganic layers greatly increases the complexity of the process and the production cost

In addition, the physical and chemical properties of ordinary organic layer materials and inorganic layer materials are quite different, which will cause insufficient interfacial bonding force, and easily cause some defects during the preparation of the barrier layer or during the long-term use of the device, thereby reducing the water-oxygen barrier performance.

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