Preparation method of protective film used in electronic equipment

Abstract

A preparation method of a protective film used in electronic equipment comprises the following steps: a, fully mixing vinyl silicone oil and methyl vinyl rubber for blending to obtain base glue; b, fully mixing magnesium aluminate spinel and an additive, grinding, adding an organic solvent, mixing evenly, adding a binder for high speed stirring to obtain a mixture I; c, adding the base glue into the mixture I, then adding a tackifier, a crosslinking agent and an inhibitor, evenly mixing, and drying to obtain a blank material; and d, pressing the blank material for forming, then debinding, pre sintering, sintering, cutting and forming to obtain the protective film. The protective film prepared by the method is non-gumming and non-sticking to glass, adhesion with a PET substrate can reach the effect of cohesive failure, transparency is high, the whole production process is simple, and the production efficiency is high.

Description

technical field [0001] The invention belongs to the technical field, and in particular relates to a preparation method for a protective film on electronic equipment. Background technique [0002] With the development of modern technology, more and more smart electronic products have entered people's lives and become an indispensable part of people's lives. For example, smart phones, tablet computers, smart watches, etc., the display screens of these smart electronic products are covered with a protective layer. [0003] The existing protective layer often produces scratches during use, which affects the display effect of the screen. At the same time, the thickness of the existing protective layer is relatively thick, so that smart electronic products cannot meet the requirements of thinness and lightness, which affects their sense of use. [0004] At present, with the wide application of touch screens, the overall cost of screens is very high for electronic products contai...

AI Technical Summary

Problems solved by technology

For manufacturers, the screen protective film is required to be dustproof, easy to remove, and leave no residual glue, which can greatly improve production efficiency and reduce the damage rate of the touch screen; for users, the general protective film glue is acrylic Ester glue can protect the screen to a certain extent, but when the life of the acrylic protective film expires, it is very troublesome to replace it, because the acrylic protective film is directly bonded to the touch screen, and the residual glue must be removed. If it is completely removed, it will cause great damage to the screen and greatly shorten the service life of the mobile phone

The transparency of ordinary silicone rubber is only about 81%, which is not suitable for screen protective film glue. Highly transparent silicone and PET substrates and double 85 resistance performance on the market cannot meet the requirements, and are not suitable for screen protective film glue.