Preparation method of special ink for touch panel

Abstract

The invention discloses a preparation method of special ink for a touch panel. The preparation method comprises the following procedures of: 1) adding an appropriate amount of polyester modified methoxyphenyl silicon resin, titanium dioxide and the like into a refiner and performing dispersion to form a primary product, 2) adding an appropriate amount of octaphenyl polyoxyethyiene, polytetrafluoroethylene wax, polyether modified siloxane and an organosilicon defoaming agent into the primary product and performing grinding and dispersion to form a secondary product, 3) adding an appropriate amount of hexamethoxy methyl melamine resin into the secondary product and performing the grinding, dispersion and filtration to form an ink main agent, and 5) adding dimethylbenzene and cyclohexanone into the ink main agent and performing stirring to form the special ink for the touch panel. According to the method, the polyester modified methoxyphenyl silicon resin is adopted as a binder, and has excellent thermostability of the methoxyphenyl silicon resin and better flexibility of linear polyester.

Description

technical field [0001] The invention relates to the technical field of inks, in particular to a method for preparing special inks for touch panels. Background technique [0002] The intelligentization of electronic products is the development trend of the times. With the wide application of touch screens in smart phones, tablet computers and other fields, the touch screen industry has developed rapidly. The integrated capacitive touch screen (OGS) can meet the ultra-thin requirements of intelligent terminals of electronic products to the greatest extent, and is an inevitable choice for high-end brand terminals with touch screens in the future. The OGS touch screen is coated with ITO conductive film on the ink film layer. Since the ITO coating process needs to be completed at a high temperature of 280 ° C ~ 300 ° C, the touch screen ink must have excellent high temperature resistance. [0003] High temperature resistant touch screen ink is mainly composed of linking materia...

AI Technical Summary

Problems solved by technology

However, the existing high-temperature-resistant inks based on inorganic glass are difficult to maintain high-temperature thermal stability, while having good physical and mechanical properties and chemical reagent corrosion resistance.

For example, some high-temperature resistant inks have good heat resistance and adhesion, but their silk screen printing process costs are high, which is not conducive to wide application in industry; some high-temperature resistant inks have good chemical corrosion resistance , adhesion and hardness, but its heat-resistant temperature is limited, and it is difficult to withstand baking at 200°C