Preparation method of antistatic silica gel protective film

Abstract

The invention discloses a preparation method of an antistatic silica gel protective film. The preparation method comprises following steps: 1, a substrate layer is prepared; 2, methyl vinyl silicone rubber, polyisoprene rubber, silicone resin, vinyl silicone oil, hydrogen-containing silicone oil, 3-thiocyanopropyltriethoxysilane, 2-aminobenzimidazole, nanometer graphite powder, lauryl alcohol phosphoric acid ester potassium, toluene, and ethyl acetate are uniformly mixed and stirred, methylbutynol, platinum catalyst, and cyclohexanone peroxide are stirred uniformly to prepare an organic silicagel adhesive; 3, the surface of the substrate layer is uniformly coated with the organic silica gel adhesive, and curing is carried out so as to form an organic silica gel layer and obtain a semi-finished protective film; and 4, the semi-finished protective film is cut into strips based on need so as to obtain the antistatic silica gel protective film. The antistatic silica gel protective film islow in surface resistivity; and in using process of the antistatic silica gel protective film, no static discharging is caused, so that a problem in the prior art that automatic continuous product isinfluenced by static discharging is solved.

Description

technical field [0001] The invention relates to the field of protective films, in particular to a preparation method of an antistatic silica gel protective film. Background technique [0002] Before the assembly of the smart phone is completed, a medium-viscosity protective film needs to be pasted and temporarily fixed around the frame. After the assembly of the smartphone is completed, the protective film pasted around the frame is torn off. At present, this kind of protective film comes from foreign suppliers. Domestic products have the following technical problems and cannot replace imported products. The main problems are: 1. The viscosity is too low or too high, so that the edge warps or even falls off during use. , or produce residual glue during removal; 2. The base material is too hard or too soft, so that it is easy to warp or break; 3. The antistatic effect is not good, which affects automatic continuous production. [0003] Therefore, how to develop a moderately ...

AI Technical Summary

Problems solved by technology

At present, this kind of protective film comes from foreign suppliers. Domestic products have the following technical problems and cannot replace imported products. The main problems are: 1. The viscosity is too low or too high, so that the edge warps or even falls off during use. , or produce residual glue during removal; 2. The base material is too hard or too soft, so that it is easy to warp or break; 3. The antistatic effect is not good, which affects automatic continuous production

Images