Preparation method of antistatic silica gel protective film

Abstract

The invention discloses a preparation method of an antistatic silica gel protective film, comprising the following steps: S1. preparation of a substrate layer; S2. mixing methyl vinyl silicone rubber, polyisoprene rubber, silicone resin, vinyl Silicone oil, hydrogen-containing silicone oil, 3-thiocyanopropyl triethoxysilane, 2-aminobenzimidazole, nano-graphite powder, potassium monododecyl phosphate, toluene, ethyl acetate are mixed evenly, and stirred evenly, Then add methyl butynol, platinum catalyst, cyclohexanone peroxide, and stir evenly to prepare the silicone adhesive; S3. Apply the silicone adhesive evenly on the surface of the substrate layer, and solidify to form silicone adhesive layer to obtain a semi-finished protective film; S4. The semi-finished protective film is cut into strips as required to obtain the antistatic silica gel protective film; the surface resistivity of the protective film prepared by the present invention is low, which solves the problem of using the protective film. The problem that static electricity cannot be discharged during the process affects the automatic continuous production.

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

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