Defective-glue-prevention silica gel protection membrane for processing

Abstract

The invention discloses a defective-glue-prevention silica gel protection membrane for processing. The defective-glue-prevention silica gel protection membrane comprises a base material layer and an organic silica gel layer coating the surface of the base material layer. The organic silica gel layer is prepared from 200-350 parts of methyl vinyl silicone rubber, 10-40 parts of polyisoprene rubber,10-25 parts of silicone resin, 2-6 parts of vinyl silicone oil, 0.5-5 parts of hydrogen-containing silicone oil, 0.3-4 parts of 3-3-thiocyanatopropyltriethoxysilane, 0.3-2 parts of 2-aminobenzimidazole, 0.5-3 parts of methylbutynol, 0.5-2 parts of a platinum catalyst, 0.3-1 part of cyclohexanone peroxide, 0.2-3.8 parts of nano-graphite powder, 1-3 parts of lauryl alcohol phosphoric acid ester potassium, 400-600 parts of methylbenzene and 250-400 parts of ethyl acetate. The protection membrane is moderate in viscosity, the problems of edge warping and even shedding in the using process do noteasily occur, defective glue is easily removed completely, and the technology requirement for temporary fixing during mobile phone processing can be met.

Description

technical field [0001] The invention relates to a protective film, in particular to an anti-residue rubber silica gel protective film for manufacturing process. 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, developing and developing a p...

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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