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Preparation method of antistatic silica gel protective film

A protective film and antistatic technology, applied in the direction of film/flaky adhesives, adhesives, non-polymer adhesive additives, etc., can solve the problems of affecting automatic continuous production, poor antistatic effect, low viscosity, etc. , to achieve the effect that it is not easy to warp or even fall off, improve the antistatic effect, and have strong cohesion

Active Publication Date: 2021-06-25
ZHEJIANG OUREN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Preparation method of antistatic silica gel protective film
  • Preparation method of antistatic silica gel protective film

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Effect test

Embodiment 1~4

[0025] Embodiment 1~4: a kind of preparation method of antistatic silica gel protective film, comprises the following steps:

[0026] S1. Coating an adhesive on the surface of a PET film 101, drying to form an adhesive layer 102, and then hot-compressing the PET film 101 and a PE film 103 to obtain a substrate layer 1;

[0027] S2. Methyl vinyl silicone rubber, polyisoprene rubber, silicone resin, vinyl silicone oil, hydrogen-containing silicone oil, 3-thiocyanatopropyltriethoxysilane, 2-aminobenzimidazole, nano Mix graphite powder, potassium monododecyl phosphate, toluene and ethyl acetate evenly, stir for 30-60 minutes, then add methyl butynol, platinum catalyst, cyclohexanone peroxide, and stir for 10-20 minutes to obtain organic Silicone adhesive;

[0028] S3. uniformly coating the silicone adhesive on the surface of the substrate layer 1, and curing it at 140-150° C. to form the silicone layer 2 to obtain a semi-finished protective film;

[0029] S4. Cut the semi-finish...

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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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/29C09J183/07C09J109/00C09J183/04C09J11/06C09J11/04
CPCC09J7/29C09J183/04C09J11/06C09J11/04C09J2467/006C09J2423/046C09J7/30C09J11/08C08K2201/017C08L83/04C08L9/00C08K13/02C08K3/04C08K5/3447C08K5/521C08K5/548
Inventor 夏厚君涂大记潘华杨晓明
Owner ZHEJIANG OUREN NEW MATERIALS CO LTD
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