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Silicon free release film for silicone adhesive tape and preparation method thereof

A release film, non-silicon release technology, used in adhesives, film/sheet release liners, film/sheet adhesives, etc., which can solve problems such as non-conformity, substrate surface damage, silicon pollution, etc.

Inactive Publication Date: 2020-03-27
SUZHOU TAILUN ELECTRONIC MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional release film is usually silicon-containing release film, which is easy to cause silicon pollution, and will cause damage to the substrate surface during the transfer process, which does not meet the needs of modern society

Method used

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  • Silicon free release film for silicone adhesive tape and preparation method thereof
  • Silicon free release film for silicone adhesive tape and preparation method thereof
  • Silicon free release film for silicone adhesive tape and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A silicon-free release film for silicone tape disclosed by the invention comprises a film substrate layer and a non-silicon release layer, and the non-silicon release layer includes the following components in parts by weight:

[0025]

[0026] Further, the preparation method of the hydroxyl-modified vinyl chloride-vinyl acetate-maleic acid copolymer is: add 100 parts of maleic anhydride esterification product and 80 parts of vinyl acetate to the high-pressure polymerization kettle under vacuum conditions, and then separately Add 150 parts by weight of vinyl chloride and 1.2 parts by weight of dispersion stabilizer, stir and heat up to 60°C, then introduce 20 parts of desalted water and 3 parts by weight of initiator potassium persulfate, keep warm for 3 hours, cool down and filter to obtain modified vinyl chloride - vinyl acetate-maleic acid copolymer; wherein, the molecular weight of the modified vinyl chloride-vinyl acetate-maleic acid copolymer is 30,000, and the ...

Embodiment 2

[0038] A silicon-free release film for silicone tape disclosed by the invention comprises a film substrate layer and a non-silicon release layer, and the non-silicon release layer includes the following components in parts by weight:

[0039]

[0040] Further, the preparation method of the hydroxyl-modified vinyl chloride-vinyl acetate-maleic acid copolymer is: add 100 parts of maleic anhydride esterification product and 80 parts of vinyl acetate to the high-pressure polymerization kettle under vacuum conditions, and then separately Add 160 parts by weight of vinyl chloride and 1.8 parts by weight of dispersion stabilizer, stir and heat up to 65°C, then introduce 28 parts of desalted water and 4 parts by weight of initiator potassium persulfate, keep warm for 3 hours, cool down and filter to obtain modified vinyl chloride - vinyl acetate-maleic acid copolymer; wherein, the molecular weight of the modified vinyl chloride-vinyl acetate-maleic acid copolymer is 32000.

[0041]...

Embodiment 3

[0052] The raw materials and process of this embodiment are basically the same as those of Embodiment 1, the only difference is that hydroxyethyl acrylate is changed to hydroxypropyl acrylate.

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PUM

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Abstract

The invention discloses a silicon free release film for a silicone adhesive tape and a preparation method thereof. The release film comprises a film substrate layer and a non-silicon release layer. The non-silicon release layer comprises following components in parts by weight: 40 to 60 parts of hydroxyl modified vinyl chloride-vinyl acetate-maleic acid copolymer; 20 to 25 parts of polyhydroxyethyl methacrylate resin, 15 to 25 parts of polyvinyl alcohol, 18 to 20 parts of modified graphite fluoride, 10 to 15 parts of a diluent, and 3 to 5 parts of a combined auxiliary agent. The disclosed silicon free release film does not contain silicon, will not cause silicon pollution, and does not generate any residue during the transfer process. Moreover, the silicon free release film has an excellent release performance, is resistant to corrosion and scratch, and can be applied to silicon adhesive tapes.

Description

technical field [0001] The invention relates to the field of release films, in particular to a silicon-free release film for silica gel tapes and a preparation method thereof. Background technique [0002] Release film, also known as release film and isolation film, is a film whose surface can be distinguished, and is generally used with pressure-sensitive adhesives. Usually, the release layer is coated on the film substrate layer, generally there are fluorine-coated release layer, silicone oil release layer and non-silicon release layer. Release film is widely used in electronic adhesives, printed circuit boards, mobile phones and other fields. However, the traditional release film is usually silicon-containing release film, which is easy to cause silicon pollution, and will cause damage to the substrate surface during the transfer process, which does not meet the needs of modern society. . Contents of the invention [0003] The technical problem to be solved by the pr...

Claims

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Application Information

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IPC IPC(8): C09J7/40C09D127/06C09D133/14C09D129/04C09D7/62C09D7/65C09D7/61
CPCC08K2201/011C09D127/06C09D7/61C09D7/62C09D7/65C09D7/70C09J7/401C08L33/14C08L29/04C08K13/06C08K3/04C08K7/08C08K3/38C08K3/16
Inventor 叶爱磊王磊戴玮洁韩仲友谈纪金
Owner SUZHOU TAILUN ELECTRONIC MATERIALS CO LTD
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