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Low-climbing organic silicon pressure-sensitive adhesive and preparation method and application thereof

A silicone pressure-sensitive adhesive, an organic technology, applied in adhesives, adhesive additives, pressure-sensitive films/sheets, etc., can solve problems such as high cost, no research on the peeling force of pressure-sensitive adhesives, and increased costs

Pending Publication Date: 2021-09-14
SUZHOU SIDIKE NEW MATERIALS SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this silicone protective film adopts the Dow Corning system as the glue component, and the cost is relatively high. There is no research on the peeling force climb of the pressure-sensitive adhesive under high temperature and high humidity environment.
[0006] Another example is that the Chinese patent application CN109370458A provides a foam silica gel protective film. Its raw materials include silica gel protective film, foam, double-sided adhesive tape, and release film. The silica gel protective film is composed of silica gel particles, polyurethane, cross-linking agent, collagen, It is composed of silica particles, coupling agent, high temperature resistant filler, activation solution, and reinforcing filler. However, this material is resistant to high temperature and too much reinforcing filler is added, which increases the cost. Peel Force Climb was not studied

Method used

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  • Low-climbing organic silicon pressure-sensitive adhesive and preparation method and application thereof
  • Low-climbing organic silicon pressure-sensitive adhesive and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] For the low-climbing silicone pressure-sensitive adhesive provided in this example, its raw materials include 100 parts by weight of vinyl polysiloxane, 50 parts of methyl MQ silicone resin, 1 part of crosslinking agent, 0.6 parts of catalyst, inhibitor 0.1 part of agent, 150 parts of diluting solvent. The vinyl polysiloxane used is terminal vinyl polysiloxane, and the specific chemical structure formula is ViMe 2 SiO(SiMe 2 O) n (SiMeViO) m SiMe 2 Vi, the vinyl content is 0.1%; the cross-linking agent adopts end-side hydrogen-containing silicone oil: hydrogen-terminated polydimethylmethylhydrogensiloxane, the chemical structure formula is (CH 3 ) 2 (H)SiO[(CH 3 )(H)SiO] y Si(H)(CH 3 ) 2 , with a hydrogen content of 1.2%.

Embodiment 2

[0044] For the low-climbing silicone pressure-sensitive adhesive provided in this example, its raw materials include 100 parts by weight of vinyl polysiloxane, 50 parts of methyl MQ silicone resin, 1.5 parts of crosslinking agent, 0.6 parts of catalyst, inhibitor 0.1 part of agent, 150 parts of diluting solvent.

[0045] The vinyl polysiloxane used is ViMe 2 SiO(SiMe 2 O) n (SiVi 2 O) m SiMe 2 Vi, the vinyl content is 0.1%; the crosslinking agent used is side hydrogen silicone oil: polydimethylmethylhydrogensiloxane, the chemical structure is (CH 3 ) 3 SiO[(CH 3 ) 2 SiO] x [(CH 3 )(H)SiO] y Si(H)(CH 3 ) 2 , with a hydrogen content of 1.2%.

Embodiment 3

[0047] The low-climbing silicone pressure-sensitive adhesive provided in this example has the same raw materials as those in Example 1 in parts by weight. The vinyl polysiloxane and crosslinking agent used are the same as in Example 2.

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Abstract

The invention discloses a low-climbing organic silicon pressure-sensitive adhesive and a preparation method and application thereof, and belongs to the technical field of pressure-sensitive adhesive silica gel protective films. The organic silicon pressure-sensitive adhesive is prepared from the following raw materials in parts by weight: 100 parts of vinyl polysiloxane, 20 to 100 parts of methyl MQ silicon resin, 0.5 to 1.5 parts of a cross-linking agent, 0.5 to 1 part of a catalyst, 0.05 to 1 part of an inhibitor and 100 to 200 parts of a diluting solvent. Vinyl polysiloxane with a special structure and vinyl content and cross-linking agent silicon-hydrogen group-containing silicone oil with a special structure and hydrogen content are adopted, the prepared organic silicon pressure-sensitive adhesive is low in stripping force and obvious in climbing effect under high-temperature and high-humidity conditions; the adhesive is simple in synthesis operation process, low in cost and convenient to produce and use.

Description

technical field [0001] The invention belongs to the field of pressure-sensitive adhesive silicone protective film, in particular to a low-climb silicone pressure-sensitive adhesive and a preparation method thereof. Background technique [0002] Silicone pressure-sensitive adhesives generally refer to pressure-sensitive adhesives with silicone polymers as the main body, or acrylic and silicone-modified rubber-type pressure-sensitive adhesives modified by silicone polymers. Compared with traditional acrylate pressure-sensitive adhesives and rubber-type pressure-sensitive adhesives, it has excellent chemical resistance, water resistance, oil resistance, solvent resistance, high temperature resistance, low temperature resistance, thermal degradation resistance, oxidative degradation resistance, etc., and can Adhesive bonding with a variety of difficult-to-bond materials such as untreated polyolefin (BOPP, PET, PE, etc.) fluoroplastics, polyimide, and polycarbonate. Especially w...

Claims

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Application Information

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IPC IPC(8): C09J183/07C09J183/04C09J11/08C09J7/25C09J7/38
CPCC09J183/04C09J11/08C09J7/255C09J7/38C09J2301/302C09J2467/006C08L83/04
Inventor 金闯李健
Owner SUZHOU SIDIKE NEW MATERIALS SCI & TECH
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