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A kind of trapezoidal silicone resin reinforced silicone pressure-sensitive adhesive and preparation method thereof

A technology of silicone pressure-sensitive adhesive and silicone resin, which is applied in the direction of adhesives, adhesive additives, polymer adhesive additives, etc., and can solve the problem of poor uniformity, compatibility and dispersion of MQ silicone resin dispersion reinforcement effect and other problems, to achieve the effect of improving product transparency, improving reinforcement effect, and good reaction specificity

Active Publication Date: 2022-07-12
GUANGZHOU TINCI MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the cage polysilsesquioxane that this patent uses is trisilanol phenyl silsesquioxane, trisilanol isobutyl silsesquioxane, belongs to oxygen bridging ladder polysiloxane, although can be in Improve heat resistance to a certain extent, but its own compatibility and dispersion are poor, let alone promote the dispersion of MQ silicone resin to improve the uniformity of the reinforcing effect

Method used

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  • A kind of trapezoidal silicone resin reinforced silicone pressure-sensitive adhesive and preparation method thereof
  • A kind of trapezoidal silicone resin reinforced silicone pressure-sensitive adhesive and preparation method thereof
  • A kind of trapezoidal silicone resin reinforced silicone pressure-sensitive adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A trapezoidal silicone resin-reinforced silicone pressure-sensitive adhesive of the present embodiment consists of the following components in parts by weight:

[0055] 100 parts of methyl vinyl silicone rubber (number average molecular weight of 500,000, vinyl content of 0.75%), 100 parts of MQ silicone resin (molecular weight of 3000 to 4000, M / Q=0.75 to 0.8), 10 parts of trapezoidal reinforced silicone resin , 10 parts of hydrogen-containing silicone oil (viscosity is 50mPa s, hydrogen content is 0.3%), 1 part of inhibitor silylated alkynol, platinum catalyst 1,3-divinyl-1,1,3,3-tetramethyl Disiloxane platinum (0), (10 ppm in terms of platinum content), 200 parts of dilution solvent toluene.

[0056] The trapezoidal reinforced silicone resin is prepared by the following method:

[0057] (1) Preparation of Methylpolysiloxane Ladder Prepolymer:

[0058] In a four-necked flask equipped with a constant-pressure dropping funnel, a reflux condenser, a thermometer and an ...

Embodiment 2

[0077] A trapezoidal silicone resin-reinforced silicone pressure-sensitive adhesive of the present embodiment consists of the following components in parts by weight:

[0078] 100 parts of hydroxyl terminated silicone rubber (average molecular weight 600,000), 100 parts of MQ silicone resin (molecular weight 3000-4000, M / Q=0.75-0.8), 10 parts of trapezoidal reinforced silicone resin, 1.6 parts of organic peroxide catalyst BOP, 200 parts of dilution solvent toluene.

[0079] The trapezoidal reinforced silicone resin is prepared by the following method:

[0080] (1) Preparation of Methylpolysiloxane Ladder Prepolymer:

[0081] In a four-necked flask equipped with a constant-pressure dropping funnel, a reflux condenser, a thermometer and an electric mixer, add vinyl-terminated tetramethyldisiloxane (vinyl double-capped head, a=0, M n =186)) and isopropanol solvent, stirring and dissolving evenly, heating and warming up to 80 ℃ under nitrogen protection, adding the chloroplatini...

Embodiment 3

[0090] A trapezoidal silicone resin-reinforced silicone pressure-sensitive adhesive of the present embodiment consists of the following components in parts by weight:

[0091] 100 parts of hydroxyl terminated silicone rubber (average molecular weight 600,000), 100 parts of MQ silicone resin (molecular weight 3000-4000, M / Q=0.75-0.8), 10 parts of trapezoidal reinforced silicone resin, 1.6 parts of organic peroxide catalyst BOP, 200 parts of dilution solvent toluene.

[0092] The trapezoidal reinforced silicone resin is prepared by the following method:

[0093] (1) Preparation of Methylpolysiloxane Ladder Prepolymer:

[0094] In a four-necked flask equipped with a constant-pressure dropping funnel, a reflux condenser, a thermometer and an electric mixer, add vinyl-terminated polydimethylsiloxane (a=8, average molecular weight M n 800) and ethylene glycol monoethyl ether solvent, stir and dissolve evenly, heat up to 80°C under nitrogen protection, add the calculated amount of ...

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Abstract

The invention belongs to the technical field of silicone rubber, and discloses a trapezoidal silicone resin-reinforced organosilicon pressure-sensitive adhesive and a preparation method thereof. The silicone pressure-sensitive adhesive includes addition reaction curing pressure-sensitive adhesive composed of methyl vinyl silicone rubber, MQ silicone resin, trapezoidal reinforced silicone resin and hydrogen-containing silicone oil, or includes hydroxyl-terminated silicone rubber, MQ silicone resin and Peroxide-curable pressure sensitive adhesive composed of trapezoidal reinforced silicone resin. The pressure-sensitive adhesive of the present invention is added to the trapezoidal silicone resin prepared by a specific method, in addition to improving the peel strength and high temperature stickiness, it also has the effects of promoting the dispersion of the MQ silicone resin and improving the transparency of the product. The obtained silicone pressure-sensitive adhesive has no shrinkage crater during curing, and no residue after peeling. Has broad market prospects.

Description

technical field [0001] The invention belongs to the technical field of silicone rubber, in particular to a trapezoidal silicone resin-reinforced silicone pressure-sensitive adhesive and a preparation method thereof. Background technique [0002] Silicone pressure sensitive adhesives can bond low surface energy surfaces due to their good high and low temperature resistance, chemical resistance and low dielectric properties. This makes silicone pressure-sensitive adhesive tapes widely used in industrial production in the form of splicing tapes, electrical tapes, plasma spray tapes, and machining tapes. And because of its non-toxic, non-irritating, physiologically inert, wide temperature range, suitable bonding strength and drug penetration, it is also widely used in medical and transdermal therapeutic system preparations. [0003] The main body of the silicone pressure-sensitive adhesive is mixed with liquid silicone rubber and MQ silicone resin in a certain proportion. Liqu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J183/07C09J183/04C09J11/08C08G77/44C08G77/38C08G77/20
CPCC09J183/04C09J11/08C08G77/44C08G77/38C08G77/20C08L2205/025C08L2205/035C08L2201/08C08L2201/10C08L83/04C08L83/10
Inventor 李泽勇姚坤满郑贵明柳晨醒何海曾祥雷
Owner GUANGZHOU TINCI MATERIALS TECH
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