Organic silicon rubber composite tackifier and preparation method thereof

A silicone rubber and composite technology, applied in the direction of adhesive additives, polymer adhesive additives, etc., can solve the problems of time-consuming, labor-intensive surface treatment, increased risk, toxicity, etc., and save the pretreatment process and materials , excellent effect

Inactive Publication Date: 2015-09-09
SHENZHEN FLOURISH ORGANOSILICONE MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is known that in order to improve the phase adhesion, the base material is pre-coated or surface treated by other chemical and physical methods. This surface treatment is time-consuming and labor-intensive, and the primer contains toxic and flammable organic solvents. increased risk

Method used

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  • Organic silicon rubber composite tackifier and preparation method thereof
  • Organic silicon rubber composite tackifier and preparation method thereof
  • Organic silicon rubber composite tackifier and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment one: First, mix epoxy silane and vinyl silane at a ratio of 1:1.5 and react with a platinum catalyst at a temperature of 150°C for 4 hours, then lower the temperature to 80°C, and remove small molecules and untreated compounds under reduced pressure. The reacted silane is obtained as an intermediate containing an epoxy group structure; after mixing acryloyloxysilane and vinyl silane at a ratio of 1:1.5, the reaction is carried out under a platinum catalyst at a temperature of 100°C for 6 hours, and then Lower the temperature to 80°C, remove small molecules and unreacted silane under reduced pressure to obtain an intermediate containing an acryloyloxy structure; The intermediate is mixed at a ratio of 1:1, and this mixture is mixed with silicone oil. The chemical formula of the silicone oil is:

[0026]

[0027] Where: R 1 : Methyl, Vinyl, Hydroxyl

[0028] R 2 : methyl, vinyl, hydrogen

[0029] After mixing at a ratio of 1:1.2, react at a temp...

Embodiment 2

[0030] Embodiment two : First, mix epoxy silane and vinyl silane with a ratio of 1:1.55, then react at 160°C under a platinum catalyst for 4.5 hours, then cool down to 80°C, remove small molecules and Unreacted silane, to obtain an intermediate containing epoxy group structure; mix acryloyloxysilane and vinylsilane at a ratio of 1:1.55, and then react at a temperature of 120°C under a platinum catalyst for 8 hours. After cooling down to 80°C, remove small molecules and unreacted silanes under reduced pressure to obtain intermediates containing acryloyloxy groups; then combine the intermediates containing epoxy groups obtained in the above steps with acryloyloxy The intermediate of the structure is mixed at a ratio of 1:1, and the mixture is mixed with silicone oil. The chemical formula of the silicone oil is:

[0031]

[0032] Where: R 1 : Methyl, Vinyl, Hydroxyl

[0033] R 2 : methyl, vinyl, hydrogen

[0034] After mixing at a ratio of 1:1.3, react at a tempera...

Embodiment 3

[0035] Embodiment Three : First, mix epoxy silane and vinyl silane with a ratio of 1:1.52, then react at a temperature of 155°C under a platinum catalyst for 4.3 hours, then cool down to 80°C, and remove small molecules and Unreacted silane, to obtain an intermediate containing an epoxy group structure; mix acryloyloxysilane and vinyl silane at a material ratio of 1:1.52, and then react at a temperature of 110°C under a platinum catalyst for 7 hours. After cooling down to 80°C, remove small molecules and unreacted silanes under reduced pressure to obtain intermediates containing acryloyloxy groups; then combine the intermediates containing epoxy groups obtained in the above steps with acryloyloxy The intermediate of the structure is mixed at a ratio of 1:1, and the mixture is mixed with silicone oil. The chemical formula of the silicone oil is:

[0036]

[0037] Where: R 1 : Methyl, Vinyl, Hydroxyl

[0038] R 2 : methyl, vinyl, hydrogen

[0039] After mixing at ...

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Abstract

The invention discloses an addition-type organic silicon rubber composite tackifier and a preparation method thereof. The addition-type organic silicon rubber composite tackifier is prepared in a way of grafting two types of polar groups (epoxy and acryloyl) to a Si-O chain of common organic silicon rubber. After being mixed, the addition-type organic silicon rubber composite tackifier and addition-type organic silicon rubber can be cured at 100-120 DEG C together with a base material so as to ensure that the adhesive strength of addition-type organic silicon rubber to an aluminum product can reach 2.6-2.8MPa, the adhesive strength of addition-type organic silicon rubber to copper can reach 1.6-1.8 MPa, the adhesive strength of addition-type organic silicon rubber to PC plastic can reach 1.6-1.8 MPa, and the adhesive strength of addition-type organic silicon rubber to a nylon base material can reach 1.8-2.0 MPa. The adhesive strength of the addition-type organic silicon rubber composite tackifier containing two types of polar groups (epoxy and acryloyl) is obviously higher than that of a tackifier containing a single polar group.

Description

technical field [0001] The invention relates to an addition-type silicone rubber tackifier, and relates to a tackifier for improving the adhesion between the addition-type silicone rubber and plastics and metal substrates and a preparation method thereof. In particular, it is more obvious to improve the bonding performance to the metal substrate - aluminum. Background technique [0002] It is known that addition-type silicone rubber has more prominent advantages than heat-vulcanized silicone rubber (HTV for short) and condensation-type silicone rubber (RTV for short), such as: small linear shrinkage, deep vulcanization, fast vulcanization speed, high mechanical strength, etc. . Therefore, it is widely used in automobile, electronics, power supply, LED and other industries. Addition-type silicone rubber has no polar groups on its molecular main chain, and its adhesion to substrates, especially plastic substrates and metal substrates, is poor after curing. It is known that ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/38C09J11/08
Inventor 文正华
Owner SHENZHEN FLOURISH ORGANOSILICONE MATERIAL CO LTD
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