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Primer for bonding of addition type silicone rubber and dry type transformer material

A technology of primer and silane coupling agent, which is applied in the direction of adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the problem of inapplicable bonding between addition-type silicone rubber and dry-type transformers, and achieve enhanced Adhesive effect, effect of promoting hydrolysis

Active Publication Date: 2016-04-20
GUANGDONG BIOMAX SIANDF NEW MATERIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this adhesion-promoting primer is only suitable for the bonding of silicone potting colloids (compositions of vinyl siloxane, vinyl silicone resin, organosiloxane containing Si-H bonds, etc.) and light-emitting diodes.
[0008] The primer disclosed in the above-mentioned patent is not suitable for the bonding of addition-type silicone rubber and dry-type transformers

Method used

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  • Primer for bonding of addition type silicone rubber and dry type transformer material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Mix and stir 8 parts by mass of silicone resin and 100 parts by mass of ethanol at room temperature. After the silicone resin is completely dissolved, add 7 parts by mass of vinyltrimethoxysilane, 3 parts by mass of (3-methacryloyloxypropane base) trimethoxysilane, 5 parts by mass of (3-glycidoxypropyl) trimethoxysilane and 25 parts by mass of ethyl orthosilicate, mix evenly to obtain the primer. Wherein, the silicone resin structure is as follows:

[0050] [(CH 3 ) 3 SiO 1 / 2 ] 5 [H(CH 3 ) 2 SiO 1 / 2 ] 10 [HOSiO 3 / 2 ] 5 [SiO 4 / 2 ] 20

[0051] Apply the primer above to the surface of the dry-type transformer material, let it dry at room temperature for half an hour, then apply and mold silicone rubber (Dow Corning HV1551 / 55P), and cure at 150°C for half an hour. After cooling, tear off the silicone layer by hand to observe its peeling state on the surface of the substrate.

Embodiment 2

[0053] Mix and stir 20 parts by mass of silicone resin and 100 parts by mass of ethanol at room temperature. After the silicone resin is completely dissolved, add 3 parts by mass of vinyltrimethoxysilane, 8 parts by mass of (3-acryloyloxypropyl) Trimethoxysilane, 6 parts by mass of (3-glycidoxypropyl) triethoxysilane, 35 parts by mass of ethyl orthosilicate and 0.5 part by mass of glacial acetic acid were mixed uniformly to obtain the primer.

[0054] Wherein, the silicone resin structure is as follows:

[0055] [(CH 3 ) 3 SiO 1 / 2 ] 3 [H(CH 3 ) 2 SiO 1 / 2 ] 15 [HOSiO 3 / 2 ] 2 [SiO 4 / 2 ] 25

[0056] Apply the primer above to the surface of the dry-type transformer material, let it dry at room temperature for half an hour, then apply and mold silicone rubber (Dow Corning HV1551 / 55P), and cure at 150°C for half an hour. After cooling, tear off the silicone layer by hand to observe its peeling state on the surface of the substrate.

Embodiment 3

[0058] Mix and stir 13 parts by mass of silicone resin and 100 parts by mass of isopropanol at room temperature. After the silicone resin is completely dissolved, add 5 parts by mass of vinyltriethoxysilane, 6 parts by mass of (3-methylpropene Acyloxypropyl) trimethoxysilane, 4 parts by mass of (3-glycidoxypropyl) trimethoxysilane, 30 parts by mass of propyl orthosilicate and glacial acetic acid of 0.2 parts by mass, mix evenly to get Primer.

[0059] Wherein, the silicone resin structure is as follows:

[0060] [H(CH 3 ) 2 SiO 1 / 2 ] 15 [HOSiO 3 / 2 ] 4 [SiO 4 / 2 ] 30

[0061] Apply the primer above to the surface of the dry-type transformer material, let it dry at room temperature for half an hour, then apply and mold silicone rubber (Dow Corning HV1551 / 55P), and cure at 150°C for half an hour. After cooling, tear off the silicone layer by hand to observe its peeling state on the surface of the substrate.

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Abstract

The invention discloses a primer for bonding of addition type silicone rubber and a dry type transformer material. The primer is prepared from 8-20 parts of silicon resin, 3-7 parts of vinyl silane coupling agent, 3-8 parts of acryloyloxy silane coupling agent, 4-8 parts of epoxy silane coupling agent, 25-35 parts of silicate ester compound, 0-0.5 part of glacial acetic acid and 100 parts of organic solvent. By means of the primer, silicon steel sheets, DMD insulation paper, NOMEX insulation paper, copper foil, silk-covered wires and glass fiber gridding cloth materials in the dry type transformer and the addition type silicone rubber are firmly bound, and the preparation process is simple.

Description

technical field [0001] The invention relates to a primer, in particular to a primer suitable for bonding addition-type silicone rubber and dry-type transformer materials. Background technique [0002] Addition silicone rubber is a silicone material with a crosslinked network formed by a hydrosilylation reaction. Due to the unique chemical structure of silicone rubber, it has excellent high and low temperature resistance, excellent weather resistance and electrical insulation, and has been widely used in the electronic power industry. However, addition-type silicone rubber is generally difficult to bond due to its saturated molecular structure, high chemical inertness, and low surface energy. In order to enhance the adhesion between addition-type silicone rubber and the contact substrate, it is usually necessary to pre-prime the substrate. Due to the diversity of contact substrates and the continuous improvement of adhesive performance requirements, the development of corre...

Claims

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Application Information

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IPC IPC(8): C09J183/06C09J11/06C08G77/16
CPCC08G77/16C08K5/00C08K5/5415C08K5/5425C08K5/5435C09J11/06C09J183/04
Inventor 黄振宏陈文标陈志亮
Owner GUANGDONG BIOMAX SIANDF NEW MATERIAL CO LTD
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