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Magnetic conductive type organosilicone pouring sealant and preparation method thereof

A silicone potting, magnetic permeability technology, applied in the direction of adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the problem of electromagnetic radiation cannot be effectively shielded in places without magnetic permeability and electromagnetic waves, etc. Achieve the effect of improving magnetic permeability, shielding electromagnetic radiation, and improving magnetic properties

Inactive Publication Date: 2015-11-25
DONGGUAN XINXING ORGANIC SILICON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this patent, like most silicone potting adhesives, does not have magnetic conductivity, and cannot effectively shield electromagnetic radiation in places where electromagnetic waves are easily leaked, such as the seams and pores of electronic components.

Method used

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  • Magnetic conductive type organosilicone pouring sealant and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A magnetically conductive silicone potting compound, made of component A and component B with a mass ratio of 1:1, component A is composed of the following components by weight: 100 parts of vinyl silicone oil, nano-zinc ferrite 17 parts, 9 parts of silicon dioxide, 4.5 parts of aluminum hydroxide, 15 parts of A1511, 0.7 parts of methyl butynol, 4 parts of allyl glycidyl ether, 7.5 parts of PPS, 2.5 parts of hydrogen silicone oil, 2.4 parts of carbon black ; Component B consists of the following components by weight: 100 parts of vinyl silicone oil, 1.8 parts of chloroplatinic acid.

[0030] The steps of its preparation method are as follows:

[0031] (1) Add nano-zinc ferrite into the acetic acid solution with a mass fraction of 12%, stir and disperse at room temperature for 40 minutes, add A151 with a mass of 1.5% nano-zinc ferrite, heat up to 90°C and stir for 20 hours, stop stirring and keep warm After 1 hour, filter the reacted solution, wash the filter cake with ...

Embodiment 2

[0036] A magnetically conductive silicone potting compound, made of component A and component B with a mass ratio of 1:1, component A is composed of the following components by weight: 100 parts of vinyl silicone oil, nano-zinc ferrite 19 parts, fumed silica 9.5 parts, aluminum hydroxide 4.4 parts, A1511.4 parts, methyl butynol 0.8 parts, allyl glycidyl ether 3.5 parts, PPS 7.7 parts, hydrogen silicone oil 2 parts, 2.5 parts of carbon black; component B consists of the following components by weight: 100 parts of vinyl silicone oil, 2 parts of chloroplatinic acid.

[0037] The steps of its preparation method are as follows:

[0038] (1) Add nano-zinc ferrite into the acetic acid solution with a mass fraction of 12%, stir and disperse at room temperature for 40 minutes, add A151 with a mass of 1.5% nano-zinc ferrite, heat up to 90°C and stir for 20 hours, stop stirring and keep warm After 1 hour, filter the reacted solution, wash the filter cake with deionized water and aceton...

Embodiment 3

[0043]A magnetically conductive silicone potting compound, made of component A and component B with a mass ratio of 1:1, component A is composed of the following components by weight: 100 parts of vinyl silicone oil, nano-zinc ferrite 20 parts, 10 parts of silicon dioxide, 5 parts of aluminum hydroxide, 1.5 parts of A151, 0.6 parts of methyl butynol, 3 parts of allyl glycidyl ether, 7.6 parts of PPS, 4.5 parts of hydrogen silicone oil, carbon black 2 parts; component B consists of the following components by weight: 100 parts of vinyl silicone oil, 1.6 parts of chloroplatinic acid.

[0044] The steps of its preparation method are as follows:

[0045] (1) Add nano-zinc ferrite into the acetic acid solution with a mass fraction of 12%, stir and disperse at room temperature for 40 minutes, add A151 with a mass of 1.5% nano-zinc ferrite, heat up to 90°C and stir for 20 hours, stop stirring and keep warm After 1 hour, filter the reacted solution, wash the filter cake with deionize...

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Abstract

The invention provides magnetic conductive type organosilicone pouring sealant. The magnetic conductive type organosilicone pouring sealant is prepared from a component A and a component B, wherein the mass ratio of the component A to the component B is 1:1. The component A is composed of, by weight, 100 parts of vinyl silicone oil, 15-20 parts of nanometer zinc ferrite, 8-10 parts of reinforcing agent, 3-5 parts of fire retardant, 1-1.5 parts of coupling agent, 0.5-1 part of inhibitor, 3-4 parts of bulking agent, 7-8 parts of PPS, 2-5 parts of cross-linking agent and 1-3 parts of colorant. The component B is composed of, by weight, 100 parts of vinyl silicone oil and 1-2 parts of catalyst. The invention further provides a preparation method of the organosilicone pouring sealant. The organosilicone pouring sealant has good magnetoconductivity and can effectively shield electromagnetic radiation.

Description

Technical field: [0001] The invention relates to a silicone potting glue, in particular to a magnetically conductive silicone potting glue and a preparation method thereof. Background technique: [0002] Silicone potting glue refers to a type of electronic potting glue made of silicone rubber, including one-component silicone potting glue and two-component silicone potting glue. Silicone potting adhesives perform very well in terms of shockproof performance, electrical performance, waterproof performance, high and low temperature resistance, and anti-aging performance. , There are great differences in the adhesion and adhesion performance and hardness of different materials, and some functional fillers can also be added to give it the performance of electrical conductivity, thermal conductivity and magnetic conductivity. The mechanical strength of silicone potting glue is generally poor, and it is precisely because of this property that it can be "breakable" for easy mainte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/07C09J181/02C09J183/05C09J11/04C09J11/06
Inventor 吴细飞
Owner DONGGUAN XINXING ORGANIC SILICON TECH
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