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Double-component organic silica gel for packaging of large power IGBT (insulated bipolar translator) and preparation method thereof

A two-component, high-power technology, applied in the direction of adhesives, adhesive additives, polymer adhesive additives, etc., can solve the problems of high volatile content and low dielectric strength, and achieve low volatile content, good stability, The effect of simple preparation method

Active Publication Date: 2013-04-17
ZHUZHOU TIMES ELECTRIC INSULATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the IGBT silicone gel on the market has high volatile content and low dielectric strength, and is generally only suitable for devices below 3500V, but there is no report on the silicone gel required for IGBT modules above 6000V and 6000V.

Method used

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  • Double-component organic silica gel for packaging of large power IGBT (insulated bipolar translator) and preparation method thereof
  • Double-component organic silica gel for packaging of large power IGBT (insulated bipolar translator) and preparation method thereof
  • Double-component organic silica gel for packaging of large power IGBT (insulated bipolar translator) and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Accurately weigh 1000g of vinyl-terminated silicone oil with a viscosity of 800mpa.s and a mass fraction of vinyl of 0.35%, and 2.0g of a complex of chloroplatinic acid-vinylsiloxane with a concentration of 5000ppm, and add them to the planetary mixer. Under the conditions of 1000r / min and 5-20r / min revolution, stir at room temperature for 0.5-1h to obtain component A, pack and place it for use; accurately weigh 850g of vinyl-terminated silicone oil with a viscosity of 800mpa.s and a vinyl mass fraction of 0.35%. 193g of a chain extender with a viscosity of 30cst, 7.5g of a crosslinking agent with a viscosity of 65cst, 2.0g of 1-ethynylcyclohexanol, and 0.5g of dibutylhydroxytoluene were added to the planetary mixer in turn, and the rotation speed was 200~1000r / min, revolution speed 5-20r / min, stirring at room temperature for 0.5-1h, to obtain component B, packaged and placed for use.

[0026] Among them, the terminal vinyl silicone oil is molecularly distilled for 3 h...

Embodiment 2

[0031] Accurately weigh 1000g of vinyl-terminated silicone oil with a viscosity of 1000mpa.s and a mass fraction of vinyl of 0.3%, and 2.0g of a complex of chloroplatinic acid-vinylsiloxane with a concentration of 5000ppm, and add them to the planetary mixer. Under the conditions of 1000r / min and 5-20r / min revolution, stir at room temperature for 0.5-1h to obtain component A, pack and place it for use; accurately weigh 700g of vinyl silicone oil with a viscosity of 1000mpa.s and a vinyl mass fraction of 0.3%. Add 290g of chain extender with a viscosity of 40cst, 10.2g of crosslinking agent with a viscosity of 65cst, 2.0g of 1-ethynylcyclohexanol, and 0.5g of dibutylhydroxytoluene into the planetary mixer in turn, and at a rotation speed of 200~1000r / min and a revolution speed of 5-20r / min, stir at room temperature for 0.5-1h to obtain component B, which is packaged and placed for use.

[0032] Among them, the terminal vinyl silicone oil is molecularly distilled for 3 hours at...

Embodiment 3

[0037] Accurately weigh 1000g of vinyl-terminated silicone oil with a viscosity of 1000mpa.s and a vinyl mass fraction of 0.30%, and 2.0g of a chloroplatinic acid-vinylsiloxane complex with a concentration of 5000ppm, and add them to the planetary mixer. Under the conditions of 1000r / min and 5-20r / min revolution, stir at room temperature for 0.5-1h to obtain component A, pack and place it for use; accurately weigh 800g of vinyl-terminated silicone oil with a viscosity of 1000mpa.s and a vinyl mass fraction of 0.30%. , 194g of chain extender with a viscosity of 50cst, 6.0g of a crosslinking agent with a viscosity of 65cst, 2.0g of 1-ethynylcyclohexanol, and 0.5g of dibutylhydroxytoluene were added to the planetary mixer in sequence, and the rotation speed was 200~1000r / min, revolution speed 5-20r / min, stirring at room temperature for 0.5-1h, to obtain component B, packaged and placed for use.

[0038] Among them, the terminal vinyl silicone oil is molecularly distilled for 3 h...

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Abstract

The invention discloses a double-component organic silica gel for packaging of a large power IGBT (insulated bipolar translator) and a preparation method thereof. The organic silica gel is prepared by mixing a component A and a component B, wherein the component A is prepared by mixing the following components in parts by weight: 100 parts of vinyl silicone oil and 0.02-1 parts of platinum catalyst, the component B is prepared by mixing the following components in parts by weight: 70-90 parts of vinyl silicone oil, 10-30 parts of chain extender (end of which contains hydrogen silicone oil), 0.5-5 parts of cross-linking agent (side chain of which contains hydrogen silicone oil), 0.1-1 part of inhibitor, and 0.05-0.5 parts of antioxygen. When the double-component organic silica gel is used, the component A and the component B are stirred and mixed uniformly according to weight ratio of 1 to 1 so as to be solidified to obtain the organic silica gel. The organic silica gel takes silicone oil of high purity as raw material, and has good heat stability, low volatile matter, and high dielectric strength, thus meeting the use requirement of a large power IGBT module.

Description

technical field [0001] The invention relates to the technical field of silicone gel, in particular to a two-component silicone gel for encapsulating high-power IGBTs and a preparation method thereof, which can be used for the encapsulation of IGBT modules above 6000V. Background technique [0002] With the increasingly sharp contradiction of power demand, the development and application of new power electronic devices has achieved rapid development, and IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) is one of the mainstream devices of new power electronic devices. Simply put, IGBT is a device that turns direct current into controllable alternating current. It has the advantages of high frequency, high voltage, and high current. It has a wide range of uses, especially high-power IGBT. Devices, traction drives, lighting circuits and other fields have been widely used. [0003] Silicone gel is widely used in the potting and bonding of electronic co...

Claims

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Application Information

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IPC IPC(8): C09J183/07C09J11/08
Inventor 丁娉赵慧宇唐毅平姜其斌曾智李鸿岩黎勇
Owner ZHUZHOU TIMES ELECTRIC INSULATION
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