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Uv-thickening thermally conductive silicone grease composition

A technology of silicon grease and ultraviolet light, which is applied in the direction of lubricating compositions, heat exchange materials, base materials, etc., can solve the problems of residual thermally conductive silicone compositions, difficulties in single-liquid storage, and inability to ensure heat dissipation paths, etc. problems, achieve good preservation, high shape retention, and excellent recovery

Inactive Publication Date: 2017-05-24
SHIN ETSU CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this addition one-component thermally conductive silicone composition also has problems
This has the following problems: When the viscosity of the addition single-liquid thermally conductive silicone composition is further reduced, fluidity occurs, and it is spread on the electronic component immediately after being discharged, and it cannot be used when the gap between the electronic component and the cooling substrate is wide. Make sure the heat dissipation path
[0010] As for the above-mentioned other curing means, an organopolysiloxane gel composition using a platinum complex curing catalyst that becomes photoactive by ultraviolet rays has been proposed. Although there is a description of adding an inorganic filler as an optional component, there is no There is no description about the addition amount, and there is no description about thermal conductivity, and there are also difficulties in storage stability in a single-liquid form (Japanese Patent No. 3865638: Patent Document 10)

Method used

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  • Uv-thickening thermally conductive silicone grease composition
  • Uv-thickening thermally conductive silicone grease composition
  • Uv-thickening thermally conductive silicone grease composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～7、 comparative example 1

[0158]The above-mentioned (A)-(H) components were mixed in the compounding quantity shown in Table 1 as follows, and the composition of Examples 1-7 and the comparative example 1 were obtained. That is, take (A), (D), and (E) components with the compounding amounts shown in Table 1, and put them into a 5-liter gate mixer (manufactured by Inoue Seisakusho Co., Ltd., trade name: 5-liter Planetary mixer), degassed and heated at 150°C for 2 hours. Then, cool to normal temperature, add (B) and (F) components, and mix until uniform at room temperature. (C) component was further added, degassed and mixed at room temperature until uniform. Component (H) is also added as needed, and it stirs until it becomes uniform at room temperature. The composition thus obtained was evaluated for viscosity, hardness after curing, thermal conductivity, shape retention, and storage stability by the methods shown below. The results are also listed in Table 1. In Comparative Example 1, various prop...

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Abstract

A UV-thickening thermally conductive silicone grease composition: which has (A) an organopolysiloxane, the viscosity at 25 DEG C of which is 50-100,000 mPa*s and which contains at least one alkenyl group in a single molecule, (B) an organohydrogen polysiloxane, a single molecule of which contains a hydrogen atom directly bonded to at least two silicon atoms, (C) a photoactive platinum complex curing catalyst, and (D) a thermally conductive filler with a thermal conductivity of at least 10 W / m*DEG C as essential components; and the viscosity at 25 DEG C of which is 30-800 Pa*s when measured at a 10 rpm rotation rate using a Malcom viscometer. For this UV-thickening thermally conductive silicone grease composition, shape-retaining properties at low viscosity are high, deep curing properties can be adjusted using the UV irradiation dose, and the composition after being thickened by irradiating UV rays does not become hard but sets so as to be malleable.

Description

technical field [0001] In particular, the present invention relates to a one-component ultraviolet ray that is interposed between a heat-generating member (heat-generating body) such as an electric or electronic component, and a heat-radiating member (cooling body), and is suitable for transferring heat generated by the heat-generating member to the heat-radiating member. Thickened thermally conductive silicone grease composition. Background technique [0002] In the main systems such as engine control, power system, and air conditioning control in the conveyor, the content of control is refined, and the systems required for control are also increasing. Along with this, the number of mounted electronic control units (ECUs) has also increased year by year, and the number of electronic components mounted inside tends to increase. In order to efficiently transfer the heat generated by various electronic components and parts with different heights to the aluminum alloy die-cast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08K3/00C08K5/07C08K9/00C08L83/05C08L83/06C09K5/00C10M107/50C10M125/26C10M139/02C10M139/04C10N20/02C10N30/00C10N40/14C10N50/10
CPCC10M139/02C10M139/04C08K3/00C08K5/07C10M107/50C10M125/26C08K9/00C08L83/06C09K5/14C08K3/36C08L83/04C08L2203/20C08L2205/02
Inventor 岩田充弘
Owner SHIN ETSU CHEM CO LTD
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