Thermally conductive composition, thermally conductive sheet and method for producing same
A manufacturing method and technology of thermal conductivity, which are applied in heat exchange materials, chemical instruments and methods, films/sheets without carriers, etc., can solve the problems of resin interface peeling and low resilience, and prevent interface peeling and resilience. excellent effect
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[0069] Hereinafter, it demonstrates using an Example. This invention is not limited to an Example.
[0070]
[0071] The thermal conductivity of the thermally conductive composition is measured by Hot Disk (according to ISO 22007-2). The thermal conductivity measuring device 11 is as figure 1 As shown in A, the sensor 12 made of polyimide film is sandwiched between two samples 13a and 13b of the thermally conductive composition, and a constant power is applied to the sensor 12 to cause constant heat release. Appreciation is performed on thermal characteristics. The front end 14 diameter of sensor 12 is 7mm, as figure 1 As shown in B, the electrode has a double helix structure, and the electrode 15 for applying current and the electrode for resistance value (electrode for temperature measurement) 16 are arranged in the lower part. The thermal conductivity was calculated by the following formula (mathematical formula 1).
[0072] [mathematical formula 1]
[0073] [mathem...
Embodiment 1～3
[0106] (1) Adhesive polymer
[0107] Use 20 to 30% by weight of methylhydrogenpolysiloxane, 1 to 10% by weight of γ-glycidoxypropyltrimethoxysilane represented by the above chemical formula (Chemical formula 1), and 1 to 10% by weight of the above chemical formula (Chemical formula 2). 0.1 to 1% by weight of octamethylcyclotetrasiloxane, 1 to 10% by weight of carbon black, and a commercially available adhesive polymer comprising a silicone polymer.
[0108] The tensile shear bond strength of the adhesive polymer to the aluminum plate is as shown in Table 1.
[0109] (2) Base polymer
[0110] As the base polymer, a commercially available two-component room temperature curing silicone polymer was used. A base polymer component and a platinum-based catalyst were previously added to liquid A of the two-component room temperature curing silicone polymer, and a base polymer component and a crosslinking component were added to liquid B in advance.
[0111] The tensile shear bond s...
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