POWDER COATING

To provide a powder coating which can provide a coating film having an excellent heat dissipating property while suppressing deterioration of a coating property.SOLUTION: Provided is a powder coating which is a coating for forming a cured material and is constituted of fine pulverized product of a h...

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Bibliographic Details
Main Authors SASAKI FUMIYUKI, MATSUMOTO YUKI
Format Patent
LanguageEnglish
Japanese
Published 04.07.2023
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Summary:To provide a powder coating which can provide a coating film having an excellent heat dissipating property while suppressing deterioration of a coating property.SOLUTION: Provided is a powder coating which is a coating for forming a cured material and is constituted of fine pulverized product of a heat-curable composition which comprises: (A) an epoxy compound having an epoxy equivalent in a range of 200 g/eq. to 1000 g/eq.; (B) a curing agent which reacts with (A); and (C) an insulating inorganic filler which has a heat-transfer coefficient of 10 W/(m K) or more, a particle diameter (d50) of 10 μm to 60 μm, and a particle diameter (d10) of 3 μm to 40 μm, where (C) is contained in a range of 72 mass% to 85 mass % in the whole composition.SELECTED DRAWING: None 【課題】 塗装性の悪化を抑制しつつ、優れた放熱性を塗膜に付与し得る粉体塗料を提供する。【解決手段】 以下では、(A):200g/eq以上1000g/eq以下の範囲にエポキシ当量を有するエポキシ化合物、(B):(A)と反応する硬化剤、(C):10W/(m・K)以上の熱伝導率、10μm以上60μm以下の粒子径(d50)、および3μm以上40μm以下の粒子径(d10)、を有する絶縁性無機充填剤、とする。このとき、本発明に係る粉体塗料は、硬化物を形成するための塗料であって、熱硬化性組成物の微粉砕物で構成してあり、熱硬化性組成物は、(A)、(B)、および(C)を含み、(C)は、組成物全体中に、72質量%以上85質量%以下の範囲で含有されていることを特徴とする。【選択図】 なし
Bibliography:Application Number: JP20210207999