JP2023508999A - 導電性ペースト - Google Patents
導電性ペースト Download PDFInfo
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- JP2023508999A JP2023508999A JP2022539398A JP2022539398A JP2023508999A JP 2023508999 A JP2023508999 A JP 2023508999A JP 2022539398 A JP2022539398 A JP 2022539398A JP 2022539398 A JP2022539398 A JP 2022539398A JP 2023508999 A JP2023508999 A JP 2023508999A
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Abstract
Description
A)弾性バインダー(A)を含む分散液を製造または提供するステップ、
B)分散液に導電性フィラー(B)を導入し、その際、導電性フィラー(B)は、以下の成分:少なくとも1つのビーズ状導電性フィラー(B1)、少なくとも1つのフレーク状導電性フィラー(B2)および少なくとも1つのロッド状導電性フィラー(B3)を含むものとするステップ。
Impranil DLU分散液(水中固形分60重量%のポリウレタン、バインダーA)を、バッチサイズに適したスピードミキサー容器にはかり入れる(11g)。次に、フィラー(B)の成分として、分散フィラー(Rhenofit(登録商標)CNT(フィラーB3)、5.5g)、C-Sperse(登録商標)またはBirla Conductex SC Ultra(登録商標)(フィラーB1、1.49g)から始め、次いで固体フィラー(eConduct CuまたはeConduct Glass(フィラーB2)、1.75g)を添加して木べらでざっと混ぜる。スピードミキサーにて2300rpmで1分間混合し、木べらでかき混ぜ、再度スピードミキサー(2300rpmで1分間)で混合する。このペーストをエラストマー(TPUフィルム)上に施与した後、60℃で2時間乾燥させる。
例1で説明した手順と同様に、本発明によるペースト(A、C、D、E)および本発明によらないペースト(F、G、H)を製造する。用いた量比率は、下表のとおりである。
本発明によるペーストおよび比較ペーストの電気抵抗を、4点測定により測定する。その結果を下表に示す。
Claims (15)
- 弾性バインダー(A)と導電性フィラー(B)とを含む導電性ペーストであって、前記導電性フィラー(B)が、次の成分:少なくとも1つのビーズ状導電性フィラー(B1)、少なくとも1つのフレーク状導電性フィラー(B2)および少なくとも1つのロッド状導電性フィラー(B3)を含むことを特徴とする、導電性ペースト。
- 前記ビーズ状フィラー(B1)は、ISO 21501-2:2019-11に準拠して測定された、最大200μm、好ましくは0.02μm~200μm、さらにより好ましくは最大100μm、例えば0.02μm~100μm、さらにより好ましくは0.02μm~50μm、特に0.02μm~10μmの平均粒子径を有する、請求項1記載の導電性ペースト。
- 前記導電性ペーストの全重量に対する前記ビーズ状フィラー(B1)の割合は、0.1~50重量%、さらにより好ましくは1~15重量%、さらにより好ましくは1~10重量%、さらにより好ましくは1~8重量%、特に1~5重量%である、請求項1または2記載の導電性ペースト。
- 前記フレーク状フィラー(B2)のアスペクト比は、少なくとも1/10でかつ1/10^6未満である、請求項1から3までのいずれか1項記載の導電性ペースト。
- 前記フレーク状フィラー(B2)は、ISO 21501-2:2019-11による、最大150μm、例えば0.02~150μm、さらにより好ましくは最大100μm、例えば2μm~100μm、特に5~80μmの平均粒子径を有する、請求項1から4までのいずれか1項記載の導電性ペースト。
- 前記導電性ペーストの全重量に対する前記フレーク状フィラー(B2)の割合は、0.5~50重量%、さらにより好ましくは5~40重量%、特に10~25重量%である、請求項1から5までのいずれか1項記載の導電性ペースト。
- 前記ロッド状フィラー(B3)は、少なくとも0.1、例えば1/10~1/10^8、特に10^2~10^8の平均アスペクト比を有する、請求項1から6までのいずれか1項記載の導電性ペースト。
- 前記導電性ペーストの全重量に対する前記ロッド状フィラー(B3)の割合は、0.01~10重量%、さらにより好ましくは0.01~5重量%、特に0.1~3重量%である、請求項1から7までのいずれか1項記載の導電性ペースト。
- 前記導電性ペーストの全重量に対する前記フィラー(B)の割合は、0.03重量%~30重量%、さらにより好ましくは0.03重量%~25重量%、特に0.03重量%~20重量%である、請求項1から8までのいずれか1項記載の導電性ペースト。
- 前記導電性ペーストの全重量に対する前記バインダー(A)の割合は、50重量%~99重量%、さらにより好ましくは60重量%~80重量%、特に65重量%~80重量%である、請求項1から9までのいずれか1項記載の導電性ペースト。
- 前記弾性バインダー(A)は、熱可塑性エラストマーを含み、前記熱可塑性エラストマーは、好ましくは、シリコーン、ウレタン、エポキシド、アミド、エステルまたはそれらの混合物からなる群から選択される、請求項1から10までのいずれか1項記載の導電性ペースト。
- 規格EN ISO 527-1(2012年2月)に準拠して測定された延伸率が、少なくとも30%、例えば30%~400%、さらにより好ましくは少なくとも40%、例えば40%~300%、特に少なくとも60%、例えば60%~150%、さらにより好ましくは80%~150%である、請求項1から11までのいずれか1項記載の導電性ペースト。
- エラストマー基材に施与されている、請求項1から12までのいずれか1項記載の導電性ペースト。
- エラストマー基材に施与するための、請求項1から13までのいずれか1項記載の導電性ペーストの使用。
- 導電性ペーストの製造方法であって、以下の方法ステップ:
a)弾性バインダー(A)を含む分散液を製造または提供するステップ、
b)前記分散液に導電性フィラー(B)を導入し、その際、前記導電性フィラー(B)は、以下の成分:
少なくとも1つのビーズ状導電性フィラー(B1)、
少なくとも1つのフレーク状導電性フィラー(B2)および
少なくとも1つのロッド状導電性フィラー(B3)
を含むものとするステップ
を含む、方法。
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