필름

• Main Authors: KODANI TETSUHIRO, KOMATSU NOBUYUKI, HAZAMA TAKESHI, NAKAMURA HISAKO, YOKOTANI KOUJI, TATEMICHI MAYUKO, KANEMURA TAKASHI, MUKAI ERI, HIGAKI AKIO
• Format: Patent
• Language: Korean
• Published: 21.03.2018
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ELECTRICITY; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

우수한 내열성을 갖고 있고 저온에서의 유전율과 고온에서의 유전율의 차가 작은 필름을 제공한다. 주파수 1㎑, 30℃에서의 비유전율이 8 이상이고, 주파수 1㎑, 30℃에서의 비유전율 A와 주파수 1㎑, 150℃에서의 비유전율 B로부터 다음의 식에 따라 산출되는 변화율이 -8 내지 +8%인 것을 특징으로 하는 필름이다. 변화율(%)=(B-A)/A×100 The present invention provides a film having excellent heat resistance and a small difference between the permittivity at low temperatures and the permittivity at high temperatures. The present invention provides a film having a relative permittivity of 8 or more at a frequency of 1 kHz at 30°C, wherein the rate of change is - 8 to +8% as calculated from a relative permittivity A at a frequency of 1 kHz at 30°C and a relative permittivity B at a frequency of 1 kHz at 150°C according to the following formula: Rate of change % = B ˆ’ A / A × 100.