To provide a heat-resistant light-shielding sheet or film which is excellent in heat resistance, dimensional stability and antistatic performance in spite of a monolayer structure without laminating a matte layer or a conductive layer, which has high light-shielding property and low reflectance and which is suitable for a shutter blade, a diaphragm or the like of an optical instrument.
The heat-resistant light-shielding sheet or film is formed by using a black resin composition comprising a polyamide imide resin, a conductive filler having a dibutyl phthalate oil absorption of 400 ml/100 g or more, and an inorganic powder having an average particle diameter of 1 to 10 μm. The content percentages of the conductive filler and of the inorganic powder are 3 to 8 wt.% and 8 to 29 wt.%, respectively.
TADA KENTA
KURITA TOMOHARU
| JP2011184618A | 2011-09-22 | |||
| JPH09274218A | 1997-10-21 |
| WO2011145473A1 | 2011-11-24 |
Noriko Asano