Preparation of Self-metallization Conductive Silverd Polyimide Films and Apply to Electromagnetic Interference

• Main Authors: Wan-Xuan Lin, 林宛萱
• Other Authors: Chih-Chao Yen
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/54187598669694879894

碩士 === 明新科技大學 === 化學工程與材料科技系 === 99 === The focus of this paper is the fabrication of conductive silvered polyimide films by surface modification and in situ self-metallizing procedure. The surface of polyimides that is chemically modified using potassium hydroxide(KOH) to form potassium polyamate in the modified layer through imide ring-cleavage reactions. Then the silver polyamate could be formed by silver(I) ion change with potassium ion in aqueous silver nitrate(AgNO3) solution. The final polyimide was formed by using thermal curing re-cycloimidized the polyamic acid. During the thermal cycle, reduction yields silver atoms and conductive surfaces without the addition of an external reducing agent. The potassium hydroxide treatment time, silver ion exchange time and re-imidization temperature on the effects of conductivity and EMI shielding effectiveness were investigated in this research, and have the excellent shielding effectiveness of EMI.