Studying The Dispersity of Modified Barium Titanate Nanopowder in PTFE Suspension and Its Bonding to PI Substrate

• Main Authors: HUANG, YAN-WEI, 黃彥惟
• Other Authors: SU, YUAN-YUAN
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/43n77u

碩士 === 國立臺北科技大學 === 化學工程與生物科技系化學工程碩士班 === 107 === In recent years, the electronic industry has developed rapidly, especially in wireless networks and satellite communication systems. In response to the future needs of electronic products, signal transmission is moving towards high-frequency and high-quality trend. Therefore, the development of ceramic nanopowder/polymer composites with high dielectric constant and low dielectric loss applied to high-frequency PCB is the research objective of this paper. In this study, The uniform dispersion of barium titanate powder modified by (N-[3-(Trimethoxysilyl)propyl]aniline) in polytetrafluoroethylene (PTFE) by adding sodium hexametaphosphate (SHMP) as an anionic dispersant and hydroxypropylmethylcellulose (HPMC) as a thickener was discussed. The experiment was divided into two parts: PTFE mixed modified and unmodified barium titanate suspension. The dispersion and sedimentation behavior of the suspension were studied in depth from the particle size, zeta potential, viscosity and sedimentation experiments. Four preferred groups of PTFE mixed barium titanate suspensions were coated on polyimide substrate film, and then it was sintered at high temperature. The surface morphology of the composites was analyzed by SEM. It was shown that the modified barium titanate mixed PTFE suspension coated on the PI film has stronger adhesion. This stronger adhesion is ascribed to the functional group of modified barium titanate.