Papers by Keyword: Polystyrene Sphere

Abstract: A hierarchical zeolite was synthesized by self-assembly of ZSM-5 nano-crystals colloid and polystyrene spheres coated with cationic poly (diallyldimethylammonium chloride). The colloidial ZSM-5 nano-crystals were first bound onto the polyelectrolyte-modified PS by electrostatic attraction, followed by centrifugation to form PS/ZSM-5 close-packed composite. After being dried and calcined to remove the organic components, the hierarchical zeolite was obtained. The X-ray diffraction, scanning electron microscopy, transition electron microscopy and N2 adsorp-tion-desorption techniques were employed to characterize the hierarchical zeolite. The results showed that the material prepared by this method was well crystallized and possessed uniform ma-cropores interconnected in three dimensions through windows. Furthermore, the hierarchical zeolite was rather mechanically stable.

Abstract: Polymer-based conductive adhesive materials have become widely used in many electronic packaging interconnect applications. In this paper, a new kind of polymer-based conductive particle used in anisotropic conductive adhesive films (ACFs) is prepared. The preparation of the single scattered polystyrene spheres with the particle size of 3 microns around and the less than 5% dispersion coefficient is done successfully, and a layer of nickel is coated on the surface of polystyrene spheres using chemical plating method well.