| 摘要 |
<p>Filler-containing polytetrafluoroethylene granular powder, which has a large apparent density, a small average particle size, a narrow particle size distribution, a superior powder flowability, a small electrostatic charge and gives a molded product having a superior tensile strength and elongation a high degree of whiteness and a low surface roughness, and a process for preparing the same. The granulation is carried out by stirring, in water, of a PTFE powder and a filler in the presence of an organic liquid forming liquid-liquid interface with water and an anionic surfactant and/or nonionic surfactant such as a segmented polyalkylene glycol having a hydrophobic segment and hydrophilic segment and deagglomerating of the powder. <IMAGE></p> |
