| 摘要 |
PURPOSE: A resin additive obtained by subjecting inorganic particles of silica or alumina is provided. CONSTITUTION: An inorganic particles for preparing the resin additive include silica salts such as silica, anhydrous silica, silica gel, talc, clay, mica aluminum silicate and kaolinite, alumina and salts thereof such as aluminates. In addition thereto, inorganic substances staying in a glass state, that is, glass can also be used as an inorganic material. Various materials such as oxide glass, particularly silicate glass, powder of glass fiber, glass beads, glass balloon and fly ash can be used. Further, carbon and powder of carbon fiber can be used as well for the inorganic particles. Among them, silica powder is produced in nature and therefore is excellent in profitability, so that it is particularly preferably used. The particle size and form of the inorganic particles used shall not specifically be restricted and are suitably selected and used according to the kind and the use purposes thereof. |
