| 摘要 |
PURPOSE:In a case of making an artificial marble with excellent mechanical properties, especially outstanding in flexural and impact strength, to improve interfacial adhesion between matrix polymer and filler, by using a specific filler bonded with an organic material. CONSTITUTION:At least one radical-polymerizable vinyl monomer (e.g., methy methacrylate) is polymerized in the presence of a carboxylic acid monomer of formula I or II [wherein R1-2 are each H, 1-15C alkyl, COOY (wherein Y is H, NH4 or an alkali metal atom), halogen or (substutited) phenyl; R3-5 are each H, 1-15C alkyl, halogen or (substituted) phenyl; and X is H, NH4 or an alkali metal atom] in an aqueous medium in which an inorganic compound (e.g., Al2O3) is dispersed, and in the presence of a radical initiator (e.g., benzoyl peroxide) having a decomposition temperature of 40-100 deg.C at 10-100 deg.C for 30min-15hr, followed by drying at 10-300 deg.C to obtain an organic bonding filler. For making artificial marble, filler, a vinyl monomer (e.g., methyl methacrylate), and if desired at least one coupling agent selected from the group comprising of silane, titanate, and aluminate coupling agents and the like in an amount of a 0.01-10wt.%, are blended, and polymerized. |
