微粒子化ドロマイト-ポリプロピレンおよびポリ塩化ビニル樹脂系複合材料の特性
フィラーの表面処理効果
1993 年 1993 巻 247 号 p. 411-419
詳細
1993 年 1993 巻 247 号 p. 411-419
The effect of the surface treatment of finely pulverized dolomite fillers on the physical properties of PP and PVC composites was studied, and the following results were obtained.
The tensile strength of the composites mixed with the dolomite was higher than that of the composites mixed with calcium carbonate (Fig. 2). The breaking tensile elongation of the sample No.2 was remarkably high among PP/dolomite series, and it was improved by the surface treatment (Fig.3 and 4). The izod impact strength of the sample No.2 among the PP/dolomite series was also improved by the surface treatment with every surface treating agent (Fig.5 and 6). The deflection temperature under the load in the dolomite and calcium carbonate serirs was higher than that of the pure resins, but no effect of the surface treatment was observed (Table 3). The fluidity of the dolomite and calcium carbonate serirs was lower than that of the pure resins, but it was improved by the surface treatment of the fillers (Fig.7, 8, 9 and 10). Although the dispersibility of the PP/dolomite series (untreated; No.2) and PVC/dolomite series (untreated; No.2) was good, further improvement was observed by the surface treatment (Fig.11). The results obtained indicated that the finely pulverized dolomite is useful as a filler for organo-polymeric composites.
