几种填料的性质 Table 4. General physical properties of typical filler pigments Formula AL,,010(OH) Mg] Si,O10(0H)2 Caco acO Trigonic, Scalenohedral, Crystal structure hexagonal lamellae rhombohedral rhombohedral 2 2.8 2.7 Hardness(Mohs scale) 225 115 Brightness, >81 >82 chalk: 80-90 >93 marble: 85-95 Particle size distribution beow10μm% 94 84 98 5m,% 75 45 90 100 <2pm% 70 Speific surface area(BED), m/g.10 potental, mV 24(H7-19(H9)|26(0H9) +5(pH9) Abrasion(AT 1000), g/m bronze wire 45 Ignition loss, 600 11 02 9250 12 63 42 pH 制浆造纸原理与工程制浆造纸原理与工程 几种填料的性质