Table 1

Particle size composition，oil absorption value，activation index and oil phase dispersion stabilityof the original samples"

Fig.1

SEM images of ground calcium carbonateC525（a） and C1000（b）"

Table 2

Test results of oil absorption value of C525samples modified by different modifiers"

Table 3

Test results of oil absorption value of C1000samples modified by different modifiers"

Table 4

Test results of activation index of C525 samples modified by different modifiers"

Table 5

Test results of activation index of C1000 samples modified by different modifiers"

Fig.2

Variation law of the oil absorption value of C525（a）and C1000（b） modified samples with the amount of modifiers"

Fig.3

Variation law of the activation index of C525（a） and C1000（b） modified samples with the amount of modifiers"

Fig.4

Variation of dispersion stability of modified ground calcium carbonate C525 samples with the amount of modifiers"

Fig.5

Variation of dispersion stability of modified ground calcium carbonate C1000 samples with the amount of modifiers"

Fig.6

Variation of the pure water wetting contact angleof modified ground calcium carbonate C525 sampleswith the amount of modifiers"

Fig.7

Variation of the pure water wetting contact angle ofmodified ground calcium carbonate C1000 sampleswith the amount of modifiers"

Fig.8

FT-IR spectra of（a） C525 and（b） C1000 modified ground calcium carbonate samples"

Fig.9

TG curves of（a） C525 and（b） C1000 modifiedground calcium carbonate samples"