【摘要】 用旋转粘度计研究了改性羧甲基羟丙基纤维素(M-CMHPC)增稠聚醋酸乙烯(PVA)乳液体系的流变特性。与离子型羧甲基纤维素和非离子型羟乙基纤维素相比较,在实验的增稠剂浓度范围内,改性M-CMHPC增稠PVA乳液体系呈现非牛顿流体Bingham塑性流型,具有较明显的屈服值、塑性粘度和触变性。更多还原

【Abstract】 The rheological characterics of polyvinyl acetate (PVA)latex systems thickened with modified carboxymethyl hydroxypropyl cellulose(M-CMHPC) have been studied with rotational viscometer. The PVA latex systems thickened with M-CMHPC presented Non-Newtonian’s pattern of Bingham plastic flow, and had evidently’yield valle, plastic viscosity and thixo-tropic behaviour at 0.2~1.0 wt% of concentration compared with ionic carboxymethyl cellulose (CMC) and non-ionic hydroxyethyl cellulose (HEC) .更多还原