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采用电子活化再生原子转移自由基聚合(AGET ATRP)法将甲基丙烯酸甲酯(MMA)接枝到竹粉(BF)表面,并采用哈克微量混合流变仪及旋转流变仪考察了竹粉接枝改性前后对竹粉/聚对苯二甲酸乙二醇酯-1,4-环己烷二甲醇酯(PETG)复合材料流变行为的影响。毛细管流变结果表明,竹粉/PETG复合材料属于假塑性流体,呈现剪切变稀的现象;应变扫描结果表明,与未改性竹粉/PETG复合材料体系相比,竹粉经接枝改性后其复合材料体系在更大的应变范围内属于线性弹性行为;频率扫描结果表明,竹粉的接枝改性处理有助于促进竹粉在PETG基体中的均匀分散。
The methyl methacrylate (MMA) was grafted onto the surface of bamboo powder (BF) by electron-activated regenerative atom transfer radical polymerization (AGET ATRP) method. The bamboo micro-rheometer and rotary rheometer were used to investigate the effect of bamboo Effect of Powder Graft Modification on Rheological Behavior of Bamboo Flour / Polyethylene Terephthalate - 1, 4 - Cyclohexanedimethanol (PETG) Composites. The results of capillary rheology show that bamboo powder / PETG composites belong to pseudo-plastic fluid and appear shear thinning phenomenon. Strain scanning results show that compared with unmodified bamboo powder / PETG composites, The composite system possesses linear elastic behavior in a wide range of strain. The results of frequency scanning show that graft modification of bamboo powder can promote the uniform dispersion of bamboo powder in PETG matrix.