| 3 | The Effects of Dispersed Phase Morphology Induced by Flow on the Bulk Viscosity of HDPE/PA Blends显示文摘The apparent shear viscosity (ηa) of a blend composed of 97 wt % nigh-density polyethylene (HDPE) and 3 wt % polyamide (PA-66) was measured by capillary rheometry at different shear rates, below, near and above the melting point of PA-66, i.e. 240℃, 260℃and 280℃, respectively. At 260℃and a high shear rate,ηa of the blend reduced abnormally; and at 260℃, was lower than that at 280℃. The images of etched surface of extrudate observed by the SEM showed different dispersed phase morphology, induced by flow at different temperatures. It is suggested that the formation of fibrillar morphology of dispersed phase is a key factor for the abnormal reduction ofηa for the HDPE/PA blend. | Hong Mei YANG Zhen Wei ZHANG Hart LI Qiang ZHENG | 2006 | Chinese Chemical Letters2006，17，11： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员