热塑性魔芋葡甘聚糖流变特性研究  

Study on Rheological Property of Thermoplastic Konjac Glucomannan

作　　者：张正光[1] 陈效华[1] 唐少俊[1] 罗学刚[2] 

机构地区：[1]奇瑞汽车股份有限公司中央研究院,安徽芜湖241009 [2]西南科技大学,四川绵阳621010

出　　处：《塑料科技》2010年第7期58-62,共5页Plastics Science and Technology

基　　金：国家"十一五"科技支撑计划资助项目(2007BAB18808)

摘　　要：以合成的魔芋葡甘聚糖(KGM)为基体,甲酰胺、乙二醇、甘油为增塑剂,碳酸钙、纳米二氧化硅、木质素为填料,通过熔融共混法制备了KGM热塑材料,并研究了温度、转速、增塑剂及填料对其流变特性的影响。结果表明:在温度150℃、转速30r/min、常压条件下,KGM热塑材料的最大扭矩为30.5N-m,平衡扭矩为10N-m,塑化时间为30s,具有较好的加工性能;增塑剂和填料可以有效降低KGM热塑材料的最大扭矩和平衡扭矩,降低生产能耗,其中甲酰胺增塑效果最好,纳米二氧化硅填充效果最优,碳酸钙最具有实用价值。Taking konjac glucomannan（KGM） as matrix,formamide,glycol and glycerol as plasticizers,calcium carbonate,nano-silicon dioxide and lignin as fillers,the thermoplastic KGM blend was prepared.The effects of temperature,rotation speed,plasticizers and fillers on rheological property of thermoplastic KGM blend were studied.The results show that when the temperature is 150℃,the rotation speed is 30 r/min and the pressure is under atmospheric conditions,the thermoplastic KGM blend exhibits good processing property,its maximum torque is 30.5 N-m,balance torque is 10 N-m,and the plasticizing time is 30 s;both plasticizers and fillers could reduce the maximum torque and balance torque of the thermoplastic KGM blend effectively,wherein the best plasticizer is formamide,the best filler is nano-silicon dioxide,and the most practical filler is calcium carbonate.

关 键 词：魔芋葡甘聚糖 流变特性 热塑性 

分 类 号：TQ320.1[化学工程—合成树脂塑料工业]