作　　者： ;

机构地区： 肇庆学院化学化工学院轻工化学系

出　　处： 《现代塑料加工应用》 2003年第4期10-12,共3页

摘　　要： 借助HAAKERHEOCORD 90流变仪分别在 15 0 ,170和 190℃下 ,研究了LLDPE/LDPE/ (E/VAC)和LLDPE/LDPE/ (E/VAC) /Mg(OH) 2 体系的流变行为。结果表明 :二体系均属非牛顿型假塑性流体。不同剪切速率下 ,粘流活化能相差很小 ,说明其熔体粘度对温度均不十分敏感。相同温度下 ,LLDPE/LDPE/ (E/VAC) /Mg(OH ) 2 无卤阻燃复合材料的挤出膨胀比小于LLDPE/LDPE/ (E/VAC) ,这一特性说明 。 The rheological behavior of LLDPE/LDPE/(E/VAC) and LLDPE/LDPE/(E/VAC)/Mg(OH) 2 was studied at 150℃,170℃ and 190℃ with HAAKE RHEOCORD 90 instrument. The result indicated that the melting fluid flow behavior of LLDPE/LDPE/(E/VAC)/Mg(OH) 2 and LLDPE/LDPE/(E/VAC) was belonged to non-Newton fluid flow. In the different shear rate, the flow activation energy of LLDPE/LDPE/(E/VAC)/Mg(OH) 2 was very close to LLDPE/LDPE/(E/VAC), it indicated that the melting viscosity of LLDPE/LDPE/(E/VAC)/Mg-(OH) 2 was not quite sensitive to temperature as well as LLDPE/LDPE/(E/VAC). At the same temperature, the Barus effect of LLDPE/LDPE/(E/VAC)/Mg(OH) 2 was lower than LLDPE/LDPE/(E/VAC), and it showed that the size stability of manufacture of LLDPE/LDPE/(E/VAC)/Mg(OH) 2 was better than LLDPE/LDPE/(E/VAC).

关 键 词： 流变行为 线型低密度聚乙烯 低密度聚乙烯 乙烯 醋酸乙烯共聚物 氢氯化镁

领　　域： [化学工程] [化学工程]