聚烯烃悬浮液制备和流变特性的研究  

Preparation and Rheological Properties of Polyolefin Suspension

作　　者：富雯婷[1] 管民[1] 李惠萍[1] 胡子昭[1] 

机构地区：[1]新疆大学化学化工学院,乌鲁木齐830008

出　　处：《精细石油化工进展》2009年第2期32-35,共4页Advances in Fine Petrochemicals

摘　　要：配制了2种不同悬浮基液的聚烯烃悬浮液,选择合适的分散方法,考察了聚烯烃颗粒粒度、聚烯烃固含量及剪切应力对悬浮液表观粘度的影响。2种聚烯烃悬浮液剪切速率和剪切应力的关系均符合Casson方程。用4个常用的相对粘度与固相体积分率关联式对实验结果进行验证,结果表明:对于异辛醇悬浮体系,Chong模型最适合;对于正丁醇悬浮体系,Eilers模型最适合。要配制较高固含量的聚烯烃悬浮液应选用正丁醇做悬浮基液。Two polyolefin suspensions were prepared using different suspension base fluid. The effects of particle size and solid content of the polyolefin on the apparent viscosities of the polyolefin suspensions were investigated by suitable methods of dispersion. The relation between shear rate and shear stress of the polyolefin suspensions accorded with Casson equation. Four correlation equations of relative viscosity and solid volume fraction were used to validate the test results. Chong model and Eilers model could be fit for isooctanol and n - butanol suspension system respectively, n -Butanol would be selected as suspension base fluid to prepare the polyolefin suspension with higher solid content.

关 键 词：聚烯烃悬浮液 表观粘度 流变特性 

分 类 号：O631.3[理学—高分子化学]