A counter rotating mandrel die (CRMD) was designed and fabricated in cooperation with Dr. Collin GmbH in Ebersberg, Germany. The counter rotating mandrel die superimposes Poiseuille and Couette flows to achieve a die flow in which shear stresses are bi-helically distributed. The die has been successfully demonstrated for the extrusion of polymer nanocomposites comprising poly(ethylene-ran-methacrylic acid) ionomer (EMAA Na~+) / hydrogenated tallow-treated montmorillonite clay blends. Extruded films produced by operating the die in counter-rotation mode exhibited significantly greater in-plane orientation of the clay sheets than extruded films prepared without counter rotation.
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机译：逆旋转心轴模具（CRMD）是与德国Ebersberg的Collin GmbH博士合作设计和制造的。计数器旋转心轴模具叠加Poiseuille和Couette流动以实现模具流量，剪切应力是双螺旋分布的。已经成功地证明了模具，用于挤出包含聚（乙烯 - 甲基丙烯酸）离聚物（Emaa Na +）/氢化牛油处理的蒙脱石粘土混合物的聚合物纳米复合材料。通过在反转模式下操作模具产生的挤出薄膜在没有反向旋转的情况下，粘土片的粘土片面上的面内取向显着更大。
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