A comparative study of dispersing a polyamide 6 into a polypropylene melt in a Buss Kneader, continuous mixer, and modular intermeshing corotating and counter‐rotating twin screw extruders
A comparative study of dispersing a polyamide 6 into a polypropylene melt in a Buss Kneader, continuous mixer, and modular intermeshing corotating and counter‐rotating twin screw extruders
复制标题
DOI：
10.1002/pen.20941
复制
发表时间：
2008-04
影响因子：
3.2
通讯作者：
K. Shon;S. Bumm;James L White
中科院分区：
文献类型：
--
作者：
K. Shon;S. Bumm;James L White
我们研究了不混溶共混物（75/25）（聚丙烯-聚酰胺-6）在不同类型的连续混炼机（包括（i）Buss捏合机、（ii和iii）模块化啮合同向和反向旋转双螺杆挤出机和（iv）NEX-T Kobelco连续混炼机）中的相形态的发展。使用不同的螺杆配置，每台机器进行比较。总体而言，在不同的机器的比较，啮合异向双螺杆挤出机生产的分散形态最好。利用液滴破碎动力学模型，解释了共混物分散相液滴破碎速率和聚结速率。与我们早期研究的连续混合的碳酸钙颗粒的团聚体相比，聚合物液滴破碎速率小于颗粒团聚体的破碎速率，并且液滴的聚结速率比颗粒的再团聚速率大许多倍。Polym.工程索引，2008.© 2008年塑料工程师协会
We have made a study of the development of phase morphology of an immiscible blend(75/25)(polypropylene–polyamide-6) for different types of continuous mixers including (i) Buss Kneader, (ii and iii) modular intermeshing corotating and counter-rotating twin screw extruders, and (iv) NEX-T Kobelco Continuous Mixer. Comparisons are made using different screw configurations for each machine. Generally, in comparison of the different machines, the intermeshing counter-rotating twin screw extruder produced the finest dispersed morphology. Using a droplet breakup kinetic model, we interpreted the blend dispersed phase droplet breakdown rate and coalescence rate. In comparison with our earlier study of the continuous mixing of agglomerates of CaCO3 particles the polymer droplet breakup rate was smaller than that of the particle agglomerates and the coalescence rates of droplets were many times greater than the particle reagglomerates rates. POLYM. ENG. SCI., 2008. © 2008 Society of Plastics Engineers