当前位置: X-MOL 学术Polym. Polym. Compos. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Melt rheological behaviour of high-density polyethylene/montmorillonite nanocomposites
Polymers and Polymer Composites ( IF 2.1 ) Pub Date : 2021-04-23 , DOI: 10.1177/09673911211011828
Vishwa Pratap Singh 1 , Ravi Kumar 1 , Ashwith 1 , Priyanka Singh 1 , Satyajit Samanta 1 , Saikat Banerjee 1
Affiliation  

The present study explains the preparation of high-density polyethylene (HDPE)-based nanocomposites containing different amounts of montmorillonite (MMT) nanoclay (1–10 wt%). These nanocomposites were obtained by melt blending in a co-rotating twin screw extruder in absence and presence of a compatibiliser (HDPE-g-MA). The melt rheological behaviour of HDPE/MMT nanocomposites has been investigated by using capillary rheometer at 190°C, 200°C and 210°C over the shear rate range of 50–1000 s−1. The melt viscosity of HDPE increased marginally at 10 wt% filler loading while addition of compatibiliser to HDPE/MMT composites did not show any significant effect on viscosity. All nanocomposites showed shear thinning and non-Newtonian flow behaviour. The power law index reduced with increase in MMT concentration and increased with increase in temperature while opposite trend was observed for the consistency index. The activation energy was highest for the nanocomposites containing 10 wt% MMT and decreased upon addition of coupling agent.



中文翻译:

高密度聚乙烯/蒙脱土纳米复合材料的熔体流变行为

本研究说明了含有不同数量的蒙脱土(MMT)纳米粘土(1-10 wt%)的高密度聚乙烯(HDPE)基纳米复合材料的制备。这些纳米复合材料是通过在不存在和存在增容剂(HDPE-g-MA)的情况下,在同向旋转双螺杆挤出机中熔融共混而获得的。HDPE / MMT纳米复合材料的熔体流变行为已经通过使用毛细管流变仪在190°C,200°C和210°C下在50–1000 s -1的剪切速率范围内进行了研究。。HDPE的熔体粘度在填料含量为10 wt%时略有增加,而向HDPE / MMT复合材料中添加相容剂则对粘度没有显着影响。所有纳米复合材料均表现出剪切稀化和非牛顿流动行为。幂律指数随MMT浓度的增加而降低,随温度升高而增加,而一致性指数则呈现相反的趋势。对于包含10 wt%MMT的纳米复合材料,活化能最高,而在加入偶联剂后降低。

更新日期:2021-04-23
down
wechat
bug