Preparation of carbon nanotube-reinforced polyethylene nanocomposites with better antiscaling and corrosion-resistant properties  

作　　者：Binbin Sun Qian Liu Yuxin Gao Liang Han Rui Zhang Chenxi Zhang Xilai Jia 

机构地区：[1]Daqing Petrochemical Research Center,Daqing,Heilongjiang 163714,China [2]School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China [3]Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology,Department of Chemical Engineering,Tsinghua University,Beijing 100084,China

出　　处：《Industrial Chemistry & Materials》2024年第1期154-164,共11页工业化学与材料（英文）

基　　金：This work was supported by the research fund of China National Petroleum Corporation(No.2020E-2801(GF)).

摘　　要：Anti-scaling technology for pipelines has always been a focus of oilfield industrial production.Compared with traditional metal pipes,polyethylene(PE)pipes have unique advantages in terms of corrosion resistance,surface friction resistance,and service life.In this paper,aiming at an enhancement of antiscaling and corrosion-resistant properties,as well as increased mechanical properties,PE nanocomposites have been prepared by the introduction of modified carbon nanotubes(m-CNTs)into the PE matrix.To improve the interface compatibility of the composites,the CNTs were treated with reactive tetrabutyl titanate after nitric acid oxidation,which brings about uniform dispersion of the CNTs and intimate interface interaction.As the m-CNT fraction increases,the PE crystallinity displays a slight increase.Polarized microscopy shows that the scaling on the surface of the composite material is obviously reduced compared with pure PE,because the surface free energy of the composite material decreases.Moreover,due to the good dispersion,the composites show enhanced mechanical properties.That is,by adding 1.10 wt%CNTs,the tensile stress and impact toughness of the composites are 20.76 MPa and 37.89 kJ m^(-2),respectively,increases of 15.0% and 11.9% compared with pure PE.This paper supports the idea that the crystallinity of the PE matrix can be improved by adding CNTs,thereby increasing the corrosion resistance and anti-scaling properties.This work can provide inspiration for using the methods of scale inhibition and corrosion resistance in polymer nanocomposites.

关 键 词：Carbon nanotube NANOCOMPOSITE POLYETHYLENE ANTI-SCALING Corrosion-resistant 

分 类 号：TB3[一般工业技术—材料科学与工程]