Mechanical and thermal investigation of high-density polyethylene/multi-walled carbon nanotube/tungsten disulfide hybrid composites

IF 2.4 3区 化学 Q3 POLYMER SCIENCE Iranian Polymer Journal Pub Date : 2024-04-01 DOI:10.1007/s13726-024-01305-w
Sampath Kumar Sudarsanam, K. Panneerselvam
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Abstract

This study investigates the impact of addition of different weight percentages of tungsten disulphide (WS2) lubricant on the thermal and mechanical properties of high density polyethylene (HDPE) hybrid composites reinforced with a multi-walled carbon nanotube (MWCNT). HDPE composites were fabricated using a twin-screw extruder process employed to add reinforcement and lubricants in different weight percentages (%, by weight). X-ray diffraction (XRD) patterns indicated the distribution and dispersion of filler materials in the HDPE matrix. The quality of the composite was investigated by measuring the mechanical properties such as impact strength, hardness, tensile strength, and flexural strength. Thermogravimetric analysis (TGA) was employed to examine the thermal stability of the composite material. Main decomposition temperatures were determined using derivative thermogravimetry (DTG) analysis. Thermal transitions and degree of crystallisation (Xc) of the polymeric materials used were investigated by using differential scanning calorimetry (DSC) technique. The lubricant was added in three varying amounts of 2%, 4% and 8% (by weight) whilst MWCNT was maintained at 1% (by weight). The experimental results revealed that the composite with 2% (by weight) of WS2 provides better mechanical properties such as impact strength, flexural strength, tensile strength, and hardness. With an increase in lubricant percentage, agglomeration of particles is found to be dominant in the composite, and the composite with 4% (by weight) of WS2 displays better thermal properties, as determined using TGA, DTG and DSC analytical techniques.

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高密度聚乙烯/多壁碳纳米管/二硫化钨混合复合材料的力学和热学研究
本研究探讨了添加不同重量百分比的二硫化钨(WS2)润滑剂对以多壁碳纳米管(MWCNT)增强的高密度聚乙烯(HDPE)混合复合材料的热性能和机械性能的影响。高密度聚乙烯(HDPE)复合材料是采用双螺杆挤出机工艺制成的,其中添加了不同重量百分比(%,按重量计)的增强剂和润滑剂。X 射线衍射(XRD)图显示了填充材料在高密度聚乙烯基体中的分布和分散情况。通过测量冲击强度、硬度、拉伸强度和弯曲强度等机械性能,对复合材料的质量进行了研究。热重分析(TGA)被用来检测复合材料的热稳定性。使用导数热重分析法(DTG)确定了主要分解温度。使用差示扫描量热仪 (DSC) 技术研究了所用聚合物材料的热蜕变和结晶度 (Xc)。润滑剂的添加量分别为 2%、4% 和 8%(按重量计),而 MWCNT 的添加量保持在 1%(按重量计)。实验结果表明,添加 2%(重量)WS2 的复合材料具有更好的机械性能,如冲击强度、弯曲强度、拉伸强度和硬度。根据 TGA、DTG 和 DSC 分析技术的测定,随着润滑剂比例的增加,复合材料中的颗粒团聚现象占主导地位,WS2 含量为 4%(重量百分比)的复合材料具有更好的热性能。
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来源期刊
Iranian Polymer Journal
Iranian Polymer Journal 化学-高分子科学
CiteScore
4.90
自引率
9.70%
发文量
107
审稿时长
2.8 months
期刊介绍: Iranian Polymer Journal, a monthly peer-reviewed international journal, provides a continuous forum for the dissemination of the original research and latest advances made in science and technology of polymers, covering diverse areas of polymer synthesis, characterization, polymer physics, rubber, plastics and composites, processing and engineering, biopolymers, drug delivery systems and natural polymers to meet specific applications. Also contributions from nano-related fields are regarded especially important for its versatility in modern scientific development.
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