多壁碳纳米管 (MWCNT) -增强聚乙烯 (PS) 复合材料:制备,结构分析,以及机械和热性能
Kadir Gündoğan1, Damla Karaağaç1
1Department of Nanotechnology Engineering, Uşak University, Uşak 64200, Türkiye.
Polymers
|July 30, 2025
概括
这项研究用多壁碳纳米管 (MWCNTs) 增强了聚钢 (PS),改善了机械和热性能. 0.3%重量的MWCNT复合材料显示出优越的抗拉强度和热稳定性,提供了有前途的材料进步.
科学领域:
- 材料科学与工程 材料科学与工程
- 聚合物复合材料 聚合物复合材料
- 纳米技术纳米技术
背景情况:
- 聚乙烯 (PS) 是一种多功能热塑性聚合物,因其可加工性和机械性能而受到重视.
- 用碳纳米管 (CNTs) 等纳米材料合PS可以提高其电导率和机械性能.
- 将CNTs的高强度和低重量与PS的性能相结合,是先进材料开发的关键领域.
研究的目的:
- 创建和描述多壁碳纳米管 (MWCNT) 增强聚乙烯 (PS) 复合材料.
- 调查不同MWCNT重量百分比 (0.1%,0.2%,0.3%) 对PS性能的影响.
- 评估制造的PS/MWCNT复合材料的机械,微观结构和热特性.
主要方法:
- 塑料注塑成型用于制备含有0.1,0.2和0.3%重量%MWCNT的PS/MWCNT复合材料.
- 描述技术包括扫描电子显微镜 (SEM),里埃变换红外光谱 (FTIR),原子力显微镜 (AFM) 和热重力分析 (TGA).
- 使用AFM通过根平均平方 (RMS) 值来评估表面地形,而TGA确定了热稳定性.
主要成果:
- 飞行机组分析表明,随着MWCNT含量增加,RMS值下降.
- TGA结果显示,0.1%和0.2%的MWCNT复合材料的降解温度没有显著变化,但0.3%的复合材料表现出增强的热稳定性,降解在539°C时几乎完成.
- 0.3%的MWCNT复合材料表现出优越的机械性能,包括1.91%的百分比延伸和12.174mm2的抗拉强度,超过了较低的MWCNT度.
结论:
- 增强MWCNT显著提高了聚钢的机械和热性能.
- 0.3%重量的MWCNT复合材料表现出最有前途的抗拉强度,延长和热稳定性的组合.
- 这些发现表明,MWCNT增强的PS聚合物是先进材料应用的可行选择.
更多相关视频
09:12Functionalization of Single-walled Carbon Nanotubes with Thermo-reversible Block Copolymers and Characterization by Small-angle Neutron Scattering
Published on: June 1, 2016
9.3K
09:35Preparation and Evaluation of Hybrid Composites of Chemical Fuel and Multi-walled Carbon Nanotubes in the Study of Thermopower Waves
Published on: April 10, 2015
8.9K
相关概念视频
01:22Fiber Reinforced Concrete
135
Fiber-reinforced concrete significantly enhances the structural and nonstructural properties of traditional concrete by incorporating fibers like steel, glass, and polymers. These fibers, varying from natural ones such as sisal and cellulose to manufactured ones like polypropylene and Kevlar, are mixed into hydraulic cement with aggregates. Steel fibers, often preferred for their robustness, contribute to improved ductility, toughness, and post-cracking performance. The concrete is classified...
135
01:25Reinforcements in Concrete
160
Reinforced concrete is a composite material used extensively in construction, combining the compressive strength of concrete with the tensile strength of steel. This synergy is essential as concrete, while excellent at resisting compression, is weak under tension. Steel bars, or rebars, are embedded in the concrete to handle these tensile forces. The choice of steel is strategic; it shares a similar coefficient of thermal expansion with concrete, which ensures uniformity in response to...
160
01:08Bending of Members Made of Several Materials
263
In analyzing a structural member composed of two different materials with identical cross-sectional areas, it is crucial to understand how their distinct elastic properties affect the member's response under load. The analysis involves assessing stress and strain distributions using the transformed section concept, which accounts for variations in material properties.
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each...
Hooke's Law determines stress in each material, stating that stress is proportional to strain but varies due to each...
263
01:08Molecular Weight of Step-Growth Polymers
2.3K
Step growth polymerization involves bi or multifunctional monomers. Bifunctional monomers react to form linear step growth polymers, whereas multifunctional monomers react to form non-linear or branched polymers.
As the step-growth polymerization involves step-wise condensation of monomers, the molecular weight also builds up eventually. Consequently, high molecular weight polymers are obtained at the late stages of the polymerization, where 99% of monomers have been consumed.
The extent of the...
As the step-growth polymerization involves step-wise condensation of monomers, the molecular weight also builds up eventually. Consequently, high molecular weight polymers are obtained at the late stages of the polymerization, where 99% of monomers have been consumed.
The extent of the...
2.3K