开发用石墨烯修饰的木质/玻璃混合复合材料,通过纤维包装,用于增强结构应用
Mainul Islam1, Md Tarikul Islam1, Main Uddin Apu1
1Department of Textile Engineering, Dhaka University of Engineering and Technology Gazipur 1707 Bangladesh forkan@duet.ac.bd.
RSC advances
|August 5, 2025
概括
这项研究开发了一种新的混合复合材料,使用经过氧化石墨烯 (GO) 处理的木质纤维绕着玻璃纤维芯包裹. 由此产生的经过GO修改的木质/玻璃混合复合材料表现出优异的机械性能和较低的吸水能力,用于先进的工程应用.
科学领域:
- 材料科学 材料科学 材料科学
- 复合材料工程 复合材料工程
背景情况:
- 朱特纤维是一种可持续的自然资源,具有结构复合材料的潜力.
- 柔纤维机械性能和织架构的局限性阻碍了其在高负荷应用中的使用.
- 与玻璃纤维的混合化可以提高木质复合材料的性能,但纤维含量和强度方面的挑战仍然存在.
研究的目的:
- 为木/玻璃纤维复合材料开发一种新的混合预成型架构.
- 通过氧化石墨烯 (GO) 处理来提高木质纤维的兼容性和性能.
- 评估开发的混合复合材料的机械性能和吸水能力.
主要方法:
- 采用纤维包装技术,使用玻璃纤维作为核心和木质纤维作为包装.
- 朱特纤维用氧化石墨烯 (GO) 处理,以增强界面粘附.
- 在混合复合材料上进行了机械测试 (拉力,曲,冲击) 和吸水测试.
主要成果:
- 经过GO处理的混合复合材料 (G.cGFJF) 实现了272.63 MPa的拉伸强度,10.42 GPa的屈曲模量和85.56 kJ m-2.2的抗冲击能力.
- 在GO处理的样本中,吸水率显著降低至1.12%.
- 观察到玻璃纤维核心和木质纤维包装之间的协同效应,由GO处理增强.
结论:
- 这种新型的GO改性木质/玻璃混合复合材料表现出增强的机械性能和减少的吸水量.
- 开发的纤维包装技术和GO处理有效地解决了传统木质/玻璃复合材料的局限性.
- 这些先进的复合材料在汽车,航空航天和土木工程中显示出可持续结构应用的重大前景.
相关概念视频
Fiber Reinforced Concrete
131
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...
131
Tensile Strength Considerations of Concrete
199
Considering the tensile strength of concrete involves recognizing that the theoretical strength of cement paste can be up to a thousand times higher than what is observed in practical applications. This significant discrepancy is largely attributed to the presence of microscopic cracks within the concrete. These cracks tend to amplify stress at their tips when a load is applied, a phenomenon explained by Griffith's theory of brittle fracture.
The dimensions and shape of a concrete specimen...
The dimensions and shape of a concrete specimen...
199
Design of Prismatic Beams for Bending
371
The design of prismatic beams, structural elements with a uniform cross-section, focuses on ensuring safety and structural integrity under load. The design process begins by determining the allowable stress, either from material properties tables, or by dividing the material's ultimate strength by a safety factor. This safety factor is essential for accommodating uncertainties, and varies depending on the material—timber, steel, or concrete—with each having unique strength and...
371
Flexural Stress
361
When analyzing bending in symmetric members, it's crucial to understand how stresses distribute when subjected to bending moments. This stress distribution is effectively described by applying fundamental mechanics and material science principles, particularly Hooke's Law for elastic materials.
Hooke's Law states that within the material's elastic limits, stress is directly proportional to strain. In a member experiencing a bending moment, the strain at any point is relative to...
Hooke's Law states that within the material's elastic limits, stress is directly proportional to strain. In a member experiencing a bending moment, the strain at any point is relative to...
361
Residual Stresses in Bending
255
In the study of elastoplastic members subjected to bending moments, understanding the loading and unloading phases is crucial for assessing material behavior and structural integrity. During the loading phase, as the bending moment increases, the material initially responds elastically, adhering to Hooke's Law, where stress is directly proportional to strain. When the load exceeds the yield strength, plastic deformation occurs, resulting in permanent strain and deformation that remains even...
255


