用石墨烯氧化物和聚乙烯合剂添加的竹制复合材料的合成,电导和波吸收性能
Jin Wang1, Wangjun Wu1,2, Wenfu Zhang1
1Key Laboratory of Bamboo Research of Zhejiang Province, Zhejiang Academy of Forestry, Hangzhou 310023, China.
Polymers
|January 11, 2025
概括
这项研究开发了新的石墨烯氧化物 (GO) 和聚氨 (PANI) 联合合碳化竹 (CB) 复合材料,用于先进的微波吸收. 由此产生的GO/PANI/CB材料表现出卓越的性能,为电磁波衰减提供了有前途的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 电磁学 电磁学 电磁学 电磁学
- 纳米技术纳米技术
背景情况:
- 开发有效的微波吸收材料对于电磁干扰 (EMI) 屏蔽和隐形技术至关重要.
- 碳化竹子,石墨烯氧化物 (GO) 和聚氨酸 (PANI) 都被单独探索,以了解它们的电磁性质.
- 这些材料的协同作用组合可能会增强微波吸收能力.
研究的目的:
- 在碳化竹子 (CB) 上合成和表征新型微波吸收复合材料,使用联合合的氧化石墨烯 (GO) 和聚氨 (PANI).
- 为了研究准备好的GO/PANI/CB复合材料的微波吸收性能.
- 评估GO/PANI/CB作为一个具有成本效益和高性能微波吸收器的潜力.
主要方法:
- 竹子的碳化,然后在现场聚合1R-(-) -Camphorsulfonic酸 (L-CSA) 与石墨烯氧化物 (GO) 和聚氨酸 (PANI) 配合,产生GO/PANI/CB复合物.
- 材料导电性,表面形态和化学相互作用 (GO和PANI之间的键) 的表征.
- 使用矢量网络分析仪 (VNA) 测量微波吸收性能.
主要成果:
- GO/PANI/CB复合材料的高导电率为2.17 ± 0.05 S/cm.
- 在7.12GHz的最小反射损失 (RLmin) 为-49.83dB,在3.5毫米厚的样本中达到30%的GO/PANI/CB.
- 在2毫米厚的样本中观察到4.72 GHz (11.68-16.40 GHz) 的有效吸收带宽 (<-10 dB).
结论:
- 与之前报告的许多基于PANI的材料相比,GO/PANI/CB复合材料显示出优越的微波吸收性能.
- 该材料提供了强吸收和宽带宽的平衡,归因于GO,PANI和CB的协同效应.
- GO/PANI/CB具有简单的制备,低成本,可再生性,轻质和薄度等优点,使其适合于新的微波吸收应用.
更多相关视频
09:38Strain Sensing Based on Multiscale Composite Materials Reinforced with Graphene Nanoplatelets
Published on: November 7, 2016
8.7K
11:18Manufacturing of a Nafion-coated, Reduced Graphene Oxide/Polyaniline Chemiresistive Sensor to Monitor pH in Real-time During Microbial Fermentation
Published on: January 7, 2019
8.4K
相关概念视频
01:21Wood Products
Wood products encompass a broad range of materials crafted from wood strands, veneers, lumber, and even waste wood-like shreds, designed for both structural and nonstructural purposes. Various specialized wood products have been developed to enhance strength, durability, and versatility in building applications.
Glue-laminated wood, often referred to as glulam, combines multiple smaller pieces of dimensional lumber using adhesives to form a single, larger piece. Cross-laminated timber consists...
Glue-laminated wood, often referred to as glulam, combines multiple smaller pieces of dimensional lumber using adhesives to form a single, larger piece. Cross-laminated timber consists...
01:30Superplasticizers
Superplasticizers are advanced admixtures that enhance the workability of concrete by lowering the water content without compromising the strength of the material. These substances are highly effective water reducers, improving concrete flow, making it easier to work with, and enabling concrete to reach inaccessible areas or densely reinforced sections without mechanical vibration. The key components in superplasticizers are either sulfonated melamine or naphthalene formaldehyde condensates,...