防火安全和机械强度较高的等级复合材料的调节性构造,用于对电磁干扰进行屏蔽
Yongqian Shi1, Chenxin Nie1, Songqiong Jiang1
1College of Environment and Safety Engineering, Fuzhou University, Fuzhou 350116, China.
Journal of colloid and interface science
|September 3, 2023
概括
耐火热塑性聚氨 (TPU) 复合材料是使用棉织物和MXene开发的,用于增强电磁干扰 (EMI) 屏蔽. 这些新型材料具有卓越的机械性能,并降低了火灾危险,为更安全的电子应用铺平了道路.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 纳米技术 纳米技术
背景情况:
- 开发有效的电磁干扰 (EMI) 屏蔽材料对于保护电子设备至关重要.
- 现有的聚合物复合材料经常面临着消防安全和机械强度方面的挑战.
- 层次化的复合结构为提高材料性能提供了潜力.
研究的目的:
- 设计和制造具有增强EMI屏蔽能力的耐火热塑性聚氨 (TPU) 复合材料.
- 提高TPU复合材料的机械性能,使用棉织物和功能填充剂.
- 调查开发的等级复合材料的耐火性和EMI屏蔽效果.
主要方法:
- 用MXene涂覆棉纤维并将其纳入TPU复合材料.
- 使用二甲基硫酸盐修饰的分层双氧化物功能化短碳纤维混合体.
- 采用融混合方法和设计的热压缩技术.
- 描述消防安全 (热释放率,CO,CO2产量),EMI屏蔽效率和机械性能.
主要成果:
- 与纯TPU相比,棉花/TPU复合材料的峰值热释放率 (50.1%),CO生产率 (52.1%) 和CO2生产率 (55.4%) 显著降低.
- 在X频段实现了高EMI屏蔽效率40.0dB,在K频段达到54.6dB.
- 增强的机械性能,在断裂时的延长和性值明显高于纯TPU.
结论:
- 开发的棉花/TPU等级复合材料显示出出色的消防安全和EMI屏蔽性能.
- 加入MXene,功能化混合物和棉织物显著提高了机械强度.
- 这些先进的复合材料为需要耐火性和电磁保护的应用提供了有前途的解决方案.
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