轻松构建像栗子的结构防火PDMS/Mxene@BN,用于先进的热管理和电磁屏蔽应用
Fuping Bian1,2, Rui Huang1,2, Xiaobin Li1,2
1Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou, 510650, P. R. China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|February 11, 2024
概括
新的MXene@Boron化物 (MXene@BN) 复合填充剂增强了用于先进电子的聚甲基 (PDMS). 这种材料为灵活的设备提供了优越的导热性,阻燃性和电磁干扰屏蔽.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 纳米技术纳米技术
背景情况:
- 微型,便携式和灵活的电子设备需要先进的复合材料.
- 现有的材料往往缺乏导热性,阻燃性和电磁屏蔽的组合.
研究的目的:
- 开发一种具有增强导热性,阻燃性和电磁干扰 (EMI) 屏蔽的多功能复合材料.
- 为了研究MXene@Boron化物 (MXene@BN) 填充剂在聚甲基 (PDMS) 矩阵中的特性.
主要方法:
- 一种简单的绿色球磨剪法被用来合成MXene@Boron化物 (MXene@BN) 填料.
- MXene@BN填充剂被纳入聚甲基 (PDMS) 矩阵中,以创建PDMS/MXene@BN复合材料.
- 评估了导热性,阻燃性 (烟雾产量率和总烟雾产量) 和EMI屏蔽的有效性.
主要成果:
- 与纯 PDMS 相比,PDMS/MXene@BN 复合物具有 2.4% 的重量负载,其导热率增加了 210% (0.59 W m-1K-1) 与纯 PDMS 相比,其归因于类似栗子的双层结构.
- 烟雾产量率 (SPR) 和总烟雾产量 (TSP) 分别减少了63.20%和63.50%,这表明烟雾抑制效果优异.
- 复合材料在8.5GHz时实现了26.3dB的EMI屏蔽效率.
结论:
- 开发的PDMS/MXene@BN复合材料为先进的包装材料提供了一个有前途的解决方案.
- 该材料同时提高了导热性,阻燃性和EMI屏蔽.
- 简单的合成方法和多功能特性突出了下一代电子应用的潜力.
相关概念视频
Thermal Insulation in Masonry Walls
124
In hot, dry climates, the thermal mass of masonry walls can be beneficial, absorbing heat during the day and releasing it at night, thereby stabilizing indoor temperatures. However, in most other climates, additional insulation is necessary to enhance thermal resistance.
External insulation can be applied using an Exterior Insulation and Finish System (EIFS), which involves affixing panels of plastic foam to the wall and covering them with a polymeric stucco reinforced with glass fiber mesh....
External insulation can be applied using an Exterior Insulation and Finish System (EIFS), which involves affixing panels of plastic foam to the wall and covering them with a polymeric stucco reinforced with glass fiber mesh....
124
Diamagnetic Shielding of Nuclei: Local Diamagnetic Current
861
An applied magnetic field causes the electrons present in the molecule to circulate, setting up a local diamagnetic current within the molecule. The local diamagnetic current arising from circulating sigma-bonding electrons induces a magnetic field, Blocal that opposes the applied magnetic field, B0. The effective magnetic field experienced by these nuclei is given by the difference between the applied and local magnetic fields in a phenomenon called local diamagnetic shielding. Essentially,...
861
Dual Nature of Electromagnetic (EM) Radiation
2.0K
Electromagnetic (EM) radiation consists of electric and magnetic field components oscillating in planes perpendicular to each other and mutually perpendicular to radiation propagation through space. EM radiation can be classified as a wave, characterized by the properties of waves such as wavelength (denoted as λ) and frequency (represented by ν).
Wavelength is the distance between two consecutive peaks (the highest point) or troughs (the lowest point) in the wave. Frequency is the...
Wavelength is the distance between two consecutive peaks (the highest point) or troughs (the lowest point) in the wave. Frequency is the...
2.0K
Nuclear Power
7.8K
Controlled nuclear fission reactions are used to generate electricity. Any nuclear reactor that produces power via the fission of uranium or plutonium by bombardment with neutrons has six components: nuclear fuel consisting of fissionable material, a nuclear moderator, a neutron source, control rods, reactor coolant, and a shield and containment system.
Nuclear Fuels
Nuclear fuel consists of a fissile isotope, such as uranium-235, which must be present in sufficient quantity to provide a...
Nuclear Fuels
Nuclear fuel consists of a fissile isotope, such as uranium-235, which must be present in sufficient quantity to provide a...
7.8K


