A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Wave-absorbing composite material for shielding signals of electronic equipment and preparation process thereof
The invention discloses a wave-absorbing composite material for shielding signals of electronic equipment, which is characterized by comprising, by mass: 15-30 parts of resin matrix; 3-7 parts of a dispersant; 2-5 parts of an anti-settling agent; 10 to 20 parts of graphene; 10 to 20 parts of a carbon nanotube; 5-20 parts of silicon nitride powder; 5-20 parts of silicon dioxide powder; 10 to 15 parts of cobalt oxide; 10 to 15 parts of zinc oxide; and 100 to 200 parts of a solvent. The electromagnetic shielding fabric has a good electromagnetic shielding effect and also has a wave absorbing function. The graphene and the carbon nanotubes have good mechanical properties, and meanwhile, the silicon dioxide and the silicon nitride are used as absorbents together, so that the absorption wavebandrange of electromagnetic waves is expanded, and the absorptivity is enhanced; zinc oxide and cobalt oxide increase the hardness of the obtained composite material and improve the electromagnetic waveabsorption rate of the material.
本发明公开了一种电子设备屏蔽信号的吸波复合材料，其特征在于，按质量份数计，包括树脂基体15～30份；分散剂3～7份；防沉剂2～5份；石墨烯，10‑20份；碳纳米管，10‑20份；氮化硅粉末，5‑20份；二氧化硅粉末，5‑20份；氧化钴，10‑15份；氧化锌，10‑15份；溶剂，100‑200份。本发明具有很好电磁屏蔽效果同时又具有吸波功能。石墨烯、碳纳米管具有良好的力学性能，同时二氧化硅和氮化硅共同作为吸收剂，扩大对电磁波的吸收波段范围，增强吸收率；氧化锌和氧化钴增加得到的复合材料的硬度，同时提升材料的电磁波吸收率。
Wave-absorbing composite material for shielding signals of electronic equipment and preparation process thereof
The invention discloses a wave-absorbing composite material for shielding signals of electronic equipment, which is characterized by comprising, by mass: 15-30 parts of resin matrix; 3-7 parts of a dispersant; 2-5 parts of an anti-settling agent; 10 to 20 parts of graphene; 10 to 20 parts of a carbon nanotube; 5-20 parts of silicon nitride powder; 5-20 parts of silicon dioxide powder; 10 to 15 parts of cobalt oxide; 10 to 15 parts of zinc oxide; and 100 to 200 parts of a solvent. The electromagnetic shielding fabric has a good electromagnetic shielding effect and also has a wave absorbing function. The graphene and the carbon nanotubes have good mechanical properties, and meanwhile, the silicon dioxide and the silicon nitride are used as absorbents together, so that the absorption wavebandrange of electromagnetic waves is expanded, and the absorptivity is enhanced; zinc oxide and cobalt oxide increase the hardness of the obtained composite material and improve the electromagnetic waveabsorption rate of the material.
本发明公开了一种电子设备屏蔽信号的吸波复合材料，其特征在于，按质量份数计，包括树脂基体15～30份；分散剂3～7份；防沉剂2～5份；石墨烯，10‑20份；碳纳米管，10‑20份；氮化硅粉末，5‑20份；二氧化硅粉末，5‑20份；氧化钴，10‑15份；氧化锌，10‑15份；溶剂，100‑200份。本发明具有很好电磁屏蔽效果同时又具有吸波功能。石墨烯、碳纳米管具有良好的力学性能，同时二氧化硅和氮化硅共同作为吸收剂，扩大对电磁波的吸收波段范围，增强吸收率；氧化锌和氧化钴增加得到的复合材料的硬度，同时提升材料的电磁波吸收率。
Wave-absorbing composite material for shielding signals of electronic equipment and preparation process thereof
一种电子设备屏蔽信号的吸波复合材料及其制备工艺
YOU SHAOXIONG (author)
2020-09-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2022
Broadband wave-absorbing composite material and preparation method thereof
| European Patent Office | 2022
| European Patent Office | 2023
Metal/ceramic wave-absorbing composite material and preparation method thereof
| European Patent Office | 2022
SiCnw/Si3N4 composite ceramic wave-absorbing material and preparation method thereof
| European Patent Office | 2023