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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Graphene-based thin film with macropore-micropore alternating structure
The invention relates to the field of electromagnetic shielding materials, and provides a graphene-based film with a macroporous-microporous alternate structure. The invention aims to solve the problem that the mechanical property is reduced although a macroporous structure existing in graphene-based gas condensation can enhance the shielding performance. According to the main scheme, the preparation method comprises the following steps: preparing a PVA aerogel film, dissolving alkali-treated PAN nanofibers in deionized water, carrying out ultrasonic dispersion to obtain a fiber solution, and adding a G0 solution into the fiber solution to obtain a G0-aPAN solution; the preparation method comprises the following steps: firstly, placing a layer of PVA aerogel film on a plane substrate, then blade-coating a GO-aPAN solution on the PVA film to prepare a layer of film, after natural air drying, blade-coating the GO-aPAN solution on the other surface of the PVA film, repeatedly preparing a multi-layer alternate GO/aPAN-PVA-n film, then placing the multi-layer alternate GO/aPAN-PVA-n film in a muffle furnace for pre-oxidation treatment, and then performing high-temperature carbonization treatment on the pre-oxidized film to obtain the GO/aPAN-PVA-n film. And finally, GC/C-n is prepared.
本发明涉及电磁屏蔽材料领域，提供了一种大孔‑微孔交替结构石墨烯基薄膜。目的在于解决石墨烯基气凝中存在的大孔结构虽然能够增强屏蔽性能，但是却导致力学性能下降的问题。主要方案包括制备PVA气凝胶膜，将碱性处理的PAN纳米纤维溶解在去离子水中，超声分散得到纤维溶液，取G0溶液加入到纤维溶液中，得到G0‑aPAN溶液；首先在平面基底上边放置一层PVA气凝胶膜，然后将GO‑aPAN溶液刮涂在PVA膜上制备得到一层膜，待自然风干以后再在PVA膜的另外一面刮涂GO‑aPAN溶液，重复制备多层交替GO/aPAN‑PVA‑n膜，然后放置在马弗炉中进行预氧化处理，之后对预氧化的薄膜进行高温碳化处理，最终制备得到GC/C‑n。
Graphene-based thin film with macropore-micropore alternating structure
The invention relates to the field of electromagnetic shielding materials, and provides a graphene-based film with a macroporous-microporous alternate structure. The invention aims to solve the problem that the mechanical property is reduced although a macroporous structure existing in graphene-based gas condensation can enhance the shielding performance. According to the main scheme, the preparation method comprises the following steps: preparing a PVA aerogel film, dissolving alkali-treated PAN nanofibers in deionized water, carrying out ultrasonic dispersion to obtain a fiber solution, and adding a G0 solution into the fiber solution to obtain a G0-aPAN solution; the preparation method comprises the following steps: firstly, placing a layer of PVA aerogel film on a plane substrate, then blade-coating a GO-aPAN solution on the PVA film to prepare a layer of film, after natural air drying, blade-coating the GO-aPAN solution on the other surface of the PVA film, repeatedly preparing a multi-layer alternate GO/aPAN-PVA-n film, then placing the multi-layer alternate GO/aPAN-PVA-n film in a muffle furnace for pre-oxidation treatment, and then performing high-temperature carbonization treatment on the pre-oxidized film to obtain the GO/aPAN-PVA-n film. And finally, GC/C-n is prepared.
本发明涉及电磁屏蔽材料领域，提供了一种大孔‑微孔交替结构石墨烯基薄膜。目的在于解决石墨烯基气凝中存在的大孔结构虽然能够增强屏蔽性能，但是却导致力学性能下降的问题。主要方案包括制备PVA气凝胶膜，将碱性处理的PAN纳米纤维溶解在去离子水中，超声分散得到纤维溶液，取G0溶液加入到纤维溶液中，得到G0‑aPAN溶液；首先在平面基底上边放置一层PVA气凝胶膜，然后将GO‑aPAN溶液刮涂在PVA膜上制备得到一层膜，待自然风干以后再在PVA膜的另外一面刮涂GO‑aPAN溶液，重复制备多层交替GO/aPAN‑PVA‑n膜，然后放置在马弗炉中进行预氧化处理，之后对预氧化的薄膜进行高温碳化处理，最终制备得到GC/C‑n。
Graphene-based thin film with macropore-micropore alternating structure
一种大孔-微孔交替结构石墨烯基薄膜
MENG FANBIN (Autor:in) / CHEN YAO (Autor:in) / LI TIAN (Autor:in) / LIU QIAN (Autor:in)
22.09.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
/
B32B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
,
Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse
/
H05K
PRINTED CIRCUITS
,
Gedruckte Schaltungen
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