研究目的
To prepare a transparent conductive silicone rubber (TCSR) with excellent electrical conductivity, optical transmittance, and mechanical adhesion for applications in electrical insulation, inspired by natural '1D+2D' hybrid networks.
研究成果
The Marangoni interface self-assembly method successfully produced a hybrid CNT+G film with good compactness, leading to TCSR that exhibits simultaneous electrical conductivity, optical transmittance, and mechanical adhesion. Silicone ink coating enhances transmittance and adhesion, making it suitable for electrical insulation applications where transparency is desired. Future work could focus on improving these properties further for broader applicability.
研究不足
The transmittance of TCSR is relatively low (maximum 24.13% at 550 nm), and the sheet resistance is in the kilo-ohm range, which may not be sufficient for some high-performance applications. The adhesion and bendability are improved but not optimal, with trade-offs observed; e.g., higher adhesion reduces bendability. The method relies on specific materials and may not be scalable for industrial production without further optimization.
1：Experimental Design and Method Selection:
Utilized Marangoni interface self-assembly method to create a hybrid carbon nanotube (CNT) and graphene (G) network on silicone rubber substrates coated with silicone ink, aiming for high conductivity and transparency.
2：Sample Selection and Data Sources:
Used silicone rubber plates, multi-walled CNTs, graphene, silicone ink, ethanol, and deionized water as materials. Samples were prepared with varying concentrations of CNT+G suspension (
3：02 to 05 mg/mL) and different substrate treatments (SR, 01SI-SR, 05SI-SR). List of Experimental Equipment and Materials:
Included ultrasonic processor (KH800, 800W), PhysiTest adjustable gap applicator (PhysiTest 12303), SEM (Hitachi S-4800), UV-vis spectrophotometer (TU-1950), double electric four-point probe tester (RTS-9), Scotch tape (3M810), and various chemicals.
4：Experimental Procedures and Operational Workflow:
Dispersed CNT+G in ethanol via ultrasonication, sprayed onto water surface for film formation using Marangoni force, compressed film with a sponge, transferred onto pretreated silicone rubber substrates, and characterized for microstructure, transmittance, sheet resistance, adhesion, and bendability.
5：Data Analysis Methods:
Analyzed transmittance spectra, calculated sheet resistance averages, evaluated adhesion using resistance change rate, and assessed bendability through repeated bending tests.
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