Silicon rubber nanometer composite material for electromagnetic shielding as well as preparation method thereof
A silicone rubber nano-composite material technology, applied in the field of electromagnetic shielding materials, can solve problems such as difficulty in forming a uniform and continuous network, and achieve the effects of avoiding the use of dispersing aids, reducing costs, and ensuring structural uniformity
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Embodiment 1
[0052] A kind of silicon rubber nanocomposite material for electromagnetic shielding, its composition is addition type liquid silicone rubber (momentive RTV615, matrix resin: curing agent=10:1) 100 mass parts, graphene 0.5 mass parts, single wall carbon nanotube ( Chengdu Institute of Organic TNSAR) 0.1 parts by mass, dysprosium oxide 0.01 parts by mass, the silicone rubber is filled in the three-dimensional continuous network skeleton constructed by graphene / carbon nanotubes / lanthanide metal oxides, and the lanthanide metal oxides are evenly loaded on the carbon nanotubes Hybrid particles are formed on the surface, and the hybrid particles interweave with graphene to form a three-dimensional continuous porous material. The composite material is prepared by the following steps:
[0053] 1) Graphite oxide was prepared by the Hummers method, and then water was used as a medium to prepare a graphene oxide aqueous dispersion by ultrasonically exfoliating graphite oxide. The conce...
Embodiment 2
[0063] A kind of silicon rubber nanocomposite material for electromagnetic shielding, its composition is addition type liquid silicone rubber (momentive RTV615, matrix resin: curing agent=10:1) 100 mass parts, graphene 1 mass part, single wall carbon nanotube ( Chengdu Institute of Organic TNSAR) 0.01 parts by mass, europium oxide 0.04 parts by mass, the silicone rubber is filled in the three-dimensional continuous network skeleton constructed by graphene / carbon nanotubes / lanthanide metal oxides, and the lanthanide metal oxides are evenly loaded on the carbon nanotubes Hybrid particles are formed on the surface, and the hybrid particles interweave with graphene to form a three-dimensional continuous porous material. This composite material adopts the steps similar to embodiment 1 to prepare, and difference is:
[0064] The concentration of graphite oxide in step 1) is 4mg / ml, and the ultrasonic treatment condition is 500W / 500kHz / 20min.
[0065] The concentration of single-wal...
Embodiment 3
[0071] A kind of silicon rubber nanocomposite material for electromagnetic shielding, its composition is addition type liquid silicone rubber (momentive RTV615, matrix resin: curing agent=10:1) 100 mass parts, graphene 0.5 mass parts, multi-walled carbon nanotube ( Chengdu Institute of Organic TNGM2) 0.3 parts by mass, holmium oxide 0.1 parts by mass, the silicone rubber is filled in the three-dimensional continuous network skeleton constructed by graphene / carbon nanotubes / lanthanide metal oxides, and the lanthanide metal oxides are evenly loaded on the carbon nanotubes Hybrid particles are formed on the surface, and the hybrid particles interweave with graphene to form a three-dimensional continuous porous material. This composite material adopts the steps similar to embodiment 1 to prepare, and difference is:
[0072] The ultrasonic treatment condition in step 1) is 40W / 25kHz / 60min.
[0073] The concentration of multi-walled carbon nanotubes in step 2) is 5mg / ml, the ultras...
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Abstract
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