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Nano graphene laminate make good thermal coating for plastics

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  • Platinum Black Catalyst Platinum Nanopowders

    Customized Metal Platinum Black Catalyst Platinum Nanopowders Platinum is one of noble metals, it is one of the best catalyst and antioxidants, nano platinum ( Pt ) with small particles size, strong, safe, stable, reliable, environmentally friendly, non-toxic, tasteless, harmless, can be widely used in biomedical, Catalytic industry, cosmetic etc. 1. Platinum Nanopowders for biomedical  Hydrogen and nano-platinum have a synergistic effect that can be used in conjunction with the treatment of oxidant stress disorders; Studies have shown that platinum nano particle-mediated photo-thermal effect in the treatment of bone metastases in nude mice can be a good inhibition of bone tumor growth and osteolytic bone destruction; Lactic acid bio-sensor based on nano - platinum black modification for rapid detection, etc.  2. Platinum Nanopowders as catalyst  Nano platinum are widely applied in catalyst part, Nano-platinum powder has excellent bio-catalytic activity, it can be applied to polymer hydrogenation, reduction and synthesis. Nano platinum also can be used as fuel cell catalyst, due to its high cost, due to its high cost, now some use nano nickle to replace the platinum, and some are looking for ways to improve nano platinum efficiency as catalyst in fuel cells to save cost. Last year Chinese researches have developed a superfine platinum nanowire catalyst on the surface of the zigzag, greatly increasing the surface activity and specific surface area of the fuel cell catalyst, increasing its overall catalytic activity by more than 50 times. 3. Platinum Nanopowders for cosmetics Platinum nanoparticles , due to its strong oxidation resistance Platinum can effectively remove free radicals in the human body. Play the anti-aging effect and at the same time to achieve whitening bright. Platinum Nanopowders can also be used for food preservative, car exhaust purification, etc. Nano platinum do have a lot of amazing functions, we cannot list its amazing functions one by one though.  If you're interstsed in Platinum Nanopowders, please feel free to contact us as more

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Silicon carbide applications and properties Silicon carbide applications and properties

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Nano graphene laminate make good thermal coating for plastics

  • April 23,2015.
New result of the graphene laminate coatings can improve the thermal conductivity of plastic materials by up to 600 times. could substantially increase the potential range of practical applications for plastics, allowing them to be used in areas not possible until now – like solid-state lighting and in thermal management applications, such as cooling down electronic chips.

Nano graphene is a flat sheet of carbon atoms arranged in a honeycombed lattice. It has been attracting the attention of scientists and engineers alike since it was first created in 2004 by mechanical exfoliation of bulk graphite. The unique electronic and thermal properties of graphene could come in useful for making a host of novel electronics devices. These include transistors that are faster than any that exist today thanks to the fact that electrons move extremely fast in the carbon material.

Nano graphene by itself has a very high intrinsic thermal conductivity, in the 2000–5000 W/mK range near room temperature, which is greater than the thermal conductivity of diamond (the best bulk heat conductor known). Although the thermal conductivity of graphene does drop when it is placed on a substrate, it still remains relatively high. The thermal conductivity decreases because phonons – quantized vibrations of the crystal lattice that transport heat – couple across the different atomic layers in the carbon material and this phonon scattering disrupts heat conduction.

The researchers used a non-contact optothermal Raman technique for the thermal measurements. In this technique, the micro-Raman spectrometer is used as a sort of thermometer to measure temperature increases of the sample, and the exciting laser employed in the apparatus is also used as a heater.

The thermal conductivity of PET on its own is very low – in the 0.15–0.24 W/mK range at room temperature – and other plastic materials are also poor conductors of heat. This drawback prevents plastics from being employed in many applications that could benefit from their low cost, durability and light weight. Researcher proves that a few micron-thick graphene layer deposited on plastic films can drastically improve the way they conduct heat so make the applications possible.

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