Graphene into the era of membrane
Recently, China aviation industry supply chain, announced that has break through the preparation of large size and high quality technical problem of graphene films, mastered the substrate surface grain directional controlled growth and chemical vapor deposition (CVD) reaction gas partial pressure ratio of key patent technology, such as in the copper foil surface was more than 12 inches of graphene films; Graphene film preparation technology of much greater size to have breakthrough, recent will mass production, large size, high quality graphene films of engineering preparation to become a reality, marked the graphene preparation into the "film era".
Graphene is made of the carbon atoms in single flake structure, new material thickness is only a carbon atom, is currently the world's thinnest known material, also is the hardest material, has so far proved the strength of more than 100 times that of steel. And graphene is known materials in the electronic transmission rate of the fastest material, it also has 97.7% of the light transmittance, and has good thermal conductivity. Due to the preparation of difficult, at present the graphene is more precious than gold 15 ~ 20 times.
The material courtyard invested tens of millions of yuan, through the collection of intelligence research, solves the reaction ratio of source gas and carrier gas partial pressure, CVD reaction chamber furnace temperature uniformity, matching transfer medium and carrier, target and graphene film compatibility and so on four big problems, effectively improve the graphene membrane integrity, cleanliness, and product performance, and can to monolayer and multilayer graphene film layer or the structure of mixed layer control, realizes the large size, high quality graphene films mass production. Graphene films production capacity can reach hundreds of pieces every day, hospital chain in large size, high quality graphene preparation is in the domestic leading position.
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