2022年6月28日

纳米材料仍然是一个重要的增长领域，具有实现广泛的下一代技术的潜力。尽管这种材料是纳米级的，但大多数制造商都将其纳入某种形式的中间材料中使用。纳米碳的一个新兴领域是制造“宏观尺度”碳纳米管。这是一个用词不当，但用于包含碳纳米管纱线，床单，或面纱。IDTechEx十多年来一直在研究纳米碳行业。他们发布了最新版的碳纳米管报告《碳纳米管2022-2032:市场、技术、参与者》，其中包括MWCNTs和SWCNTs的10年数量和价值预测，并根据最终用途、参与者简介和基准研究进行了细分。本文将重点介绍碳纳米管纱线和床单，然后再扩展到高展弦比和混合材料;这些都处于比主要MWCNT市场更早的商业阶段。薄片或面纱可以将碳纳米管对齐或不对齐，后者通常以纠缠无纺布垫的形式出现。这些在市场上并不新鲜，也不是新的发展，但VACNT(垂直对齐碳纳米管)薄片正在获得一些显著的吸引力。NAWA Technologies刚刚在2022年初完成C轮融资，并在2020年收购了N12 Technologies，正在扩大其主要用于储能应用的能力。 Carbice Corporation raised an eye-catching $15m Series A in late 2020 and are targeting the use of VACNTs for thermal interface materials. Outside of niche use-cases, this material family remains as a solution looking for a commercial problem, but given the developments, they should not be overlooked. The CNT yarns continue to spark much excitement, an example being Kureha's 2022 investment, but are still to gain any of the commercial success that their properties promise. An ultra-strong, conductive fiber is an attractive proposal, and there are numerous production processes at various stages of TRL & MRL. Many commercial companies employing a spinning process can trace their roots back to Rice University , including DexMat, Conyar, and Wootz. The other main approach is a 1-step CVD process employed by the likes of Nanocomp, acquired by Huntsman in 2018, and Tortech. Beyond the manufacturing challenges, the question will remain about where there is a market pull beyond relatively niche space, sporting, and e-textile applications. Other comparable areas should not be ignored, namely: very high aspect ratio nanotubes and hybrid products. 1. High-aspect ratio tubes: this refers to the relative length to the diameter of the nanotubes. Of course, nanotubes are not all the same, and finding the right ones for the right application are critical, but a recent trend has been towards making higher-aspect ratio variations. This is taken to the limits in academia, where the likes of Waseda University grow ultra-long forests on the scale of cm but is also being seen in commercial settings with the likes of Cabot Corporation producing what they term a carbon nanostructure (CNS) with a length of over 25 um. This CNS is being targeted for numerous areas but is stated to have good success for EMI shielding. 2. Hybrid products: Most CNTs are used as an additive and are rarely used in isolation, typically blended with other additives for the final product need. However, there is an option to combine alternative materials with CNTs prior to incorporation by forming a hybrid CNT. There is a large amount of academic interest, but on the commercial side, you can see examples like a Carbon Nanobud (CNB) from Canatu and a range of companies specializing in functionalizing CNTs. One of the most notable in hybrid CNTs is CHASM Advanced Materials, who make CNT products in conjunction with copper & silver, carbon black, graphite & graphene, and ceramics like silica and alumina. These are being targeted for a range of applications but to pick one is the work with Birla Carbon , who also invested in CHASM, for the work with carbon black. It was stated that they get the properties of CNTs, but with the usability of carbon black, as with all these hybrid materials, it is at an early stage but certainly one to watch. For more details on all of these "macro CNTs" and a broader view of MWCNTs and SWCNTs, see the IDTechEx market report " Carbon Nanotubes 2022-2032: Market, Technology, Players ". For more information on IDTechEx's other reports and market intelligence offerings, please visit www.IDTechEx.com/Research . IDTechEx guides your strategic business decisions through its Research, Subscription and Consultancy products, helping you profit from emerging technologies. For more information, contact research@IDTechEx.com or visit www.IDTechEx.com .