SBIR Phase I: Surface Engineered Powders by Fluidized Bed Combustion Chemical Vapor Deposition

该小型企业创新研究（SBIR）第一阶段项目将开发燃烧化学气相沉积（CCVD）工艺，以改变流化床中颗粒物的表面特性。拟议的流化床CCVD（FBCCVD）技术将使下一代表面工程粉末的生产成为可能，用于装饰和特种化学品等应用。在CCVD工艺中，低成本、环境友好的含金属试剂溶解在溶剂中，作为可燃燃料。使用MicroCoating Technologies（MCT）的创新雾化器Nanomiser TM，将该溶液雾化形成亚微米液滴，然后在火焰中燃烧以生产所需材料。这种基于火焰的方法将与外部再循环流化床相结合，并用于用致密且粘附良好的薄膜封装悬浮在流化床中的颗粒物质。将研究FBCCVD工艺参数对封装粉末性能、沉积效率和生产率的影响。具有功能化表面的廉价粉末在装饰、光学、特种化学品和电子应用中具有很高的需求。粉末市场估计每年超过10亿美元的市场，代表着一个不断增长的细分市场。拟议研究的成功将导致一种新的FBCCVD工艺，可以促进廉价生产封装粉末。

This Small Business Innovation Research (SBIR) Phase I project will develop the Combustion Chemical Vapor Deposition (CCVD) process to modify surface properties of particulate matter in a fluidized bed. The proposed Fluidized Bed CCVD (FBCCVD) technique will enable production of next generation surface engineered powders for applications such as decorative and specialty chemicals. In the CCVD process, low-cost, environmentally friendly, metal-bearing reagents are dissolved in solvents that serve as a combustible fuel. Using MicroCoating Technologies (MCT) innovative atomizer, the Nanomiser TM , this solution is atomized to form submicron droplets that are then combusted in a flame to produce the desired material. This flame-based method will be integrated with an externally recirculating fluidized bed and used to encapsulate particulate matter suspended in the fluidized bed with dense and well-adhered thin films. The effect of the FBCCVD process variables on the encapsulated powder properties, deposition efficiency, and production rate will be investigated. Inexpensive powders with functionalized surfaces are in high demand for decorative, optical, specialty chemicals, and electronics applications. The powder market is estimated to be over a billion dollar market annually and represents a growing segment. Success of the proposed research will result in a new FBCCVD process that could facilitate inexpensive production of encapsulated powders.