SBIR Phase I: Innovative Selective Laser Sintering Rapid Manufacturing Technique Using Nanotechnology

SBIR 第一阶段：利用纳米技术的创新选择性激光烧结快速制造技术

• 批准号: 0419557
• 负责人: Joseph Koo
• 金额: $ 10万
• 依托单位: Koo & Associates Internatinal, Inc.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-07-01 至 2005-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0419557&HistoricalAwards=false
• 关键词: SBIR; Phase; Innovative; Selective; Laser

This Small Business Innovation Research (SBIR) Phase I project will use a rapid manufacturing method to produce high performance structural components. This process will combine nanotechnology with Selective Laser Sintering (SLS), and a Rapid Prototyping (RP) additive layered build fabrication method. The use of SLS RP technique will facilitate true, flexible manufacturing of small batch of parts, while avoiding product-line tooling, under utilization of skilled labor and the need to maintain high overhead facilities costs. The SLS rapid manufacturing method will contribute to the concept of just in time manufacturing as well as lean manufacturing. Current thermoplastic polymer powders (Nylon 11 or Nylon 12) used in SLS are lacking in fire resistance and high strength/high heat resistance characteristics. It is anticipated that nanomodification of Nylon 11 will result in the expected polymer performance characteristics, i.e., fire resistance, high strength and high heat resistance for Nylon 11 and will expand the market opportunities for SLS users and Nylon 11 resin manufacturers. The broader impacts from this technology could be an unique, low specific gravity polymer powders (Nylon 11) that are fire-resistant, possess high strength and high heat resistance that ordinarily require large amounts of flame retardant additives as well as large amounts of reinforcing agents, and additives. The use of nanoparticles avoids the use of hazardous flame retardant additives such as halogenated or nitrogen/phosphorous materials, all of which contribute to smoke and toxicity when burning. Use of small amounts of nanoparticles (~7%) provides sufficient strength and heat resistance as compared to 20 to 30% conventional inorganic filler (glass fiber, mineral fiber, etc). The multifunctional characteristics of the nanoparticles could lead to low specific gravity polymer powders and substantial weight savings in finished part fabrication. This new rapid manufacturing method will be greatly embraced by SLS users who are qualified to provide parts to the U.S. Defense Industry. The ability to quickly and economically provide spare parts for aging legacy weapon systems through a seamless procurement mechanism of just in time could produce enormous cost savings.

该小型企业创新研究（SBIR）第一阶段项目将使用快速制造方法生产高性能结构部件。 该工艺将联合收割机纳米技术与选择性激光烧结（SLS）和快速原型（RP）添加剂分层构建制造方法相结合。SLS RP技术的使用将有助于小批量零件的真正灵活的制造，同时避免了生产线工具，利用熟练的劳动力和维持高开销设施成本的需要。SLS快速制造方法将有助于及时制造以及精益制造的概念。目前用于SLS的热塑性聚合物粉末（尼龙11或尼龙12）缺乏耐火性和高强度/高耐热性特性。预计尼龙11的纳米改性将产生预期的聚合物性能特征，即，尼龙11的阻燃性、高强度和高耐热性，将为SLS用户和尼龙11树脂制造商扩大市场机会。 该技术的更广泛影响可能是一种独特的低比重聚合物粉末（尼龙11），具有耐火性，高强度和高耐热性，通常需要大量的阻燃添加剂以及大量的增强剂和添加剂。使用纳米颗粒避免了使用危险的阻燃添加剂，如卤化或氮/磷材料，所有这些材料在燃烧时都会产生烟雾和毒性。与20%至30%的常规无机填料（玻璃纤维、矿物纤维等）相比，使用少量的纳米颗粒（~7%）提供了足够的强度和耐热性。纳米颗粒的多功能特性可以导致低比重聚合物粉末和成品部件制造中的显著重量节省。这种新的快速制造方法将受到有资格为美国国防工业提供零件的SLS用户的极大欢迎。通过及时的无缝采购机制，快速、经济地为老化的传统武器系统提供备件的能力可以节省大量成本。