Novel energetic polymers and their blends

新型含能聚合物及其共混物

• 批准号: RGPIN-2015-05147
• 负责人: Dubois, Charles
• 金额: $ 2.55万
• 依托单位: École Polytechnique de Montréal
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=649647
• 关键词: Novel; energetic; polymers; their; blends

The turn of this new century has seen energy storage and release, security issues and access to space emerged as new preoccupations.   Polymer based materials have an important role to play in the novel technologies being developed to address these concerns. Energetic polymers are defined as polymers that produce a significant amount of energy during their short decomposition time, often owing to the presence of azide and nitro groups on their backbone. They are not explosives materials per say, but they find use as binders or core components in solid propellants, explosives formulations, and gas generator compositions for explosive actuated safety devices. Usually, energetic polymers are mixed with oxidizers and solid fuels to tailor their energy release process.  *** ***This continuing research program is aimed at developing innovative processes and materials allowing for an increased use of polymers in the field of energetic materials. Over a 5 to 7 years horizon, my objective is obtain novel polymer based energetic materials that can be safely processed and used with minimal environmental costs. About 30 years ago, energetic polymers have received a lot of attention from the development of a handful of now mature thermoset products that often contains azide groups. Most plastics or polymer-rich products are designed to meet specific mechanical and/or barrier properties. Energetic plastics and elastomers must, in addition, also reach satisfactorily combustion properties. These two criteria have so far been almost impossible to obtain in a single thermoplastic product, as the chemical composition that enhances the decomposition process of a polymer, such as the presence of nitro groups, is also detrimental to mechanical properties due to a reduced cristallinity. To break this paradigm, we propose to recall to polymer blends and complex multi-phase materials. This approach has been shown to be very successful in conventional plastics, where blending, alloys and core-shell technologies are now regularly employed. The objective of this program will be to develop novel energetic polymer blends for either thermoset or thermoplastic transformation processes. Our efforts will be deployed on two fronts: 1) the blends of existing energetic polymers and 2) the synthesis of new energetic polymers to enlarge the set of possible blends to investigate. A special attention will be given to polytetrazoles and polytriazoles as they can be produced using a "click chemistry" approach. The envisaged research will be driven with an emphasis on recyclability and reduced environmental footprint. It offers opportunities to increase our fundamental knowledge about multiphase energetic polymer blends.  Smart, safer and recyclable airbags, hypervelocity propulsion systems, advanced thrusters for micro-satellites, environmentally friendly high density explosive compositions are examples of potential applications. ********

这个新世纪的转弯已经看到了储能和释放，安全问题以及进入空间的途径，成为新的捕获。基于聚合物的材料在开发出解决这些问题的新技术中起着重要作用。能量聚合物被定义为聚合物在短时间分解时间内产生大量能量的聚合物，这通常是由于骨干上存在叠氮化物和硝基基团。它们不是爆炸物材料，但他们发现用作固体推进剂，炸药公式和气体发生器组成的粘合剂或核心成分，用于爆炸性激活的安全装置。通常，能量聚合物与氧化剂和固体燃料混合，以调整其能量释放过程。 *****该持续研究计划旨在开发创新的过程和材料，允许在能源材料领域增加使用聚合物。在5到7年的地平线上，我的目标是基于新型聚合物的新型能量材料，可以安全地处理并以最低的环境成本使用。大约30年前，充满活力的聚合物从现在通常包含叠氮化物组的现在成熟的热固性产品的发展中引起了很多关注。大多数塑料或聚合物富含产品旨在满足特定的机械和/或屏障特性。此外，必须达到令人满意的组合特性，精力充沛的塑料和弹性体必须达到令人满意的组合。到目前为止，这两个标准在单个热塑性产物中几乎是不可能获得的，因为增强聚合物分解过程的化学组成（例如硝基基团的存在）也对机械性能降低，这也是降低的机械性能。为了打破这种范式，我们建议回顾聚合物混合物和复杂的多相材料。在常规塑料中，这种方法已被证明非常成功，在这种塑料中，现在定期使用混​​合，合金和核心壳技术。该程序的目的是开发用于热器或热塑性转化过程的新型能量聚合物混合物。我们的努力将在两个方面部署：1）现有的能量聚合物的混合物和2）合成新的能量聚合物以增强可能进行调查的一组可能的混合物。可以使用“点击化学”方法对聚四唑和聚三唑的特殊注意力。所设想的研究将被驱动，重点是可回收性和降低的环境足迹。它提供了增加我们对多相能量聚合物混合物的基本知识的机会。智能，安全和可回收的安全气囊，超速推进系统，用于微型卫星的高级推进器，环保的高密度爆炸性组成是潜在应用的示例。 *****