Reactive and Conventional Processing of Polymers

挤出是一种非常重要的聚合物加工操作。传统的挤压涉及熔融， 将聚合物材料均质化和成型成连续的最终塑料产品，如薄膜和 纤维。反应挤出将上述操作与熔体中的反应(S)相结合 用于生产性能增强的新材料的聚合物。典型的应用包括 反应性共混，在其他惰性聚合物上添加官能团，以及分子的改性 重量和结构。每个操作都受材料属性和 加工条件。建议的研究计划的主旨是对以下方面的基本理解 在工业上重要的反应性和常规聚合物加工操作中的这些相互作用。 对这些复杂现象的理解可以引导先进聚合物的优化设计和操作 用于生产具有增强的新型聚合物材料/结构的挤出工艺 属性。本申请中提出的研究工作的目的是研究：(I)反应挤出 (I)聚合物的改性和升级操作；(Ii)采用超临界流体的新型常规和反应挤出操作；(Iii)聚合物复合和(Iv)橡胶脱硫化操作。作为这些研究的结果，将开发工艺模型，以将应用特性与工艺条件联系起来。拟议研究计划的结果将使聚合物树脂制造商、塑料加工商和回收商以及加工设备制造商受益。它将增进我们在聚合物/橡胶制造技术领域的知识，更具体地说，在反应性聚合物挤出、聚合物共混和橡胶脱硫化等重要领域。这些知识将有助于与聚合物化学改性、橡胶回收和聚合物复合相关的技术的发展，从而提高加拿大行业的竞争力，这些元素被行业视为塑料和橡胶下一阶段技术和市场开发的关键要素。

Extrusion is a very important polymer processing operation. Conventional extrusion involves melting, homogenizing and shaping of polymeric materials into continuous final plastic products such as films and fibres. Reactive extrusion combines the previously mentioned operations with reaction(s) in the molten polymer for the purpose of producing new materials with enhanced properties. Typical applications involve reactive blending, addition of functional groups on otherwise inert polymers, and modification of molecular weight and structure. Each operation is governed by underlying interactions between material properties and processing conditions. The main thrust in the proposed research program is the fundamental understanding of these interactions in industrially important reactive and conventional polymer processing operations. Understanding of these complex phenomena can lead to optimal design and operation of advanced polymer extrusion processes for the purpose of producing novel polymeric materials/structures with enhanced properties. The objective of the research work proposed in this application is to study : (i) reactive extrusion operations for modification and upgrade of polymers, (ii) novel conventional and reactive extrusion operations employing supercritical fluids, (iii) polymer compounding and ( iv) rubber devulcanization operations. As a result of these studies, process models will be developed to relate application properties to processing conditions. The outcome of the proposed research plan will benefit polymer resin manufactures, plastics processors and recyclers, and processing equipment manufacturers. It will advance our knowledge in the area of polymer/rubber manufacturing technology and more specifically in the important sectors of reactive polymer extrusion, polymer blending and rubber devulcanization. Such knowledge will boost the competitiveness of the Canadian industry by helping in the evolution of technology related to polymer chemical modification, rubber recycling, and polymer compounding, elements deemed crucial by the industry for the next phase of technical and market development in plastics and rubber.