Shape memory polymers and automotive decorative films derived therefrom

形状记忆聚合物和由其衍生的汽车装饰膜

• 批准号: 428603-2011
• 负责人: Thompson, Michael
• 金额: $ 5.27万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=532589
• 关键词: Shape; memory; polymers; automotive; decorative

Transitioning the automotive sector away from the costly and environmentally questionable practice of paint has seen the emergence of a technology known as in-mold forming which applies decorative polymer films onto complex parts with comparable aesthetic finishes. The technology intends to offer an uncomplicated, one-step process for rapid production of high-quality parts with Class 'A' finishes or even complex textured appearances. However, the thermo-mechanical environment to which these films are subjected as they are stretched and heated places new demands on their construction and there is little fundamental understanding for guidance on how a film laminated metal or plastic sheet will stretch and form in this environment. A previous NSERC CRD, now in its final year of completion, has been studying the issues that arise for these films as they are formed into metal or plastic parts, highlighting the complexities of avoiding wrinkling, color/gloss losses, adhesive debonding and film crack propagation. The industrial sponsor feels that their new developments into a very interesting area of polymer architecture known as 'shape memory polymers' will bring forth the next generation of decorative films for commercial use, minimizing or avoiding the problems found in forming current generations of films. As this is a new direction for film chemistry, the multitude of variables affecting the molecular architecture of a shape memory polymer need to be put into context with the thermo-mechanical environment for their forming of new automotive parts. In this regards, the proposed project will study how controlled variables of the molecular architecture for said polymer relate to the formability of the generated films. In addition, the work will seek to gain deeper fundamental knowledge into the relationship which the adhesive layer plays in metal and plastics forming operations as shape memory films are heated and deformed. The project will supply to the workforce highly skilled persons trained in the forming technology and armed with knowledge of these new polymers, to help implement the findings of this work into automotive companies targeted for use of this process as well as help bolster the technical staff of the film producer itself.

为了使汽车行业摆脱昂贵且对环境有问题的油漆做法，模内成型技术的出现将装饰性聚合物薄膜应用到具有可比美学效果的复杂零件上。 该技术旨在提供一种简单的一步流程，用于快速生产具有“A”级饰面甚至复杂纹理外观的高质量零件。然而，这些薄膜在拉伸和加热时所经历的热机械环境对其结构提出了新的要求，并且对于层压金属或塑料片材的薄膜如何在这种环境中拉伸和成型的指导知之甚少。 之前的 NSERC CRD 现已完成最后一年，一直在研究这些薄膜在形成金属或塑料零件时出现的问题，强调避免起皱、颜色/光泽损失、粘合剂脱粘和薄膜裂纹的复杂性传播。工业赞助商认为，他们在聚合物结构的一个非常有趣的领域（称为“形状记忆聚合物”）的新发展将带来下一代商业用途的装饰薄膜，最大限度地减少或避免形成当前几代薄膜时发现的问题。由于这是薄膜化学的新方向，因此需要将影响形状记忆聚合物分子结构的众多变量与新汽车零件形成的热机械环境结合起来。 在这方面，拟议的项目将研究所述聚合物的分子结构的受控变量如何与所生成的薄膜的可成型性相关。 此外，这项工作还将寻求获得更深入的基础知识，了解当形状记忆薄膜被加热和变形时，粘合剂层在金属和塑料成型操作中所起的作用。 该项目将为劳动力提供经过成型技术培训并具备这些新型聚合物知识的高技能人员，以帮助将这项工作的结果落实到目标使用该工艺的汽车公司，并帮助加强汽车公司的技术人员队伍。电影制片人本身。