Industry/University Cooperative Research: Polyurethane and Polyurea Reaction Injection Molding

产学合作研究：聚氨酯、聚脲反应注射成型

• 批准号: 8512120
• 负责人: Chris Macosko
• 金额: $ 50.47万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1985
• 资助国家: 美国
• 起止时间: 1985-11-15 至 1989-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8512120&HistoricalAwards=false
• 关键词: Industry; University; Cooperative; Research; Polyurethane

Reaction injection molding (RIM) is a rapid process for producing large light weight plastic parts that are used for automobile and airplane parts among others. Low viscosity liquid reactants (monomers) are mixed and injected into a mold where they reach and form a solid crosslinked polymer product. The two feed streams impinge on each other at high velocity and thus achieve good mixing. Reaction proceeds as bulk copolymerization resulting in segmented block copolyers. The proposed research is aimed at elucidating the fundamental chemistry and physics involved in RIM. The PIs plan to carry out their work in six stages: (1) Model the mold filling and curing steps; (2) Study the chemistry of polyureas and polyurethanes; (3) Look at the role of phase separation during polymerization in the mold; (4) Study the effects of mixing in the mold (5) Obtain morphology measurements; and (6) Study the bubble motion and growth process in RIM due to injected nitrogen gas. The overall goal is to build a model for the RIM process. During the molding cycle the copolymers must grow into long chains and segregate nto hard and soft phases. The work in this project is the analysis of the combination of polymerization kinetics and phase separation dynamics within a flowing mixing, reacting and heat transferring system. The PIs are all very highly thought of and their laboratory is one of the best in the country for this work. The cooperation with industry provides an excellent input to help keep the project aimed in the proper direction. A three year Industry University Cooperative Research Grant is recommended at $154,682 for FY 86, $174,038 for FY 87, and $164,000 for FY 88.

反应注射成型（RIM）是一种快速生产 用于汽车的大型轻质塑料部件， 飞机零件等。 低粘度液体反应物 （单体）混合并注入模具中， 并形成固体交联聚合物产物。 两个馈电 气流以高速相互撞击， 良好的混合。 反应以本体共聚方式进行 得到嵌段共聚物。 这项研究旨在阐明 化学和物理学的研究。 私家侦探计划 其工作分六个阶段进行：（1）模型的充模和固化 （2）聚脲和聚氨酯的化学研究; (3)看看聚合过程中相分离的作用， （4）研究模具中混合的效果（5）获得 形态测量;（6）研究气泡运动， 由于注入氮气，RIM中的生长过程。 整体 我们的目标是为RIM流程建立一个模型。 在模塑期间 循环共聚物必须生长成长链并分离NTO 硬相和软相。 在这个项目中的工作是分析 聚合动力学和相态的结合 流动混合、反应和热中的分离动力学 传输系统 PI都是非常高的思想和他们的实验室是 全国最好的医生之一 的合作 提供了一个很好的输入，以帮助保持 项目朝着正确的方向发展。 三年行业 大学合作研究补助金建议为154，682美元 86财年为174,038美元，87财年为164,000美元，88财年为164,000美元。