Industry-University Cooperative Research: Molding of Thermosets

摘要- Cohen - 9424553 这是一个学术界与工业界联系的赠款机会（GOALI）奖，使PI与工业合作伙伴合作，扩大热固性塑料成型的知识和科学基础。 他们将对基于计算机模拟和成型实验的数值预测进行详细比较，包括使用齐平安装的压力传感器获得的腔体中各个位置的压力与时间的轨迹。 他们将专注于工业上感兴趣的热固性材料，这些材料通常高度填充。 此外，最近开发的快速反应热固性塑料商业微电子器件的塑料包装也将进行调查。 大部分的工作将致力于材料的动力学，流变学和热特性，以确定管理热固性化合物的成型性的关键参数。 数值模拟工作将阐明该过程的物理过程，并允许优化工艺条件。 该项目涉及摩托罗拉，福特汽车公司和先进的CAE技术。 摩托罗拉的技术人员将执行仪器化的螺旋流动实验中的制造传递成型机使用特种环氧树脂开发的封装。 福特的工程师将使用各种热固性材料，如聚酯、酚醛树脂和脲，对保险杠和仪表板进行可控注塑。 结果将与数值模拟进行比较。 先进的CAE技术将与康奈尔大学在材料表征的几个方面进行合作。

Abstract - Cohen - 9424553 This is a Grant Opportunities for Academic Liaison with Industry (GOALI) award to enable the PIs, working with industrial partners, to extend the knowledge and science base available for the molding of thermosets. They will perform detailed comparisons between numerical predictions based on computer simulations and molding experiments, including pressure-versus-time traces at various locations in the cavity as obtained with flush-mounted pressure transducers. They will focus on thermosetting materials of industrial interest which are frequently highly filled. In addition, recently developed fast-reacting thermosets commercially available for the plastic packaging of microelectronics devices will also be investigated. A large fraction of the work will be devoted to the kinetic, rheological, and thermal characterization of the materials in order to determine the critical parameters that govern the moldability of a thermosetting compound. The numerical-simulation work will elucidate the physics of the process and will allow for the optimization of process conditions. The project involves Motorola, The Ford Motor Company, and Advanced CAE Technology. Motorola technical staff will perform instrumented spiral-flow experiments in a manufacturing transfer-molding machine using specialty epoxies developed for encapsulation. Ford's engineers will perform controlled injection molding of bumpers and instrument panels using a variety of thermosets such as polyesters, phenolics and ureas. The results will be compared with numerical simulations. Advanced CAE Technology will collaborate with Cornell on several aspects of the characterization of the materials.