Plastic Materials (2.5 days + online reviews + exam)
The Plastic Materials course is designed to give students a solid foundation for understanding polymer families, their corresponding material properties, plastic rheology, and shrink and warp characteristics. The course begins with a discussion on creating polymers from monomers, followed by the importance of molecular weight to your part’s performance and processing characteristics. The course then dives into material drying requirements and measurement, additives, viscosity, and rheology (study of plastic flow). Students will learn what makes some polymers amorphous and others semi-crystalline, and how those classifications affect material properties, processing, mold design, and part design. Finally, the course will teach students to understand and recognize volumetric vs. orientation-induced shrinkage, and how each causes plastic parts to warp. They will then learn strategies for reducing warp by evaluating options in material selection, mold design, processing, and part design.
Topics include, but are not limited to:
- Polymerization methods
- Temperature properties such as Tg and Tm
- Amorphous versus semi-crystalline materials
- Molecular weight
- Drying plastics & measuring moisture content
- Crystallinity and its effect on material properties
- Plastic flow characteristics
- Shrink and warp
6100 West Ridge Road Erie, PA
*course location subject to change
If you are interested in participating in this apprenticeship program, please contact Lance Hummer, Executive Director at the Keystone Community Education Council, by emailing [email protected] or calling 814.677.4427.