![]() ![]() Solids can also form random structures which do not maintain any specific order, and this is what we call amorphous materials. However, not every solid material tends to form crystals. Materials placed at the top of the pyramid offer the best overall performances (mechanical properties, thermal stability, chemical resistance, etc.), but– as a rule of thumb– are also the most expensive and require the highest processing temperatures. Horizontally, by crystallinity: Semi-crystalline vs Amorphous, sometimes adding Elastomers.Vertically, by performance: Standard or Commodity, Engineering, High-performance, and sometimes Ultra-high performance.Most of these pyramids, however, classify thermoplastics in the same ways: There are dozens of versions of this pyramid on the web, each one with varying complexity and detail. The diagram above is a widespread tool used to sort out the numerous plastic polymers available today and improve critical decision-making processes in the industry. What better way to start than by introducing thermoplastics through the following pyramid: This non-exhaustive pyramid lists a few of the most commonly used thermoplastics in AM. Sometimes, the use of simple diagrams is the best way to get into a complex subject like semi-crystalline vs amorphous plastics. A Brief Overview of the Thermoplastics Pyramid ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |