FAA AMT Airframe Practice Exam 2026 – All-in-One Study Guide to Master Aviation Maintenance Technician Certification!

Thermoplastics are a category of plastic materials that can soften or flow when reheated. This unique property distinguishes them from thermoset plastics, which harden irreversibly upon heating. Elastomers are polymers with elastic properties, known for their ability to return to their original shape after being stretched or compressed. Fiberglass, on the other hand, refers to a composite material made of glass fibers embedded in a resin matrix and is not a category of plastic material.