Thermoplastics are a subset of plastics that can be re-shaped with the application of pressure and heat multiple times. Different types of thermoplastics have additional properties that make them especially well-suited to different jobs, but all thermoplastics share the same characteristic of flexibility when exposed to heat and force.
Thermoplastics are also known as thermosoftening plastics because they become malleable when heated. Although they are pliable above a certain heat threshold, they return to a solid once they have been sufficiently cooled. This is a contrast to most other types of plastic, which are unable to return to a solid state after they have been heated beyond a certain point. For this reason, thermoplastics are put to unique uses in a number of manufacturing and engineering industries.
Apart from their primary characteristics, thermoplastics vary slightly in usage and properties. For example, polystyrene is a hard, water-resistant thermoplastic, according to BBC. This makes it an excellent choice for creating toy models and for packaging that will not be exposed to extreme heat sources in transit. Polymethyl methacrylate is also a stiff thermoplastic, but it is also an electrical insulator and can be polished well, so it is often used in vehicle windows and light covers.Learn More
The most common properties of rubber are its elasticity, resistance to water and its use as an electrical insulator. When raw rubber is heated, it becomes sticky, and when it is in colder temperatures, it tends to break, just like the synthetic variety.Full Answer >
Some of the properties of iron are that it is malleable, which means it can be hammered into thin sheets, and ductile, which means it can be pulled into lengths of wire without snapping. It is also unusual in that it can be magnetized.Full Answer >
Some of the atomic chemical properties of the element zinc include a nonbonded atomic radius of 2.01 and covalent radius of 1.20; an unstable electron affinity and electronegativity of 1.65 based on the Pauling scale; and its first eight increasing ionization energies listed at 906.402, 1733.3, 3832.687, 5731.2, 7969.7, 10420, 12929 and 16788 kJ mol-1. Zinc is a transition metallic element.Full Answer >
Aluminum is a lightweight, ductile metal with a density roughly one-third that of steel. Despite its low density, aluminum is strong for its weight and can easily be alloyed with other metals to produce useful compounds.Full Answer >