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.Know More
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 about Chemistry
Polystyrene has a number of properties: it has a low melting point, it is translucent before tint is added, and it is hard and brittle. Depending on the application it is used for, Polystyrene's properties will change. It is rigid, but when heated to 100 Celsius, it becomes a flowing liquid.Full Answer >
Properties of paper include the thickness, weight, texture, folding endurance, strength and size of the paper. Some grades of paper tear easily, while others resist tearing. The moisture retention capacity is another important property of paper. Some grades of paper dry very quickly and do not absorb moisture.Full Answer >
Solids, liquids and gases are the three main phases of matter. Solids have a fixed crystalline structure, whereas liquids and gases are more free-flowing. The phase of matter that a given substance exhibits depends on temperature and pressure.Full Answer >
Methane is lighter than air and has a specific gravity of 0.554. Methane’s chemical formula is CH4. It is a colorless and odorless gas that is produced abundantly in nature.Full Answer >