Plastics and their Properties Flashcards
What is the property of density in a plastic?
It is the relationship between the weight and volume/size of the material.
What is the property of shrinkage in a plastic?
It is the degree to which a material reduces in size after forming
What is the property of transparency in a plastic?
The ability of the material to transmit light.
What is the property of plasticity in a plastic?
It is the ability of a material to be easily shaped or moulded.
What is the property of lubricity in a plastic?
It is the capacity for reducing friction.
What are some thermosetting plastics?
Epoxy Resin (ER), Melamine Formaldehyde (MF), Polyester Resin (PR), Urea Formaldehyde (UF).
(MFUFER PR)
What are some thermosetting plastics?
Acrylonitrile Butadiene Styrene (ABS), Cellulose Acetate (CA), Polyamide (PA) [Nylon], Polyethylene (HDPE), Polyethylene (LDPE), Poly-methacrylate (PMMA) [Acrylic], Polypropylene (PP), Polystyrene (PS), Polyvinyl Chloride (plasticised), Polyvinyl Chloride (uPVC).
What can be said about Epoxy Resin (thermosetting)?
It has low shrinkage, good adhesive qualities and is commonly used in surface coatings, encapsulation, lamination and bonding applications.
What can be said about Melamine Formaldehyde (thermosetting)?
It is tasteless, waterproof, odourless, scratch resistant and a good electrical insulator. It is commonly used in worktops, buttons on clothing, tableware and electrical insulation.
What can be said about Polyester Resin (thermosetting)?
It is brittle, hard, stiff, electrical insulator and can be formed without heat or pressure. Commonly used in car body panels and hulls for boats.
What can be said about Urea Formaldehyde (thermosetting)?
It is brittle, hard, stiff, electrical insulator, good adhesive quality. It is commonly used in electrical fittings, paper and textile coatings, wood adhesive.
What can be said about Acrylonitrile Butadiene Styrene (Thermoplastic)?
It is chemically resistant, durable, strong, scratch resistant and has a high surface finish. It is commonly used in cases for products, helmets, kitchenware and telephones.
What can be said about Cellulose Acetate (Thermoplastic)?
Flexible, hard, light, tough and transparent. It is commonly used in containers, packaging and photographic film.
What can be said about Polyamide [Nylon] (Thermoplastic)?
It is durable, tough, easily machined and self-lubricating. Commonly used in bearings, bristles, clothing, gears and upholstery (textiles).
What can be said about Polyethylene [HDPE] (Thermoplastic)?
It is chemically resistant and tough. Commonly used in rigid- buckets, containers and bowls.
What can be said about Polyethylene LDPE?
It is soft, pliable and it is an electrical insulator. It is commonly used in flexible- bags, bottles, sheathing for electrical cables and toys.
What can be said about Poly-methacrylate [Acrylic] (Thermoplastic)?
It is stiff, hard, clear, durable, is easily machined and polished and is easily scratched. It is commonly used in cases, jewellery, reflectors and lenses for lights and signs.
What can be said about Polypropylene (Thermoplastic)?
It is chemically resistant, light, rigid, resistant to bending and fatigue. Commonly used in crates, seats, medical equipment, kitchen chopping boards and hinges.
What can be said about Polystyrene (Thermoplastic)?
It is buoyant, light, stiff and water resistant. It is commonly used in containers, packaging, toys and insulation.
What can be said about Polyvinyl Chloride [Plasticised] (Thermoplastic)?
It is soft, flexible and an electrical insulator. It is commonly used in hosepipes and wire insulation.
What can be said about Polyvinyl Chloride [uPVC] (Thermoplastic)?
It is abrasive resistant, rigid and water and weather resistant. It is commonly used in bottles, guttering, pipes and window frames.
