Polymers Intro Flashcards
1
Q
What are the the two types of polymers
A
Thermo polymers
Thermosetting polymers
2
Q
Characteristics of thermo polymers
A
1) POLYMER MEMORY- retutn to OG shape after reheated
2) Can be heated and moulded as many times as wanted.
3
Q
Characteristic of thermosetting polymers
A
1) Undergo a chemical change when heated to become hard.
2) Only heated and moulded once.
4
Q
What is a polymer
A
A substance that has its MOLECULAR STRUCTURE built up of SIMILAR smaller units - MONOMERS- BONDED together.
5
Q
Why is polymer a suitable material for the industry
A
1) They can be engineered to have SPECIALISED properties:
»» solubility, strength, stiffness, flexibility, conductance)
2) Cost effective
3) Usually easy to process.
»> == high quality products in low cost.
