Polymeric materials (PLASTICS)
Artificial materials derived from organic chemistry.
They are made up of long-chain molecules, called monomers or groupers, chemically linked by covalent and ionic bonds.
Industries in which plastics are used:
In the automotive industry.
In the transport sector.
In telecommunications.
In the food sector.
In the fishing sector.
In the agricultural sector.
In the domestic sector.
In the construction sector.
In photography.
In the packaging sector, etc.
Advantages and disadvantages of plastics vs. metals
Advantages:
Low weight
Fast and easy processing
High resistance to corrosion and chemicals
Good electrical properties
Excellent surface characteristics
High vibration absorption
Cost-effective production
Disadvantages:
Low mechanical resistance
Low heat resistance
Low resistance to degradation
Not repairable
High cost of raw material
Plastics raw materials
They are natural substances such as: petroleum, natural gas, mineral coal, cellulose, rubber tree, etc. The molecules of these substances generally contain carbon (C) and hydrogen (H) and often contain nitrogen (N), oxygen (O), sulfur (S), etc.
Source: www.utp.edu.co