- published: 24 Jun 2014
- views: 317084
Polystyrene ( /ˌpɒliˈstaɪriːn/; IUPAC poly(1-phenylethene-1,2-diyl)) also known as Thermocole, abbreviated following ISO Standard PS, is an aromatic polymer made from the monomer styrene, a liquid hydrocarbon that is manufactured from petroleum by the chemical industry. Polystyrene is one of the most widely used plastics, the scale being several billion kilograms per year.
Polystyrene can either be a thermoset or a thermoplastic. A thermoplastic polystyrene is in a solid (glassy) state at room temperature, but flows if heated above its glass transition temperature of about 100 °C (for molding or extrusion), and becomes solid again when cooled. Pure solid polystyrene is a colorless, hard plastic with limited flexibility. It can be cast into molds with fine detail. Polystyrene can be transparent or can be made to take on various colors.
Solid polystyrene is used, for example, in disposable cutlery, plastic models, CD and DVD cases, and smoke detector housings. Products made from foamed polystyrene are nearly ubiquitous, for example packing materials, insulation, and foam drink cups.
The colors have built up in my mind
They're bleeding through my heart
And nobody knows that they exist
Look at my bursted veins
Now do you see the red in me
It's a sign for the end
Only the end of the red
Will show you my blue side
I've been given my brush and plate
But where will i paint my life
And will the buyer in the sky
Believe in what i dream
And it's so hard for me to explain
What i will miss