Theory one/notes

Alex Bennett-Ford

Polymers

.Polymers come from crude oil, crude oil is a non renewable source 

.Plastics are manufactured using a process called polymerisation. Polymerisation occurs when monomers join together to form long chains of molecules called polymers. 

General summary of plastics

.Good electrical and thermal insulators 

.Good strength to weight rati

.Generally good resistance to atmospheric and chemical erosion

.Low melting point

. Lightweight 

Available in a wide range of colours and transparency

.Two main categories: thermoplastics and thermosetting plastics  

Fillers: These are added to the polymer powder to give the material some more bulk

Flame retardants: These are used to reduce the risk of combustion

Anti static agents: Reduce the effects of static charges that can build up in a product 

Plasticisers: These make the material less brittle 

Stabilisers: Reduce the effects of ultra violet light found in sunlight 

Powerpoint presentation on my design chair

I wish I never bought...

 Apple headphones

Apple is a global company that are very popular and well known, they are based in California, America. They produce electrical products such as Computers, ipads, ipods and headphones.

On average they sell a product every 3.5 seconds.

The Apple headphones may be betrayed as something special because of their background as I stated above but in my opinion they aren't. I purchased a pair about 2-3 months ago and to be fair nothing was wrong with them to start off with but gradually they started messing up, by that I mean the sound started buzzing and making crackling noises. It was annoying considering I paid £14.00 for them. I thought if I left it a night it would be better. So the day after I connected my Apple headphones to my phone and started playing music, it started working and playing properly, I was so relieved but then unsurprisingly they completely cut out and my music stopped.

They still don't work to this day.

I'm sure all the headphones aren't like this but mine was. I never looked at any reviews or there history on the internet and was fooled by there background and presumed they would be good. They certainly looked attractive but didn't perform well at all.

I wish I never bought them.