PLASTICS3:PLASTICS3:THERMOSETTTHERMOSETT

ING ING PLASTICS.PLASTICS.

Alba Ferrer Sánchez.3º ESO C.

What are What are thermosetting thermosetting

plastics?plastics?Once heated and moulded, these plastics cannot be

reheated and remoulded. The molecules of these plastics are cross linked in three dimensions and this is why they cannot be reshaped or recycled. The bond between the

molecules is very strong.

Epoxy.Epoxy.Water and heat resistant.

Polyurethane.Polyurethane.Tough and water resistant. 

Melamine Melamine Formaldehyde. Formaldehyde. 

Smooth surface and hygienic qualities.

Urea Urea Formaldehyde. Formaldehyde.

Schratch resistant and a very good electrical insulator.

Polyester Polyester resins.resins.

Lightness and toughness.

The difference The difference between between

thermosetting thermosetting plastics and plastics and

thermoplastics:thermoplastics: Thermosetting plastics once heated and

formed to a shape,cannot be reheated and reformed. Consequently, they tend to be difficult

to recycle. Thermoplastics once heated and formed to a

shape, can be reheated and reshaped. Every time they are reshaped, the quality of the

thermoplastic tends to be reduced.They are recyclable.

Website’s links.Website’s links.http://upload.wikimedia.org/wikipedia/commons/7/79/Super_glue.jpg

http://pixabay.com/p-157810/?no_redirect

http://farm5.staticflickr.com/4060/4514230886_d79ab86bc4_o.jpg

http://upload.wikimedia.org/wikipedia/commons/5/51/Thai_TIS_166-2549_mains_plug.jpg

http://fc06.deviantart.net/fs42/i/2009/090/c/0/Sailing_boat_by_panthera_lee.jpg