A molecule of diisocyanate and a molecule of diol form the monomer of the polyurethane. These monomers form a chain through the process of polymerization and are characterised by the group "urethane linkage".
CODE OF RECYCLE
The remains of polyurethane products can be ground and agglomerated into different blocks of polyurethane, which will be employed for less valuable uses.
In other cases they can be incinerated in order to obtain energy.
RECYCLE AND ITS PRODUCTS
COMMERCIAL USES AND PRODUCTS
The flexible foams of polyurethane (and also stiff polyurethane) are used in different fields of activity to make various types of objects , thanks to their characteristics:
2) HIGHLY INSULATING
3) RESISTANT TO LOADING
4) SHAPE STABILITY
(it quickly gets back to its original shape after being pressed)
POLYURETHANE FOR A BETTER AND CHEAPER FUTURE?
RISKS FOR THE ENVIRONMENT AND FOR THE HEALTH
-The combustion of polyurethane has toxic effects on human health, wildlife, soil and crops.
-The main dangers caused by burning polyurethane are the release of carbon-monoxide and reduction of oxygen in the air.
-Some of the gases released are likely to cause cancer if the person has been exposed to huge doses for a long time.
(the most used insulating material in fridges and freezers in the form of panels)
4 D LING A.S. 2018/2019
nations where PU is used in huge amounts
nations where PU is used in small amounts or not used at all
nations where PU is used in huge amounts and its use is increasing
HOW MUCH MATERIAL CAN WE SAVE USING PU PRODUCTS?