Author Question: Name three methods of reducing the amount of thermal degradation that might occur in a ... (Read 62 times)

cherise1989 · **on:** Aug 19, 2018

Name three methods of reducing the amount of thermal degradation that might occur in a heat-sensitive plastic. How does each reduce thermal degradation?

What will be an ideal response?

Question 2

Contrast the interatomic or intermolecular forces present in solids, liquids and gases. Explain the consequences of these forces and how these forces are normally overcome.

What will be an ideal response?

zacnyjessica · **Reply #1 on:** Aug 19, 2018

Answer to Question 1

(1)Reduce the amount of regrind (as a percentage) that is used during processing. This assures that the heat history of the total material will never become large, thus reducing the likelihood that degradation from accumulated thermal processing will occur. (2) Add thermal stabilizersmaterial s that preferentially accept the heat and, therefore, reduce the amount of heat encountered by the polymer. (3) Add processing aidsmaterials that facilitate processing, generally by allowing the processing to occur at lower temperatures. Hence, the total amount of thermal energy added to the system is reduced.

Answer to Question 2

In solids the inter-atomic and intermolecular forces are very strong. The particles