True or False. All plastics, thermoplastic or thermoset, will degrade at some te

Question

True or False. All plastics, thermoplastic or thermoset, will degrade at some temperature? a) False 13. b) True 14. For any sample of plastic, it is generally too costly to count the number of repeating units on each of the polymer chains. Instead, for processing reasons, which value is given to designate polymer chain length? a. Sample Density b. Melt Index c. Molecular Weight Distribution d. Parts Per Pound 15. Values derived from a melt index test can be used as a valid measurement when a. compared between plastics of differing chemical structures b. compared between plastics of similar chemical structures c. for personal use only d. compared between different grades of the same plastic 16. When a fluid is said to have a high viscosity that means that it a. Flows quickly, like water b. Flows slowly, like honey c. Is slightly yellow or tan, like motor oil

Explanation / Answer

13) False

14) Molecular Weight Distribution.

15) Compared between plastics of differing chemical structure.

16) Flows slowly, like honey.

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