Manufacturing Processes - 1 - Mechanical Engineering (MCQ) questions and answers for Q. 3551

Q.  Which plastic materials contain strong cross linkings in their molecular structure?
- Published on 03 Aug 15

a. Thermoplastic materials
b. Thermosetting materials
c. Both a. and b.
d. None of the above

ANSWER: Thermosetting materials

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    Discussion

  • Debkanta Das   -Posted on 08 Feb 18
    Ok
  • Pankaj   -Posted on 30 Oct 15
    - The molecular structures of thermoplastic and thermosetting materials are different.

    - Thermosetting materials contain strong cross linking in their molecular structure.

    - The plastic becomes rigid and infusible, when these linkings are formed by heat and pressure.

    - Thermoplastic materials have long chains with limited numbers cross linkings.

    - Below diagram shows the molecular structures of thermoplastic and thermosetting materials.



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