1- Draw the repeat (mer) unit for the following thermoplastics: PP, PA, PMMA, PTFE, SBS,POM, PEEK, PMMA, PEI and PC.2- A stress of 2500 psi is applied to a polymer serving as a fastener in a complex assembly.At a constant strain, the stress drops to 2400 psi after 100 h. If the stress on the partmust remain above 2100 psi in order for the part to function properly, determine thelife of the assembly.3- List at least 30 thermoplastic materials with name and symbol.4- Draw the repeat (mer) unit for the following thermoplastics: Polyethylene terephthalate(PET), Amine, Bakelite, Epoxy, Phenolic (PF), Polyester, Polyurethane (PUR), and VinylEster.

The repeat unit of PP The repeat unit of PA

Answered: Draw the repeat (mer) unit for the…

Engineering

Mechanical Engineering

Draw the repeat (mer) unit for the following thermoplastics: PP, PA, PMMA, PTFE, SBS,

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

The Space Lattice and Unit Cells

Every matter consists of atoms, molecules, and ions. If these atoms, molecules, and ions (micro-particles) are represented in a three-dimensional space-occupying certain specific points in space, then these arrangements are termed as space lattices and the specific points which are being occupied by atoms, molecules and ions are termed as lattice points. The atoms, molecules, and ions at the lattice points are generally grouped in a regular fashion and repeat periodically at the three-dimensional space.

Question

1- Draw the repeat (mer) unit for the following thermoplastics: PP, PA, PMMA, PTFE, SBS,
POM, PEEK, PMMA, PEI and PC.
2- A stress of 2500 psi is applied to a polymer serving as a fastener in a complex assembly.
At a constant strain, the stress drops to 2400 psi after 100 h. If the stress on the part
must remain above 2100 psi in order for the part to function properly, determine the
life of the assembly.
3- List at least 30 thermoplastic materials with name and symbol.
4- Draw the repeat (mer) unit for the following thermoplastics: Polyethylene terephthalate
(PET), Amine, Bakelite, Epoxy, Phenolic (PF), Polyester, Polyurethane (PUR), and Vinyl
Ester.

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