Given the table below and your judgement for extreme operational conditions, select polymers for the following applications respectively: a dry ice bucket (operating temperature of -78C), a teeth aligner, a hair dryer (operating temperature range of 60-80C) and a phone case. Table 15.2 Melting and Glass Transition Temperatures for Some of the More Common Polymeric Materials Material Polyethylene (low density) Polytetrafluoroethylene Polyethylene (high density) Polypropylene Nylon 6,6 Polyester (PET) Poly(vinyl chloride) Polystyrene Polycarbonate Glass Transition Temperature [°C (°F)] -110 (-165) -97 (-140) -90 (-130) -18 (0) 57 (135) 69 (155) 87 (190) 100 (212) 150 (300) Melting Temperature pc (F)] 115 (240) 327 (620) 137 (279) 175 (347) 265 (510) 265 (510) 212 (415) 240 (465) 265 (510) Ⓒa. PTFE, HDPE, HDPE, polypropylene b. Polypropylene, PET, PTFE, Polypropylene OC. Nylon, PET, HDPE, PVC Od. HDPE, LDPE, LDPE, PTFE De. LDPE, PTFE, Nylon, polypropylene

Q: gf What is the tenacity in of den that ruptures under a load of S Provide your answer with tv

A: Given Data : Linear density of fiberρ=3.2 tex Load(F)=94.8 gf

Q: Thermal plastics are stronger than thermoset plastics.

A: No, Thermal plastics are not stronger than thermoset plastics.

Q: Why do crystalline polymers tend to have higher density than amorphous ones?

A: In crystalline polymers, polymer chains are closely and tightly packed in a regular manner unlike…

Q: nsity of 1.12 g/cm³ and a weight-average mole sity of 1.10 g/cm³ and a weight-average mole

A: It is possible to detect which polymer has a higher melting temperature than another. Isotactic…

Q: Lean manufacturing is a concept that is now widely implemented within manufacturing. Discuss how…

A: lean manufacturing can help in improving the performance of Polymer production facility by following…

Q: Identify a minimum of two structural characteristics and two mechanical characteristics that set…

A: Elastomers are basically the subclass of polymers that possess elastic properties. Elastomers…

Q: Problem 5 Compare thermoplastic and thermosetting polymers (a) on the basis of mechanical…

A: *Answered and explained already above.

Q: Identify which is typically tougher: a semicrystalline or an amorphous polymer.

A: The difference between the given polymer types lies in their molecular structure. Amorphous material…

Q: A new composite material is to be manufactured from carbon fibre and resin component materials. The…

A: Given data: EC=8.25 GPaEf=142 GPaER=5.42 GPa Need to determine the relative volume fraction of…

Q: What are the differences between addition polymerization and condensation polymerization?

A: The main difference between addition and condensation polymerization is that in addition…

Q: Illustrate the difference between crystalline and amorphous polymers structure and explain the…

A: To explain: The difference between crystalline and amorphous polymer structure. Explanation:…

Q: Why do thermoplastic polymers start to turn white as they are plastically deformed?

A:

Q: There are three main sub-groups of engineering polymers with distinct differences in their…

A:

Q: Explain how macroscopic plasticity occurs in polymers from the point of view of microscopic…

A: Plasticity in a crystal of pure metal is basically the outcome of two modes of deformation in the…

Q: 8. a. DEHP can make PVC more flexible. Explain what happens at the molecular level that can explain…

A:

Q: For a glass/epoxy lamina with a 70% fiber volume fraction using the properties in the tables…

A: Solution: Given Data:

Q: State the critical difference in the processing behavior of thermoplastics vs. thermosets.

A: The primary physical difference is that thermoplastics can be remelted back into a liquid,…

Q: (i) What other materials properties would you need to consider in choosing the best lightweighting…

A: The higher service temperature is nothing but the application of equipment at elevated temperatures.…

Q: Why do crystalline polymers tend to have higher density than amorphous ones?

A: crystalline polymers tend to have higher density than amorphous ones because-

Q: able 11.3. The engineering constants in Example 11.1 E, (GPa) E2 (GPa) G12 (GPa) V12 Nominal (v =…

A: Given dataVf=0.6Vm=0.4E1=148GPaE2=9.65GPaG12=4.55V12=0.3we know thatE1=VfEf+VmEm148=0.6Ef+0.4Em…

Q: Outline THREE advantages of using carbon fibre composites, in preference to other materials, in…

A: Carbon fiber composites are being used more often by commercial airlines to construct airplane…

Processing of Polymer Matrix Composites

The polymer matrix composite is described as a composite material that contains some polymer in the form of either fibers or powder. Polymer matrix composites are also known in short as PMC's.