Download SGBAU B-Tech 8th Sem Poly Plast Testing n Product Design For Plastics Question Paper

B.Tech. Eighth Semester (Polymer (Plastic) Technology) (CGS)
11148 : Professional Electivc-II : Testing & Product Design for Plastics : 8 PP 03
P. Pages : 2
Time: Three Hours
AW - 3507

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HWAWM-mla ?m Max. Marks : 80
Notes :
a)
b)
b)

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AW - 3507 - 1 P.T.O
1 All question carry marks as indicated.
2 Answer three question From Section A and three question from Section B.
3 Due credit will be given to neatness and adequate dimensions.
4. Assume suitable data wherever necessary.

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5. Diagrams and Chemical equations should be given wherever necessary.
6 Illustrate your answer necessary with the help of neat sketches.
7 Discuss the reaction, mechanism wherever necessary.
8 Use of pen Blue/Black ink/re?ll only for writing the answer book.
SECTION - A

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How will you select the polymers on the basis of strength and stiffness? Also derive the
equation for desirability factors.
Explain in detail the difference between metals and polymers.
OR
What are the types of fracture? Explain in detail the Grif?th's theory of fracture.

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Discuss the stress-strain curve for following plastic material:-
i) Polyacetal ii) Polycarbonate
iii) P'I'F E iv) Polypropylene
Explain the followings with its test procedure and signi?cance and also discuss in short
the factors affecting on it.

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i) Flexural strength ii) Tensile strength.
0R
Explain in detail the test procedure, signi?cance and factors affecting for Are Resistance.
Discuss the concept of tensile creep and fatigue in plastics with the help of suitable
example.

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Explain in detail the test procedure, signi?cance and factors affecting the following
propenies:~
i) Hardness ii) Abrasion Resistance.
OR
What is the selection criteria of any plastic material to act as an insulator? Discuss the test

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procedure and signi?cance of Dielectric strength.
Discuss the concept of dissipation factor and volume resistivity for insulating polymers.
1?:

10.

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ll.
12.
a)
b)
a)

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b)
a)
b)
AW - 3507
SECTION - B

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Explain in detail the procedure. signi?cance and factors affecting on the following thermal
properties:-
i) Heat De?ection Temperature (HL) 1?)
ii) Thermogravimetric Analysis (TGA)
0R

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Explain in detail the test procedure. signi?cance and factors affec1ing on following test
mehodz-
i) Solvent stress crack resistance
ii) Refractive Index.
Discuss with suitable example the aspect of following properties during product design

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with plastics?-
i) Flame Resistance ii) Chemical wear
iii) Weathering iv) Permeability
OR
Discuss the selection of material and process selection for designing of plastic edible oil

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can.
Explain the aspect of muis?lure. odour and taste during plastic product design.
Discuss the aspects of folIom'ng while designing plastic products:-
i) Ribs and Bosses ii) Undercuts
Discus?the?VKnous types of gate. Also give the Importance 01 gate posmonmg 1n aeSIgn

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of plastic product.
OR
Discuss in detail the effect of processing parameter on structure, property and quality of
plastic products.
Discuss the runner and runnerless mould system with the help of neat sketch diagram.

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