Download SGBAU B-Tech 7th Sem Poly Plast Polymer Blends n Composites Question Paper

Download SGBAU (Sant Gadge Baba Amravati university) B-Tech/BE (Bachelor of Technology) 7th Sem Poly Plast Polymer Blends n Composites Previous Question Paper

P. Pages : 2
Time : Three Hours
B.Tech. Seventh Semester (Polymer (Plastic) Technology) (CGS)
11137 : Elective - I : Polymer Blends and Composites : 7 PP 04
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Notes :
b)
b)
All question carry marks as indicated.
Answer three question from Section A and three question from Section B.
Due credit ?ill be given to neatncss and adequate dimensions.
Assume suitable data wherever necessary.
Diagrams and chemical equations should be given wherever necessary.
Illustrate your answer necessary with the help ofneat sketches.
Discuss the reaction, mechanism wherever necessary.
Usc ofpen Blue/Black ink/re?ll only for writing the answer book.
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SECTION - A
What are the advantages of polymer blends and alloy? Give the features of polymer blends. 6
What is the criteria for compatibility of polymer blend? Why the polymer blond should be 7
semi compatible?
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Explain in detail any one of the method ofpolymcr blend preparation. 6
Explain in detail the compatibilization mechanism of polymer blends. 7
Discuss in detail the toughening mechanism in elastomer modi?ed blend, with the help of l4
suitable example.
0R
Explain in detail the transition behaviour of polymer blends. 7
Explain in detail the shear yielding and crazing phenomenon in polymer blends. 7
Discuss the preparation, processing of following polymer blends : 13
i) Synthetic paper polymer blend
ii) Rubbcr-Rubber polymer blend
iii), Multilayer co-extrusion blend
0R
Discuss the preparation, properties and processing of following polymer blend:- 13
i) PC + PET
ii) PPO + PS
iii) Wood plastic pobmer blend
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7. a)
b)
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10. a)
b)
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12. a)
b)
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SECTION - B
What are the different fundamentals ot composite? Discuss their role in composition
preparation. -
Explain with neat sketch the tlil?l?crcnt type ofnricnmtion of ?ber in composite.
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Explain in detail the classi?cation of composite 0n the basis of origin. type of matrix and
reinforcement.
Explain in detail the glass ?bcr rmmut'acturing process with types of glass ?ber and
properties of glass ?bers.
OR
Discuss the fnllowing proccssing 13c hniques:-
i) Pultrusion ii) Hlament Winding
Differentiate between open molding and close molding.
Discuss in detail the applications ofjgmlyner composite in following ?elds:-
i) Chemical Industry ii) Aerospace
iii) Automobile
OR
Discuss the designing aspect; in cow pnsite hollow article with respect to dra?s, ?anges etc.
Discuss defects/faults and remedies in poh?mer cumpositc.
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