Polymer Composites & Blends B.E Question Paper : unipune.ac.in

Name of the University : Savitribai Phule Pune University
Department : Polymer Engineering
Degree : B.E
Subject Code/Name : Polymer Composites And Blends
Sem : I
Website : unipune.ac.in
Document Type : Question Paper

Download Model/Sample Question Paper : https://www.pdfquestion.in/uploads/unipune.ac.in/6992-be_oct2011.pdf

Polymer Composites & Blends Model Paper :

B.E. (Polymer Engineering)
(2003 Course) (409363) (Sem. – I)
Time : 3 Hours
Max Marks : 100

Related : Savitribai Phule Pune University Refining & Petrochemical Technology B.E Question Paper : www.pdfquestion.in/6991.html

Instructions to candidates :
1) Answers to the two sections should be written in separate books.
2) Draw neat diagrams wherever necessary.
3) Numbers to the right indicate full marks.
4) Assume suitable data if necessary.
5) Use of logarithmic table electronic pocket calculators is allowed.

SECTION-I :
Q1) a) Discuss in detail all E’s or advantages in employing polymer blend technology. [6]
b) Classify the polymer alloys and blends on the basis of Miscibility and Methods of preparation with one example. [8]
c) Explain the term Polymer alloy with its importance. [4]
OR

Q2) a) Explain different Polymeric Modifier used to improve the following properties such as Impact Strength, Chemical Resistance, Heat
Deflection Temperature, Flame Resistance and barrier properties. [8]
b) Discuss the significances related to processing via polymer blend technology. [4]
c) Discuss the advantages and Disadvantages of the following engineering Polymeric modifier
1) Polycarbonate 2) Acrylonitrile butadiene styrene (ABS) [6]

Q3) a) Define the term Spreading coefficient and Discuss with examples the method of Compatibilization via addition of block or graft copolymers. [10]
b) Discuss with suitable diagram all function of Compatibilization. [6]
OR

Q4) a) Discuss with necessary diagram the effect of temperature on the Phase stability. [6]
b) Explain the importance of Molecular weight parameter with necessary diagram on the miscibility of polymer blend systems. [10]

Q5) a) Write a short note on Semi-IPN, Sequential-IPN. [6]
b) Discuss in detail the applicable models to understand the Rheology of Miscible Blend systems. [10]
OR

Q6) a) Write a note on any one Commercial polymer blend involving engineering polymer. [6]
b) Discuss in detail the applicable models to understand the Rheology of Immiscible Blend systems. [10]

SECTION-II :
Q7) a) What are the selection criteria’s used for Epoxy resin used in composites and list the various commercial grades of the same and brief about diluents used in epoxy resins ? [8]
b) What is Reinforcement and list the different types and forms of the reinforcing materials ? Compare the Aramide Fiber reinforcements with Boron Fiber Reinforcements. [6]
c) Define the term composite and explain in detail the different constituents of the composite with their functions. [4]
OR

Q8) a) State various Commercially available unsaturated thermosetting polyester resins forms and explain any four grades of the same along with their formulation and applications. [8]
b) Explain the three stages of the curing reaction of the unsaturated thermosetting polyester resin with its significances. Discuss the various catalyst used in unsaturated thermosetting polyester resin curing and classify them and explain any one in detail. [10]

Q9) a) What is Resin transfer Molding process and name any two products manufactured by the same process and compare the same with vacuum bag Forming process. [8]
b) What are different winding techniques used in filament winding? State and explain any four process parameter that affect the quality of filament winding products. [8]
OR
Q10) a) Explain in detail Hand lay up process and state what are the products manufactured by the same technique. [8]
b) What is pressure bag forming process and differentiate between vacuum bag Forming and pressure bag forming. List any four parameters of Vacuum bag Forming Process. [8]

Q11) a) What are Nano composite? How they are classify and compare the Nano composite with conventional composite system. [8]
b) Explain in brief the necessity of Maintenance of FRP products? What are the different methods of Maintenance used for the composite?[8]
OR
Q12) a) Explain with neat sketch repairing techniques of holes on the composite product accessible from both sides. [8]
b) Write a note on trouble Shooting in Pultrusion Process. [8]