Anna University Processing Technology II Exam Paper

Anna University Processing Technology II Exam Paper

POLYMER TECHNOLOGY

Time: 3hrs                                                                                          Max Marks: 100

Answer ALL Questions                                                                 PART – A (10 x 2 = 20 marks)

1.What is called an extrusion? Name the products obtained from this process.

2.What are different types of extruders used to extrude plastics?

3.How are plastics parts joined by spin welding?

4.What is called “blown up ratio”.

5.What is called bulk factor?

6.How is encapsulation of metallic wires carried out?

7.Compare the properties of blown films and cast films.

8.Name any two polymeric materials processed by calendering process.

9.What are called matrix resins and reinforcements? Give examples for each.

10.What is called pultrusion? Mention its applications.

 

PART – B (5 x 16 = 80 marks)

Question 11 is compulsory

 

11.a)Discuss the blown film process                                                                       (16)

12.a) What are different dies used for extrusion process and explain their importance?

 

(OR)

 

 b)Discuss the major functions of screw extruders.

 

13.a)Describe the process of profile extrusion.

 

(OR)

 b) Describe the calendering method of processing of polymers.

 

14.a)Explain the processing of plastics by rotational molding? List its advantages.

 

(OR)

b)Describe the resin transfer molding process? List its merits.

 

15.a)Discuss the electrostatic spraying method of powder coatings.

 

(OR)

b)Discuss the joining of plastic parts by mechanical methods and ultrasonic bonding methods.

 

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