CENTRAL INSTITUTE OF PLASTICS ENGINEERING & TECHNOLOGY
Question Bank
1 MARK—QUESTION
2 MARK ---QUESTION
COURSE : DPT
SEMESTER : IV
SUBJECT : Plastic Testing |
1. Explain various methods of specimen preparation?
2. Write stepwise procedure of Identification?
3. How to perform K-value?
4. What is Standard, Specification and what is the importance?
5. Explain Short term mechanical properties.
6. Explain Surface mechanical properties.
7. Explain thermal properties of plastic materials.
8. What is testing, Standards, specification and how these help to improve Quality.
9. How to determine Density by various methods.
10. How to determine flow behavior of different plastic material.
11. .Difference between1- Standard & Specification
2- Izod & Charpy Impact
3- VST & HDT
12. Explain various Impact tests for plastic products & materials.
13. Condition which affect MFI & Density results.
14. Explain in details1- Cup flow
2- HDT
3- Thermal expansion
15. Why various methods are used for specimen preparation, Explain various methods.
16. Explain Tensile Strength test in details.
17. Explain two point & three point flexural strength test.
18. How to Identify following plastics1- Nylon
2- PS
3- LDPE
4- POM
19. Which test is perform by ASTMD 1238 and how?
20. Standard K-value and how it performed?
21. Difference between1- K-value & MFI
2- Burning behavior of PS & PE
3- Indentor of Shore A & Shore D
22. What is low temperature brittleness test?
23. What is thermal expansion test. Explain the procedure?
24. Write specimen size of1- Izod Impact
2- Flexural Strength
3- TIR of pipe
25. Explain HDT & VST test.
26. Explain MFI procedure with the specifications of MFI tester dia.
27. Explain specimen preparation1- Injection moulding specimen
2- Compression moulding specimen
28. Why Conditioning is required before test and what is it's standard.
29. Explain various long term mechanical properties.
30. Explain1- Tear strength 2- Shear strength 3- Fatigue 4- Stress Relaxation
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