Download GTU (Gujarat Technological University Ahmedabad) B.Tech/BE (Bachelor of Technology/ Bachelor of Engineering) 2020 Winter 7th Sem 2172608 Rubber Adhesion And Adhesion Science Previous Question Paper
Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER?VII (NEW) EXAMINATION ? WINTER 2020
Subject Code:2172608 Date:28/01/2021
Subject Name:Rubber Adhesion & Adhesion Science
Time:10:30 AM TO 12:30 PM Total Marks: 56
Instructions:
1. Attempt any FOUR questions out of EIGHT questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q. 1 (a) Define the term: (i) Adhesion, (ii) Adhesive.
03
(b) Give the classification of Adhesives base on their functions.
04
(c) Write the advantages and disadvantages of adhesives bonding.
07
Q. 2
(a) Discuss about the Silico-Phosphate cements.
03
(b) Draw the schematic represents of types of stresses in adhesive joints.
04
(c) List out the important factors for adhesive selection. Explain any
07
one in detail.
Q. 3 (a) How to overcome the poor tack in SBR?
03
(b) Write the suitable SBR adhesive formulation for Heat resistant
04
adhesive application.
(c) Describe in detail about the Non vulcanizing Natural rubber based
07
adhesive.
Q. 4 (a) Write the functions of tackifier in rubber adhesive.
03
(b) Short note on: "Reclaimed rubber adhesive".
04
(c) Discuss the suitable combinations of accelerators system for NR
07
latex adhesives.
Q. 5 (a) Write the three component solvent mixtures for preparing Nitrile
03
Rubber adhesive.
(b) Short note on: "Heat activated Nitrile Rubber Adhesive".
04
(c) Explain in detail about properties and testing of Neoprene rubber
07
adhesives.
Q. 6 (a) List out the disadvantages of Neoprene rubber adhesives.
03
(b) Describe the function of resins in Neoprene Adhesive.
04
(c) Discuss in detail about compounding of Nitrile Rubber Adhesives.
07
Q. 7 (a) List the curing system for butyl rubber adhesive.
03
(b) Give the name of resin which is used in Butyl rubber and
04
Polyisobutylene adhesive.
(c) Describe the applications of Cyanoacrylate adhesives.
07
Q. 8 (a) Give the advantages of Cyanoacrylate adhesives.
03
(b) Mention the difference between Storage Life & Pot Life of
04
adhesives.
(c) Discuss in detail about mixing and processing techniques for Butyl
07
rubber Adhesive.
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This post was last modified on 04 March 2021