Question

Prepare the right order of mixing Polyester Resin : A. Gel Coat
B. Filler into resin
C. Catalyst to harden
D. Accelerator into resin
E. Laying up Choose the correct answer from the options below :

• A. A, D, C, B, E
• B. B, D, C, A, E
• C. C, D, B, A, E
• D. D, A, C, B, E

Hint:

Logic Tip: Gel coat first, chemicals next, fillers after curing setup, and laying up at the end.

Answer 1

The Correct Option is A

Concept:
Polyester resin preparation follows a technical sequence in mould-making and fibre-reinforced sculpture processes. Correct sequencing is essential because:
• Improper mixing affects curing
• Resin may harden too early
• Surface finishing quality depends on sequence

Step 1:
The process begins with applying the gel coat. It creates:
• Smooth outer surface
• Protective finishing layer
• Decorative surface quality

Step 2:
The accelerator is added to activate the resin mixture and prepare it for curing.

Step 3:
The catalyst initiates chemical hardening and curing of polyester resin.

Step 4:
Fillers are added:
• To increase thickness
• To improve strength
• To reduce shrinkage

Step 5:
Finally, the prepared resin mixture is laid onto:
• Fibre material
• Mould surfaces
• Structural layers Thus the correct sequence is: \[ A \rightarrow D \rightarrow C \rightarrow B \rightarrow E \] Hence, the correct answer is: \[ \boxed{\text{(1) A, D, C, B, E}} \]