Question

The novalak – acid system needs what temperature conditions?

(a) 15°C – 25°C

(b) 25°C – 35°C

(c) 35°C – 45°C

(d) 45°C – 55°C

This question was addressed to me by my college director while I was bunking the class.

Asked question is from Comparative Properties of Gas-Vapour Cured Resin Binders in portion Binder Technology of Casting-Forming-Welding II

Answer 1

The correct option is (c) 35°C – 45°C

The best I can explain: The novalak – acid system needs to be operated in between the temperature range of 35°C – 45°C. When this system gets operated in these temperature ranges, it is observed to yield best results.