Hello!!!
An eopxy resin is a polyepoxide i.e. a polymer of epoxide with itself (as shown in the image). Sometimes, other functional groups such as amines, acids etc. are added to epoxy resins as co-reactants. These, when reacted with polyepoxides, formthermo-setting polymers i.e. they increase the hardness of the material..
Thus, purpose of amine in the formation of epoxy resin is as a Hardener.
Thermosetting polymers have a high chemical resistance as well as thermal resistance i.e. it will not get damaged upon exposure to heat, chemicals etc. Thus, they can be used for several purposes such as metal-coatings, insulator manufacturing etc.
Thus, the right answer is option-d. (Hardener)
Feel free to ask your queries in the comments.
Get Answers For Free
Most questions answered within 1 hours.