What is fiber impregnation Talk briefly about the different

What is fiber impregnation? Talk briefly about the different methods for fiber impregnation

Solution

Fiber Impregnation is a reinforcing fabric which has been pre-impregnated with a resin system.

This resin system (typically epoxy) already includes the proper curing agent.

As a result, the prepreg is ready to lay into the mold without the addition of any more resin. In order for the laminate to cure, it is necessary to use a combination of pressure and heat

Formation Types
1. Solvent Dip Process
involves dissolving the resin in a solvent bath and dipping the reinforcing fabric in the resin solution. Using a drying oven, the solvent is then evaporated off the prepreg.
2.Hot Melt Process
There are two stages in this process. The first stage involves coating a thin film of the heated resin on a paper substrate. The reinforcement material and the resin are allowed to interact in the prepreg machine. On application of pressure and heat, the resin is impregnated into the fibre resulting in the final prepreg, which is ultimately wound on a core.