I am doing a college investigation and need to find three materials which could be used in the production of a bulletproof fuel tank. i am finding it very hard to find any information. Any help would be much appreciated.

kevlar?

There are several acrylics that are bulletproof (or resistant) but I don't know what the effects of your fuel would be on them. Certain plastics break down when immersed in other petroleum products.

Also whether you want to it stop a basic 9mm handgun or a high power rifle round makes a difference.

The traditional method to make them "bulletproof" is rather to fill them with foam that will expand to plug the hole when a hole is blown through it. The foam is permeable so you can hold fuel in it, and fire-resistant so there's no big explosions.