What composite material additives improve resistance to jet fuel exposure?

Composite materials are widely used in aerospace and industrial applications due to their strength and lightweight properties. However, exposure to jet fuel can degrade these materials over time. To improve resistance, specific additives are incorporated into composites.

1. Fluoropolymer Additives: PTFE (polytetrafluoroethylene) and PVDF (polyvinylidene fluoride) are highly resistant to jet fuel, reducing swelling and chemical degradation.

2. Epoxy Resins with Nanofillers: Adding silica or carbon nanotubes to epoxy matrices enhances fuel barrier properties.

3. Thermoplastic Elastomers: Materials like TPU (thermoplastic polyurethane) improve flexibility and fuel resistance in composite layers.

4. Aromatic Polyamides: Aramid fibers, such as Kevlar, offer inherent resistance to hydrocarbon exposure.

5. Cross-Linking Agents: Peroxide-based additives increase polymer cross-linking, reducing fuel permeation.

These additives ensure composites maintain structural integrity in jet fuel environments, making them ideal for fuel tanks, pipelines, and aircraft components.