What is the surface composition of the thermal layer?

What is the surface composition of the thermal layer?

• A. 60% Kevlar and 40% NOMEX
• B. 50% Kevlar and 50% NOMEX
• C. 70% Kevlar and 30% NOMEX
• D. 100% NOMEX

Answer: (A)

The surface composition of the thermal layer is chosen to balance durability with flame protection. Kevlar provides the abrasion resistance and strength needed for the outer surface, while NOMEX offers inherent flame resistance and thermal insulation. A blend of 60% Kevlar and 40% NOMEX on the surface gives a good mix: the majority Kevlar strengthens the outer layer, and enough Nomex ensures effective flame resistance and thermal protection. Too much Nomex would reduce durability against wear, while too much Kevlar could lessen the thermal protection and comfort. This 60/40 combination is the recommended balance for the surface of the thermal layer.

The surface composition of the thermal layer is chosen to balance durability with flame protection. Kevlar provides the abrasion resistance and strength needed for the outer surface, while NOMEX offers inherent flame resistance and thermal insulation. A blend of 60% Kevlar and 40% NOMEX on the surface gives a good mix: the majority Kevlar strengthens the outer layer, and enough Nomex ensures effective flame resistance and thermal protection. Too much Nomex would reduce durability against wear, while too much Kevlar could lessen the thermal protection and comfort. This 60/40 combination is the recommended balance for the surface of the thermal layer.