How about PC composites?
Today's PC composite helmets have excellent bulletproof properties, but they have weak security protection for chopping and throwing objects. Therefore, the armed police force is required to equip some metal helmets to deal with a group event.
The compressive strength and ductility of PC + ABS alloy helmet are improved a lot, which is better than ABS, and the ultra-low temperature impact property is also improved a lot. FRP anti-corrosion helmet is made of chemical fiber reinforced plastic, one of the composite materials.
Helmet data are generally divided into PC composite data, ABS, FRP anti-corrosion and composite data. Composite data and ABS often appear. If you can buy and use them, general ABS data can meet the requirements.
Composite data is composed of two or more raw materials with different characteristics. According to the way of physics or organic chemistry, the raw materials with new characteristics are formed in the macro economy, which can be used to make helmets.
The side of the composite helmet is made of carbon fiber raw materials. The composite helmet is generally lighter than the full glass fiber helmet, which is very similar to the net weight of the carbon fiber helmet.