I am researching if there is a cloth/fiber (that can be worn) that instantly hardens on impact?

I am well aware of oobleck - but this is a liquid. I also know of D30, which is a material that hardens on impact. However, i am not sure if it is a cloth material...

Looking pictures of it online, it seems that the protective parts of clothing (which is D30) look like more like PLA plastic than cloth. And they are placed on top of the clothing.

We have Ooblek-like fluid to thank for the new limber and lightweight protectors. They feel as though they’re filled with water when you wear them, but on impact, they become a crystalline solid that protects you. The magic ingredient is polyborodimethylsiloxane, an intelligent molecule that floats happily within the polyurethane protector until there’s an impact. Then it configures itself into a tough solid that absorbs much of the force. Duty done, it immediately returns to its fluid state.

Finally, i came across a material called DEFLEXION, which is supposedly cloth that hardens in impact (https://mikeshouts.com/advance-textile-that-hardens-on-impact-dow-corning-deflexion-textiles/) but i couldn't see the product anymore, nor could i find enough data about it.

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    $\begingroup$ If a company has this and wants to market it to the military for example, do you think they will make it public so it gets stolen, duplicated etc? Is industrial espionage a thing? $\endgroup$
    – Solar Mike
    Nov 29 '21 at 16:27

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