Regarding "Polyborodimethylsiloxane is an expensive chemical and the thickness of the D3O back protector and limb products is on average the same with the thickness of their competitors using "normal" polyurethane."

Please note that:

1. PBDMS is much different from 'normal' foams such as PU, PS, TPU, EVA, etc.

2. PBDMS is a viscoelastic liquid or non-Newtonian fluid having high Deborah numbers

3. There are covalent bonds within the polymer, but hydrogen bonds between the molecules. It provides ‘Grab-release’ mechanism with dynamic, reversible network(Si-O-B)

4. PBDMS is an interfacial nano-adhesive, hydrogen-bonded, self-healing, hydrophobic, super stretchy or flubber-esque, etc. Again, it forms dynamic, reversible network.

In conclusion, PBDMS is a spider silklike siloxane. The emulsified gels or suspensions with nanoparticles(ex. carbon nanotube, graphene, cellulose nanofibrils, nanoclay, etc.) may find many potential applications. Its features are:

① spider silk-like, ② energy absorbing ③ self-healing ④ can be stretched several times its length before it breaks ⑤ stronger than carbon steel ⑥ tougher than carbon fiber and Kevlar ⑦ antimicrobial, fragrant ⑧ waterproofing, nonflammable

Reference

1. https://pubs.acs.org/cen/whatstuff/stuff/7848scit3.html
2. https://www.facebook.com/Aussie-Aerogels-552921575091430/?ref=bookmarks
3. https://omnexus.specialchem.com/tech-library/article/2018-wmf-startup-challenge-innovative-ideas (#4, K-armourgel and Spider Silk Sand by Korea Aerogels)

Regarding "Polyborodimethylsiloxane is an expensive chemical and the thickness of the D3O back protector and limb products is on average the same with the thickness of their competitors using "normal" polyurethane."

Please note that:

1. PBDMS is much different from 'normal' foams such as PU, PS, TPU, EVA, etc.

2. PBDMS is a viscoelastic liquid or non-Newtonian fluid having high Deborah numbers

3. There are covalent bonds within the polymer, but hydrogen bonds between the molecules. It provides ‘Grab-release’ mechanism with dynamic, reversible network(Si-O-B)

4. PBDMS is an interfacial nano-adhesive, hydrogen-bonded, self-healing, hydrophobic, super stretchy or flubber-esque, etc. Again, it forms dynamic, reversible network.

In conclusion, PBDMS is a spider silklike siloxane. The emulsified gels or suspensions with nanoparticles(ex. carbon nanotube, graphene, cellulose nanofibrils, nanoclay, etc.) may find many potential applications. Its features are:

① spider silk-like, ② energy absorbing ③ self-healing ④ can be stretched several times its length before it breaks ⑤ stronger than carbon steel ⑥ tougher than carbon fiber and Kevlar ⑦ antimicrobial, fragrant ⑧ waterproofing, nonflammable

Reference

1. https://pubs.acs.org/cen/whatstuff/stuff/7848scit3.html
2. https://www.facebook.com/Aussie-Aerogels-552921575091430/?ref=bookmarks
3. https://omnexus.specialchem.com/tech-library/article/2018-wmf-startup-challenge-innovative-ideas (#4, K-armourgel and Spider Silk Sand by Korea Aerogels)