Electronics > Manufacturing & Assembly

Are there any low flammability materials with properties like wood?

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e100:
Wood has a density of about 0.4 which is way less than something like FR4/G10 fiberglass at 1.8 which makes it great for building stuff, except for the flammability.

Is there something like an aerated version of FR4/G10 that can be treated like wood from a manufacturing point of view?

I'm aware of the various layered honeycomb composites but the cell size is usually way too big to properly handle wood screws which are expecting sub millimeter scale voids that can be crushed to make space for the fastener thread as it pushes through.

Has anyone tried making their own synthetic wood like material using hollow spheres like Q-Cel with polyester/epoxy resin or something else? My limited attempts in the past resulted in what I would describe as a lightweight rock that floats on water. I've never managed to make something with the same toughness and flex as wood.

Ian.M:
https://www.clp-inc.com/complete-guide-fire-retardant-wood/

e100:

--- Quote from: Ian.M on February 03, 2023, 09:37:32 am ---https://www.clp-inc.com/complete-guide-fire-retardant-wood/

--- End quote ---

As far as I can tell, fire retardant wood is simply normal wood that has been vacuum infused with borax, a common ingredient of washing powder and various household cleaning products.

I have no idea if having borax close to a PCB or wiring is going to cause corrosion problems.

Ian.M:
... which is why you seal the wood with a fire retardant paint or varnish.

However Borax is actually a corrosion inhibitor for many metals.

Doctorandus_P:

--- Quote from: e100 on February 03, 2023, 11:19:19 am ---
--- Quote from: Ian.M on February 03, 2023, 09:37:32 am ---https://www.clp-inc.com/complete-guide-fire-retardant-wood/

--- End quote ---

As far as I can tell, fire retardant wood is simply normal wood that has been vacuum infused with borax, a common ingredient of washing powder and various household cleaning products.

I have no idea if having borax close to a PCB or wiring is going to cause corrosion problems.

--- End quote ---

Most sorts of wood have a lot of the wood-like properties.
So what's the problem?

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