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Specialty Chemistry Forums => Materials and Nanochemistry forum => Topic started by: thr33k on July 15, 2011, 11:08:11 AM

Title: material density help
Post by: thr33k on July 15, 2011, 11:08:11 AM

Hi all,

I really need some help to find a material that has a density of 0.78 +- 0.03 and is a solid at room temperature. The closest I've been able to find is Polymethylpentene, does anybody know of a better match? Thanks,

James

Title: Re: material density help
Post by: Stepan on July 15, 2011, 07:55:00 PM

you can make a composite material of any density by blending any polymer with hollow glass micro capsules (3M makes them)

Title: Re: material density help
Post by: thr33k on July 17, 2011, 04:52:04 PM

Ah thanks for that, I'll look into those!

Title: Re: material density help
Post by: typhoon2028 on July 18, 2011, 10:42:09 AM

what about a foam?

Title: Re: material density help
Post by: Enthalpy on August 07, 2011, 08:18:52 PM

People develop very porous molecules for hydrogen storage. Hugely lighter than your figure. They're hollow, but at molecular scale. Making them less light would be easy.

Aerogels as well are extremely light, due to porosity at a very small scale.

Or you have alkali metals, but with serious drawbacks...

Title: Re: material density help
Post by: Enthalpy on August 13, 2011, 02:24:39 PM

Wood of course, provided it fits your other requirements.

By choosing the proper species, you can get any density between <160kg/m³ (Balsa) and >1400kg/m³ (African blackwood).

Some varnish maybe?

Title: Re: material density help
Post by: typhoon2028 on August 15, 2011, 03:00:51 PM

polypropylene foam
polyethylene foam
polyurethane foam