December 11, 2019, 12:46:30 PM
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Topic: Which organic polymers you find most interesting or useful?  (Read 337 times)

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Offline kamiyu2550

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Which organic polymers you find most interesting or useful?
« on: October 04, 2019, 04:15:39 PM »
Limited to organic polymers, please. Also tell us why u think so.


Offline Enthalpy

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Re: Which organic polymers you find most interesting or useful?
« Reply #1 on: October 07, 2019, 05:41:10 PM »
Man-made polymers? Presently I'm highly interested in LCP (liquid crystal polymer), because its stiffness and mechanical losses seem to exceed Dalbergia melanoxylon (grenadilla), especially with graphite fibre choppers.

Ideally, LCP would replace grenadilla for top-end woodwind instruments, hopefully improve the performance, spare the endangered species, and allow musicians to cross borders.

An other candidate is polyketone. Not very stiff, but very lossy, and cheap. If it doesn't make the body, it might make more silent keyworks.

Rationale there :

Wall's elliptic deformation http://www.scienceforums.net/topic/111316-woodwind-materials/?do=findComment&comment=1023070
more formally http://www.scienceforums.net/topic/111316-woodwind-materials/?do=findComment&comment=1025367

Body bending https://www.scienceforums.net/topic/111316-woodwind-materials/?do=findComment&comment=1077364
and next

LCP vs grenadilla https://www.scienceforums.net/topic/111316-woodwind-materials/?do=findComment&comment=1095167

Offline kamiyu2550

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Re: Which organic polymers you find most interesting or useful?
« Reply #2 on: October 07, 2019, 07:16:02 PM »
Man-made polymers? Presently I'm highly interested in LCP (liquid crystal polymer), because its stiffness and mechanical losses seem to exceed Dalbergia melanoxylon (grenadilla), especially with graphite fibre choppers.

Ideally, LCP would replace grenadilla for top-end woodwind instruments, hopefully improve the performance, spare the endangered species, and allow musicians to cross borders.

An other candidate is polyketone. Not very stiff, but very lossy, and cheap. If it doesn't make the body, it might make more silent keyworks.

Rationale there :

Wall's elliptic deformation http://www.scienceforums.net/topic/111316-woodwind-materials/?do=findComment&comment=1023070
more formally http://www.scienceforums.net/topic/111316-woodwind-materials/?do=findComment&comment=1025367

Body bending https://www.scienceforums.net/topic/111316-woodwind-materials/?do=findComment&comment=1077364
and next

LCP vs grenadilla https://www.scienceforums.net/topic/111316-woodwind-materials/?do=findComment&comment=1095167

Good points! I will take some time looking into those polymers

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