[Jukebox-list] Re: Shrinking Plastic/ Discolouration/ Phenolic

[Bob Ellingson]

At 04:43 PM 11/21/2007 -0800, you wrote:
>Anyone know what "phenolic" is made from--or how it's made??  Ron Rich

from Wikipedia:

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Phenolic resin can include any of various synthetic thermosetting resins,
obtained by the reaction of phenols with simple aldehydes and used to make
molded products, including pool and snooker balls, and as coatings and
adhesives. See phenol formaldehyde resin for a fuller discussion of the
chemistry.

The properties of phenolic materials make them very well suited to myriad
industrial applications. Phenolics are the result of polymerization between
resin and a base material that can be paper, glass or cotton. The base
material used is dependent upon the intended application of the finished
product. Paper phenolics are used in the manufacturing of electrical
components such as punch-through boards. Glass phenolics are particularly
well suited for use in the high speed bearing market.

Bakelite is made from phenolic resin.

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It wasn't until a couple weeks ago that I realized that the Amphenol company
got their name from "American Phenolic", when I saw some tube sockets
stamped with that nomenclature.  I also see "micanol" as a material name,
presumably from Mica-impregnated Phenolic.  It is somebody's proprietary
name for that light brown sorta-sparkly material that their tube sockets are
made from.

--Bob

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Bob Ellingson					bobe at halted.com
Halted Specialties Co., Inc.			http://www.halted.com
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