A number of years ago I worked in the electronics industry building printed circuit boards. We typically used a glass reinforced epoxy material called FR-4 (G10 laminate with fire retardant, UL rated). This material is available in a B-Stage (partially cured) condition in thicknesses ranging from 0.0015" to 0.008" with single ply glass to 8 ply glass (depending on what your need and finished/start thickness).
It is an e-glass (e is for electrically stable) material. It is considered a "commodity" item. Keep in mind that this is a "pre-preg" or pre-impregnated material (i.e., it is already fiberglass cloth impregnated with (partially cured [b-staged] epoxy). The epoxy resins and "bare" glass are available in the commercial markets. A "group" buy might be easier to deal with than messing with the Alumina Triydrate (? Tri Hydrate ?). Most fire retardants that I have dealt with have been bromide based. Just a thought. Formula4G -----Original Message----- From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net] On Behalf Of Phil Matheson Sent: Wednesday, February 21, 2007 4:31 PM To: KRnet Subject: Re: KR> Fire Retardant Resin Additive This is a copy of an email I sent to all Aussie KR guys, Hope you find it of interest. You will get this additive in the USA. Alumina Triydrate ( Google this for more info) This is a Powder that is mixed with Fiber Glass resin and stops the glass from burning when the flame is removed. You can mix and make a complete cowl or paint the inside to give some protection. Cost $10.00 per Kg, mix 25 :1 weight. Available from Ironbark Composites, Near Geelong Vic Call Dick Garrard. Iron Bark Composites 03 52648505 ph 0352648507 fax d...@ironbarkcomposites.com.au Will ship up to 3 kgs. regards Phil Matheson VH-PKR Australia KR Web Page www.philskr2.50megs.com http://www.vw-engines.com/ / Phil Matheson VH-PKR Australia KR Web Page www.philskr2.50megs.com http://www.vw-engines.com/ _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net Post photos, introductions, and For Sale items to http://www.kr2forum.com/phpBB2/index.php please see other KRnet info at http://www.krnet.org/info.html -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.441 / Virus Database: 268.18.3/693 - Release Date: 2/19/2007 5:01 PM
