I agree with John - but the question also raises other issues: * what about plastisizers (SP?) ? * what about hardening agents? * what about fillers?
Will sustained heating cause embrittlement or creeping? Will parts have the necessary resilience to impact or yield over their life? That's the nice thing about product safety - you never find just one worm under the rock! Best regards Gregg Gregg Kervill DipIM, MIMgt, MIEEE VP Engineering Test4Safety.com Inc PO Box 310, Reedville, VA 22539. USA Phone ( 804) 453-3141 Texas office (512) 989-1589 http://www.test4safety.com/ From: [email protected] [mailto:[email protected]]On Behalf Of John Woodgate Sent: Tuesday, March 18, 2003 12:16 PM To: [email protected] Subject: Re: Fire Retardants I read in !emc-pstc that [email protected] wrote (in <846BF526A205F8 4BA2B6045BBF7E9A6A04675DB4@flbocexu05>) about 'Fire Retardants' on Tue, 18 Mar 2003: >If a plastic containing a fire retardant is subjected to high heat (for >example, due to a overheated component) for an extended period of time (many >hours or several days), is it possible that the fire retardant in the >plastic will outgas sufficiently to decrease the flame rating of the plastic >in the heated area? I doubt that there is a general answer. In any case, the heating may alter the plastic chemically, so that either it will not burn anyway, or the retardant will not stop it burning. I think you have to ask what happens with plastics A to Z with retardants 1 to 10, and get 260 answers (or not). -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
