Joe, Would you happen to have a copy of IPC-HDBK-830 laying around? That would be a good place to start. Moisture cures are usually the silicones. Cross linkers are the urethanes and epoxies. Doug Pauls Joe Macko <[log in to unmask]> Sent by: TechNet <[log in to unmask]> 09/12/2007 05:00 PM Please respond to TechNet E-Mail Forum <[log in to unmask]>; Please respond to [log in to unmask] To [log in to unmask] cc Subject [TN] Conformal coating properties question Fellow Techs, I have been asked to help select an alternate material that cures by moisture / cross-linking (and not by solvent evaporation such as HumiSeal type AR 1B31). There are a range of mainly type UR materials to select that offer moisture cure and have differing Tg, CTE and Young's Modulus properties. I am very interested in any information that relates a conformal coating materials Tg, CTE and Young's Modulus to a coating's capability, board reliability etc.. Thanks again -Joe --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------