Return-Path: Received: from iguana.ruralnet.net ([207.174.80.1]) by truman.olsusa.com (Post.Office MTA v3.5.1 release 219 ID# 0-52269U2500L250S0V35) with ESMTP id com for ; Tue, 16 Mar 1999 18:00:24 -0500 Received: from Pdjpryan.ruralnet.net (ppp1-125.ruralnet.net [207.174.80.155]) by iguana.ruralnet.net (8.9.1/8.9.1) with SMTP id QAA16785 for ; Tue, 16 Mar 1999 16:02:23 -0700 (MST) Message-ID: <002901be7000$e9f96860$9b50aecf@Pdjpryan.ruralnet.net> From: "DON & PAT RYAN" To: "LML" Subject: EPOXY CURING Date: Tue, 16 Mar 1999 16:00:32 -0700 X-Mailing-List: lancair.list@olsusa.com Mime-Version: 1.0 <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> Epoxy curing (hardening) results from the reaction between the hardener and the epoxy molecules. It requires the correct number of molecules of each component. ANY appreciable surplus of one of the components will act as a softener. Tensile properties and bonding will go SOUTH. Obviously, the ratio can be off a small amount and still achieve spec or near spec properties. I have made measurements of the Shell system and it is probably more sensitive to ratio errors than the Jeffco?? If I remember correctly +/- 3% gave fairly acceptable results. If you desire best results, keep the ratio tight!!