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发表于 2010-11-15 11:50:07
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Hycat™ SM3
An Excellent Catalyst for High Temperature Epoxy Cures
One major problem encountered with some catalysts used in high temperature (>200 OC) epoxy cures is the tendency to form a rough surface, bubbles or voids due to the volatilization of low boiling components contained in the catalyst or decomposition of the catalyst. Hycat™ SM3, produced by Dimension Technology Chemical Systems, Inc., has effectively eliminated this problem. For example, in a formulation containing a cycloaliphatic diepoxy (Lindride 190) and MHHPA (Lindride 52D) catalyzed with 4% DBU (1,8-Diazabicyclo [5.4.0] Undec-7-ene) the reaction completely decomposed at 200 OC and bubbled over the test pan. |
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