Looking for strong thermoset with low CTE
Looking for strong thermoset with low CTE
(OP)
I am searching for an epoxy resin that has a low coef. of thermal expansion (in the neighborhood of 10 uin/in-degF). Does anyone have recommendations for suppliers, websites, or materials that I can look in to? Thanks.





RE: Looking for strong thermoset with low CTE
Cheers
Greg Locock
RE: Looking for strong thermoset with low CTE
Do you know of any Kevlar products that can be added to a thermoset epoxy? Does Kevlar come in forms other than sheets? I need an additive that can be mixed into an epoxy and not significantly alter the epoxy pour/fill characteristics. We plan to pour epoxy into a silicon mold, pull a vacuum, and cure it. A fabric-like kevlar sheet won't work.
We've tried glass-filled micro bubbles and were able to reduce the CTE from 35 to 25 uin/in-degF.
Thanks,
Scott
RE: Looking for strong thermoset with low CTE
http://www.dupont.com/kevlar/
Epoxies are frequently formulated with very high levels of inorganic mineral fillers in order to reduce the CTE, especially for encapsulation of microelectronic components. I cannot recommend any specific grades or manufacturers, but you can perform your own search using the database from COMPOSITES TECHNOLOGY/HIGH PERFORMANCE COMPOSITES magazines:
http://www.compositestech.com/
then click on Sourcebook
RE: Looking for strong thermoset with low CTE