20-03-2012, 05:46 PM
Thats not actually the case guys.
The different cure time epoxies have SIMILAR compositions the only difference is that the faster the set time the more brittle the epoxy is when it completes curing.
5 min is handy for simple repairs but if you are gluing wings to a fusalage then the 30 or even 60 minute epoxies are the ones you should be using.
They are actually stronger because they have more elasticity.
That simply said means if you overload a 5 min epoxy it will shatter when it reaches its yield point, where a 30 minute epoxy has a higher yield point and will actually bend a lot more before it fails.
Thats the difference without getting overly technical.
This ends todays chemisty lesson.
Gazz
The different cure time epoxies have SIMILAR compositions the only difference is that the faster the set time the more brittle the epoxy is when it completes curing.
5 min is handy for simple repairs but if you are gluing wings to a fusalage then the 30 or even 60 minute epoxies are the ones you should be using.
They are actually stronger because they have more elasticity.
That simply said means if you overload a 5 min epoxy it will shatter when it reaches its yield point, where a 30 minute epoxy has a higher yield point and will actually bend a lot more before it fails.
Thats the difference without getting overly technical.
This ends todays chemisty lesson.
Gazz
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