Hi! And thanks for your time

I have some questions about your produts:

-Is possible that the EASY LEASE RELEASE AGENT have lost part of itsrelease power? I have a 1L bottle, around one year old. I have spend about ahalf of the bottle. In my last uses I have noticed a greater difficulty todemould the parts. Is possible that the Easy Lease has aged?

 -I’m trying to use prepregs in autoclave (90ºC and 2 Bar pressure).

 -Will be the Easy Lease good for that application?

-Finally I’m testing prepregs in autoclave whit a composite mould madewith your Unimould system. When I demould the part (I have tested some prepregsand your prepregs (not the surface finish prepreg)) the mould becomes damaged.It has lost it’s brightness, I can see a print pattern made by the carbonfiber, and it’s not easy to demould. Then… Which will be the best material forconstructing a composite mould for using in autoclave? I have read some timesabout constructing a Prepreg carbon fiber moulds. Is it the best? Whichproducts of your shop do you recommend?

Thank you very much.

Easy Lease has  shelf life of 12 months so it is possible you are getting to the end of its life. However, usually what causes more problems is absorption of water. Most chemical release agents, including Easy Lease, are hydroscopic and if the bottle isnt perfectly sealed, then the release agent could be damaged by absorption of moisture.  In your case you could have a combination of the two factors.

I would suggest a fresh batch for peace of mind. Easy Lease works fine for use with pre-pregs both in and out of autoclave.

Unimould is designed to be used upto 90C for Out of Autoclave pre-pregs, with an appropriate Postcure.  It is not durable enough for use in an autoclave so I suspect that is why it is being damaged when you use it in a autoclave.

Print through can be caused by a number of reasons, however in this case I think it is due to the wrong mould material for the Autoclave use.

Commonly pre-pregs and aluminium are used for making autoclave suitable moulds. However they are not the cheapest materials to use and aluminium can be especially expensive as it needs to be machined by CNC in most cases.

Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant

Hi Warren.

Thank you very much for your answer.

I will buy a new release agent bottle and I will put it in smaller bottles for minimize the time the product is in contact with moinsture.

About the autoclave mould I will try to make aluminum moulds.

Thanks.

I always fit a large flat rubber washer in the cap of the Easylease container, it makes sure you have a 100% seal and extends the life of the contents.