Talk Composites - The Forum for Advanced Composites

Resin Infusion Problems - dry patches

http://www.talkcomposites.com/Topic31960.aspx

By Balakrishnan Seeni - 2/8/2019 10:43:26 AM

Dear sir,

I did resin infusion process for 175 x 150 mm flat plate in glass and carbon fabric. But I faced huge problem. Here i attached the photos. Kindly help me to solve this problem.

I used Vacuum pump, specification is  630 mm of Hg (or )  24 in Hg. and its dry vacuum pump single stage. Is sufficient to do the infusion process?

Some times plate get good finishing. Some times problem will come (See the photos)
By matthieutje65 - 3/6/2019 1:17:20 PM

Balakrishnan Seeni - 2/8/2019 10:43:26 AM
Dear sir,

I did resin infusion process for 175 x 150 mm flat plate in glass and carbon fabric. But I faced huge problem. Here i attached the photos. Kindly help me to solve this problem.

I used Vacuum pump, specification is  630 mm of Hg (or )  24 in Hg. and its dry vacuum pump single stage. Is sufficient to do the infusion process?

Some times plate get good finishing. Some times problem will come (See the photos)

Looks like you demoulded to early to me... you're talking of the problems on the bottom of your plate right? looks like resin was still sticking to the mould? You are using epoxy right? make sure it's fully cured at 25°C preferably even with a postcure and make sure to wait 48 hours to be sure before demoulding