Infusing a roof Panel with Soric SF

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#1

Hello Peeps,

im infusing a roof panel with the above core material.

Here is my stack details:

2 layers 200g twill carbon
3mm soric lantor
2 layers 200g twill carbon
peel ply
vacum bag

I will be using epoxy resin, the inner core will be cut 3" shorter than the perimeter of the carbon so there is and area on the outside of the part to be bonded to the roof.

I have a bit of concern about not using any flow media, can any one advice of give some comments about my propsed method. Any info would be warmly welcomed.

Many thanks

#2

While I have not used it before, it seems to be a product that is meant to be the flow media. However, I see some issues if you infuse, how do you get a good resin flow TO the core, if you are having a flange. You might want to have some flow media near the resin inlet, until the core area. Then the resin will flow through the core into the part. Or, if you can, infuse mid-panel, and vent through the sides. add a few inches of flow media at the resin inlet area just to give it some flow. Might have to add some holes to allow the resin to flow to the back side of the core, but I don’t know how permeable the core is.

#3

I have had some print thru porblems with soric, especially for parts that see as much sun as a roof panel. This was with 2 plies of twill 9oz on each side (it was a test layup for a race car wing - needless to say, I went another direction). Hope this helps

#4

cheers guys,

thinking of using some flow mesh around the areas where the soric ends, is foam core better? or any othe products you can recommend for my application?

#5

Soric makes for an easy infusion, but indeed, you need to get the resin into the Soric.

I would probably feed resin around the perimeter, and vent in the middle. Use an overlap of 2-3" (50-75mm) over the soric with infusion mesh, to get a reasonable feed.

Other options are densely perforated foam core, or balsa. To prevent print you could use an extra layer of glass between carbon and core, on the hot side, and use a high temp resin (VE or high temp EP) and cure properly, preferably inmould. (the mould should be capable of that…)

#6

Whats wrng with a closed cell?

#7

not used closed core but heard its not the best for infusion, i infused the roof with 3mm soric, it worked a trat but you can the a shade around the outline of the core material through the carbon, will be able to solve this problem for the next one as I have a good plan to remove this.

I can’t use any glass with my carbon as the company works on a policy of its either carbon or grp, never a hybrid blend :slight_smile:

#8

I’ve used Soric to infuse large panels (3x5 feet) for the hybrid car I worked on. The resin does have to get to the Soric, I put green media on the first 3 inches of the infusion.

Soric has a huge flow resistance, it tooks hours to infuse these panels and the flow always stopped right around the 3.5’ mark. And Soric did have a print through issue on the bag side. The mold side came out clean.

#9

Iv read its great for rtm and infusion im experimenting with it over winter

#10

hey will soric lantor print thru if i use just two layers of 6oz carbon fiber twill? sorry don’t mean to thread jack.

#11

I used two layers of 9.7 oz yard fiberglass and there was print through on the bag side.

The matte side was laid up on Aluminum with a few coats of wax. the other side with the black mark was peelply on the bottom and vacuum bag on top. I used mesh and peelply for the first few inches of the panels to ensure the resin could reach the core.