this ones for the experts. would a white tint in the resin when laminating a carbon board help keep the carbon from heating up in the sun. i have a theory that even a white board will still heat up the carbon if left in the sun, so i'm wondering if a white tint through the carbon might help keep it at a cooler temperature
I'm no expert.. but I say that it should work.
btw.. I felt my friends PSH board yesterday while it was sitting in the hot sun and the board felt cool.. the deck pad felt warm.. and the black circle on the deck where the PSH logo is was almost too hot to touch.. I was amazed.
I've been thinking about spraying one of my Kilaoa paddles with a thin white spray to see how that effects the heating up in the sun... Jeez they get hot after just a few minutes left in the sun.
DJ
I used to have a white gelcoated racing ski that was carbon.
It used to get way to hot if I left it in direct sunlight for too long.
So i would always try put it under shade.
But my Glass ski could stay in the sun all day no probs ( as long as the bung was out )
I think a white tinted carbon lay up would still draw some heat.
But I aint know expert.
That's a great question. I will ask the man known only as McGuiver tonight, after building surf craft for 30 years I would imagine he could shed some light on this issue.
One thing to keep in mind when pigmenting epoxy, is the fact that the more pigment that is used the more it will degrade the phisical properties of the laminate.
To make a carbon laminate white would require a high pecentage of pigment & a thick white pigmented filler coat to get a good opaque white surface.
Painting with good tough marine polyurithane & a gortex vent is by far the most reliable way to minimise heat related delamination.
Regarding that theory of carbon under a white surface getting hotter....I just tried it foor you....most of my long boards have a 100mm wide carbon uni down the center....there is no noticible difference in temp in this area & the glass next to it.
The one on the left has been sanded, the other undercoated.
Hey LSD, do you find the marine poly paint adds much weight?
I read that with ski's etc that any colour at all adds weight to the carbon other than clear. Ie Black is lightest.
Have you ever measured the before and afters? They were saying some colours were also heavier than others.