Nylon, Xynole, Cordura, Innegra, all have higher elongation and require a resin with higher elongation. Xynole was the origin of 2020 resin which allowed that material to work. So it was also the origin of the multi modulus resin system. But any of these synthetics are a good way to make bullet proof boards simply. BTW my FL factory manger Sam Barker, a former pro, still rides only Xynole boards today. Insists they ride better.
Also, gotta be careful with the synthetics on resin take up. They can drink resin. Do a really dry laminate wait for it to tack and then mix up 3 ounces and do a cheater. Weight this way is reasonable. Bagging is an even better.
Elasticity with tensile strength. Will it stretch and snap, or stretch and not break. Nylon 6,6 is not weaker than epoxy alone. Anyone who thinks it is, hasn’t tested it. But I’m beating a dead horse now. It is your board to make any way you like. Enjoy.
Haavard in Europe xynol is called diolen. I find it’s a bit hard to find with great conditions in France. May be you’ll be lucky. I know some guys use it in UK. It’s a pet fabric, sightly heavier and stiff than nylon (wich was from same chemical family) but with 2 main advantages: stick better with resin and stable to uv and humidity. Often use in fiber kayak to prevent full open dings, it craks but not open brutally so the boat don’t take water too fast. A cheap alternative to kevlar.
Greg,
Any suggestions for a layup schedule with 2.2oz innegra? I still have some on hand that I want to bag over a stringerless 2# blank.
Diolen is great stuff the funny thing is that if you take a hammer and pound on the fibreglass nothing happens. No whitening of the fibreglass. As soon as any resin is there it turns white upon bashing it.
Coil just nailed it, and it is horrible no one knows how
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Without resin fiber look white, soak in resin all became clear. Under impact resin micro delam from fiber, look white again. Flexible is resin later it appear. But flexible is resin flexible is skin so you need to increase thickness to keep flexural stiffness but it increase weight more or less depend materials…
Diolen is light and stretchy need a flexible resin to “really” work but can be use as a dampener bulker with stiffer fiber and resin too.
I see only one coil, the dimple tech. Buildy quality was top but disapointed for strengh. Board have footwells and buckle crease bottom under hollow hossegor beachbreack like many. Had to repair it, dimple look like sport net nylon soak in resin, fusy when sand. I bet original grid tech wich seems to be, if i remenber well, a plastic non woven bulker between fiber glass should be better.
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What huie used to call “Woven Carbon Tow” is not Carbon at all. Can’t remember what my supplier told me, but it is either Innegra or Kevlar(can’t remember which). Aka Vector Net. A layer of six or four oz over the top of it is a “bullet proof” deck. Hard as a rock. Want really rock hard? A layer of 4 oz. A layer of Vector Net with a layer of 6oz. over it.
Vector net i can find is twaron, an aramide fiber like kevlar but tinted in black.
The rock hard feeling mostly come from tumb test (flexural stiffness) and hammer impact test ( energy to break) so a skin with high flexural stiffness and high energy to break will feel, an be, “rock hard”. Aramid fiber have a high energy to break for low weight sandwiched betwen fiberglass it’s increase thickness and so flexural stiffness and add impact energy spreading.
Yes Aramide Kevlar.