unknownMon Oct 10, 2005 5:01 am
Most of the skis are reinforced with glass, because it is cheaper and easy to find. Some people could maybe be interested in playing with other reinforcement fibers.
Here are some data for the fibers alone (no epoxy around):
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I found basalt fiber (it is a igneous rock) on swiss-composite.ch. The fiber is ligheter and stiffer than glass, and a little bit cheaper.
Zylon (regular and Hign Modulus) is a new polymer made by Toyobo (Japan). It is the best reinforcement material around today. It is lighter and stiffer than carbon, and more shock-resistant than kevlar. It is now used for armoured vest.
unknownMon Oct 10, 2005 10:37 pm
unknownMon Oct 10, 2005 11:26 pm
I like the sound of that! Especially the cheaper part. Any specific info about the prices?
unknownFri Dec 02, 2005 12:56 am
At swiss-composite the glass (UD/biax/triax) costs about 3/4 CHF per square meter and 100g/m2. Basalt fibers (only UD) costs 2CHF/m2/100g.
Usually glass it is cheaper than that, but they sell also small quantity, so they charge more.
Actually basalt is an effusive rock, if I remeber well.
It should be nice to found some zylon. I have no idea about the price, probably high.
unknownMon Jan 02, 2006 12:29 pm
R&G in Germany offers some - looks quit interesting if combined with a +/-45 biax Glass layer:
http://shop.ezentrum.de/1609097/mh5tfxXJEMaMCHBS3RA74CXPqhQo1H/4DCGI/ezshop?action=artmehr&artid=50352
unknownMon Jan 02, 2006 2:45 pm
Hi Davide!
I think some of the values are for laminates and some for single fibers!
Here is a link to values for single fiber values!
http://www.nilsmalmgren.se/produkter/industriprodukter/industriindex.html
In swedish only but I think you can figure things out!
All the best!
Henrik
unknownWed Jan 04, 2006 12:26 am
Don't forget about the "melting" of the glassfibers for example when they are curing in the epoxy. It brings the extra strength. Therefore I think such a table should be with epoxy or something similar.
Geoff
unknown
If I remeber well the properties listed above are for the fibers only.
But maybe I made some mistakes. I will check it. Anyway the trend is pretty much the same.
I had also some data for the fiber impregnated, and the E modulus was lower: the epoxy is less stiff than the fibers, so the tensile stiffness is lowered.
unknownFri Dec 23, 2005 1:39 pm
I am looking for some fire hose. Everyone in my area only seems to have new fire hose which runs around $235.00 for the smallest section of 25'. If anyone has any suggestions that would be great.
