Properties of reinforcement fibers
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Properties of reinforcement fibers
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):
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.
Here are some data for the fibers alone (no epoxy around):
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.
Re: Properties of reinforcement fibers
I like the sound of that! Especially the cheaper part. Any specific info about the prices?davide wrote: 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.
- Kam S Leang (aka Little Kam)
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.
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.
R&G in Germany offers some - looks quit interesting if combined with a +/-45 biax Glass layer:
http://shop.ezentrum.de/1609097/mh5tfxX ... rtid=50352
http://shop.ezentrum.de/1609097/mh5tfxX ... rtid=50352
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/in ... index.html
In swedish only but I think you can figure things out!
All the best!
Henrik
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/in ... index.html
In swedish only but I think you can figure things out!
All the best!
Henrik
Professor!
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.
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.
Basalt fiber fabrics become more and more available. R&G (Germany) now sells a 280g/m^2 fabric and a 240g/m^2 UD!
Here's an article about Basalt in Produktion:
[/url] http://www.compositesworld.com/ct/issue ... ust/1400/3
And those guys are already using it for snowboards:
http://www.lib-tech.com/tech/index.html [url]
I plan to use the UD from R&G for my next ski - i will let you know about my experience.
Here's an article about Basalt in Produktion:
[/url] http://www.compositesworld.com/ct/issue ... ust/1400/3
And those guys are already using it for snowboards:
http://www.lib-tech.com/tech/index.html [url]
I plan to use the UD from R&G for my next ski - i will let you know about my experience.
a year ago when basalt fibres were aviable for the first time i ordered some of this stuff.
sadly at this moment there was only 500g/m2 tissue aviable. so...i don`t have to mention that this stuff was waaaaay too heavy. the fibres were horribly thick and not really ideal for the purpose of building a skateboard.
but what i recognized already a year ago: these fibres would be amazing, if they just were aviable in lighter tissues - an look what we have now
so my impression was that basalt has similar characteristics like carbon. nearly the same strenght etc.
so it made a lot of fun working with it. and it`s even cooler if you imagine you`re working with a tissue made out of stone.
sadly at this moment there was only 500g/m2 tissue aviable. so...i don`t have to mention that this stuff was waaaaay too heavy. the fibres were horribly thick and not really ideal for the purpose of building a skateboard.
but what i recognized already a year ago: these fibres would be amazing, if they just were aviable in lighter tissues - an look what we have now
so my impression was that basalt has similar characteristics like carbon. nearly the same strenght etc.
so it made a lot of fun working with it. and it`s even cooler if you imagine you`re working with a tissue made out of stone.
plywood freeride industries - go ply, ride wood!
Here's a comparison Basalt - E-Glass:
Dichte g/cm³ 2,75 2,6
Zugfestigkeit MPa 4840 3450
Druckfestigkeit Mpa 3792 3033
E-Modul MPa 89000 77000
Bruchdehnung % 3,15 4,7
in english:
density g/cm³ 2,75 2,6
tensile strength MPa 4840 3450
compression strength Mpa 3792 3033
Young's mmodulus MPa 89000 77000
breaking elongation % 3,15 4,7
Dichte g/cm³ 2,75 2,6
Zugfestigkeit MPa 4840 3450
Druckfestigkeit Mpa 3792 3033
E-Modul MPa 89000 77000
Bruchdehnung % 3,15 4,7
in english:
density g/cm³ 2,75 2,6
tensile strength MPa 4840 3450
compression strength Mpa 3792 3033
Young's mmodulus MPa 89000 77000
breaking elongation % 3,15 4,7
Thanks Alex that is good information.
The two questions it raises for me are?
1. Your data makes is look like basalt is actually heavier than glass while most of the marketing lines point to the opposite. Is one measure for the cloth and another for a solid peice of material?
2. The last line also shows that basalt can withstand less strech (translates into ski flex) before the fibers start to break. I would think that would be a problem in ski building. Any comments?
The two questions it raises for me are?
1. Your data makes is look like basalt is actually heavier than glass while most of the marketing lines point to the opposite. Is one measure for the cloth and another for a solid peice of material?
2. The last line also shows that basalt can withstand less strech (translates into ski flex) before the fibers start to break. I would think that would be a problem in ski building. Any comments?
- Ben
Basalt has a higher density so a laminate with the same thickness/volume will be heavier. But you should compare the other properties as well:
tensile strength is 40% higher
compression strength is 25% higher
and it's 16% stiffer
So overall you can reduce the amount of fibers and get a lighter composite.
Stiffer materials usually have less breaking elongation. But if you compare it to carbon (1,7%) it's still very high.
tensile strength is 40% higher
compression strength is 25% higher
and it's 16% stiffer
So overall you can reduce the amount of fibers and get a lighter composite.
Stiffer materials usually have less breaking elongation. But if you compare it to carbon (1,7%) it's still very high.
Here's another article about Basalt as reinforcement (epoxy):
http://www.reinforcedplastics.com/artic ... basalt.pdf
http://www.reinforcedplastics.com/artic ... basalt.pdf
Found this on another post. ebay post on basalt:
http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... L:RTQ:US:1
http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... L:RTQ:US:1