: Hello all,

: I know “plastic” is a bad word in this forum,
: but hey ! he got epoxy and FG and more stuff.

: well, I visited this place:
: www.plasticworld.ca

: I saw there (among other things) 3 types of materials, I talked
: with the person,
: and following is the information I got from him:

: FG – irrelevant for this discussion

: Kevlar – light brown color cloth with the same complexion as FG .
: He claims it is heavy and expensive, and more abrasion resistant,

: Carbon fiber – black cloth with the same complexion as FG .
: He claims it is light and expensive and stronger than the FG.

: He also said something about one material being more abrasion
: resistant
: than the other, and about the “other” that will no break when
: folded, unlike the “one”,
: but I don’t remember which is which.

: To this very day I had the belief “Kevlar” is just a brand name
: for
: carbon fiber. The person there seemed impatient so I did not
: started this discussion with him, and the truth is I trust the
: people here
: more than I trust people that are not…. well….. “here” .

: so:

: 1.
: What is that light brown material called “Kevlar” ?

: 2.
: What is the difference between that “Kevlar” and the black
: “Carbon fiber” cloth ?

: 3.
: What are the pros and cons for our cause (which is kayak building)
: ?

: Any help appreciated,

: Erez

Someone will Chime in and give more specific details but CF and Kevlar are NOT the same at all. Kevlar IS more abrasion resistant and has different properties than cf.
I think the proprietary brand name you are thinking of is Kevlar vs Dupont Armarid Also I believe "Spectra" is in the same family, and there are ripstop cloths made with spectra under the brand Dynema

FG and CF/kevlar are all Base material for resin impregnation and a lot has to do with the resin used and the resin/cloth ratio. in short there is more to it than simply picking the right cloth. there are various weights and grades of "standard" FG as well. E and S types come to mind. also the relative strength of "glass" laminates depends one several things, Cored laminates can gain strength by having two thin skins separated by an engineered Core material ( works similar to an "I" beam, in that the outside of the bend is put in tension while the inside surface is put in compression )

I would recommend checking out some of the Video instruction and FAQ's offered on a website of a company called fiberglast.

Dan