I've never really understood the main differences between them. Except the fact that they are manufactured differently. What are the main differences between them?

: Puts the flamesuit on for not searching :

 

wet, is a wet lay up style. very similar to fiberglass. where you need to put on the resin seperately. dry is already pre-impregnated in the material. it needs high heat, and vacuum to cure correctly. pre-preg is alot better. it evenly distributes the resin, and is much lighter and stronger. also process for pre-preg is some what harder and more cost worthy. all in all, wet is better except for pricing. haha


Modified by gldndrgn14 at 8:38 AM 2/26/2005

 

I don't think a single word of that reply was right

 

bwahaha.

bump for a fellow dsm'r

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by gldndrgn14 &raquo;</TD></TR><TR><TD CLASS="quote">dry, is a wet lay up style. very similar to fiberglass. where you need to put on the resin separately. wet is already pre-impregnated in the material. it needs high heat, and vacuum to cure correctly. pre-preg is alot better. it evenly distributes the resin, and is much lighter and stronger. also process for pre-preg is some what harder and more cost worthy. all in all, wet is better except for pricing. haha</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by chrisgvr4 &raquo;</TD></TR><TR><TD CLASS="quote">I don't think a single word of that reply was right </TD></TR></TABLE>

Dry carbon is what has always been know as prepreg. When you receive prepreg it is cloth preimpregnated with frozen resin. It is like a roll of cardboard somewhat in consistency and workability. So its "dry" until you put it in your vacuum bag, pressurize it and heat it up and that frozen resin now flows in you mold, cures and you have a badass part. Wet layup is anything other than prepreg. That includes chopper gun, hand-layup, vaccumbagged wet layup, its all not prepreg.


Modified by hondadesign at 12:48 PM 2/25/2005

 

haha. i am sorry guys. i was drunk when i wrote that post. i ddint meant to switch the 2 around. sorry for the misinformation i will change it.


ok its fixed. does that seem better to you guys?

 

Ok, I get it now

lol, drunk guy trying to post up information

 

Infusion

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RisforTypeR &raquo;</TD></TR><TR><TD CLASS="quote">Ok, I get it now

lol, drunk guy trying to post up information </TD></TR></TABLE>


haha, yeah, usually my drunk posts come out right, and you really cant tell the difference. haah but this time i had it backwards. haha

 

Just so I know, "dry" carbon fiber is done like fiberglass (carbon fiber mat layed onto part, coverd with resin, let cure), while "wet" carbon fiber is "resined" and cured under heat and vacuum (carbon mat impregnated into part, put under heat and pressure, and resin covers part and cures under the heat and pressure)? The "wet" carbon fiber still seems a bit tricky of a concept to figure out.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DC2IntegraTypeR &raquo;</TD></TR><TR><TD CLASS="quote">Ok, I get it now

lol, drunk guy trying to post up information </TD></TR></TABLE>we've all done this before

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dubman410 &raquo;</TD></TR><TR><TD CLASS="quote">Just so I know, "dry" carbon fiber is done like fiberglass (carbon fiber mat layed onto part, coverd with resin, let cure), while "wet" carbon fiber is "resined" and cured under heat and vacuum (carbon mat impregnated into part, put under heat and pressure, and resin covers part and cures under the heat and pressure)? The "wet" carbon fiber still seems a bit tricky of a concept to figure out.</TD></TR></TABLE>
Other way around as hondadesign so posted above.

 

yep like hondadesign said. You can RTM (resin transfer molding) carbon and be really really close to dry carbon in resin to fabric ratio.

 

"fiber volume fraction" is the term you're looking for

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by carbonall &raquo;</TD></TR><TR><TD CLASS="quote"> resin to fabric ratio. </TD></TR></TABLE>

 

To all you people with ADD... yes wet is lighter than dry but how much of a difference... 10%, 50%? Is it worth the big spending?

 

The wet layup process has been used since the advent of composites to create molded shapes from glass or carbon fiber and resin. It is the easiest and least labor intensive method available for molding composites parts and is now utilized primarily by do-it-yourselfers to create product without large capital investment. The primary disadvantage of the wet laminate is the lack of resin control.

 

Dry fiber is laid into the mold and resin is poured and brushed over the cloth in a relatively uncontrolled fashion. Layer upon layer are added and "squeeged" on in this manner until the desired thickness is met. With this uncontrolled resin impregnation, the laminate can be made too resin rich - adding excess weight and reducing overall strength and stiffness. Additionally, without proper attention, areas of the laminate can end up without enough resin, thus creating a high content of voids and subsequently decreasing mechanical properties.

 

Nice 4 year bump, and I think you have it backwards there chief. Dry carbon is lighter than wet carbon. Dry carbon is also refered to as prepreg carbon because it has the resin preimpregnated in it. Since it has the perfect amount of resin, with no extra, it's lighter. Wet carbon is refered to as "wet" because you have to add the resin. The excess resin that you add is what makes wet carbon heavier (you can't get all the excess out even if you vacuum infuse wet carbon).

 

Wow....GTStangboy trying to come school the "ricers" and bumps a 4 year old post. Then it takes him three posts to attempt to do it. You dumb ***.

Dren, after reading his three posts twice, it appears he attempted to continue his first thought with the second post, basically explaining the wet layup process. He used the term "dry" and it made me pause as well, but he's basically arguing the wet layup process is cheaper, better for basic entry level work, yet compromises strength in structural applications...something everyone had explained well enough 4 years ago.

GTStang....time to banish you back to the Stang clan if this is the kind of sh*t we can expect from you.

 

Nothing GTSTANG said was valid. At all.

Wet layup is exactly how it sounds. You use raw carbon fiber and use resin either brushed on and vacuum bagged, or vacuum infused with resin. Vacuum infusion would be the lightest/strongest of the 2.

Dry carbon is actually cf with resin pre impregnated in it. It has a stiff feeling to it and is very expensive. You actually would used a vacuum setup and an autoclave to set this material in a mold.

 

Is carbon fiber (the thread itself) sensitive to water? say rainwater.

 

LOL not sure if your gonna get a response look at the date of the 1st post

 

No, the fiber itself is not going to be effected by the rain. It may effect the pattern of the weave though.