Strongest Composite
Strongest Composite
(OP)
I've spent a few weeks trying to find a very specific material and am running out of resources. I'm hoping someone may have an idea or be able to point me in the right direction.
I am looking for the strongest composite available based on these few criteria:
1) Discontinuous Matrix, moldable
2) Polymer filler
3) Strength > 50 ksi
4) Notched Impact > 10 ft-lb/in
5) -40 dC < Working Temp < 70 dC
So far I've discovered only one material that comes close. Quantum Composites QC-8800 has a TS of 50 ksi, 1" fibers, vinyl ester and an Izod notch of 35.
Thanks for any help.
Steve
I am looking for the strongest composite available based on these few criteria:
1) Discontinuous Matrix, moldable
2) Polymer filler
3) Strength > 50 ksi
4) Notched Impact > 10 ft-lb/in
5) -40 dC < Working Temp < 70 dC
So far I've discovered only one material that comes close. Quantum Composites QC-8800 has a TS of 50 ksi, 1" fibers, vinyl ester and an Izod notch of 35.
Thanks for any help.
Steve





RE: Strongest Composite
Chopped fiber molding compounds are what you are describing. The polymer is usually considered the matrix and the fiber is the reinforcement. There are sheet molding compounds and bulk molding compounds.
Bulk molding compounds can have 35% fiber and the consistency of bread dough. They can be extruded and transfer molded. They can also have 60% fiber and the consistency of dry chopped straw. This type can be much stronger and stiffer. Parts are made by compression molding where preweighed buckets of material are poured into hot molds and the press closes to compress and cure the material. Parts are removed from the molds hot.
Polyester resins are cheap but adequate for many applications like cicuit breaker casings. Epoxy and bismaleimide resins are much stronger and have higher service temperature (up to 600F for BMI). But they are more expensive and are used for aerospace applications.
The fibers can be glass or carbon.
RE: Strongest Composite
Does anyone have a site with sheet molding and bulk molding compounds mechanical properties listed?
RE: Strongest Composite
http:/
RE: Strongest Composite
www.complexcomposites.com
Their only material available I believe.
Steve
RE: Strongest Composite