Fillers to get a final sg of about 5?
Fillers to get a final sg of about 5?
(OP)
Hi,
I need to run a job in HTV Silicone rubber with an SG of about 5.
Any idea of fillers that I could use for this?
I will need something that is reasonably priced and freely available.
It will also need to run through my injection machine.
I need to run a job in HTV Silicone rubber with an SG of about 5.
Any idea of fillers that I could use for this?
I will need something that is reasonably priced and freely available.
It will also need to run through my injection machine.





RE: Fillers to get a final sg of about 5?
RE: Fillers to get a final sg of about 5?
We have looked at using Soft iron powder as used in Sintered metal components(sg7.8)but the part should be non-metallic.
RE: Fillers to get a final sg of about 5?
Maybe you could use an insert to use a normal SG rubber, but the SG of the total part would be higher.
RE: Fillers to get a final sg of about 5?
Zinc Oxide seens to be the least expensive... ~5.8g/cm^3.
Lead is much higher, but I would not use due the safety, toxicology, etc.
You may also try ferrite.. But even, with so high level of fillers, I don't believe the mechanical properties will be ok..
Is it possible to share why do you need so high specific gravity?
Sincere regards,
Daniel Cortarelli
Polymer Materials'Engineer
RE: Fillers to get a final sg of about 5?
I need to match the s.g.'s.
RE: Fillers to get a final sg of about 5?
Just wondering due, as mentioned before, the physical properties...
If could be in other polymers, it would accept more fillers.
Daniel Cortarelli
Polymer Materials'Engineer
RE: Fillers to get a final sg of about 5?