mould ebonite expanded 1

[volonta]

we are preparing a sample for a molded float in ebonite expanded capable of supporting a force of 1500 N m/sec.

May I ask any advise about the filler and the percentages to add for preserve the strengths inquired.

this type of manufacture is new for us we have ever produced only nr + s.

any advises could help me la lot

regards,

gl.volontà

http://www.ebonite.it

 

[GrahamBennett]

I've only ever worked with solid rather than foamed ebonite. It is very brittle having a very high modulus and low elongation at break.

 

[volonta]

Our objective is to decrease the specific weight to allow the floating on liquids. the pure ebonite has a s.w. between 1,1-1,2 but if expanded the s.w goes down 1.
Otherwise for reduce the brittling we are adding 20 parts of ebonite dust on 100 of nr.

thanks for your reply

regards,

GL. Volontà

http://www.ebonite.it

 

[volonta]

Fortunately I've found a full receipt for obtain a strenght and glossy item in hard ebonite expanded with gas:

read the full article :

http://www.google.com/patents?id=LUpvAAAAEBAJ&dq="ebonite+dust"

G.L. Volontà

http://www.ebonite.it

 

[GrahamBennett]

Thanks for letting us know.