SMR20     is  a  technically  specified  natural  rubber  used in the  manufacture of high performance passenger  and truck tyres.Its low viscosity and  other properties reduces  the mixing period considerably making it a very efficient material.

smr10 head.gif (1527 bytes)

It  is  presented  in a  wooden pallet.  Each pallet  consists of thirty six rubber bales weighing either  331/3 kg or 35 kg. Every  bale is  wrapped in  high  quality   polyethylene  which  is  dispersible  and compatible  with  natural  rubber at 110° celcius.

Latex Coagulum
Cup Lump
Tree Lace
Unsmoked Sheets
smr10TechSpec.gif (2278 bytes)
Dirt % wt. max. (mean + 35 D) 0.16 Compound Mooney Viscosity
Ash % wt. Max 1.00 Vc   (ML 1 + 4 at 100° Celcius ) 52.5
Nitrogen % wt.max 0.6 Mooney Scorch time (min to 5 unit
Volatile Matter % wt.max 0.8 rise above  min at 120° Celcius) 21.2
Acetone Extract % wt max 5.0 Monsanto rheometer at 140° Celcius
Copper Content max 8 PPM Optimum cure t90   (mins. ) 26.8
Manganese Content max 10 PPM Cure rate,   t90 - t2  (mins.) 18.7
Po (Wallace Plasticity) Min 30 Scorch time t2         (mins.) 8.1
PRI % min 40
Mooney Viscosity 70-90
Low rolling resistance High performance passenger tyres
Low heat generation Heavy load bearing bias truck tyres
Excellent traction for all season treads Motorcycle and bicycle tyres
High resitance to cutting, Inner tubes, conveyer belts, hoses
chipping and tearing General rubber products
PROPERTIES1.gif (2278 bytes)
HARDNESS, IRHD 65 AKRON ABRASION, mm3/500rev 21
MODULUS AT 30%, MPa 12 GOODRICH HBU, deg C, 30min from 100 deg C 7
TENSILE STRENGTH, Mpa 29 DUNLOP resilience, % 23 dec C 65
COMPRESSION SET, 25%, 24b/70 C% 18

 

graph-SMR20a.gif (9144 bytes) graph-SMR20b.gif (9199 bytes)