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  • Place of Origin: Hanoi, Vietnam
  • Brand Name: Make-in-Vietnam
  • Model Number: SVR 50

NATURAL RUBBER SVR CV 50


Description

SVR CV50 is a constant viscosity grade. It is produced by adding hydroxylamine neutral sulfate (HNS) and peptizer to the field latex before coagulation with acid. The coagulum is allowed to mature for some hours, reduced to crumbs by passing through a crusher, crepers, a shredder, dried and pressed into bales. The hydroxylamine inhibits the storage hardening reaction in natural rubber, which leads to an increase in its Mooney viscosity. Mooney vicosity (MV) range is 50 ± 5.

Application
  • Vibration mountings for engines and machinery
  • Railway buffers
  • Bridge bearings
  • Automotive components
  • Large-truck tire treads
  • Conveyor belt covers
  • Masking tapes
  • Rubber - metal bonded components
Features
  • Low viscosity rubber
  • Softness
Specification
Parameters
Unit
Test Methods
Limit
Dirt (retained on 45 micron aperture)
% wt
TCVN6089:2004 ISO249:1995
0.02 Max
Volatile Matter
% wt
TCVN6088:2004 ISO248:1991
0.80 Max
Nitrogen
% wt
TCVN6091:2004 ISO1656:1996
0.60 Max
Ash
% wt
TCVN6087:2004 ISO247:1990
0.40 Max
Initial Wallace plasticity (Po)
 
TCVN6092-2:2004 ISO2007:1991
Plasticity Retention Index (PRI)
%
TCVN6092-1:2004ISO2930:1995
60 Min
Mooney Viscosity** 
MU
TCVN6090:2004 ISO289-1:1994
50 ± 5
**At time of production, ML 1+4 (100°C)

Packing
  •  33.33 kg bale/36 bales, 35 kg bale/36 bales, 20 kg bale/60 bales per crate or shrink-wrapped pallets
  •  Wooden crates
  •  Shrink-wrapped on wooden or metal pallets

Bale Packaging
  • Normal 0.03 mm PE bag wrapper with melting point of 109°C max.
  • Thick (0.13 mm) PE bag wrapper.
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