SKS-30 ARKPN / SBR-1502
Styrene-Butadiene RubberStyrene-butadiene rubber SKS-30 ARKPN (SBR-1502) is a styrene and butadiene copolymer obtained by emulsification method with the use of mixture of rosin and fatty acids soaps. It is stabilized by non-staining antioxidant.
REACH: registered
Application: SKS-30 ARKPN (SBR-1502) is a general-purpose rubber. It is widely used in tire, rubber technical and other industries.
Rubber should not contain any foreign impurities and must meet the following requirements:
Appearance: briquettes (bales)
Weight: 30.0+/-1.0 kg
Colour: from yellow to dark-yellow
The product must meet the following quality parameters:
Parameter
Standard
Test Method
Mooney viscosity ML 1+4 (100°C)*
46-56
ASTM D 1646 (para. 7.2.2)
Viscosity spread within a batch, units, max*
6
Volatile matter content, %, max (1 hour)*
0.8
ASTM D 5668 (method C)
Ash content, %, max*
0.6
ASTM D 5667 (part A)
Bound styrene content, %*
22-25
ASTM D 5775
Antioxidant (VS-30A or Agidol-30) content, %*
1.0-2.0
Method of supplier
Organic acids content, %*
5.0-7.0
ASTM D 5774
Organic acids soaps content, %, max*
0.3
ASTM D 5774
Rheometric Properties
Standard
Test Method
МL, dNm**
1.8-3.0
ASTM D 5289
MH, dNm**
15.0-21.0
ASTM D 5289
ts1, min**
2.2-4.5
ASTM D 5289
t’50,min**
7.0-12.0
ASTM D 5289
t’90,min**
13.0-21.0
ASTM D 5289
* – specified in the certificate of quality.
** – non-rejectable.
Preparation of rubber mixes is carried out in accordance with ASTMD 3185 recipe 1А, mixing – according to method A. Mixing mills are prepared according to ASTM D 3182. Rheometric properties are determined according to ASTM D 5289 using an MDR 2000 rheometer (flow meter). Wait time for rubber mix before testing is 2-6 hours.
Rubber mix recipe and measurement conditions:
Rubber mix recipe in parts by weight:
Standard
Rubber
100.00
Zinc oxide
3.00
IRB 7 (N330) carbon black
50.00
Sulphur
1.75
Stearic acid
1.00
TBBS (N-tert-Butyl-2-benzothiazolesulfenamide)
1.00
Rheometer MDR 2000, measurement conditions:
Standard
Temperature, oС
160
Duration, min
30
Oscillation amplitude, deg.
+/-0.5
Oscillation frequency, Hz
1.7
Packaging:
Rubber briquettes (bales) are packaged in marked PE film (thickness of 0.05 +/- 0.01 mm, melting temperature of 108-112оС), then – in plastic box pallets of 450kg or in plywood containers of 1,080kg, or metal containers of 1,260kg.
Transportation:
Rubber is transported by all types of transport in covered transporting means in accordance to all rules of cargo’s transportation standing at transport of this form.
Storage:
At a temperature not exceeding 30оС, in dry place free from direct sunlight.
Guaranteed Shelf Life:
1 (one) year from the manufacture date. After the expiration of the guaranteed shelf life, the rubber can be used for its intended purpose after confirmation of its conformity to the requirements of this product specification