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SKS-30 ARKM-15 / SBR-1705 STYRENE-BUTADIENE RUBBER

DESCRIPTION: Styrene-butadiene rubber SKS-30 ARKM-15 (SBR-1705) is a styrene and butadiene copolymer obtained by cold polymerization with the use of mixture of rosin and fatty acids soaps. The rubber is filled with DAE-type extender oil for synthetic rubbers.

REACH: registered

APPLICATION: SKS-30 ARKM-15 (SBR-1705) is a general-purpose rubber, widely used in tire, industrial rubber and cable 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 light-brown to dark-brown

THE PRODUCT MUST MEET THE FOLLOWING QUALITY PARAMETERS:

ParametersStandardTest MethodNote
Mooney viscosity MML 1+4 (100C)45-54ASTM D 1646 (para. 7.2.2)X
Mooney viscosity spread within a batch, units, max6---X
Volatile matter content, %, max (1 hour)0.6ASTMD 5668 (method C)X
Ash content, %, max0.6ASTM D 5667 (part A)X
Oil (DAE) content, %14.0-17.0ASTM D 5774X
Antioxidant VS-1 (CAS # 9003-36-5)* content, %0.15-0.35method of supplierX
Solvent extract content, %19-25ASTM D 5774X
Organic acids content, %4.8-6.4ASTM D 5774X
Organic acids soaps content, %, max0.25ASTM D 5774X
Bound styrene content, %22-25ASTM D 5775X
RHEOMETRIC PROPERTIES ACC. TO ASTM D 5289
ML, dNm1.4-3.4ASTM D 5289XV
MH, dNm13.0-20.0ASTM D 5289XV
ts1, min.2.5-6.0ASTM D 5289XV
t50, min.6.5-11.5ASTM D 5289XV
t90, min.12.0-20.0ASTM D 5289XV
ELASTIC AND TENSILE STREE-STRAIN PROPERTIES (in optimum vulcanization)
Tensile stress at 300% elongation, MPa, min.10.8ASTM D 412 method AXV
Tensile strength, MPa, min21.6ASTM D 412 method AXV
Relative elongation at break, %, min400ASTM D 412 method AXV


*product of hexamethylenetetramine and monoalkylphenol condensation.
X - specified in the certificate of quality.
V- non-rejectable.
Preparation of rubber mixes is carried out in accordance with ASTMD 3185 recipe 1, 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:

ParametersStandard
Rubber mix recipe in parts by weight acc. to ASTM D 3185, recipe 1:
- Rubber100.00
- Zinc oxide3.00
- IRB 7 (N330) carbon black50.00
- Sulphur1.75
- Stearic acid1.00
- TBBS (N-tert-Butyl-2-benzothiazolesulfenamide)1.00
Rheometer MDR 2000, measurement conditions:
- Temperature, 160
- Duration, min30
- Oscillation amplitude, deg.+/-0.5
- Oscillation frequency, Hz1.7

PACKING: Rubber briquettes (bales) are packaged in marked PE film (thickness of 0.05 +/- 0.01 mm, melting temperature of 108-112), 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 cargos transportation standing at transport of this form.

STORAGE: At a temperature not exceeding 30, 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.

 

JSC Synthez-Kauchuk
2013 ǻ