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Styrene Butadiene Rubber,SBR

Product Description:

Styrene Butadiene Rubber (SBR) is a high-performance synthetic rubber produced by copolymerizing styrene and butadiene, SBR stands out for its exceptional wear resistance, durability, and cost-effectiveness, making it a versatile choice across industries.

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Product Details

Its physical, structural, and processing properties, as well as application performance, are highly comparable to natural rubber—with even better performance in key areas such as heat resistance, aging resistance, and vulcanization speed.

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SBR1500
Item		Method standard	Quality index
Item		Method standard	High-class product	First-rate product	Qualified product
Volatility,%		GB/T6737-86A method	≤0.75	≤1.00	≤1.30
Total ash,%		GB/T6736-86	<1.00	<1.50	≤1.50
Organic acid,%		GB/T8657-88	5.00-7.25	5.00-7.25	5.00-7.25
Soap,%		GB/T8657-88	≤0.50	≤0.50	≤0.50
Combined styrene,%		GB/T8658-88	22.5-24.5	22.5-24.5	22.5-24.5
Raw Mooney ML (1+4) 100℃		GB/T1232-82	46-58	45-59	44-60
Mooney ml (1+4) 100℃		GB/T1232-82 GB8656-88	≤85	≤85	≤85
300 constant elongation stress (MPa)	25min	GB8656-88	7.1-11.6	5.9-11.8
	35min		11.3-15.8	10.3-16.2	9.8-16.7
	50min		13.2-17.7	12.3-18.1
Tensile strength ，MPa,35min			≥22.1	≥21.1	≥21.1
Extensibility，%，35min			≥480	≥480	≥480

SBR1502
Item		Method standard	Quality index
			High-class product	First-rate product	Qualified product
Volatility,%		GB/T 6737-1997Thermal extraction method	≤0.60	≤0.75	≤0.90
Total ash,%		GB/T 448一1997 A method	≤0.50
Organic acid,%		GB/T 8657-2000 A method	4.50-6.75
Soap,%			≤0.50
Combined styrene,%		GB/T 8658-1998	22.5-24.5
Mooney viscosity of raw rubber ml (1+4) 100℃		GB/T 1232.1-2000	45-55	44-56
Mooney viscosity of rubber compound ml (1+4) 100℃			≤93
300 constant elongation stress (MPa) 145℃	25min	GB/T 8656-1998 A method	15.5±2.0	15.5±2.5
	33min		20.6±2.0	20.6±2.5
	50min		21.5±2.0	21.5±2.5
Tensile-strength (145℃x35min),MPa			≥25.5	≥24.5
Elongation at break (145℃x35min),%			≥340	≥330

SBR1712
Item	High-class product	Qualified product
Volatile,% (mass fraction)≤	0.60	0.80
Ash,% (mass fraction)≤	0.40
Organic acid,% (mass fraction)	3.90~5.70	3.65~5.85
Soap,% (mass fraction) ≤	0.50
Oil content,% (mass fraction)	25.3~29.3	24.3~30.3
Bonded styrene,% (mass fraction)	22.5~24.5
Mooney viscosity of raw rubber ml (1+4) (100℃)	44~54	43-55
300% modulus stress (145℃,35min),MPa	M±2.0	M±25
Tensile-strength (145℃,35min),MPa≥	19.4	8.4
Tensile elongation (145℃,35min),% ≥	460
Mooney viscosity of rubber compound ML（1+4)(100℃)≤	70
Vulcanization characteristics	Reported value

SBR1723
Item	High-class product	Qualified product
Volatile,% (mass fraction)≤	0.60	0.80
Ash,% (mass fraction)≤	0.40
Organic acid,% (mass fraction)	3.90~5.70
Soap,% (mass fraction) ≤	0.50
Oil content,% (mass fraction)	25.3~29.3	24.3~30.3
Bonded styrene,% (mass fraction)	22.5~24.5
Mooney viscosity of raw rubber ml (1+4) (100℃)	44~54	43-55
300% modulus stress (145℃,35min),MPa	M±2.0	M±25
Tensile-strength (145℃,35min),MPa≥	17.6
Tensile elongation (145℃,35min),% ≥	420
Mooney viscosity of rubber compound ML（1+4)(100℃)	Provided by the supplier
Vulcanization characteristics	Reported value