LG Chemical NBR 3250 High Acrylonitrile Polymer

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LG Chemical NBR 3250 High Acrylonitrile Polymer
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Description: NBR 3250 is a copolymer of butadiene and acrylonitrile manufactured by cold emulsion polymerization technology of Goodyear Tire and Rubber Company, USA. NBR 3250 is a non staining, medium mooney viscosity, and high acrylonitrile polymer designed to aid in processing operations such as calendaring and extruding for oil and fuel service products. NBR 3250 offers high resistance to fuels, solvents, oils and gas permeation. NBR 3250 is recommended to in industrial and automotive parts such as fuel hoses and packings. NBR 3250 is a low mooney version of NBR 3280. CAS No: 9003-18-3 Information provided by LG Chemical
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Physical Properties	Original Value	Comments

Specific Gravity	0.990 g/cc
Volatiles	0.30 %
Mooney Viscosity	55 @Temperature 100 °C	ML 1+4
Ash	<= 0.50 %

Mechanical Properties	Original Value	Comments
Hardness, Shore A	49 @Treatment Temp. 25.0 °C, Time 252000 sec	Aged fuel C
	71 @Treatment Temp. 150 °C, Time 1190 sec	Cured
	74 @Treatment Temp. 100 °C, Time 252000 sec	Aged ASTM D #3 Oil
	75 @Treatment Temp. 100 °C, Time 252000 sec	Aged ASTM D #1 Oil
	76 @Treatment Temp. 100 °C, Time 252000 sec	Circulating Oven Aging
Tensile Strength at Break	13.9 MPa @Treatment Temp. 25.0 °C, Time 252000 sec	Aged fuel C
	17.7 MPa @Treatment Temp. 150 °C, Time 1190 sec	Cured
	18.1 MPa @Treatment Temp. 100 °C, Time 252000 sec	Aged ASTM D #3 Oil
	18.3 MPa @Treatment Temp. 100 °C, Time 252000 sec	Aged ASTM D #1 Oil
	18.5 MPa @Treatment Temp. 100 °C, Time 252000 sec	Circulating Oven Aging
	31.8 MPa @Treatment Temp. 145 °C, Time 2990 sec	cured; ASTM D412
Elongation at Break	370.2 % @Treatment Temp. 25.0 °C, Time 252000 sec	Aged fuel C
	377.5 % @Treatment Temp. 100 °C, Time 252000 sec	Aged ASTM D #1 Oil
	378.8 % @Treatment Temp. 100 °C, Time 252000 sec	Circulating Oven Aging
	379.5 % @Treatment Temp. 100 °C, Time 252000 sec	Aged ASTM D #3 Oil
	410 % @Treatment Temp. 150 °C, Time 1190 sec	Cured
	544 % @Treatment Temp. 145 °C, Time 2990 sec	cured; ASTM D412
300% Modulus	156 kg(f)/cm² @Treatment Temp. 145 °C, Time 2990 sec	cured; ASTM D412
Compression Set	20.4 % @Temperature 100 °C, Time 252000 sec	160°C x 30 min. Cured)

Descriptive Properties
Bound AN Content (%)	41.5
Color	Tan
Components	HAF (IRB#7)	40 phr, ASTM D3187
	NBR 3250	100 phr, ASTM D3187
	Stearic Acid	1 phr, ASTM D3187
	Sulfur	1.5 phr, ASTM D3187
	TBBS	0.7 phr, ASTM D3187
	ZnO	3 phr, ASTM D3187
Compound Recipe	Antioxidant(3-C)	1 phr
	Antioxidant(RD)	2 phr
	Carbon Black(SRF)	80 phr
	CZ	2 phr
	NBR 3250	100 phr
	Plasticizer(TP-95)	10 phr
	Stearic Acid	1 phr
	Sulfur	0.5 phr
	TT	1 phr
	Zinc Oxide	5 phr
Rheometer	0.8 min	ts1, 160°C x 12 min, 1° Arc, MDR
	2.5 lb-in	ML, 160°C x 12 min, 1° Arc, MDR
	2.5 min	t'90, 160°C x 12 min, 1° Arc, MDR
	25.5 lb-in	MH, 160°C x 12 min, 1° Arc, MDR
Volume Swell (%)	-3.2	Aged ASTM D #3 Oil (100°C x 70hrs)
	32.5	Aged fuel C (23°C x 72hrs)
	-6.5	Aged ASTM D #1 Oil (100°C x 70hrs)

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