LG Chemical NBR 6850 High Acrylonitrile Polymer

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LG Chemical NBR 6850 High Acrylonitrile Polymer
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Description: NBR 6850 is a copolymer of butadiene and acrylonitrile manufactured by advanced emulsion polymerization technology of Goodyear and LG Chem. NBR 6850 is a non staining, medium mooney, and medium high acrylonitrile polymer designed for easy processing, high productivity and excellent elastic properties. NBR 6850 offers very low mold fouling, fast cure, and high resilience. NBR 6850 is a high mooney version of NBR 6840. Applications: NBR 6850 is recommended to use in wide range of general purpose applications including injection molded o-rings, calendared belting, extruded hose and sponge. CAS No: 9003-18-3 Information provided by LG Chemical
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Physical Properties	Original Value	Comments

Specific Gravity	0.980 g/cc
Volatiles	0.30 %
Mooney Viscosity	50 @Temperature 100 °C	ML 1+4
Ash	<= 1.0 %

Mechanical Properties	Original Value	Comments
Hardness, Shore A	47 @Treatment Temp. 25.0 °C, Time 259000 sec	Aged fuel C
	71 @Treatment Temp. 145 °C, Time 1190 sec	Cured
	72 @Treatment Temp. 100 °C, Time 259000 sec	Aged ASTM D #3 Oil
	77 @Treatment Temp. 100 °C, Time 259000 sec	Circulating Oven Aging
	77 @Treatment Temp. 100 °C, Time 259000 sec	Aged ASTM D #1 Oil
Tensile Strength at Break	14.0 MPa @Treatment Temp. 25.0 °C, Time 259000 sec	Aged fuel C
	18.6 MPa @Treatment Temp. 145 °C, Time 1190 sec	Cured
	19.3 MPa @Treatment Temp. 100 °C, Time 259000 sec	Aged ASTM D #3 Oil
	19.6 MPa @Treatment Temp. 100 °C, Time 259000 sec	Aged ASTM D #1 Oil
	19.8 MPa @Treatment Temp. 100 °C, Time 259000 sec	Circulating Oven Aging
	28.9 MPa @Treatment Temp. 145 °C, Time 2990 sec	cured; ASTM D412
Elongation at Break	355.3 % @Treatment Temp. 25.0 °C, Time 259000 sec	Aged fuel C
	381.1 % @Treatment Temp. 100 °C, Time 259000 sec	Aged ASTM D #1 Oil
	383.7 % @Treatment Temp. 100 °C, Time 259000 sec	Circulating Oven Aging
	386 % @Treatment Temp. 100 °C, Time 259000 sec	Aged ASTM D #3 Oil
	406 % @Treatment Temp. 145 °C, Time 1190 sec	Cured
	492 % @Treatment Temp. 145 °C, Time 2990 sec	cured; ASTM D412
300% Modulus	159 kg(f)/cm² @Treatment Temp. 145 °C, Time 2990 sec	cured; ASTM D412
Rebound	49.1 % @Temperature 30.0 °C
Abrasion	0.3265	AKRON
Compression Set	20.4 % @Temperature 100 °C, Time 259000 sec	160°C x 30 min. Cured)

Descriptive Properties
Bound AN Content (%)	34
Color	Light Tan
Components	HAF (IRB#7)	40 phr, ASTM D3187
	NBR 6850	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 6850	100 phr
	Plasticizer(DOP)	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
	1.2 min	t'50, 160°C x 12 min, 1° Arc, MDR
	1.6 min	t'90, 160°C x 12 min, 1° Arc, MDR
	2.2 lb-in	ML, 160°C x 12 min, 1° Arc, MDR
	29.4 lb-in	MH, 160°C x 12 min, 1° Arc, MDR
Volume Swell (%)	-2.5	Aged ASTM D #3 Oil (100°C x 72hrs)
	42.1	Aged fuel C (23°C x 72hrs)
	-6.6	Aged ASTM D #1 Oil (100°C x 72hrs)

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