Vamac® Ultra IP

About
The latest manufacturing technology allows polymerization of AEM grades with optimized structure and chemical composition, which provides significant improvements over the existing standard DuPont ™ Vamac® elastomers. These grades, designated and sold as Vamac® Ultra, provide true step-change improvement in processability, performance and customer value for targeted applications. Vamac® Ultra IP (developmental name VMX-3040) is the first of the Ultra family products to be commercialized. During the development phase, a goal was to identify a product having improved performance in injection molding processes compared to Vamac® G to reduce the frequency of mold cleaning. The high viscosity of Vamac® Ultra IP compared to standard AEM grades results in better mixing as well as increased green strength of compounds, and helps to avoid collapse during extrusion processes. The optimized polymer structure ensures gains in physical properties resulting in improved performance of rubber parts such as seals, dampers and extruded hoses. Low abrasion values may allow extended use of Vamac® Ultra IP in dynamic seals. The best physical properties of Vamac® Ultra IP are obtained in rubber parts having a hardness range between 50 and 90 Shore A. Extensions of this hardness range may be more easily achieved with Vamac® Ultra IP than standard AEM using appropriate compounding. Vamac® Ultra IP combines dry heat resistance of 175 °C over a period of 1000 h (six weeks) with very good resistance to automotive lubricants. Exposure of peak temperatures of 200 °C are possible for up to four days. At the same time, the Tg of -31 °C provides very good low temperature flexibility. Good compression set and compressive stress relaxation properties make Vamac® Ultra IP an excellent choice for sealing applications. Good resistance to Blow-By (hot air, acids, oil and petrol fumes), present in automotive crankcase venting systems and air ducts combined with increased dynamic resistance are additional attributes of Vamac® Ultra IP. Like every other grade of Vamac® , Vamac® Ultra IP is halogen-free.&&

About

The latest manufacturing technology allows polymerization of AEM grades with optimized structure and chemical composition, which provides significant improvements over the existing standard DuPont ™ Vamac® elastomers. These grades, designated and sold as Vamac® Ultra, provide true step-change improvement in processability, performance and customer value for targeted applications. Vamac® Ultra IP (developmental name VMX-3040) is the first of the Ultra family products to be commercialized. During the development phase, a goal was to identify a product having improved performance in injection molding processes compared to Vamac® G to reduce the frequency of mold cleaning. The high viscosity of Vamac® Ultra IP compared to standard AEM grades results in better mixing as well as increased green strength of compounds, and helps to avoid collapse during extrusion processes. The optimized polymer structure ensures gains in physical properties resulting in improved performance of rubber parts such as seals, dampers and extruded hoses. Low abrasion values may allow extended use of Vamac® Ultra IP in dynamic seals. The best physical properties of Vamac® Ultra IP are obtained in rubber parts having a hardness range between 50 and 90 Shore A. Extensions of this hardness range may be more easily achieved with Vamac® Ultra IP than standard AEM using appropriate compounding. Vamac® Ultra IP combines dry heat resistance of 175 °C over a period of 1000 h (six weeks) with very good resistance to automotive lubricants. Exposure of peak temperatures of 200 °C are possible for up to four days. At the same time, the Tg of -31 °C provides very good low temperature flexibility. Good compression set and compressive stress relaxation properties make Vamac® Ultra IP an excellent choice for sealing applications. Good resistance to Blow-By (hot air, acids, oil and petrol fumes), present in automotive crankcase venting systems and air ducts combined with increased dynamic resistance are additional attributes of Vamac® Ultra IP. Like every other grade of Vamac® , Vamac® Ultra IP is halogen-free.&&

Product Description
Supplier	DuPont
Generic	AEM
Material Status	Commercial: Active
Features	High Viscosity,Good Hardness,Halogen free,High Heat Resistance,Low temperature toughness,Good wear resistance,Solvent resistance
Availabilitys	North America,Europe

Technical Data
PHYSICAL	Nominal value	Unit	Test method
Mooney viscosity
ML 1+4，100℃	25 to 33 67	MU	ASTM D1646

elastic body	Nominal value	Unit	Test method
tensile strength			ASTM D412
100% strain	7.10	MPa	ASTM D412
100% strain	2.60	MPa	ASTM D412
100% strain, 150 ℃	2.60	MPa	ASTM D412
100% strain, 160 ℃	2.20	MPa	ASTM D412
Tensile strain			ASTM D412
fracture	260	%	ASTM D412
fracture	380	%	ASTM D412
tear strength			ISO 34-1
—	24	kN/m	ISO 34-1
—	6.3	kN/m	ISO 34-1
Compression deformation
23℃，94 hr	30	%	VW PV3307
150℃，70 hr	15	%	ASTM D395
150℃，94 hr	49	%	VW PV3307
150℃，168 hr	17	%	ASTM D395
150℃，168 hr	26	%	ASTM D395
175℃，70 hr	25	%	ASTM D395
175℃，70 hr	17	%	ASTM D395
175℃，1008 hr	54	%	ASTM D395
190℃，70 hr	30	%	ASTM D395

Aging performance	Nominal value	Unit	Test method
The rate of change in tensile strength in air			ASTM D573
175℃，504 hr	-21	%	ASTM D573
100% strain, 175 ℃, 504 hr	13	%	ASTM D573
190℃，168 hr	-21	%	ASTM D573
100% strain, 190 ℃, 168 hr	6.0	%	ASTM D573
The rate of change in ultimate elongation in air			ASTM D573
175℃，504 hr	-20	%	ASTM D573
190℃，168 hr	-24	%	ASTM D573
The rate of change in hardness of a hardness tester in the air			ASTM D573
Shaw A, 175 ℃, 504 hr	0.0		ASTM D573
Shaw A, 190 ℃, 168 hr	-1.0		ASTM D573
The rate of change in tensile strength			ASTM D471
150℃，168 hr，Dexron® VI	-25	%	ASTM D471
160℃，504 hr，Lubrizol OS 206304，5W40	-34	%	ASTM D471
Change rate of ultimate elongation			ASTM D471
150℃，168 hr，Dexron® VI	-43	%	ASTM D471
160℃，504 hr，Lubrizol OS 206304，5W40	-30	%	ASTM D471
The rate of change in Shore hardness			ASTM D471
Support A, 150 ℃, 168 hr, at Dexron ® In VI	-6.0		ASTM D471
Support A, 160 ℃, 504 hr, in Lubrizol OS 206304, 5W40	-8.0		ASTM D471
Quality change rate			ASTM D471
150 ℃, 168 hr, at Dexron ® In VI	16	%	ASTM D471
160 ℃, 504 hr, in Lubrizol OS 206304, 5W40	17	%	ASTM D471
Volume change			ASTM D471
150℃，168 hr，Dexron® VI	22	%	ASTM D471
160℃，504 hr，Lubrizol OS 206304，5W40	23	%	ASTM D471

THERMAL	Nominal value	Unit	Test method
Glass transition temperature	-37.0	℃	ASTM D7426

Supplementary information	Nominal value	Unit	Test method
MDR			ASTM D5289
MH：180℃	16.7	dNm	ASTM D5289
ML：180℃	0.820	dNm	ASTM D5289
Peak Rate：180℃	4.70	dNm/min	ASTM D5289
tc10：180℃	43.8	sec	ASTM D5289
tc50：180℃	144.0	sec	ASTM D5289
tc90：180℃	426.0	sec	ASTM D5289
Ts2：180℃	48.6	sec	ASTM D5289
Mooney Scorch（T5，121℃）	9.2	min	ASTM D1646
Resilience	44	%	ISO 4662
volatility	< 0.6	wt%	Internal Method

MECHANICAL	Nominal value	Unit	Test method
Shore hardness			ASTM D2240
Shaw’s A	79		ASTM D2240
Shore A, 1 second, 6.00 mm	59		ASTM D2240
abrasion resistance
Sandpaper	132	mm³	ISO 4649

Special value	Nominal value	Unit	Test method
yield	18.1	MPa	ASTM D412
yield	15.5	MPa	ASTM D412

Notes
1. Typical properties: these are not to be construed as specifications.
2. Results on Heat Ageing of Three 60 Shore A Compounds
3. 168 hrs, Ageing in Petro Canada Dexron® VI
4. 504 hrs, Ageing in Lubrizol® OS 206304 , 5W40
5. Method A, Trouser
6. 12 mm molded disks
7. 0.5deg / 12 min
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