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DuPont Vamac® DHC Ethylene Acrylic Elastomer  (discontinued **)

Category Polymer , Thermoplastic , Ethylene Methyl Acrylate
Manufacturer
Trade Name
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF DuPont Vamac® DHC Ethylene Acrylic Elastomer  (discontinued **).pdf
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Material Notes:
DuPont™ Vamac® DHC is a dipolymer of ethylene and methylacrylate cured using peroxide vulcanization systems. This gum elastomer includes a small amount of processing aid. It has a mild acrylic odor. Use adequate ventilation during storage, mixing and processing to prevent accumulation of residual vapors. Storage stability is excellent.Applications:Vamac® dipolymers are cured with peroxides and do not require a post cure cycle. Vamac® DHC was developed to improve the cure characteristics of the standard Vamac® dipolymer. Vamac® DHC provides for a higher state of cure and improved compression set. However, the heat age performance is impacted and slightly lower than the standard Vamac® dipolymer. Vamac® DHC is considered to be a 1500C continuous operating temperature elastomer. Vamac® DHC has better oil resistance with service lubricants exhibiting lower oil swell. Low-temperature flexibility is maintained. Vamac® DHC would be of interest to those customers not needing the higher heat age performance of the standard Vamac® grades (1650C continuous) while wanting to maximize the properties from a non-post cure process with minimal cure time.The properties of Vamac® DHC make it potentially suitable for a wide range of automotive applications, including powertrain seals and gaskets, rocker cover and bonded piston seals, oil coolant hoses, power steering hoses, crankcase ventilating tubes, coverings for fuel and coolant hoses, O-rings, grommets and spark plug boots. Vamac® DHC is well suited for injection, transfer and compression molding, and is easily extruded.Information provided by DuPont™
Physical Properties Metric English Comments
Specific Gravity 1.04 g/cc
1.04 g/cc
nominal
Volatiles <= 0.70 %
<= 0.70 %
ASTM D1416
Mooney Viscosity 16.5 - 24.5

@Temperature 100 °C
16.5 - 24.5

@Temperature 212 °F
ML 1+4; ASTM D1646
Ash <= 0.20 %
<= 0.20 %
ASTM D1416
Mechanical Properties Metric English Comments
Hardness, Shore A 62
62
Aged for 1008 Hrs at 150°C in ASTM SF105 Oil
71
71
Original
82
82
Aged for 1008 Hrs at 150°C in Air
Tensile Strength at Break 15.49 MPa
2247 psi
Aged 1008 Hrs at 150°C in ASTM SF105 Oil
18.15 MPa
2632 psi
Aged 1008 Hrs at 150°C in Air
21.04 MPa
3051 psi
Original
Elongation at Break 139 %
139 %
Aged for 1008 Hrs at 150°C in ASTM SF105 Oil
155 %
155 %
Aged for 1008 Hrs at 150°C in Air
181 %
181 %
Original
100% Modulus 0.0110 GPa
1.60 ksi
Original
0.0120 GPa
1.74 ksi
Aged 1008 Hrs at 150°C in Air
0.0130 GPa
1.89 ksi
Aged 1008 Hrs at 150°C in ASTM SF105 Oil
Compression Set 33.2 %
33.2 %
168 Hrs at 150°C in air
50.2 %
50.2 %
1008 Hrs at 150°C in air
Descriptive Properties Value Comments
Antioxidant-Naugard 445, parts 1
Co-agent: HVA-2, parts 2
Curative: Vulcup 40KE (peroxide), parts 5
FEF black (N550) 55
Release agent- Armeen 18D, parts 0.5
Release agent-Stearic Acid, parts 0.5
Release agent-Vanfre VAM (alkylphosphate), parts 0.5
Vamac Dipolymer, parts 100
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