Evoprene™ COGEE 637

About
The Evoprene COGEE range was specially developed to provide materials which will comould or coextrude to engineering thermoplastics (ETPs). This enables, for example, polyamide (nylon) handles or ABS housings to be given a solt touch feel whilst polycarbonate lenses can have gaskets moulded on to provide a weathertight product. The Evoprene COGEE grades are modified Kraton G based compounds. Many of the characteristics exhibited by the Evoprene G and Evoprene Super G ranges are shown by Evoprene COGEE compounds. However, they do have to be processed quite differently to obtain optimum bond strengths and performance characteristics.&&

Product Description
GenericSEBS
Material StatusCommercial: Active
FeaturesWeather resistance is good,Ozone resistance
AvailabilitysNorth America,Europe

Technical Data
PHYSICALNominal valueUnitTest method
Density0.930g/cm³ISO 2781

MECHANICALNominal valueUnitTest method
Shore hardness
Shaw’s A49 ISO 868
abrasion resistance216mm³DIN 53516

elastic bodyNominal valueUnitTest method
tensile strength
yield4.00MPaISO 37
300% strain3.50MPaISO 37
100% strain1.80MPaISO 37
Tensile strain
fracture470%ISO 37
tear strength22kN/mISO 34-1
Compression deformation ISO 815
23℃,72 hr43%ISO 815
70℃,22 hr86%ISO 815
100℃,22 hr92%ISO 815

THERMALNominal valueUnitTest method
Operating temperature-30 to 60

Aging performanceNominal valueUnitTest method
The rate of change in tensile strength in air (125 ℃, 336 hr)-4.0%ISO 1817
Change in Tensile Strain at Break in Air(125℃,336 hr)2.0%ISO 1817
The rate of change of Shore hardness in air
125℃,336 hr-2.0 ISO 1817

Supplementary informationNominal valueUnitTest method
Bond Strength1.14MPaInternal Method
M-S Flow0.981MPaInternal Method
Ozone resistance
35℃No Cracks ISO 1431-1
UV Rating(40℃)No Visible Cracks or Crazing 

Process Conditions
injectionNominal valueUnitTest method
Drying temperature80°C
Drying time4.0 to 6.0hr
Proposed maximum recycled material ratio20%
Barrel rear temperature250 to 270°C
Barrel middle temperature250 to 270°C
Barrel front temperature250 to 270°C
Nozzle temperature250 to 270°C
Processing (melt) temperature280°C
Mold temperature30 to 60°C
Injection speedFast 
Vent depth0.020 to 0.050mm

Notes
1. Typical properties: these are not to be construed as specifications.
2. Method Ba, Angle (Unnicked)
3. 100 pphm/200 hrs/20% Strain
4. 350 hrs
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