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Elastomers
¬ Part 2
¬ Part 3
¬ Part 4
¬ Part 5
¬ Part 6
Vulkollan/PUR
Transformer oil
resist. rubber
|
Properties of elastomers, part 5 of 6
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Properties
of rubber type
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|
Kalrez
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Adiprene
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Hytrel
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Material designation
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GE
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BG
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---
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---
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Tensile strength
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non black filled
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not tested
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27.6
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40.7
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carbon black filled
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13.8
|
---
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---
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Hardness range
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|
65-95
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60A-80D
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92A
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Spec. gravity
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2.01
|
1.06
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1.17
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Adhesion to metals
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moderate
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excellent
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good
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Adhesion to fabrics
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|
good
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very good to excellent
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good
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Tear strength
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moderate
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excellent
|
excellent
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Abrasion resistance
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good
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outstanding
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outstanding
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Compression set
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moderate
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moderate
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moderate
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Rebound resilience
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at room temperature
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not tested
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good (slight at very low temp.)
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very good
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in the warmth
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not tested
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good at room temp.
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excellent
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Dielectric properties
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excellent
|
excellent
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moderate to good
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Electr. insulating resistance
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excellent
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moderate to good
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moderate to good
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Gas permeability
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moderate
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really low
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moderate
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Resistance to acids
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diluted
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excellent
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moderate
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moderate
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concentrated
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excellent
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slight
|
slight
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Resistance to solvents
|
aliphatic hydrocarbons
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excellent
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good to excellent
|
excellent
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aromatic hydrocarbons
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excellent
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moderate to good
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good
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oxygenous solvents
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excellent
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slight
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moderate
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paint solvents
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excellent
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slight
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moderate
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Resistance to:
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lubricating oils
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excellent
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good to excellent
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good
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mineral oil and fuels
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excellent
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good to excellent
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very good
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animal and vegetable oils
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excellent
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good to excellent
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very good
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water absorption
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very good
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good at room temp.
slight at 100° C
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very good to 100° C
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oxidation
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outstanding
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excellent
|
excellent
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ozone
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outstanding
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excellent
|
excellent
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|
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sunlight
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outstanding
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good
|
very good
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thermal ageing
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290° C
|
85° C
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110° C
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effects of flames
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excellent
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moderate (melts)
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good (tends to melt)
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high temperatures
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ümost outstanding
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good
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very good
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exposure to cold
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good
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excellent
|
excellent
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