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Tekniske Data for PUR Teknik A/S spray fender til hurtige redningsbåde.

Polyurethan overflade, normalt 6-8 mm skind, forstærket med kevlar, se nedenfor.
Egenskab Norm Enhed Værdi
Shore Hardness BS 2782 Meth 365B &degA 90
Tensile 'Strength BS 903 Pt A2 Mpa 12
Elongation at Break BS 903 Pt A2 % 300
Angle Tear Strength BS 903 Pt A3 N/mm 40
Nicked Crescent Tear Strength ASTM D624 N/mm 55
Taber Abrasion (H22) BS 903 Pt A9 Meth D mg loss 250
DIN Abrasion DIN53516 mm³ loss 210
Cold Flex Temperature BS 2782 Meth 150B &degC -37
Density BS 903 Pt A1 kg/m³ 1000
Kevlar 90°, 170 g/m²
Density g/cm³ 1,45
Tensile Strength Mpa 2900
E-module Gpa 127
Elongation at break % 1.9
Thermal expansion coefficient 10-6K -4.1
Heat Conductivity W/mK 0.04
Decompostition temperature &degC 550
Absorption of humidity (20 &degC, 65% r.H.) % 3.5
Electr. Spec. Resistance ohm/cm 10(15)
Closed cell PE. foam core material full buoyancy
Density DIN 53420 kg/m³ 35
Tensile strength
- Extrusion direction
- Cross direction
DIN 53571 N/mm²
0,18
0,21
Elongation at break
- Extrusion direction
- Cross direction
DIN 53571 %
100
80
Compressive Stress (4th compression)
- at 25% deformation
- at 50% deformation
- at 70% deformation
DIN 53 577 N/mm²
0,05
0,12
0,27
Compression set (22h/23&degC/50% after 2h) DIN 53428 % < 20
Water absorption (20&degC/24h capillar absorption)
- after 24h
- after 7 days
- after 28 days
DIN 53428 Vol. %
< 1
< 1,5
< 3
Thermal stability (24h/70&degC) ASTM D-3575-F % < 5
Thermal conductivity NBN B62-201 W/mK 0,055
Compressive creep ASTM D3575-BB % < 10
Cell size BS 4443/1/4 Cells/25mm ≥ 25


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