Compound D3-I

Radiation crosslinkable compound for semi-rigid superior
flame-retarded, 175ºC fluoropolymer heat-shrinkable tubing.

Compound properties

Compound D3-I is a compound offering superior chemical resistance, cut-through and abrasion resistance properties. A specially selected combination of fluoropolymers , processing aids and additives makes this compound an excellent choice for the manufacturing of heat-shrinkable tubings which will easily meet the requirements of MIL-DTL-23053/8, VG 95343 Part 5 Type F and
UL 224 VW-1.
The compound is easy processable at high speeds with minimal melt fracture and can be extruded on standard PE extruders or PVC extruders having a 2:1 pressure ratio.

Compound characteristics

Color Transparent
Specific gravity ASTM D 792 1.7
Water absorption ASTM D 570 0.05%
MFI (160ºC, 21.6kg) ASTM D 1238 9 g/10min
LOI ASTM D 2868 44%
Burning rate UL 94 V-O

Extrusion

Recommended extrusion temperature profile 200ºC - 210ºC - 225ºC - 225ºC - 200ºC

Irradiation

Recommended dose 30 - 60 kGy
Hotset-elongation of 70 - 130 % (20 gr/mm2 and 200ºC)

Packaging

The compound is packed in sealed PE bags of 25 kg.
We recommend to store the compound below 30ºC.

Tubing properties

Heat-shrinkable tubing made of this compound will be transparent and will show a continuous operating temperature of 175ºC. The excellent heat-ageing properties allows the product to withstand 350ºC for short periods. The combined high performance properties makes this product an excellent choice for applications in electrical and hydraulical systems in the aircraft, automotive, military , paper, steel, chemical adn medical industry. Tubing can be easily sterilized. The tubing can be colored by adding special color masterbatches.

Technical values

Property Test Method Typical value
 
Physical
Tensile strenght at break ASTM D 638 35 MPa
Elongation at break ASTM D 638 250%
 
Thermal
Continuous operating temperature   -55ºC to +175ºC
Minimum shrink temperature   175ºC
Heat shock (4hrs @ 300ºC) ASTM D 2671 No cracking, dripping, flowing
Heat ageing (168hrs @ 250ºC) ASTM D 638 Elongation 250%
Low temp. flexibility (-55ºC) ASTM D 2671C No cracking
 
Chemical
Fungus resistance MIL-DTL-7444 Inert
Fluid resistance MIL-DTL-23053/8 Excellent
Copper Corrosion ASTM D 2671 B Excellent
 
Electrical
Dielectric strength ASTM D 2671 30 kV/mm
Volume resistivity ASTM D 257 10 @ 13 ohm.cm

International specifications

- MIL-DTL-23053/8
- UL 224 VW-1
- VG 95343 Part 5 Type F
 
 
 

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