DATI
TECHNICAL DATA FOR P-KAP MATERIALS |
|
| Characteristics* |
Polyethylene |
Silicone |
Vinyl** |
Operating
temperature |
Low Density |
High Density |
|
Standard |
At high temperatures |
|
Continuous °C/°F |
66/150 |
74/165 |
232/450 |
93/200 |
149/300 |
Intermittently
°C/°F |
79/175 |
102/215 |
316/600 |
177/350 |
246/475 |
Brittleness °C/°F |
<-70/<-94 |
-18/0 |
-34/-30 |
- |
- |
|
Strength |
Low Density |
High Density |
|
Standard |
At high temperatures |
| Permeability, 24hrs., thickness 3.175 mm |
<0.015 |
<0.01 |
- |
- |
- |
| Combustion speed (inflammability), mm/min. |
Very slow (1.04) |
Very slow (1.00-1.04) |
Very slow |
Slow |
Slow |
| Exposure to
sunlight |
Unprotected material breaks easily; for complete protection black is necessary. |
Highly resistant |
Good resistance |
Good resistance |
| Exposure to weak acids |
Resistant |
Highly resistant |
Normal |
Highly resistant |
Highly resistant |
| Exposure to strong acids |
Attacked by oxidizing acids |
|
Normal |
Resistant |
Resistant |
| Exposure to weak alkali |
Resistant |
Highly resistant |
Normal |
|
|
| Exposure to strong alkali |
Resistant |
Highly resistant |
Normal |
Resistant |
Resistant |
| Exposure to organic solvents |
Resistant (up to 60°C) |
Resistant (up to 80°C)) |
Normal |
Good resistance to alcohol, oils and aliphatic hydrocarbons |
Good resistance to alcohol, oils and aliphatic hydrocarbons |
| Purity (natural material) |
Translucent/Opaque |
From clear to opaque |
From clear to opaque |
- |
| Abrasion resistance |
- |
- |
Normal |
Very good |
Very good |
| |
|
* Polykap’s technical specifications may be subject to change without notice.
** Colours on request for vinyl caps:
|
