Ⅰ. Illustration
With EPR as base material, added with reinforcing agent, softencing agent, antionxidant, curing agent, etc, totally blended by internal mixer, DCJ30G-EPR high presure-resistant Insulation Compound made by our company is the product used for cable insulation layer. It has excellent properties like good mechanical property, heat-resistance,ozone-resistance, electrical non-conductivity. It is easy to process and store.
Ⅱ. Application
It is a kind of specially used insulating material for shipyard cable, X-ray direct current & high pressure cable, electrostatic dust collector cable, locomotive cable, moving high pressure cable, atom generator cable , etc. It can be used for long time under the temperature at -50℃～90℃. The material is highly flexible, easily blending and moving. So the cable can be easily installed and laid. The color is white and it can be produced with other colors according to customers′ requirements.
Ⅲ. Technical Specification
NO. |
Test Item |
Unit |
Standard |
Typical Value |
1
1.1
1.2
1.3 |
Mechanical properties before aging
Tensile strength, min
Elongation at break, min
Snap permanent set |
Mpa
%
% |
4.2
200 |
9.8
420
50 |
2
2.1
2.2
|
135℃,168h air oven after aging
Change ratio of tensile strength, max
Change ratio of elongation at break max |
%
% |
±30
±30 |
11
-15 |
3.
3.1
3.2 |
Electricity property
Volume resistivity, at 20℃,
Breakdown intension |
Ωm
Mv/m |
|
3.0×1013
26 |
4.
4.1
4.2 |
250℃,0.2mpa,15min heat-extending test
Elongation in load, max
Permanent and set after cooling, max |
%
% |
175
175 |
40
8 |
5. |
0.55±0.02mpa,127℃,40h
Air bomb after aging
Change ratio of tensile strength
Change ratio of elongation at break, max |
%
% |
±30
±30 |
14
-15 |
6
6.1
6.2 |
Ozone-resistance test
Ozone concentration
Persistent test time without chap, min |
h |
30 |
30 |
7 |
Density |
|
|
1.45 |
8 |
Standard |
IEC 60092-351 |
Ⅳ. Processing Condition
- Ordinary rubber extruder is available, CV production line is recommended;
- Redution ratio of extruder : 1.1:1～1.5:1;
- LD ratio : above 15:1;
- Temperature : 70～80℃;
- Recommended temperature inside curing pipe : 180～200℃;
Ⅴ. Package & Storage
In 25 KG carton box with PE inside or according to the customers′ requirements. The material should be stored at clean, dry, shade and draughty place.
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