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Cast resin technology

PUR-cast resin technology was introduced to seal and protect power, signal and telephone cable joints.
This new generation of two component cast resin has been developed for the most demanding environments and circumstances.

 

Cembre cast resin joints meet the requirements of EN50393 and DIN VDE 57291-2 (VDE0291).
Quick setting properties in humid or even cold conditions make it a fast and reliable solution.
No external measuring or mixing is required as this takes place within an Aluminium foil pouch, avoiding spillage and errors during installation.

 

Unmixed resin components have a 48 month shelf-life even in the most difficult storage conditions.
Shells are made of durable PET resulting in good hydrophobic properties and excellent impact resistance, while good adhesion to PVC and metals assures a watertight seal.     

 

Technical characteristic

Test result

Requirement of DIN VDE 0291

Pot life @

 

 

5°C 

35 min

product conforms ± 30%

23°C 

20 min

35°C

15 min

Reactant open cup flash point

> 200 °C

> 55                                                                                        

Tensile strength

 8.0 Mpa

≥ 5.0

Hot aging

- 5 Shore A

- 7

Adhesive

> 1500 CP. S

-

Elongation at break

 100%

 50%

Gel time for 300 ml @ 

23 °C

 

Pouch >1000 ml

26 min

product conforms ± 10%

Pouch <1000 ml

17 min

product conforms ± 10%

Max. reaction temp.

60 °C / 333 K

product conforms ± 10%

Total vol. variability when hardening

6 %

max. 6.5 %

Cast resin component open cup flash point

> 200 °C

> 100                                                                                        

Density

1.07 g / cm3

-

Impact strength

> 10 kJ / m2

> 10 kJ / m2

Expansion coefficient in temp. range 20-50°C 

5.9 x 10-4 K-1

product conforms ± 15%

Thermal conductivity

0.2W x m-1 x K-1

product conforms ± 20%

Flammability

Class II c

acc. to DIN VDE 0304, part 3

Water absorption 42 days@50°C

360 mg

max. 400 mg

Electrolytic corrosion

A1

-

Voltage test @ 

 

no breakdown @ test voltage

23°C

> 20 kV

> 20 kV

80°C

> 10 kV

> 20 kV

Dielectric dissipation factor @

 

 

23°C and 50 Hz

0.08

max. 0.1

23°C and 1k Hz

0.05

-

Relative permittivity

 

 

@ 23°C and 50 Hz

5

< 6

@ 23°C and 1k Hz

5.1

-

Tracking resistance

KA  3c

min KA  3c

After 28 days of immersion in 90°C water

 

 

Tensile strength

8.2N/mm2

 65% of initial value

Elongation at break

60%

 65% of initial value

Hardness

47 Shore

 80% of initial value

 

 

 

Hardness

75 Shore A

min. 20 Shore D

 

notes and legal information

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