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ISOSEAL ® MF 0611, MF ME 2411

ISOSEAL ® MF 0611, MF ME 2411

ISOSEAL ® MF 0611 consists of a impregnated mixed polyester-glass-fabric combined with a thermo-shrinkable PET-film.  ISOSEAL ® MF ME 2411 additionally contains a metallic salt (zincnaphtenate) suitable for epoxy-anhydride systems.  During impregnation the resin can penetrate through the layers of the ISOSEAL ® MF tape into the mainwall insulation.  During curing process  ISOSEAL ® MF will shrink under temperature and prevent resin from draining out and give some pressure to the mainwall of the overhang.

Applications

ISOSEAL ® MF is used as final above the porous tapes in the production of VPI-insulation windings to protect the overhang part of low and high voltage coils and bars against ambient stress.

Format
Roll

maximum width 1080 mm

Tapes from 10 mm width upward

Storability

ISOSEAL ® MF 0611 can be stored 2 years under normal conditions (20 °C; 50% humidity).
ISOSEAL ® MF 2411 can be stored 12 months under normal conditions (20 °C; 50% humidity).

Processing Advice

ISOSEAL ® MF 0611 and MF 2411 will shrink and seal the overhang during normal curing of coils and bars after the VPI process. 

 

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ISOSEAL ® MF 0611, MF ME 2411

Description

ISOSEAL ®     MF 0611 MF ME 2411
Properties Test Method Unit Value Value
Nominal thickness DIN 0863 mm 0.09 ± 0.01 0.09 ± 0.01
Total substance IPV 4 g/m² 86 ± 9 86 ± 9
Glass-polyester-fabric IPV 4 g/m² 23 ± 5 23 ± 5
PET-film IPV 4 g/m² 27 ± 2 27 ± 2
Resin content IPV 4 g/m² 34 ± 4 34 ± 4
Accelerator (Zn) IPV 19 mg/m²   350 ± 100
Tensile strength DIN 53455 N/cm ≥ 60 ≥ 60
Elongation DIN 53455 % ≥ 20 ≥ 20
Breakdown voltage IEC 60243-1 kV ≥ 3 ≥ 3
Shrinkage after 2 h at IPV 22 %    
75 °C     ≥ 1 ≥ 1
120 °C     ≥ 8 ≥ 8
150 °C     ≥ 14 ≥ 14
Colour     ferric oxide (brown) ferric oxide (brown)