This product is a laminated product which made with the chemical treatment electrical purposed alkali-free glass cloth as the backing material,by hot pressing with high Tg epoxy resin as binder.It has high mechanical strength under high temperature,with good electrical stability under high humidity.The thermostability is grade F,suitable for all kinds of motor, electric appliances,electronic and other fields.1.Good electrical stability under high humidity; 2.High mechanical strength under high temperature, the mechanical strength retention rate≥50% under 180℃; 3.Moisture resistance; 4.Heat resistance; 5.Temperature resistance:Grade H
NO.
ITEM
UNIT
INDEX VALUE
1
Density
g/cm³
1.8-2.0
2
Water absorption Rate
%
≤0.5
3
Vertical bending strength
Normal
Lengthway
MPa
≥450
Horizontal
≥380
180±5℃
Lengthway
≥250
Horizontal
≥190
4
Impact strength (charpy type)
No gap
Lengthway
KJ/m²
≥180
Horizontal
≥137
5
Compression strength
Lengthway
MPa
≥500
Horizontal
≥250
6
Tensile strength
Lengthway
MPa
≥320
Horizontal
≥300
7
Vertical electric strength （in oil of 90℃±2℃）
1mm
KV/mm
≥17.0
2mm
≥14.9
3mm
≥13.8
8
Parallel breakdown voltage(1 min in oil of 90℃±2℃）
KV
≥40
9
Dielectric dissiption factor（50Hz)
-
≤0.04
10
Parrallel Insulation Resistance
Normal
Ω
≥1.0×1012
After soaking for 24hours
≥1.0×1010
In accordance with GB/T 1303.4-2009 electrical thermosetting resin industrial hard laminates - Part 4: epoxy resin hard laminates. Appareance: the surface should be flat, free of bubbles, pits and wrinkles, but other defects that do not affect the use are allowed, such as: scratches, indentation, stains and a few spots.The edge shall be cut neatly, and the end face shall not be delaminated and cracked.Suitable for all kinds of motor, electric appliances,electronic and other fields.
