1. Description
Wells chemicals has formulated green systems with outstanding physical, electrical, environmental and economic performance.
The new green 9002G A/B encapsulates provide the technical performance necessary to ensure accurate processing, and guarantee optimal electrical and mechanical properties for the lifetime of your product.
This is recommended for potting of high voltage parts.
2. Features
A non-halogen & non-phosphor type;
Excellent mechanical & electrical properties;
Long pot life and good working properties;
Good impregnation for the coils offers very low filler sedimentation;
UL 94 Flame resistance class V-0 (6 mm);
Suitable for potting fly-back transformer.
3. Mix ratio
|
TYPE |
9002GA/B |
|
|
EPOXY RESIN |
9002GA |
|
|
HARDENER |
9002GB |
|
|
MIX RATIO |
BY WEIGHT |
100:31~33 |
|
BY VOLUME |
100:44~46 |
|
4. General specifications
4.1 General specifications of 9002G TABLE 2
4.2 Plot of A component viscosity VS temperature See FIG 1
4.3 Plot of mixture viscosity VS time (40 ℃) See FIG 2
4.4 Plot of volume resistivity VS temperature See FIG 3
4.5 Plot of dielectric constant VS temperature See FIG 4
4.6 Plot of disspation factor VS temperature See FIG 5
General specifications of 9002G (e.g.) TABLE 2
|
|
ITEM |
UNIT |
VALUE |
METHOD |
|
|
1 |
APPEARANCE |
A |
|
WHITE |
WITH EYES |
|
B |
|
YELLOWWISH |
WITH EYES |
||
|
2 |
SPECIFIC GRAVITY |
A |
g/cm3 |
1.70~1.76 |
GB4472 |
|
B |
g/cm3 |
1.19~1.22 |
GB4472 |
||
|
3 |
VISCOSITY |
A |
cps，40℃ |
6500~10000 |
GB2794 |
|
B |
cps，40℃ |
16.5~24 |
GB2794 |
||
|
A+B |
cps，40℃ |
380~520 |
GB2794 |
||
|
4 |
GEL TIME |
S, 150℃/g |
110~160 |
LY234 |
|
|
5 |
POT LIFE TIME |
40℃，h |
>2.5 |
time of double beginning viscosity |
|
|
6 |
H.D.T |
℃ |
100~120 |
GB1634 |
|
|
7 |
COEFFICIENT OF LINER EXPANSION |
℃-1 |
＜4.0×10-5 |
GB1036 |
|
|
8 |
FLAME RETARDANCE |
6.0mm |
V-0 |
UL94 |
|
|
9 |
HARDNESS |
HD |
≥85 |
GB2411 |
|
|
10 |
TENSILE STENGTH |
MPa |
≥60 |
GB9341 |
|
|
11 |
IMPACT TRENGTH |
kJ/m2 |
＞2.5 |
GB1043 |
|
|
12 |
VOLUME RESISTIVITY |
Ω·cm,25℃ |
＞1015 |
GB1410 |
|
|
13 |
DIELECTRIC STRENGTH |
kv/mm |
≥25 |
GB1408 |
|
|
14 |
DISSIPATION FACTOR |
%,25℃,1MHZ |
≤1.0 |
GB1409 |
|
|
15 |
DIELECTRIC CONSTANT |
25℃,1MHZ |
≤4.0 |
GB1409 |
|
5 Processing data
|
ITEM |
9002GA/B |
||
|
COIL PREHEATING |
107℃/2h |
||
|
PREPARATION |
DEGASSING OF COMPOUNDS |
A |
70℃×Max 2Torr× Min6h |
|
B |
40℃×Max 2Torr×Min3h |
||
|
MPREGNATING OF EPOXY |
MIXING TEMP. OF RESIN |
40±5℃ |
|
|
VACUUM CONDITION |
2～5Torr |
||
|
IMPREGNATE TIME |
10～45sec |
||
|
VACUUM AFTER IMPREGNATE |
2～5Torr ×30sec |
||
|
CURING CONDITION |
AUOMATIC SYSTEM |
1 |
75℃/2.5h |
|
2 |
75-105℃/0.5h |
||
|
3 |
105℃/2.5h |
||
|
TOTAL CURING TIME |
5.5h |
||
6. Packing
COMMIDITY |
UNIT PACKING |
PACKING MATERIAL |
|
9002GA |
25kg |
20 LITER PAIL CAN |
|
9002GB |
20kg or 230kg |
20 LITER PAIL CAN or 200 LITER PAIL CAN |
7. Storage
7.1 Prefilled system components should be stirred and homogenized in the original containers before use.
7.2 Resin and hardener have the shelf lifes (6 months) provided, they are stored at less than 30℃ in a dry place and in sealed containers.
7.3 Prefilled system components are best are stored 15℃-35℃ as the filler tends to settle out.
8. Industrial hygience
Contamination of the eyes by resin, hardener or mix should be treated immediately by flushing with clean, running water for 10 to 15 minutes. A doctor
should then be consulted.
Material smeared or splashed on the skin should be dabbed off, and the contaminated area then washed and treated with a cleanning cream. A doctor should be charged immediately.
Anyone taken ill after inhaling vapours should be moved out to doors immediately and a doctor summoned.
In all cases of doubt call for medical assistance.
