Product Description
Bi-component alicyclic saturated structure epoxy resin system /liquid can be used to the processes of APG& Conventional casting process under vacuum,Excellent UV resistance &heat shock resistance Excellent environmental performance and mechanical properties.TG:85-105ºC
No-postcure injecting Epoxy Resin
Formulation
| Epoxy resin |
WDE1891K |
100pbw |
| Hardener |
WDH1891K |
100pbw |
| Filling |
Silica flour (X10) |
330-400pbw |
| Color paste |
LC-series * |
3pbw |
Property
Bi-component structure Epoxy resin system /Liquid can be used to the no-postcure injecting APG process. Excellent splitting and he at resistance.It's TG is 100-120°C.
Product data
WDE1891K is a kind of modified BPA epoxy resin
| Properties |
Standard |
Unit |
Value |
| Appearance |
|
Visual |
Transparent sticky liquid |
| Epoxy value |
ISO3001 |
Eq/kg |
4.8-5.4 |
| Viscosity at 25°C |
ISO12058 |
mPa.s |
9.5-14.5 |
| Density at 25°C |
ISO1675 |
g/cm3 |
1.16-1.20 |
| Vapor pressure |
(kNUDSEN) |
Pa |
<0.01 |
| Flash point |
ISO1523 |
°C |
About 135 |
WDH1891K is a kind of liquid carboxylic anhydride hardener
| Properties |
Standard |
Unit |
Value |
| Appearance |
|
Visual |
Light yellow-brown liquid |
| Viscosity at 25°C |
IS012058 |
mPa.s |
400-800 |
| Density at 25°C |
ISO1675 |
g/cm3 |
1.17-1.24 |
| Vapor pressure at 25 °C |
(kNUDSEN) |
Pa |
About 0.5 |
| Flash point |
ISO1523 |
°C |
About 140 |
Process Condition
| Process parameter |
APG |
| Mix temperature |
40°C/1-2 hours |
| Feeding process |
Pressure (0.5-5bar) |
| Mold temperature |
130-150°C |
| Gelation times |
15-40mins |
| Cure conditions |
≥4hours |
Applications
Various medium & high voltage electrical insulation parts requiring excellent splitting and heat resistance and mechanical and electrical properties, such as:10-35KV Contacts box, bushings, insulators ,etc.
Gelation times
| Temperature |
Gelation time |
| at 120°C |
16-24mins |
| at 140°C |
6-9mins |
| at 160°C |
3-5mins |
Mechanicaland physical properties
Test System: WDE1891K/WDH1891K/Silica flour Mixture ratio:100/100/350 Cure conditions:140°C*2hours.
| Properties |
Standard |
Value |
Properties |
Standard |
Value |
| Tg. (DSC) |
ISO11357-2 |
100-120°C |
Thermal conductivity |
ISO 8894-1 |
0.8-0.9Wmk |
| Tensile strength |
ISO527 |
60-80N/mm2 |
Thermal degradation temperature |
DTA |
>320°C |
| Flexural strength |
ISO178 |
100-140N/mm2 |
Water absorption (23°Cx10days) |
I EC 60062 |
0.10-0.20 %by wt. |
| Compressive strength - |
ISO604 |
150-180N/mm2 |
\teter absorption (100°Cx60 mins) |
I EC 60062 |
0.08-0.15 %by wt. |
| Impact strength |
ISO179 |
1O-16kJ/m2 |
Surface resistivity |
|
1014Ω |
| Cure shrinkage |
ISO178 |
0.&-1.0% |
Volume resistivity |
|
1015Ω.cm |
| Flammability (4mm) |
|
HB |
Dielectric strength |
|
30 kv/mm |
| |
|
|
Loss factor |
|
0.02 |
Package
Epoxy resin 20Kg/pail or 240Kg/pail Hardener20Kg/pail or 240Kg/pail.
First Aid
Contamination of the eyes by resin hardener or casting mix should be treated immediately by flowing with clean running water for 10 to 15 minutes. Adoctor should then be consulted. Material smeared orsplashed on the skin should be dabbed off,the contaminated area then washed and treated with a cleaning cream(see above).A doctor should be consulted in the event of severe irritation or burns. Contaminated clothing should be changed
immediately. Anyone taken ill after inhaling vapor should be moved of doors immediately. In all case of doubt call for medical assistance.
Product Applications
Our Epoxy Resin Raw Material is suitable for 10~1100KV Electrical Insulation Components.
Storage and shippment
Storage of the components (resin or hardener etc.)at 6-35°C in tightly sealed and dry. Under these conditions ,the shelf life will correspond to the expiration date (3 years) .After this date, the product may be processed only following re-analysis. Partial emptied containers should be closed tightly immediately after use.
Due to the storage conditions, this product may experience a small amount of precipitation during storage, which is a normal phenomenon. After stirring evenly, it can be used normally.
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