SynChem – Resins & Varnishes Synthite ER-41 Polyurethane enamel varnish
Synthite ER-41 is a red, fast drying enamel varnish.
Synthite ER-41 has the following excellent properties:
- very fast drying
- excellent chemical resistance
- oil and moisture resistant
- hard, smooth, abrasion resistant film
- excellent adhesion
- transformer oil resistance ASTM D 115-55
- corrosion and humidity resistance
Application
Synthite ER-41 is mainly applied in:
- stator coils
- transformer coils
- armature coils
- bus bars
- field coils
- control coils
- collector rings
- interior of oil tanks
Standards
- Class H (180 °C) UL-File-Nr. OBOR2.E317427 + OBSS2.E317429
- MW 35-C: 180 °C
- MW 28-C: 130 °C
Delivery forms
5 kg, 25 kg container and spray bottles on request.
Storage
Shelf life of ER-41 is 24 months whenstored in original closed containers at max. 30 °C protected from direct sunlight and moisture.
Hardening
Air drying time on copper plate: 60 min. set to touch.
Processing
For spraying applications Synthite ER-41 must be thinned with 15 % of Dolph's® T-200 thinner.
It is supplied with a viscosity suitable for application by brush.
Please observe the respective safety data sheet.
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Technical data
Mechanical
| Property | Unit of measure | Conditions | Value | Test method |
|---|---|---|---|---|
| Specific density | g/l | |||
| Viscosity | s | 25 °C | 90-120 | Ford Cup 4 |
| Specific density | g/cm³ | 25 °C | 0.9-1.0 | |
| Colour | Red |
Electrical
| Property | Unit of measure | Conditions | Value | Test method |
|---|---|---|---|---|
| Dielectric strength | kV/mm | after 24 h water immersion / 0.025 mm film thickness | 48 | ASTM D-115 |
| Dielectric strength | kV/mm | dry / 0.025 mm film thickness | 80 | ASTM D-115 |
Chemical
| Property | Conditions | Blistering | Rusting | Cracking | Test method |
|---|---|---|---|---|---|
| Resistance | salt water | no | no | no | ISO 4628/2-3-4 |
| Resistance | water | no | no | no | ISO 4628/2-3-4 |
| Resistance | 10 % sulfuric acid | no | no | no | ISO 4628/2-3-4 |
| Resistance | 1 % NaOH dilution | no | no | no | ISO 4628/2-3-4 |