Arcwire IR 200 Solventless Trickle and VPI Resin
Solventless class 200 N resin for trickle impregnation on a rotating, current-preheated fixture and for vacuum pressure impregnation. With no solvent to leave the film, one treatment reaches the slot fill that a solvent-borne varnish needs several cycles to build.
Grade Arcwire IR 200 | Range Electrical Insulation and Wire Enamels | Technology Solventless heat-curing reactive resin, with a monomer-free version
Technical Data Sheet
Arcwire IR 200
Issue 2026.09
1. Product description
A solventless class 200 N resin supplied for trickle impregnation on a rotating fixture with preheat by current injection, and for vacuum pressure impregnation in a vessel with a separate storage tank. No solvent leaves the film, so one treatment fills the slot that a solvent-borne varnish needs several cycles to reach, and oven emissions are lower. Pot life, storage temperature, viscosity and gel time govern the process instead of drying, so the grade is set against the shop cycle time and fixture temperature, and a monomer-free version is supplied where reactive monomer extraction is the constraint.
2. Features
- One treatment fills the slot
- Suited to trickle impregnation and to vacuum pressure impregnation
- Gel time and viscosity matched to the shop cycle
- Monomer-free version where reactive monomer extraction is a site constraint
- Class 200 N
3. Recommended uses
Impregnation of stators, rotors and armatures, form-wound and random-wound coils and dry-type transformer windings, on trickle lines and in VPI plants.
Substrates. Wound stators, rotors and armatures, form-wound and random-wound coils, dry-type transformer windings, over enamelled wire and compatible slot insulation.
4. Typical properties
| Property | Typical value | Method |
|---|---|---|
| Technology | Solventless heat-curing reactive resin, with a monomer-free version | Formulation |
| Appearance | Clear liquid, amber to brown | Visual inspection |
| Non-volatile matter | 97 to 100 per cent by weight | ISO 3251, as mass retained under the cure schedule of the grade |
| Supply viscosity | Set against the trickle or VPI cycle and the fixture temperature; confirmed on the Certificate of Analysis | IEC 60455-2 |
| Density | 1.05 to 1.25 g/cm³ at 23 °C | ISO 2811-1 |
| Gel time at 100 °C | 6 to 30 min, shorter for trickle and longer for VPI, set against the shop cycle | IEC 60455-2 |
| Thermal class of the material | 200 N | IEC 60085 for the designation; thermal endurance to IEC 60216-1 |
| Bond strength, helical coil | 80 to 300 N at 23 °C, falling to 15 to 80 N at 200 °C | IEC 61033 |
| Stability in the storage tank | Viscosity and gel time drift governed by storage temperature; checked at set intervals | Customer or supplier protocol |
Typical values, not a specification. Values for each batch are given on its Certificate of Analysis.
5. Application
| Parameter | Guidance |
|---|---|
| Method | Trickle onto a rotating preheated winding, or vacuum pressure impregnation followed by oven cure |
| Winding preparation | Winding clean and dry. For trickle, preheated by current injection on the rotating fixture to the set temperature. For VPI, dried in the oven and cooled to near the storage tank temperature before it enters the vessel, so that heat carried in does not shorten the gel time of the tank resin |
| Trickle | Resin metered onto the turning hot winding, drawn into the slot by capillary action and gravity, and gelled before it can run out |
| Vacuum pressure impregnation | Vacuum to draw the air from the slot, resin admitted, then pressure applied; surplus resin returned to the storage tank |
| Dilution | Not diluted; supplied ready for use |
| Cure | Gelled on the fixture or in the oven, then oven cured on the schedule stated for the grade, set against unit mass |
| Process control | Storage tank held at controlled temperature, with viscosity and gel time checked at set intervals |
Process. Trickle onto a rotating preheated winding, or vacuum pressure impregnation followed by oven cure. Gel time and viscosity matched to the cycle. Cold storage and controlled pot life required. Thermal class 200 N.
6. Storage and handling
Store cold in closed containers at the temperature stated on the label, and hold VPI tank resin at controlled temperature with regular viscosity and gel time checks. Shelf life is stated on the label and Certificate of Analysis. Handle and use the product in line with its Safety Data Sheet.
7. Safety and regulatory information
Read the Safety Data Sheet before use. Safety Data Sheets and regulatory declarations are issued by our technical centre against the product and batch supplied, so they are sent on request rather than published. Request a Safety Data Sheet or declaration.
This Technical Data Sheet is published for on-screen reference. The information is given in good faith from laboratory and application experience and describes typical values; it is not a specification and does not replace a trial on your own substrate and line. Arctic Materials may revise this sheet without notice. Issue 2026.09.
Technical Data Sheets on this site are for on-screen viewing. For a controlled copy, write to tech@arcticmaterials.com.
Other grades in this range
Need a Safety Data Sheet, a regulatory declaration or a grade specified to your line? Contact our technical centre.