Von Roll : Imp­reg­na­ting Resins and coatings

IMPREGNATING RESINS AND COATINGS

2 | IMPREGNATING RESINS AND COATINGS

WE ENABLE ENERGY

As one of the oldest industrial companies in Switzerland, founded in 1803, we focus on products and systems for power generation, transmission and distribution, rotating machines and mechanical engineering. Von Roll is the global market leader for insulation products and the only company to offer the complete range of insulation prod-ucts, composites, consulting, tests and services for the electrotechnical industry.

For more than 100 years, we have been making outstand-ing contributions to this market, developing a number of highly innovative products that have enabled both steady increases in power output and smaller and more compact machines.

Customers enjoy the following benefits:

Training in insulation materials and systems

One single source for all insulating materialsThorough expertise from power generation and transmission to its efficient utilization

Proven compatibility for system components

Testing at Von Roll of both materials and systems

Consulting for applications and technologies

3 | IMPREGNATING RESINS AND COATINGS

ATMOSPHERIC DIP

AND HOT DIP PROCESS

Dipping is the most common impregnation process for any kind of low-voltage electrical component, such as motors, generators or transformers. It is highly versatile with simple processing equipment.

Nevertheless, the resin choice is always highly critical due to environmental constraints (smell, ire risks, irritation, toxicity and more), process issues (stability, viscosity, reactivity, productivity, etc.) and technical properties (thermal class, chemical resistance, electrical properties, bonding strength, etc.).

Product NameChemistryViscosity at 23°C (cps)Typical Curing Temp (°C)UL 1446 TP rating MW 35 (°C)

Main Characteristics

Solvent-based

Hi-THERM® BC-346AModified Polyester

230

150

200°C

High-temperature-resistant, tough, flexible, meets MIL-I-24092D standard, universal application. Also available in black color.

Hi-THERM® BC-359

Polyurethane

260

120

180°C

Low-temperature curing, flexible with superior moisture and chemical resistance.

DOLPHON® BC-352

Epoxy

200

150

180°C

High strength, moisture, chemical and refrigerant resistant

PERMAFIL® 74043

Epoxy

1200

150

180°C

High strength, moisture, chemical and refrigerant resistant

Water-based

AQUA-THERM® BC-365

Polyester

Adjustable

135

180°C

Environmentally-friendly, low VOCs. Dilute with water to desired solids & viscosity.

AQUA-THERM® BC-365-LTCPolyester

Adjustable

130

180°C

Lower temperature curing environmen-tally friendly, low VOC water reducible polyester. Easy to dilute.

AQUA-THERM® BC-365-FCPolyester

Adjustable

125

180°C

Lowest temperature curing environ-mentally friendly, low VOC water reducible polyester. Easy to dilute.

Solventless

PERMAFIL® 724

Unsaturated Polyester

700

150

180°C

Medium viscosity for dipping, high bonding strength, fast cureDOLPHON® CC- 1170

Unsaturated Polyester

900

150

180°C

Medium viscosity, semi-rigid for large machines or thermal cycling resis-tance.

PERMAFIL® 716

Unsaturated Polyester

900

150

180°C

Blended monomer polyester with enhanced stability and improved film build. High strength and fast cure.

Typical Curing Temp (°C)

Product Name

ChemistryViscosity at 23°C (cps)

Low odor, high flash point, high build solventless polyester resin.

High flash point, low odor, excellent tank stability. EN45545-2 approved for railway applications.

Higher build version in our XL-2100 series. High flash point, low odor and very low emissions.

Low odor, low viscosity, high bond strength with good thermal resistance. Tank stable resin with low VOCs.

Highly chemical- and moisture-resis-tant resin, good adhesion

Very low emission epoxy resin, Excellent stability and dielectric properties up to class H.

High reactivity version of our very low emission epoxy resin for hot dipping and curing using the joule effect. Excellent stability and dielectric properties up to class H.

UL 1446 TP rating MW 35 (°C)

Main Characteristics

Low odor, low viscosity. High stability and excellent bonding strength.

Dipping process for stator impregnation.

COATED MATERIALS SELECTOR GUIDE | 5

TRICKLE AND DIP-ROLL PROCESS

Product Name

Trickling and roll-through processes are more convenient when high productivity is required on standard small/medium motors and generators. These two pr ocesses enable a higher resin filling factor with less resin usage.

Due to hot processes, the resin quality has to be carefully managed. Von Roll has developed and optimized a complete range of resins that combine safety, quality and fast processing.

Solventless

DOLPHON® CC-1096

DOLPHON® CC-1174

DOLPHON® CC-1170-TR

Gel Coat

Damisol 3007-2

Low VOC

DOLPHON® CC-1105-OPTDOLPHON® XL-2101

DOLPHON® XL-3101-OPTDOLPHON® XL-3105

DOLPHON® CC-1180 HiRDamisol 3500

HiR

Chemistry

Unsaturated PolyesterUnsaturated PolyesterUnsaturated PolyesterPolyesterimide gel coatUnsaturated PolyesterUnsaturated PolyesterUnsaturated PolyesterUnsaturated PolyesterEpoxyEpoxy

Viscosity at 23°C (cps)

Typical Curing Temp (°C)UL 1446 TP rating MW 35 (°C)

Main Characteristics

130

130

125

120

150

130

130

120

170

160

180°C

180°C

180°C

180°C

200°C

180°C

180°C

180°C

180°C

180°CTwo-part resin with styrene, low viscosity, high bonding strength, excellent penetration, fast cure at low temperature.

Two part resin with vinyl toluene, low viscosity, high bonding strength, excellent penetration, fast cure at low temperature

Two part resin with vinyl touene, low viscosity, semi-rigid for large machines or thermal cycling resistance.

Two-part resin, highly reactive filled gel coat. High vibration resistance.

One component resin, highly stable and strongly reactive.

One component resin, highly stable and strongly reactive.

New generation one component resin. Low odor, low hazard level, highly stable resin with fast cure time.

Two component version of the XL®-3100 series. Fastest cure with good mixed pot life.

One component highly reactive epoxy. High moisture and chemical resis-tance. Good adhesion.

High reactivity version of our very low emission epoxy resin for hot dipping and curing using the joule effect. Excellent stability and dielectric properties up to class H.