ARATHANE® CW 5660 / ARATHANE® HY 5610

ARATHANE® CW 5660 / ARATHANE® HY 5610 is a polyurethane, casting and impregnating system for processing and curing at room temperature. The cured resin system is flexible even at low temperatures, flame retardant, and has high thermal conductivity and excellent thermal resistance. It contains non-abrasive fillers and no halogenated flame-retardants. It is used in Solar inverters, modules, pressure pressure-sensitive devices.

RTU Product Type: Casting Resin, Impregnating Resin System

Product End Uses: Diodes, Electrical Components, Modules, Pressure Sensitive Devices, Solar Inverter, Stators

Chemical Family: Polyurethanes (PU)

Composites Processing Methods: Casting, Encapsulation, Impregnation, Potting

Features: Excellent Flow Properties, Flame Retardant, Good Thermal Conductivity, High Thermal Endurance, Low Temperature Flexibility, Non Abrasive, Room Temperature Curing, Thermal Resistance, Thermal Shock Resistant

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Enhanced TDS

Identification & Functionality

Features & Benefits

Labeling Claims
Ready-to-Use Product Features
Product Properties
  • Halogen free system.
  • Excellent flow properties.
  • Low temperature flexibility.
  • Non abrasive mineral fillers
  • Good thermal shock resistance.
  • Flame retardant UL 94 V-0 (3 mm).
  • High thermal endurance, UL RTI 160
  • Temperature range of use: -50° to 165°C
  • Flexible system even at low temperatures.
  • Class F PU system.
  • Flame retardant.

Applications & Uses

Properties

Flame Rating

Regulatory & Compliance

Certifications & Compliance

Technical Details & Test Data

Electrical Properties
Property Standard Unit Value
Dielectric strength (2 mm specimen) IEC 60243-1 kV/mm 19
Dielectric loss factor (tan δ, 50Hz, 25°C) IEC 60250 % 8.2
Dielectric constant (εr, 50Hz, 25°C) IEC 60250 - 9.1
Volume resistivity (ρ, 25°C) IEC 60093 Ω·cm 1.8 × 1012
Electrolytic corrosion IEC 60246 Grade A-1
Tracking resistance IEC 60112/79 CTI > 600

 

Note: Determined on standard test specimen at 23°C. Cured for 24h/RT + 6h/80°C.

Processing Information

Gel Time, Viscosity and Curing

 

Property Material Method Unit Value
Mix Viscosity at 25°C ARATHANE® CW 5660 / ARATHANE® HY 5610 Rheomat mPa·s 2000
Mix Viscosity at 40°C ARATHANE® CW 5660 / ARATHANE® HY 5610 Rheomat mPa·s 940
Gel time at 25°C - ISO 9396 min 470
Gel time at 60°C - ISO 9396 min 93
Pot life at 40°C (Time to reach 5000 mPa·s) - Rheomat min 60
Minimum Curing Cycle 24 hours at RT or 6 hours at 80°C

 

Preparation

  • ARATHANE® CW 5660 / ARATHANE® HY 5610 contains fillers, which tend to settle over time.
  • It is therefore recommended to carefully homogenize the complete contents of the container before use.
  • In the storage vessels of the production equipment, the pre-filled products should be stirred up from time to time to avoid sedimentation and irregular metering.

 

Mixing:

  • Brief degassing of the mix under 2 – 10 mbar vacuum improves the mixture homogeneity and enhances the dielectric properties of the castings.
  • Mixing of the components can be done at room temperature, heating of the polyol is not required.

 

Curing:

  • To determine whether crosslinking has been carried to completion and the final properties are optimal, it is necessary to carry out relevant measurements on the actual object or to measure the glass transition temperature.
  • Different gel and cure cycles in the customer’s manufacturing process could lead to a different degree of crosslinking and thus a different glass transition temperature.

 

Processing Methods

  • Casting / Impregnating.
  • Manually or with automatic mixing and dosing equipment.
Mechanical & Physical Properties
Property Standard Unit Value
Glass transition temperature ISO 11359-2 °C -16
Modulus in Torsion G’ at RT ISO 6721 MPa 11
Tensile modulus ISO 527 MPa 17
Tensile strength ISO 527 MPa 2.4
Elongation at break ISO 527 % 51
Coefficient of thermal expansion - alpha 1 ISO 11359-2 ppm/K 44
Coefficient of thermal expansion - alpha 2 ISO 11359-2 ppm/K 133
Thermal conductivity ISO 8894-1 W/mK 0.7
Hardness DIN 53505 Shore A / D 85 / 29
Flammability UL 94, UL File: E96722 - V-0 (3 mm)
Relative temperature index RTI UL 746B, UL File: E96722 °C 160
Water absorption (1 day at 23°C) ISO 62/80 % by wt. 0.28
Water absorption (10 days at 23°C) ISO 62/80 % by wt. 0.77

 

Note: Determined on standard test specimen at 23°C. Cured for 24h/RT + 6h/80°C.

Storage & Handling

Storage Conditions
  • Store the components in a dry place according to the storage conditions stated on the label in tightly sealed original containers.
  • Under these conditions, the shelf life will correspond to the expiry date stated on the label.
  • After this date, the product may be processed only after reanalysis.
  • Partly emptied containers should be tightly closed immediately after use.
  • ARATHANE® CW 5660 / ARATHANE® HY 5610 must be protected from moisture. Storage tanks should be blanketed with dry air or nitrogen.
  • Storage at temperatures above 50°C is not recommeded, since this can lead to the formation of insoluble solids and also the viscosity buid-up increases on extended storage.
  • Storage at low temperature is not recommeded because it may lead to some crystallisation.
  • Crystallised material must be melted out immediately by short time heating.
  • For information on waste disposal and hazardous products of decomposition in the event of a fire, refer to the Material Safety Data Sheets (MSDS) for these particular products.