ARATHANE® CW 5620 / ARATHANE® HY 5610

ARATHANE® CW 5620 / ARATHANE® HY 5610 is a polyurethane, halogen-free, casting and impregnating system for processing and curing at room temperature. Soft multipurpose polyurethane system for pressure-sensitive devices. Available in various colors. It is used in Transformers, filters, capacitors, etc.

RTU Product Type: Casting Resin, Impregnating Resin System

Product End Uses: Instrument Transformers, Pressure Sensitive Devices, Screen Printing Machines

Chemical Family: Polyurethanes (PU)

Composites Processing Methods: Casting, Impregnation

Features: Excellent Flow Properties, Flame Retardant, Good Thermal Conductivity, Non Abrasive, Thermal Shock Resistant, Vibration Resistance

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Enhanced TDS

Identification & Functionality

Features & Benefits

Labeling Claims
Ready-to-Use Product Features
Product Features
  • Halogen free system.
  • Excellent flow properties.
  • Good thermal conductivity.
  • Non abrasive casting system.
  • Good thermal shock resistance.
  • Flammability: UL 94 V-0 (10 mm), only blue version certified

Applications & Uses

Applicable Processes
Application Area
Composites Processing Methods
Product End Uses
Markets
Applications
Processing Information

Mix Ratio

Component Description Parts by weight

Parts by volume

ARATHANE® CW 5620 Polyol 100 100
ARATHANE® HY 5610 Isocyanate 22 25

 

Gel Time, Viscosity and Curing

 

Property Material Test Method Unit Value
Mix viscosity at 25°C ARATHANE® CW 5620 / ARATHANE® HY 5610 Rheomat mPa·s 1300
Gel time at 25°C ARATHANE® CW 5620 / ARATHANE® HY 5610 Gelnorm min 70
Pot life (Time to reach 5000 mPa·s) ARATHANE® CW 5620 / ARATHANE® HY 5610 Rheomat min 25
Minimum curing cycle

24 hours at RT or 6 hours at 80°C

     

 

Processing Information

 

Preparation

CW 5620 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

The casting mix is best prepared by heating the resin up to 40 – 50 °C before stirring in the hardener. Brief degassing of the mix under 5 – 10 mbar vacuum improves the mixture homogeneity and enhances the dielectric properties of the castings.

 

Curing

To determine whether cross-linking 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 cross-linking and thus a different glass transition temperature.

 

Processing Methods

  • Casting / impregnating.
  • Manually or with automatic mixing and dosing equipment.

 

Mechanical and Physical Properties

 

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

Glass transition temperature ISO 6721 °C - 20
Shear modulus ISO 6721 MPa - 55
Temperature index TI IEC 60216 °C - 152
Relative temperature index RTI UL 746B °C E96722 130
Thermal class IEC 60085 - - B
Tensile modulus ISO 527 MPa - 21
Tensile strength ISO 527 MPa - 7
Elongation at break ISO 527 % - 70
Thermal linear coefficient Alpha 1 ISO 11359-2 ppm/K - 55
Thermal linear coefficient Alpha 2 ISO 11359-2 ppm/K - 150
Thermal conductivity ISO 8894-1 W/mK - 0.5
Hardness DIN 53505 Shore A / D - 85 / 40
Glow-wire test (850°C) IEC 60695-2-11 - VDE 0471 passed
Flammability UL 94 Blue color E96722 V-0 (10 mm)
Water absorption 1 day at 23°C ISO 62/80 % by wt. - 0.15
Water absorption 10 days at 23°C ISO 62/80 % by wt. - 0.5
Water absorption 30 min at 100°C ISO 62/80 % by wt. - 0.33

 

Electrical Properties

 

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

Dielectric strength (2 mm specimen) IEC 60243-1 kV/mm 25
Dielectric loss factor (tan δ, 50Hz, 25°C) IEC 60250 % 11
Dielectric constant (εr, 50Hz, 25°C) IEC 60250 - 6
Volume resistivity (ρ, 25°C) IEC 60093 Ω cm 1013
Electrolytic corrosion IEC 60426 grade A/1
Tracking resistance IEC 112/79 CTI > 600

Properties

Flame Rating

Regulatory & Compliance

Certifications & Compliance

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® 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.