PE7501 ELECTROLUBE | Alldatasheet

Document overview

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Technical content

Clear Digoutable Polyester Resin PE7501 is a clear amber, flexible encapsulation resin which due to its ‘digoutable’ properties allows easy removal of cured material from broken or defective units. It us es an innovative blend of t echnologies to provide the performance afforded by polyurethane resins whilst removing the associated health hazards.

  • Isocyanate free; high performanc e, flexible resin which does not use hazardous isocyanates to cure
  • Excellent hardness stability over a wide temperature range; flexible at temperature extremes
  • Low moisture sensitivity during and after cure; exhibits excellent electrical properties
  • Soft, re-enterable; a ids ease of rework Approvals RoHS-2 Compliant (2011/65/EU): Yes Typical Properties Liquid Properties: Colour Part A - Resin Pale Straw Colour Part B - Hardener Pale Straw Density Part A - Resin (g/ml) 0.95 Density Part B - Hardener (g/ml) 1.04 Part A Viscosity (mPa s @ 23ºC) 3500 Part B Viscosity (mPa s @ 23ºC) 5600 Mixed System Viscosity (mPa s @ 23ºC) 4300 Mixed System Viscosity (mPa s @ 40ºC) 2400 Mixed System Viscosity (mPa s @ 60ºC) 1900 Mix Ratio (Weight) 6.8:1 Mix Ratio (Volume) 7.45:1 Usable Life (20°C) 50* Gel Time (23°C) 110 minutes* Cure Time (23°C) 48 hours* Cure Time (95 °C) 60 minutes Storage Conditions (additional information below) Dry Conditions: Above 5ºC, Below 35ºC Shelf Life 12 months Exotherm (Measured on 100ml sample; cylinder of diameter 49.4mm @ 23ºC) <40oC Shrinkage <1% *Values based on a 30g sample; full properties may be achieved after 7 days at ambient conditions, elevated temperatures will reduce these times.

Cured System: Cured Density (g/ml) 0.96 Temperature Range (°C) -50 to 110 Max Temperature Range (Short Term (°C)/30 Mins) (Application and Geometry Dependent) 120 Shore Hardness A16 Colour (Mixed System) Pale Straw Flame Retardance No Shore Hardness @ 100ºC @ 25ºC @ -60ºC A15 A16 A45 Water Absorption (9.7mm thick disk, 51mm diameter) 10 days @ 20ºC / 1 hour @ 100ºC < 0.4% / <0.4% Elongation At Break Not measured Dielectric Strength (kV/mm) 12 Volume Resistivity (ohm-cm) 10 Dielectric Constant @ 50Hz 4.0 Mixing Procedures Resin Packs When in Resin pack form, the resin and hardener are mixed by re moving the clip and moving the contents around inside the pack until thoroughly mixed. To remove the cl ip, remove both end caps, grip each end of the pack and pull apart gently. By using the removed clip, take spe cial care to push unmixed material from the corners of the pack. Mixing normally takes from two to four mi nutes depending on the skill of the operator and the size of the pack. Both the resin and hardener are evacuated prior to packing so the system is ready for use immediately after mixing. The corner may be cut from the pack so that it may be used as a simple dispenser. 1 2 3 4 5 6

When mixing, care must be taken to avoid the introduction of ex cessive amounts of air. Automatic mixing equipment is available which will not only mix both the resin and hardener accurately in the correct ratio but do this without introducing air. Containers of Part A (Resin) and Part B (Hardener) should be kept sealed at all times when not in use to prevent the ingress of moisture. Bulk material must be thoroughly mixed before use. Incomplete mixing will result in erratic or partial curing. Additional Information Viscosity: The viscosity of the Part A (re sin) and the mixed system will d ramatically reduce with elevated temperatures: Cleaning: It is far easier for machines & containers to be cleaned before the resin has been allowed to cure. Electrolube’s RRS is suitable for cleaning machines an d containers and cured resin may be slowly softened and removed by soaking in our RRS. Curing: PE7501 can be heat cured immediately however this will be volum e dependent. Tests in the final unit should be conducted to determine the optimum acc elerated cure profile. Curing at room temperature is also possible; the majority of pr operties will be reached after 24 hours however some slight surface tack may remain. Ful l properties will be achieved after 7 days. Storage: Storage should be in a dry place, kept above 5°C and below 35°C. Excursions outside of this temperature range are permitted for transportation. The product must be allowed to return to room temperature prior to use. If any changes have occurred during exposure to extreme temperatures, heat to 40°C and stir the product. Health & Safety: Always refer to the Health & S afety data sheet before use. Thes e can be downloaded from www.electrolube.com Revision 0: Mar 2015