High Performance Cast Elastomers   
Neuthane 802-NG Series (3 Component) MDI - Ester Quasi Systems (55-95 Shore A)

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Neuthane 802AWB Three component PLASB Low hardness

Uncatalysed
Neuthane 802NG UC - 3-Component C44 Injection

 

 

 

Neuthane 802-NG Series (3 Component) MDI - Ester Quasi Systems (55 - 95 Shore A)

Properties

The Neuthane 802 series are high performance MDI - ester quasi systems designed to produce items for use in arduous application areas.

They offer:

  • a high level of physical properties
  • good cut and abrasion resistance
  • good chemical resistance
  • higher levels of physical properties at low end of
    the hardness range compared to TDI systems
  • low process temperatures

Typical Applications

  • Wheels (e.g. pallet truck)
  • Mining and quarrying (e.g. screen decks, scraper blades)
  • Oil and gas industry (e.g. gaskets, pipe pigs)
  • Automotive (e.g. suspension bushes)
  • Concrete Industry (e.g. moulds for decorative slabs and walls)

Processing can be by hand or by dispensing machine

Hand Processing

  • Melt ISO component at 45°C, POLYOL components at 55°C for 12-24 hours
  • Ensure components are completely liquid and thoroughly mixed prior to use
  • Bring all components to the recommended process temperature.
  • Add pigments and Antifoam (as applicable) to the polyol component whilst mixing
  • It is recommended that air be removed from the ISO component under vacuum prior to addition of the curative
  • Add all components and thoroughly mix ensuring that no unmixed materialis left on the container sides (if necessary the mix can be transferred to a
    second clean containerand mixed again)
  • Cast into moulds, preheated to the recommended temperature
  • Cure as recommended

Processing Considerations

  • Avoid moisture contamination of all materials.
  • Part used containers should be flushed with dry nitrogen and
    resealed immediately after use
  • It is vital to ensure that both components are completely liquid and
    thoroughly mixed prior to use
  • Due to the exothermic nature of the system, larger mixes will have a shorter pot life

Alternatives

  • Humid/Wet - PTMEG ether based systems should be considered: Neuthane 100 [TDI], Neuthane 600 [MDI] or Neuthane 500 [Aliphatic]
  • Dynamic/Resilience - PTMEG ether based materials should be considered: Neuthane 100 [TDI], Neuthane 600 [MDI] or Neuthane 801 [MDI Quasi]
  • Temperature – Neuthane 100 [TDI PTMEG] or Neuthane 500 [Aliphatic Isocyanate] systems may be considered

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High Performance Cast Elastomers   
Neuthane 802-NG (3 Component MDI - Ester Quasi Systems (55 - 95 Shore A)
Neuthane 802-NG Hardness
Shore A
55 60 65 70 75
Mix Ratio N802 ISO-NG by weight 100 100 100 100 100
Mix Ratio N802 POLY-NG UC by weight 274.4 191.5 163.14 143.8 121.04
Mix Ratio 1,4 Butane Diol by weight 3.73 7.84 9.24 10.19 11.32
Neuthane 802 ISO-NG Temperature °C 45 45 45 45 45
Neuthane 802 POLY-NG Temperature °C 55 55 55 55 55
1,4 Butane Diol Temperature °C 45 45 45 45 45
Optimum Mould Temperature °C 90 - 100 90 - 100 90 - 100 90 - 100 90 - 100
Pot life (250g mix adjustable with Cat 44 level)  • • • • (See footnote) minutes 2-4 2-4 2-4 2-4 2-4
Recommended Cure Temperature / Time °C / hrs 70 / 16 70 / 16 70 / 16 70 / 16 70 / 16
Hardness DIN 2240-91 Shore A 55 60 65 70 75
DIN 2240-91 Shore D - - - - -
100% Modulus BS 903 Pt A2 - ISO 37 Mpa 1.5 1.9 2.6 3.1 3.5
300% Modulus BS 903 Pt A2 - ISO 37 Mpa 2.1 3.2 4.6 5.8 5.9
Tensile Strength BS 903 Pt A2 - ISO 37 Mpa 18 24 26 27 36
Elongation at Break BS 903 Pt A2 - ISO 37 % 680 680 620 610 600
Tear (Die C) ISO 34-1 KN/m 29 42 53 59 71
Tear (Trouser) ISO 34-1 N/mm 8 11 18 18 19
Abrasion loss DIN 53516 mm³ <40 <40 <40 <40 <40
Resilience ASTM D 2632-92 % 52 50 50 49 45
Compression Set ISO 815 % 30 30 30 30 30
Specific Gravity g/cm³ 1.16 1.17 1.17 1.18 1.18
Neuthane 802-NG Hardness
Shore A
80 85 90 95
Mix Ratio N802 ISO-NG by weight 100 100 100 100
Mix Ratio N802 POLY-NG UC by weight 88.1 74.4 57.94 42.73
Mix Ratio 1,4 Butane Diol by weight 12.95 13.60 14.43 15.20
Neuthane 802 ISO-NG Temperature °C 45 45 45 45
Neuthane 802 POLY-NG Temperature °C 55 55 55 55
1,4 Butane Diol Temperature °C 45 45 45 45
Optimum Mould Temperature °C 90 - 100 90 - 100 90 - 100 90 - 100
Pot life (250g mix adjustable with Cat 44 level) minutes 2-4 2-4 2-4 2-4
Recommended Cure Temperature / Time °C / hrs 70 / 16 70 / 16 70 / 16 70 / 16
Hardness DIN 2240-91 Shore A 80 85 90 95
DIN 2240-91 Shore D - - - -
100% Modulus BS 903 Pt A2 - ISO 37 Mpa 4.9 6.1 7.6 9.6
300% Modulus BS 903 Pt A2 - ISO 37 Mpa 9.8 11.1 14.2 17.3
Tensile Strength BS 903 Pt A2 - ISO 37 Mpa 46 53 53 56
Elongation at Break BS 903 Pt A2 - ISO 37 % 600 600 590 570
Tear (Die C) ISO 34-1 KN/m 83 92 100 116
Tear (Trouser) ISO 34-1 N/mm 24 26 32 43
Abrasion loss DIN 53516 mm³ <40 <40 <40 <40
Resilience ASTM D 2632-92 % 40 36 36 35
Compression Set ISO 815 % 28 28 29 30
Specific Gravity g/cm³ 1.18 1.18 1.18 1.18

• • • • Footnote – Precatalysed 802NG system also available – please contact Notedome’s Technical Dept for further details.

Information contained in the data is, to the best of our knowledge, true and accurate. Since conditions of use are beyond our control, no warranty is given or implied in respect of any recommendations or suggestions made by ourselves, nor is freedom from patent infringement inferred