Neuthane™ 3600 MDI-PTMEG Ether Quasi Systems
Neuthane™ 3600 MDI-PTMEG Ether Quasi Systems
Properties
Neuthane™ 3600 is a high performance MDI – PTMEG ether rotational casting prepolymer. It is based on 2000 molecular weight PTMEG polyol.
When used with Neuthane™ or self-formulated curatives it will produce roller coverings for use in arduous application areas.
Features
- a high level of physical properties
- very good dynamic performance
- good hydrolysis resistance
- ease of use
- high resiliance
- processing without moulds
Typical Applications
- Steel mill rollers
- Paper mill rollers
Processing can be by hand or by dispensing machine
Hand Processing
- Melt prepolymer at 50-70°C for 12-24 hours
- Heat the prepolymer and curative to the recommended temperature
- Ensure that the curative is thoroughly mixed prior to use (the storage tank on the machine should be fitted with agitation to prevent separation during use)
- Degass to remove air
- Dispense at 700-2000g per minute*
- Adjust rotation and traverse speed until a smooth build up is achieved*
- Cure as recommended
* This will vary depending upon diameter of roller. As a general guide the output rate, rotational and traverse speeds will all increase as the diameter of the roller increases
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 that the POLYOL component is 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
- Dynamic/Resilience – PTMEG systems should be considered: Neuthane™ 600 [MDI prepolymer] or Neuthane™ 801 [MDI quasi]
- Solvents/Abrasion - ester based systems should be considered: Neuthane™ 700 [MDI prepolymer], Neuthane™ 802 [MDI quasi] or Neuthane™ 200 [TDI prepolymer]
- Humid/Wet - Aliphatic Isocyanate based systems should be considered: Neuthane™ 500 series
Neuthane™ 3600 MDI-PTMEG Ether Prepolymer (6.45% NCO)
| Neuthane™ | 3600 | ||
| %NCO (mid-point) | % | 6.45 | |
| Curative | 1,4 - Butanediol | ||
| Suggested stoichiometry | % | 98.5 | |
| Mix ratio curative per 100 parts resin | by weight | 26 | |
| Resin temperature | °C | 75 | |
| Curative temperature | °C | 25 | |
| Recommended mould temperature | °C | 105 | |
| Viscosity @100°C | |||
| Pot life (on a 500g mix) | minutes | 10 | |
| Recommended cure temperature / time | °C / hrs | 105 / 16 + 24 at RT | |
| Hardness | DIN 2240-91 | Shore A | 84 |
| DIN 2240-91 | Shore D | - | |
| 100% modulus | BS 903 Pt A2 - ISO 37 | lb/in²
(Mpa) |
780
(5.4) |
| 300% modulus | BS 903 Pt A2 - ISO 37 | lb/in²
(Mpa) |
1700
(11.7) |
| Tensile strength | BS 903 Pt A2 - ISO 37 | lb/in²
(Mpa) |
6210
(42.8) |
| Elongation at break | BS 903 Pt A2 - ISO 37 | % | 560 |
| Tear strength | BS 903 Pt A3 - ISO 34-1 | lb/in
(KN/m) |
510
(89.4) |
| Abrasion loss | DIN 53516 | mm³ | 12 |
| Resilience | ASTM D 2632-92 | % | 65 |
| Specific gGravity | g/cm³ | 1.21 | |
Neuthane™ 3200/765 - MDI - Ester Rotational Casting Systems (85-95 Shore A)
| Neuthane™ | 3200/765 | 3200/765 | 3200/765 | ||
| Curative | 3285/765 | 3290/765 | 3295/765 | ||
| Mix ratio: curative per 100 parts resin | by weight | 35.2 | 29.3 | 26.7 | |
| Resin temperature | °C | 75 | 75 | 75 | |
| Curative temperature | °C | 40 | 40 | 40 | |
| Recommended roller temperature | °C | Room temperature | Room temperature | Room temperature | |
| Viscosity @ 100°C resin
(Viscosity vs. temp graphs available on request) |
cps | 800 | 800 | 800 | |
| Pot life (on a 500g mix) | seconds | 20 | 15 | 15 | |
| Recommended cure temperature / time | °C / hrs | Minimum 20 / 48 | Minimum 20 / 48 | Minimum 20 / 48 | |
| Hardness | DIN 2240-91 | Shore A | 85 | 90 | 95 |
| DIN 2240-91 | Shore D | - | - | - | |
| 100% modulus | BS 903 Pt A2 - ISO 37 | lb/in²
(Mpa) |
990
(6.8) |
1200
(8.3) |
1230
(8.5) |
| 300% modulus | BS 903 Pt A2 - ISO 37 | lb/in²
(Mpa) |
1480
(10.2) |
1800
(12.4) |
1850
(12.8) |
| Tensile strength | BS 903 Pt A2 - ISO 37 | lb/in²
(Mpa) |
7500
(51.8) |
7300
(50.4) |
7500
(51.8) |
| Elongation at break | BS 903 Pt A2 - ISO 37 | % | 550 | 550 | 500 |
| Tear strength | BS 903 Pt A3 - ISO 34-1 | lb/in
(KN/m) |
480
(84.0) |
500
(87.5) |
550
(96.3) |
| Specific gravity | g/cm³ | 1.23 | 1.24 | 1.26 | |
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.
