Amodel® PPA
Amodel® PPA has been used in the Oil & Gas industry for over 20 years. The first downhole application using Amodel® PPA was developed for use in sucker rods. The main requirements for a thermoplastic rod guide include chemical resistance, temperature performance, dimensional stability, and wear/fatigue resistance.
Amodel® PPA was tested against PA 6,6 and PPS and demonstrated superior wear and practical toughness than PPS while providing the similar thermal performance. PPA outperforms PA 6,6 in chemical resistance, thermal performance, and dimensional stability.
Typical properties of Amodel® PPA:
- Thermal resistance, CUT up to 190°C
- Outstanding electrical properties
- Excellent chemical resistance to hot oil, hot brine, sour crude, CO2
- Abrasion resistance
- Corrosion resistance
- Dimensional stability
- Less moisture absorption relative to conventional polyamides
- Slower rate of moisture absorption
- Lower Coefficient of Linear Thermal Expansion (CLTE) than PA 6,6 especially below 130°C (266°F)
Time to tensile strength half-life after heat aging
(33% GF PPA vs. 33% GF PA 6,6)
| Reagent | Amodel® AS-1133 HS | PA 6,6 33% GF |
| Toluene | Excellent | Excellent |
| Oils | Excellent | Excellent |
| Methylene Chloride | Excellent | Excellent |
| Chloro-Fluoro Carbons | Excellent | Excellent |
| Methyl Ethyl Ketones | Excellent | Medium |
| Sodium Chloride | Excellent | Medium |
| Phenols | Poor | Poor |
| Sulfuric Acids (36%) | Excellent | Poor |
| Sodium Hydroxide (10%) | Excellent | Medium |
30 day immersion @ 23°C
