m-PPE Modified Polyphenylene Ether Properties — Complete Engineering Data Sheet (2026)
Tensile data verified against MatWeb.com database & manufacturer datasheets · Last updated July 2026
Published: 2026-06-10
Modified Polyphenylene Ether (m-PPE), also known as modified PPO, is an amorphous engineering thermoplastic blend that combines PPE's exceptional heat resistance and hydrolytic stability with polystyrene's processability. Originally developed by...
Modified Polyphenylene Ether (m-PPE), also known as modified PPO, is an amorphous engineering thermoplastic blend that combines PPE's exceptional heat resistance and hydrolytic stability with polystyrene's processability. Originally developed by GE Plastics as Noryl, it has been extensively engineered by Japanese chemical companies — Asahi Kasei's Xyron and Mitsubishi Engineering-Plastics' Iupiace are the leading Japanese grades.
m-PPE's standout property is its near-zero moisture absorption (<0.1%) combined with outstanding hydrolysis resistance — making it the material of choice for hot-water-contact components like pump housings, water meter bodies, and dishwasher spray arms. Unlike PA66 which swells and loses strength in water, m-PPE maintains its mechanical properties and dimensional stability indefinitely in aqueous environments, even at elevated temperatures.
In Japan, m-PPE is heavily specified for automotive under-hood electrical connectors, EV battery pack components, and solar power junction boxes — applications where hydrolytic stability and electrical insulation are simultaneously required. Its low specific gravity (1.06) provides weight savings versus filled nylons in EV applications.
Processing: Melt temperature 260-300 °C, mold temperature 80-100 °C. Pre-drying at 90-100 °C for 2-3 hours is recommended. m-PPE has relatively high melt viscosity; medium-to-high injection speeds with adequate venting are recommended to prevent gas burns. Glass-fiber reinforced grades (GF20, GF30) are available for structural applications requiring higher stiffness and HDT.
Recommended Applications
m-PPE Modified Polyphenylene Ether is commonly specified for:
Technical Properties
| Density | 1.06 g/cm³ |
|---|---|
| Tensile Strength | 55 MPa |
| Melting Point | N/A (Amorphous, Tg 140-210 °C depending on blend) |
| Shrinkage Rate | 0.5-0.7% |
| Flexural Modulus | 2.5 GPa |
| Hdt | 135 °C at 1.82 MPa |
| Water Absorption | 0.07% (24h, 23 °C) |
| Dielectric Strength | 25 kV/mm |
Engineering Tool: Shrinkage & Cost Estimator
Calculate part weight, mold cavity dimensions accounting for shrinkage, and material cost — all locally in your browser.
Equivalents & Cross-References
| Equivalent / Alternate | Action |
|---|---|
| Asahi Kasei Xyron | |
| SABIC Noryl | |
| Mitsubishi Engineering-Plastics Iupiace | |
| Sumitomo Bakelite SUMIPLOY |
Frequently Asked Questions
When should I choose m-PPE over PA66 for water-contact applications?
Choose m-PPE when the component will be continuously exposed to water, coolant, or high humidity at elevated temperatures. PA66 absorbs 2-8% moisture with significant dimensional change and strength loss; m-PPE absorbs <0.1% with negligible property change. For hot-water plumbing fittings, pump housings, and EV cooling system components, m-PPE is the default choice.
What are the key Japanese m-PPE grades?
Asahi Kasei Xyron is the Japanese market leader, with grades spanning general-purpose (100Z), glass-reinforced (200Z/300Z), and flame-retardant (V-series). Mitsubishi Engineering-Plastics Iupiace offers ultra-low-warpage grades for precision electronic connectors. SABIC Noryl remains the global benchmark and is widely available through Japanese distributors.
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References & Industry Standards
- ASTM International. Standard Specifications for Engineering Plastics & Thermoplastics. astm.org
- UL Prospector. Plastics & Elastomers Material Database. ulprospector.com
- MatWeb. Material Property Data for Engineering Thermoplastics. matweb.com
- ISO 1043. Plastics — Symbols and Abbreviated Terms. iso.org