Modified Polyphenylene Oxide (m-PPO or MPPO) refers to engineering plastic alloys/composite materials produced by blending pure PPO resin with polymers such as polystyrene (HIPS), polyamide (PA), polyphenylene sulfide (PPS), or by reinforcing with glass fiber, carbon fiber, mineral fillers, etc.  Modified PPO retains the excellent heat resistance, electrical insulation, and dimensional stability of PPO while significantly improving processing flowability, and can be customized for mechanical strength, chemical resistance, and flame retardancy grades according to application requirements.

Modified Polyphenylene Oxide (m-PPO or MPPO) refers to engineering plastic alloys/composite materials produced by blending pure PPO resin with polymers such as polystyrene (HIPS), polyamide (PA), polyphenylene sulfide (PPS), or by reinforcing with glass fiber, carbon fiber, mineral fillers, etc.  Modified PPO retains the excellent heat resistance, electrical insulation, and dimensional stability of PPO while significantly improving processing flowability, and can be customized for mechanical strength, chemical resistance, and flame retardancy grades according to application requirements. 

 

Basic Parameters

 

Features:

• Broadly tunable performance spectrum: By adjusting the PPO/HIPS ratio and the type/content of reinforcing fillers, mechanical strength, heat resistance grade, and processing flowability can be customized across a wide range to meet differentiated requirements of various application scenarios.

• Excellent processability: Compared to pure PPO, m-PPO melt flowability is substantially improved, enabling processing by conventional thermoplastic methods such as injection molding, extrusion, and blow molding, with low mold shrinkage (0.5%–0.7%) and high dimensional accuracy.

• Good mechanical properties: Unfilled grade tensile strength 47–70 MPa, glass-fiber-reinforced grades up to 90–140 MPa; flexural modulus from 2.1 GPa (unfilled) to 8.6 GPa (40% GF), covering a broad spectrum of rigidity and toughness.

• Excellent electrical insulation: Dielectric constant (Dk) 2.7–4.4, dissipation factor (Df) 0.001–0.002, volume resistivity up to 10¹⁵–10¹⁷ Ω·cm, remaining stable across wide temperature and humidity ranges.

• Outstanding adjustable heat resistance: Heat deflection temperature (HDT) can be designed from 77°C to 238°C as needed; PPO/PPS alloy with glass fiber can achieve HDT exceeding 250°C.

• Ultra-low moisture absorption and excellent dimensional stability: 24-hour water absorption 0.06%–0.07%; parts exhibit virtually no dimensional change in humid environments.

• Inherent flame retardancy with upgrade capability: Base grade LOI 29%–35%, minimal flame retardant addition achieves UL94 V-0 rating, meeting stringent safety specifications of the electronics and electrical industry.

 

Application:

(1) Electronics & Electrical :

• TV/monitor/computer housings, internal brackets, and insulation components;

• Electronic connectors, relay housings, coil bobbins, circuit breaker assemblies;

• Precision internal structural parts for copiers/printers/fax machines;

• 5G base station equipment housings and radomes;

• Various charger/adapter housings .

(2) Automotive Industry :

• Interior parts: instrument panel frames, center consoles, speaker grilles, door handles;

• Exterior parts: high-end vehicle bumpers, radiator grilles, large spoilers;

• Under-hood: air intake manifolds, radiator end tanks, sensor housings ;

• New Energy Vehicles: battery pack brackets and insulation, motor controller housings, high-voltage connectors.

(3) Photovoltaic & New Energy:

• PV connectors , PV junction boxes;

• PV inverter housings and internal insulation components;

• PV module frames and support structures;

• Wind power insulation components.

(4) Mechanical Industry & Precision Parts :

• High-precision gears, cams, bearing cages;

• Water pump impellers, blower blades, valve components;

• Various industrial pump bodies and pipe fittings.

(5) Medical & Consumer:

• Medical device housings and sterilization equipment ;

• Surgical instrument handles and disposable tools;

• Kitchenware handles, cleaning appliance housings;

• High-end office equipment and sports goods.