MECHETEC PPO
MECHETEC® PPO (blend of polyphenylene oxide and styrene) is an amorphous thermoplastic that offers a superior blend of physical strength, flame resistance, and outstanding electrical properties. Unlike many amorphous materials that tend to steadily lose strength as temperatures increase, MECHETEC® PPO maintains its high stiffness to temperatures in excess of 200°F. In addition, it’s low moisture absorption and low coefficient of thermal expansion contribute to it being one of the most dimensionally stable materials available. MECHETEC® PPO has an excellent V-0 UL-94 flame rating at thicknesses of 0.24" and over. For applications that require improved strength and stiffness, 30% glass fiber filled is available. Formally known as Uninor PPO.
Properties
- Physical Form
- Rods, Sheets
- Rods
- Sheets
Product families
- Connectors
- Housings & Enclosures
- Aerospace & Aviation
Other characteristics
- Brand
- MECHETEC
- Density
- 1080.0 - 1080.0 kg/m³
- Features
Dimensional Stability, Flame Resistant, Good Thermal Stability, High Dielectric Strength, Low Moisture Absorption
- Polymer Name
- PPO/PS Alloy
- Tensile Modulus
- 2551.05 - 2551.05 MPa
- Markets
- Automotive & Transportation
- Electrical & Electronics
- Flame Rating
- UL 94 V0
- Key Features
- 230 ° F Continuous Use Temperature.
- Excellent Dimensional Stability.
- Low Moisture Absorption.
- High Dielectric Strength.
- Flame Resistant.
- Technology
- Plastics
- Product Families
- Plastics — Parts, Shapes & Films
- Material Features
- Dimensional Stability
- Flame Resistant
- Good Thermal Stability
- High Dielectric Strength
- Low Moisture Absorption
- Recommended Applications
- Manifolds.
- Electrical Insulators.
- Electrical Connectors.
- Aircraft Instrumentation.
- Business Equipment Housings.
- Certifications and Compliance
- UL 94
- Plastics and Elastomers End Uses
- Automotive Instrument Panel
- Electrical Connectors
- Electrical Insulation
- Housings
- Plastics and Elastomers Processing Methods
- Extrusion
Technical data
Table 1 of 4
8 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Specific Gravity | 1.08 | — | ASTM-D792 |
| Tensile Strength | 9200 | psi | ASTM-D438 |
| Tensile Elongation | 25 | % | ASTM-D638 |
| Tensile Modulus of Elasticity | 370000 | psi | ASTM-D638 |
| Flexural Strength | 14400 | psi | ASTM-D790 |
| Flexural Modulus of Elasticity | 370000 | psi | ASTM-D790 |
| Izod Notched Impact | 3.5 | Ft.-lb./in. | ASTM-D256 |
| Rockwell Hardness | 119 | Scale R | ASTM-D785 |
Table 2 of 4
3 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Coef. Of Linear Thermal Expansion | 2.3 x 10 ^5 | in/in/°F | ASTM-D696 |
| Continuous Use Temp. | max. 230 | °F | Internal Std. |
| Heat Deflection Temp. at 264 psi | 254 | °F | ASTM-D648 |
Table 3 of 4
4 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Dielectric Constant at 60 Hz | 2.7 | — | ASTM-D150 |
| Dielectric Strength-Short Term | 500 | volts/mil | ASTM-D149 |
| Dissipation Factor at 60 Hz | 0.0007 | — | ASTM-D150 |
| Volume Resistivity | 10^15 | ohm-cm | ASTM-D257 |
Table 4 of 4
2 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Water Absorption/24 hrs. | 0.07 | %weight | ASTM-D570 |
| Flammability | V-0 (0.24") | — | UL-94 |
