Formosa TAIRIREX® MP6500
High Impact Polystyrene (HIPS)
Medium-impact grade HIPS designed for ease of processing in injection molding applications, offering balanced mechanical properties and excellent processability
General Description
TAIRIREX® MP6500 is a medium-impact grade of High Impact Polystyrene (HIPS) manufactured by Formosa Chemicals & Fibre Corporation. This material is designed for ease of processing, particularly in injection molding applications. It offers a balance of mechanical properties and processability, making it a versatile choice for a wide range of consumer and industrial products. TAIRIREX® MP6500 is characterized by its natural milky off-white color, good dimensional stability, and compliance with several environmental and safety standards.
Key Features
Medium Impact Strength
Provides good toughness suitable for applications requiring durability beyond General Purpose Polystyrene (GPPS).
Ease of Processing
Exhibits stable melt flow characteristics, making it well-suited for high-speed injection molding.
Good Dimensional Stability
Finished parts maintain their shape and size under normal operating conditions.
Regulatory Compliance
Meets RoHS requirements (2002/95/EC and 2003/11/EC), SGS certified, and UL listed.
Versatility
Can be used in various applications, from consumer goods to electrical appliance components.
Typical Properties
The following table outlines the typical physical, mechanical, and thermal properties of TAIRIREX® MP6500. These values are intended for reference and design purposes only and should not be used as a basis for specifications.
| Property | Test Method (ASTM) | Value (Metric) | Value (Imperial) |
|---|---|---|---|
| Physical | |||
| Density | D792 | 1.04 g/cm³ | 0.0376 lb/in³ |
| Melt Mass-Flow Rate (MFR) | D1238 | 6.7 g/10 min (200°C/5.0 kg) | 6.7 g/10 min (392°F/11.0 lb) |
| Mechanical | |||
| Tensile Modulus | D638 | 2354 MPa | 341,400 psi |
| Tensile Strength at Break | D638 | 28.5 MPa | 4134 psi |
| Flexural Modulus | D790 | 2453 MPa | 355,800 psi |
| Flexural Strength | D790 | 55 MPa | 7977 psi |
| Notched Izod Impact | D256 | 78.5 J/m | 1.47 ft·lbf/in |
| Thermal | |||
| Vicat Softening Temperature | D1525 | 100 °C (Annealed) | 212 °F (Annealed) |
| Heat Deflection Temperature (HDT) | D648 | 91 °C at 1.8 MPa (Annealed) | 196 °F at 264 psi (Annealed) |
| Flammability | |||
| UL 94 Flammability Rating | UL 94 | HB (at 1.5 mm thickness) | HB (at 0.059 in thickness) |
Processing Recommendations
TAIRIREX® MP6500 is primarily processed through injection molding. The following are general processing guidelines and may require optimization depending on the specific equipment, part design, and mold complexity.
Pre-Drying Requirements
While HIPS has low moisture absorption, drying is recommended to ensure optimal part aesthetics and mechanical properties.
Injection Molding Parameters
Zone Temperature Profile (Typical)
Zone 1 (Rear)
180 °C
(356 °F)
Zone 2
195 °C
(383 °F)
Zone 3
205 °C
(401 °F)
Zone 4 (Front)
200 °C
(392 °F)
Typical Applications
The balanced properties of TAIRIREX® MP6500 make it suitable for a diverse set of applications, including but not limited to:
Consumer Goods
- • Toys
- • Stationery
- • Clothing hangers
Electrical Appliances
- • Clock housings
- • Small appliances
- • Electronic parts
Industrial
- • Blending with FRP
- • (Fiber Reinforced Plastics)
Safety and Handling
TAIRIREX® MP6500 is a non-hazardous solid material under normal handling conditions. However, it is important to follow standard safety practices when processing this material. Molten polymer can cause severe thermal burns. Processing areas should be well-ventilated to remove any fumes that may be generated at elevated temperatures. For detailed safety information, please refer to the Safety Data Sheet (SDS) for this product.
Storage
Store TAIRIREX® MP6500 in a cool, dry place away from direct sunlight and sources of heat. The packaging should be kept sealed to prevent contamination and moisture absorption.
Disclaimer
The information provided in this document is based on typical values and is intended for guidance purposes only. It is the responsibility of the user to determine the suitability of this material for their specific application through appropriate testing. Formosa Chemicals & Fibre Corporation makes no warranties, express or implied, and assumes no liability in connection with any use of this information.