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Excellent optical clarity and UV stability for long-term outdoor performance.
High melt flow index enabling efficient extrusion and injection molding processing.
Good impact resistance combined with inherent rigidity and dimensional stability.
Low moisture absorption ensuring consistent processing and finished part integrity.
Compatible with standard acrylic solvents and suitable for solvent bonding and coating applications.
Automotive lighting lenses and bezels.
Outdoor signage and architectural glazing panels.
Medical device housings requiring transparency and sterilization compatibility.
Consumer electronics front covers and display windows.
Lighting diffusers and light guides for LED fixtures.
| Chemical Type | Polymethyl methacrylate (PMMA) |
| Product Form | Pellets |
| Appearance | Transparent, colorless granules |
| Melt Flow Index (230°C/3.8 kg) | 12–16 g/10 min |
| Density (23°C) | 1.18–1.20 g/cm³ |
| Transmittance (at 3 mm) | ≥92% |
| Notched Izod Impact (23°C) | 6–8 kJ/m² |
| Heat Deflection Temperature (0.45 MPa) | 102–106°C |
Q1: What is the primary function of PM788 in thermoplastic formulations?
A: PM788 serves as a high-molecular-weight thermoplastic acrylic resin primarily used to enhance melt flow, improve surface gloss, and provide thermal stability during extrusion or injection molding of engineering thermoplastics such as ABS, PC, and PC/ABS blends.
Q2: Is PM788 compatible with common polymer processing methods?
A: Yes — PM788 is specifically designed for conventional thermoplastic processing techniques including twin-screw extrusion, injection molding, and compounding. Its low melt viscosity and excellent thermal stability support consistent dispersion and minimal degradation under typical processing temperatures.
Q3: How does PM788 affect the mechanical properties of the final compound?
A: When incorporated at appropriate levels, PM788 generally maintains or slightly improves impact resistance and tensile strength while significantly enhancing surface aesthetics and dimensional stability. It does not act as a primary reinforcing agent but contributes to balanced property profiles in modified thermoplastics.
Q4: What are the recommended handling and storage conditions for PM788?
A: Store in original unopened packaging in a cool, dry place away from direct sunlight and sources of heat or ignition. Avoid prolonged exposure to high humidity, as moisture absorption may affect melt consistency during processing. Prior to use, verify material condition and consider gentle drying if ambient conditions suggest potential moisture uptake.
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E-mail: wangxingqiang@ericwchem.com
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