This injection grade transparent PMMA resin (Polymethyl Methacrylate) features high optical clarity, excellent weather resistance, and surface hardness. Designed for precision molding, it provides stable thermal properties and high light transmission. Available in standard packaging with accessible Technical Data Sheets (TDS).
| Form | Granules |
|---|---|
| MFR | 12-15 g/10min |
| Light Transmittance | 92 % |
| HDT | 90-95 °C |
Note: See the product description for additional technical specifications
Transparent PMMA Granules (Polymethyl Methacrylate), commonly known as Acrylic or Plexiglass, is a thermoplastic engineering plastic characterized by extreme optical clarity and exceptional weather resistance. This Injection Grade PMMA is specifically engineered for industrial applications requiring high precision, dimensional stability, and superior optical performance.
As a professional resin material plastic wholesaler in china, ZiJun Plastics supplies PMMA raw materials that feature excellent surface hardness and UV resistance, making them the ideal lightweight alternative to glass.
Key Selling Points:
High Light Transmittance: Offers a transparency rate of over 92%, providing crystal-clear purity.
Superior Surface Hardness: Boasts the best scratch resistance among transparent plastics.
Excellent Processing Flow: Optimized for injection molding to fill complex and intricate mold cavities efficiently.
To ensure consistent performance during production, we provide precise physical parameters measured under standard laboratory conditions.
| Properties | Typical Value | Test Standards | Test Conditions |
| Melt Flow Rate (MFR) | 12 – 15 g/10min | ISO 1133 | 230°C / 3.8kg |
| Light Transmittance | 92 % | ASTM D1003 | 3.2mm thickness |
| Refractive Index | 1.49 | ISO 489 | 23°C |
| Tensile Strength | 70 MPa | ISO 527 | 5mm/min |
| Rockwell Hardness | 95 | ISO 2039-2 | M scale |
| Heat Deflection Temp (HDT) | 90 – 95 °C | ISO 75 | 1.8 MPa |
Injection Grade PMMA is widely used in high-standard industries due to its perfect balance of optical properties and mechanical strength:
Nail Art & Beauty Industry:
Nail Tips: High transparency and toughness allow for the production of premium wearable nails that are vibrant and resistant to snapping.
Cosmetic Packaging: Ideal for manufacturing perfume bottle caps and cream jars that require a heavy, glass-like feel with crystal clarity.
Automotive Lighting:
Tail Light Lenses & Dashboards: Excellent weatherability ensures parts do not yellow or degrade over long-term exposure.
Optical Instruments:
Lenses & Light Guides: Suitable for LED lenses and display components requiring precise light refraction control.
Understanding the differences between PMMA and other materials helps in optimizing both cost and performance:
| Dimension | PMMA (Acrylic) | PC (Polycarbonate) | PS (Polystyrene) |
| Transparency | Highest (92%) | High (89%) | Fair (88%) |
| Scratch Resistance | Excellent | Poor (Easily scratched) | Fair |
| Impact Strength | Medium | Extreme | Brittle |
| Weatherability | Superior (No yellowing) | Fair | Prone to yellowing |
| Cost | Medium | Higher | Lower |
To achieve a mirror-like transparent finish, it is recommended to strictly follow these injection parameters:
Drying: PMMA is hygroscopic. It must be dried at 80°C – 90°C for 3 – 4 hours before processing to prevent bubbles or silver streaks (crazing).
Injection Temp: Recommended range is 200°C – 230°C. Avoid long residence times at high temperatures to prevent material degradation or discoloration.
Mold Temp: Maintain between 40°C – 80°C. Higher mold temperatures enhance surface gloss and reduce internal stress.
Note: PMMA is relatively brittle; ensure an adequate draft angle in mold design and avoid strong release agents that might cloud the optical clarity.
Q1: Why do my PMMA molded parts have a cloudy or foggy appearance?
A: This is usually caused by incomplete drying or low mold temperatures. Ensure sufficient drying time and slightly increase the mold temperature to improve the fusion of the melt.
Q2: Can these PMMA granules be used directly for manufacturing nail art products?
A: Yes. Our injection grade PMMA offers excellent biocompatibility tendencies and extreme clarity, making it perfect for high-end nail tips. It blends perfectly with color pigments for a translucent, vibrant finish.
Q3: Do you provide technical support and bulk wholesale pricing?
A: Absolutely. As a leading resin material plastic wholesaler in china, we provide competitive wholesale rates and professional technical guidance regarding mold design and formulation.
