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Help CenterOptical Grade PMMA CM-205 Chimei Transparent Granules for Lamp Housing
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As a specialized plastics supplier, Shanghai Wenqin Plastics is committed to providing high-performance materials for demanding applications. Our Optical Grade PMMA CM-205 granules from Chimei represent a premium solution for manufacturers seeking exceptional clarity and durability in lighting components. This material is engineered specifically for lamp housings, diffusers, and covers where light transmission and long-term performance are critical. We understand that the quality of your raw material directly impacts the final product's appeal and functionality, which is why we source and supply only verified, high-grade polymers. Partnering with reputable manufacturers like Chimei ensures our clients receive consistent, reliable materials that meet stringent production requirements.
Choosing the right material for optical applications involves balancing several key factors. Our Chimei CM-205 PMMA granules are formulated to excel in this regard, offering a combination of properties that make them ideal for the lighting industry.
- Superior Optical Properties: The primary advantage of CM-205 is its outstanding light transmittance, exceeding 92% in typical applications. This ensures maximum brightness and efficiency from your light source, with minimal distortion or diffusion unless specifically designed.
- Enhanced Weathering Resistance: PMMA is inherently resistant to UV radiation, but the optical grade formulation provides added protection against yellowing and embrittlement caused by prolonged exposure to sunlight or artificial light sources. This is crucial for outdoor lighting fixtures and indoor fixtures with long operational hours.
- Excellent Mechanical Strength and Rigidity: Despite its transparency, this material offers good impact resistance and dimensional stability. It can withstand the thermal cycles associated with lighting without significant warping or cracking.
- Good Processability: The granules are designed for smooth processing through standard injection molding and extrusion equipment. They offer a wide processing window, good melt flow characteristics, and low mold deposit, contributing to higher production efficiency and lower defect rates.
- Surface Quality: PMMA is known for its excellent surface finish, which is maintained in the CM-205 grade. This results in lamp housings with a high-gloss, scratch-resistant surface that enhances the aesthetic appeal of the final lighting product.
To provide a clearer understanding of the material's capabilities, here are some typical technical specifications. Please note that specific values can vary based on processing conditions and part design.
| Property | Typical Value | Test Method / Unit |
| Light Transmittance | > 92% | ASTM D1003 |
| Haze | ASTM D1003 | |
| Melt Flow Rate (MFR) | Available upon request | g/10min (230°C/3.8kg) |
| Tensile Strength at Break | Approx. 70 MPa | ASTM D638 |
| Flexural Modulus | Approx. 3300 MPa | ASTM D790 |
| Heat Deflection Temperature (HDT) | Approx. 95 °C | ASTM D648 (1.8 MPa) |
The benefits of using this material translate directly into advantages for your business and end-users. For manufacturers, the consistent quality and good processability of CM-205 granules can lead to reduced cycle times, lower rejection rates, and smoother production runs. For lighting designers and brands, it enables the creation of products with brilliant, undistorted light output and a premium feel. For the end-user, lighting fixtures made with this material offer long-lasting clarity and durability, maintaining their appearance and performance over time, which is a key selling point in competitive markets.
Shanghai Wenqin Plastics operates with a firm commitment to quality and reliability, principles reflected in our adherence to recognized management standards. Our operations are supported by a framework that includes ISO 9001 for quality management and ISO 14000 for environmental management, ensuring systematic control over our supply chain and material handling. We serve a diverse global clientele across North America, Europe, Asia, and other regions, with efficient logistics through major ports like Shanghai and Ningbo. This global reach, combined with our focus on technical plastics, makes us a dependable partner for your material needs. When you choose our Optical Grade PMMA CM-205, you are not just buying granules; you are investing in a material solution backed by a supplier dedicated to supporting your production success. Contact us today to discuss your specific requirements, request samples, or place an order. Let us help you illuminate your next project with clarity and quality.
Frequently Asked Questions (FAQ)
Q1: What is the main difference between general-purpose PMMA and this Optical Grade CM-205?
A1: Optical Grade PMMA, like CM-205, is specifically formulated and processed to achieve superior optical properties, particularly very high light transmittance (>92%) and very low haze (
Q2: Is this material suitable for outdoor lighting fixtures?
A2: Yes, PMMA has inherent good UV resistance. The CM-205 grade offers enhanced weathering resistance, making it a common choice for outdoor lamp housings, street light covers, and garden lights where resistance to yellowing from sunlight is important.
Q3: What are the recommended processing conditions for injection molding with CM-205?
A3: Typical melt temperatures range from 220°C to 260°C, with mold temperatures between 60°C and 80°C recommended for optimal surface finish and dimensional stability. Drying the granules before processing (e.g., at 80-90°C for 2-4 hours) is crucial to prevent defects like bubbles or splay marks.
Q4: Can this material be tinted or colored?
A4: While CM-205 is supplied in a water-clear transparent form, it can be colored using compatible PMMA masterbatches. However, adding colorants will reduce the light transmittance. For applications requiring colored transparent or translucent parts, it is advisable to test with your specific colorant and concentration.
Q5: How does the heat resistance of PMMA compare to polycarbonate (PC) for lamp housings?
A5: Polycarbonate generally has a higher heat deflection temperature (HDT) than PMMA. PMMA (like CM-205 with an HDT around 95°C) is suitable for many standard lighting applications, including those with LEDs and CFLs. For fixtures housing very high-temperature light sources (like some high-wattage halogens), the specific thermal requirements should be evaluated.
Q6: What is the typical packaging and lead time for this product?
A6: The material is typically packaged in 25 kg bags on pallets. Lead times depend on order quantity and stock availability. We maintain strategic inventory levels to serve our global markets efficiently from our base in Shanghai.
Q7: Are technical data sheets (TDS) and material safety data sheets (MSDS) available?
A7: Yes, comprehensive Technical Data Sheets (TDS) and Material Safety Data Sheets (MSDS) for Chimei CM-205 PMMA are available upon request. These documents provide detailed property data and safe handling guidelines.
Q8: Do you offer samples for testing and evaluation?
A8: Yes, we can typically provide small samples of the CM-205 granules for your process and product evaluation. Please contact our sales team with your company details and intended application to arrange a sample.
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