Light Diffusion Polycarbonate

Illuminated front brand emblems and magnetic-levitation wheel logos have become iconic styling features across new energy vehicles (NEVs) and modern internal combustion engine (ICE) models. However, housing these embedded LED point light sources presents severe optical and material challenges. Unmodified optics often suffer from localized glare spots, uneven brightness, low heat resistance, and yellowing from outdoor UV exposure.

To solve these manufacturing bottlenecks, Qingdao Zhongxin Huamei Plastic Co., Ltd. offers specialized optical-gradelight diffusion Polycarbonate (PC) resin engineered specifically for illuminated automotive emblem lenses and outer housings.

Key Optical, Thermal & Structural Advantages for Auto Emblems

Our specialized light diffusion PC material transforms harsh LED point sources into smooth, premium surface illumination while offering robust exterior protection:

[Harsh LED Point Source] ➔ [Uniform Diffusion Particles in PC Matrix] ➔ [Smooth Surface Glow (99% Haze)] ➔ [Zero Hotspots / Glare]

• Balanced Transmittance (70%–90%) & High Haze (up to 99%): At a standard 2.0 mm wall thickness, the material delivers a tuned 70%–90% light transmittance combined with up to 99% light diffusion haze. Internally dispersed diffuser particles scatter LED point lights into a soft, uniform area light, completely eliminating glare spots and enhancing emblem visual depth across vehicle unlock, driving, and charging modes.

• High Thermal Resistance (125°C HDT): Inheriting superior PC thermal properties, the compound achieves a heat deflection temperature (HDT) of 125°C. It easily withstands continuous heat conducted from engines, brake systems, and high-power LEDs without warping or softening.

• Stone-Chip Impact Strength & Dimensional Stability: High impact resistance shields emblem covers against flying road gravel and debris. A stable 0.4%–0.6% molding shrinkage rate accommodates complex curved and thin-walled emblem geometry, increasing finished component yields by approximately 5% compared to general optical plastics.

• Outdoor Weatherability & Flame Retardancy: Formulated for harsh outdoor service, the material resists solar UV degradation, surface hazing, and yellowing. It complies with RoHS environmental standards and meets the UL94 V2 flame retardancy rating.

Technical Specification Overview: Light Diffusion PC for Auto Emblems

 Partner with a Certified Source Compounding Factory

Selecting unverified light diffusion suppliers can lead to light leakage, batch-to-batch color shifts, and cracking under outdoor thermal stress. Qingdao Zhongxin Huamei Plastic Co., Ltd. is an established, 30-year modified engineering plastics compounding enterprise operated as an official joint venture with CHIMEI. As a certified National High-Tech Enterprise, we specialize in custom compounding, precision light diffusion parameter tuning, and full physical verification.

Equipped with a 45,000 m² standardized manufacturing facility and 30 automated compounding lines, we maintain an annual capacity of 50,000 tons. We offer specialized Light Diffusion PC, Light Diffusion PS, and Light Diffusion PMMA series tailored to exact OEM lighting specifications, serving as a one-stop source factory for auto component manufacturers worldwide.

Request a Technical Datasheet & Custom Optical Sample Batch

• Direct Compounding Source: Qingdao Zhongxin Huamei Plastic Co., Ltd.

• Global Hotline Support & WhatsApp: +8618765279757 (WeChat Available)

• Official Corporate Email: info@qdzxhm.com.cn

• Approved Commercial Shipping Terms: FOB / EXW Direct Factory Dispatched Only

• Custom Sourcing Services: Custom Transmittance & Haze Tuning (70%–90%), UV Aging Packages, Custom Emblem Color Tinting, High-Flow Grades for Multi-Cavity Thin-Wall Molds.