National High-tech Enterprise · Guangdong Hico New Materials
Light Diffusing Agent
Light Diffusing Agent
Spherical elastomer microspheres with stable haze, high transmittance, low addition amount, silicone heat resistance ≥300°C.
2 Series
Silicone + PMMA
6 Models
Selected Models
≥300°C
Silicone Heat Resistance
Free
Samples Available
Stable Haze
High Transmittance
Low Addition
Free Samples
KEY INDICATORS
Key Indicators
Key performance parameters of light diffusing agent
1.43~1.49
Refractive Index Range
Silicone 1.43 / PMMA 1.49
6 Models
Selected Models
Silicone 5 + PMMA 1
≥300°C
Silicone Heat Resistance
Far exceeds conventional diffusers
0.5~2.0%
Addition Range
Low addition · High effect
PRODUCT ADVANTAGES
Four Core Advantages
Stable Haze · High Transmittance · Heat Resistance · Low Addition
01
Stable Haze · High Brightness
Spherical elastomer microspheres are uniformly dispersed in plastic substrates, producing a stable scattering effect on light. Stable haze and high brightness ensure uniform and soft light output from LED fixtures, with no light spots.
02
Heat Resistance · ≥300°C
The silicone series offers heat resistance ≥300°C, far exceeding conventional light diffusers, meeting the high-temperature injection molding requirements of PC, PMMA and other materials. No yellowing or decomposition during processing and use, with stable long-term performance.
03
Low Addition · High Cost-Effectiveness
Only 0.5~2.0% addition is needed to achieve excellent light diffusion effects, far below the addition ratio of traditional inorganic light diffusers. This reduces the impact on the mechanical properties and transmittance of the substrate, delivering outstanding overall cost-effectiveness.
04
Waterproof · Lubricating · Easy Processing
Silicone resin microspheres offer excellent water resistance and lubrication properties. In plastic processing, they can improve flowability, reduce injection pressure, minimize mold wear, and enhance production efficiency and yield.
LIGHT DIFFUSER ADVANTAGES
Light Diffuser Core Advantages
Spherical Elastomer Microspheres · Refractive Index Difference Scattering · High Haze & High Transmittance
🔬 Light Diffusion Principle
Light diffusing agent is a silicone resin microsphere (or PMMA microsphere), with a microstructure of spherical elastomer. The microspheres are uniformly dispersed in plastic substrates, utilizing the refractive index difference with the substrate (silicone 1.43 / PMMA 1.49 vs PC 1.586) to scatter light, achieving high haze and high transmittance uniform light output.
Light Incidence
Light source directly passes through transparent substrate
Concentrated light · Glaring output
Concentrated light · Glaring output
→
Microsphere Scattering
Spherical microspheres refract and scatter light
Refractive index 1.43~1.49 · Uniform scattering
Refractive index 1.43~1.49 · Uniform scattering
→
Soft Light Output
Light uniformly dispersed · Soft output
High haze · High transmittance · No light spots
High haze · High transmittance · No light spots
Stable Haze · Uniform Output
Spherical microspheres scatter uniformly, stable haze without fluctuation
High Transmittance · High Brightness
Maintains high transmittance while achieving uniform light output
Low Addition · Cost-Effective
Only 0.5~2.0% needed, far below traditional inorganic fillers
Heat Resistance · No Yellowing
Silicone ≥300°C, no yellowing or decomposition during injection molding
Waterproof · Lubricating · Easy Processing
Improves flowability, reduces injection pressure and mold wear
PRODUCT TYPE
Two Series for Precise Selection
Organic Light Diffuser · PMMA Light Diffuser — Covering PC/PS/PMMA/PP Substrates
🔮 Light Diffusion Principle & Selection
Light diffusing agent is a silicone resin microsphere (or PMMA microsphere), with a microstructure of spherical elastomer. The microspheres are uniformly dispersed in plastic substrates, utilizing the refractive index difference between the spherical microspheres and the substrate (silicone 1.43 / PMMA 1.49 vs PC 1.586) to scatter light, achieving high haze and high transmittance uniform light output.
Organic Light Diffuser
Silicone Series
Refractive Index 1.43 · Heat Resistance ≥300°C · 5 Models
HY-OS015
HY-690A
HY-301
HY-501
HY-610
D50: 1.5~10μm
Refractive Index: 1.43
Heat Resistance: ≥300°C
Addition: 0.5~2.0%
PMMA Light Diffuser
PMMA Series
Refractive Index 1.49 · Heat Resistance ≥250°C · 1 Model
HY-PM04
D50: 4~4.5μm
Refractive Index: 1.49
Heat Resistance: ≥250°C
Density: 1.18 g/cm³
Selection Guide: For high-temperature injection molding applications (PC lampshades, light guide plates, etc.), the Silicone Series is recommended, with heat resistance ≥300°C ensuring processing stability. For conventional temperature applications, the PMMA Series can be selected, with a refractive index of 1.49 providing higher compatibility with PMMA substrates. Smaller D50 particle size yields higher haze and slightly lower transmittance, while larger particle size yields higher transmittance and slightly lower haze. Select based on your specific requirements.
TECHNICAL PARAMETERS
Technical Parameters
Full series parameters — Silicone 5 models + PMMA 1 model
📊 Organic Light Diffuser (Silicone Series)
| Model No. | D50 (μm) |
Hue | Refractive Index | Heat Resistance (°C) |
Density (g/cm³) |
Add Ratio (%) |
|---|---|---|---|---|---|---|
| HY-OS015 | 1.5-1.8 | Pure white, regular spherical powder | 1.43 | ≥300 | 1.3 | 0.5-2.0 |
| HY-690A | 1.7 | Pure white, regular spherical powder | 1.43 | ≥300 | 1.3 | 0.5-0.8 |
| HY-301 | 3.5 | Pure white, regular spherical powder | 1.43 | ≥300 | 1.3 | 0.5-0.8 |
| HY-501 | 5 | Pure white, regular spherical powder | 1.43 | ≥300 | 1.3 | 0.5-0.8 |
| HY-610 | 10 | Pure white, regular spherical powder | 1.43 | ≥300 | 1.3 | 0.5-0.8 |
📋 The silicone series has a refractive index of 1.43, heat resistance ≥300°C, and density of 1.3 g/cm³ for all models. HY-OS015 has the largest addition range (0.5~2.0%), and HY-610 has the coarsest particle size (D50=10μm), suitable for high transmittance and low haze applications. The specific product values are subject to the actual factory inspection report.
📊 PMMA Light Diffuser (PMMA Series)
| Model No. | D50 (μm) |
Refractive Index | Heat Resistance (°C) |
Density (g/cm³) |
Add Ratio (%) |
|---|---|---|---|---|---|
| HY-PM04 | 4-4.5 | 1.49 | ≥250 | 1.18 | 0.5-1.0 |
📋 The PMMA series has a refractive index of 1.49, close to that of PMMA substrate, providing higher compatibility. With a lighter density of 1.18 g/cm³ and heat resistance ≥250°C, it is suitable for PMMA light guide plates, lampshades, and other conventional temperature applications. The specific product values are subject to the actual factory inspection report.
PRODUCT INTRODUCTION
Product Introduction
Light Diffusing Agent · Spherical Elastomer Microspheres · High Haze & High Transmittance
Light diffusing agent is a silicone resin microsphere with a microstructure of spherical elastomer, mainly used in PC, PS, PMMA, PP and other plastics to achieve light diffusion effects. The spherical microspheres are uniformly dispersed in the substrate, utilizing the refractive index difference with the substrate to scatter light, achieving high haze and high transmittance uniform light output.
The silicone series offers excellent water resistance and superior heat resistance (high temperature resistance up to 300°C), along with excellent lubrication properties that can improve plastic processing flowability. The PMMA series has a refractive index of 1.49, providing higher compatibility with PMMA substrates, suitable for conventional temperature applications.
The core advantages of light diffusing agent are: stable haze, high brightness, high transmittance, and low addition amount. Only 0.5~2.0% addition is needed to achieve excellent light diffusion effects, far below traditional inorganic fillers, reducing the impact on substrate mechanical properties.
Stable Haze · Uniform Output
Spherical microspheres scatter uniformly, stable haze without fluctuation
High Transmittance · High Brightness
Maintains high transmittance while achieving uniform light output
Low Addition · Cost-Effective
Only 0.5~2.0% needed, far below traditional inorganic fillers
Heat Resistance · No Yellowing
Silicone ≥300°C, no yellowing or decomposition during injection molding
Excellent Water Resistance
Silicone resin microspheres with excellent water resistance
Lubricating · Easy Processing
Improves flowability, reduces injection pressure and mold wear
APPLICATION AREAS
Four Optical Applications
Covering LED lampshades, light guide plates, automotive lamps, electronic displays and other core applications
App 01
LED Lampshades
Adding light diffusing agent to PC and PS lampshades converts LED point light sources into soft, uniform surface light sources, eliminating light spots and glare. With stable haze and high transmittance, it is widely used in LED downlights, panel lights, bulb lights and other fixtures.
App 02
Light Guide Plates
Adding light diffusing agent to PMMA light guide plates utilizes microsphere refraction and scattering to uniformly output side-entry LED light, achieving high-brightness uniform light output for ultra-thin backlight modules. Widely used in advertising light boxes and ultra-thin lighting fixtures.
App 03
Automotive Lamps
Adding light diffusing agent to polycarbonate automotive lamp diffuser covers, the silicone series offers heat resistance ≥300°C, meeting high-temperature injection molding requirements. Stable haze ensures uniform light output while maintaining high transmittance and excellent weather resistance.
App 04
Electronic Displays
Adding light diffusing agent to LCD light guide plates and light diffuser plates can replace traditional inorganic diffuser plates. With low addition, high haze, and good transmittance, it enables thinner and lighter display backlight module designs.
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