Research progress in high⁃performance light diffusion materials

doi:10.19491/j.issn.1001-9278.2022.03.024

Abstract

Abstract:

Light diffusion materials are widely used in lighting， biological materials， clinical medicine， cosmetics， agriculture， and so on. This paper introduced the types and performance parameters of light diffusion materials and reviewed their research progress in recent years from the aspects of the principle of light diffusion and the improvement of diffusion properties through structural design. Finally， the existing problems in the light diffusion materials were summarized， and the possible development directions in the future were prospected.

Key words: light diffusion, microstructure, transmittance, haze

CLC Number:

TQ322.2

ZUO Zhigang, ZHOU Shuai, TIAN Tongjin, WANG Qiang, LI Rui, WEI Hao, WANG Guojun. Research progress in high⁃performance light diffusion materials[J]. China Plastics, 2022, 36(3): 157-166.

Figures/Tables 12

Fig.1. Schematic diagram of Rayleigh scattering and Mie scattering［8］

Fig.2. The scattering effect of OCA prepared by embedded core?shell particles at the interface due to the difference of refractive index［19］

Fig.3. Schematic diagram of light diffusion by microarray protrusion［23］

Fig.4. Schematic diagram of PDMS microlen preparation based on replication molding process［27］

Fig.5. Schematic diagram of microstructure and light diffusion effect of soda wollastonite［30］

Fig.6. Schematic diagram of light diffusion principle of hollow nano SiO2［34］

Fig.7. SEM photos of sunflower pollen microstructure［52］

Fig.8. Schematic diagram of light diffusion mechanism of composite microspheres［8］

Fig.9. Schematic diagram of equipment for measuring diffusion angle［54］

Fig.10. Coil to coil process suitable for mass production［55］

Fig.11. Schematic diagram of preparation process of MTNH［61］

材料类型	结构	透光率/%	雾度/%
表面浮雕型	粗糙微结构^［29］	90	78
	三维多孔薄膜^［9］	94	40
	微透镜^［10］	89	48.7
体积扩散型	Mg⁃Al微球/PET^［35］	81	86
	勃姆石/PC^［37］	81	86
	AgCl纳米棒/PET^［39］	93.6	88.6
	硅胶微球/PC^［46］	78.1	99.9
	PMMA/SiO₂/PC^［8］	94.6	84.2
	SAN/SiO₂/PC^［54］	77.03	104.41
	SiO₂/TiO₂/PMMA/丙烯酸树脂^［55］	87	81
复合型	有机硅微球/微透镜^［60］	96.9	75

Tab.1. Structure and diffusion properties of several light diffusion materials

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