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Synthesis of High Refractive Index Silicone LED Encapsulation with Ultra-High Hardness

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Abstract

At present, with the continuous improvement of LED manufacturing technology, more stringent requirements are put forward for its packaging materials. How to reduce the packaging cost and further improve its luminous efficiency and service life is a problem that many scientific researchers have been committed to solving. In this study, a series of high refractive index hydrogen-containing methyl-phenyl silicone resins with different hydrogen contents were synthesized. Next, the hydrogen-containing silicone resins reacted with vinyl-phenyl MQ silicone resin, to obtain phenyl silicone materials. The cured products showed high light transmittance (> 90% at 480 nm), ultra-high hardness(> 86 shore D), good thermal stability(T5% > 436 ℃) and moderate tensile strength. In addition, increasing the hydrogen content could enhance the cross-link density, thereby improving the hardness of silicone materials. Compared with common commercial silicone resins on the market, the prepared hydrogen-containing methyl-phenyl silicone resins has excellent competitiveness. It can work as a crosslinker for addition-curing in high-power LED encapsulation.

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Data Availability

All data generated or analyzed during this study are included in this published article.

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Acknowledgements

This project was supported by Guangdong Basic and Applied Basic Research Foundation

Funding

This work was supported by Guangdong Basic and Applied Basic Research Foundation under the grant No. 2021A1515010945.

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Authors and Affiliations

  1. School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510641, China

    Zhaoqun Pan, Yu Cheng & Zhun Zhang

Authors
  1. Zhaoqun Pan
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  2. Yu Cheng
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  3. Zhun Zhang
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Contributions

Zhaoqun Pan contributed to conception of the study; Yu Cheng performed the experiment; Zhaoqun Pan, Yu Cheng contributed significantly to analysis and manuscript preparation; Zhaoqun Pan, Yu Cheng performed the data analyses and wrote the manuscript; Yu Cheng and Zhun Zhang helped perform the analysis with constructive discussions.

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Correspondence to Zhaoqun Pan.

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Pan, Z., Cheng, Y. & Zhang, Z. Synthesis of High Refractive Index Silicone LED Encapsulation with Ultra-High Hardness. Silicon 14, 7863–7870 (2022). https://doi.org/10.1007/s12633-021-01541-2

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  • DOI: https://doi.org/10.1007/s12633-021-01541-2

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