pp 1–11 | Cite as

Synthesis of High Refractive Index Epoxy Modified Methyl Phenyl Silicone Resin and Amine Phenyl Silicone Resin for LEDs Packaging

  • Zhaoqun PanEmail author
  • Shuangli Zhu
  • Liqiang Zhu
  • Yingzi Kang
  • Bingsheng Huang
Original Paper


A series of epoxy modified methyl phenyl silicone resins with different epoxy values were prepared by an approach of combination of hydrolytic sol-gel and non-hydrolytic sol-gel process. Then, in order to solve poor compatibility between epoxy modified silicone resins and commercial amine curing agents, amine phenyl silicone resin curing agent was synthesized by non-hydrolytic sol-gel method. The test results exhibited that the process of combination of hydrolytic sol-gel and non-hydrolytic sol-gel process had a significant effect on the elimination of hydroxyl groups. A lot of experiments and mechanism analysis exhibited that the activity and content of hydroxyl groups are two important factors for ring-opening of epoxy groups and gelation of product. So, epoxy groups can be stably and efficiently introduced in the terminal of product in the course of non-hydrolytic sol-gel process, which hugely avoided ring-opening of epoxy groups. Subsequently, epoxy modified silicone materials were obtained by thermal curing reaction between epoxy modified silicone resins with different epoxy values and amine phenyl silicone resin. And the curing reaction can be completed at 80 °C for 2 h. Transmittance of light, thermogravimetric (TG) analysis, differential scanning calorimetry (DSC) and reliability test were used to analyze performance of epoxy modified silicone materials. The results exhibited that prepared silicone materials had a high transmittance (>90%), strong adhesive strength, good thermal stability and mechanical performance. Therefore, epoxy modified silicone material can be applied in high-power LEDs packaging.


Hydrolytic sol-gel Non-hydrolytic sol-gel Epoxy modified methyl phenyl silicone resin Amine phenyl silicone resin curing agent Epoxy modified silicone materials LEDs packaging 


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This project was supported by Department of education’s Production-Study-Research combined innovation Funding -- “Blue fire plan (Huizhou)”.

Compliance with Ethical Standards

Conflict of Interest

The authors declare that they have no conflict of interest.


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Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  • Zhaoqun Pan
    • 1
    Email author
  • Shuangli Zhu
    • 1
  • Liqiang Zhu
    • 1
  • Yingzi Kang
    • 2
  • Bingsheng Huang
    • 1
  1. 1.School of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhouPeople’s Republic of China
  2. 2.School of Mechanical & Automotive EngineeringSouth China University of TechnologyGuangzhouChina

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