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中南大学学报(自然科学版)

Journal of Central South University

第49卷    第9期    总第289期    2018年9月

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文章编号:1672-7207(2018)09-2137-06
大功率LED封装用苯基乙烯基硅油的制备及白炭黑的补强研究
吴海鹰,戴子林,朱淮军,黄建平,杨锐

(广东省稀有金属研究所,广东 广州,510651)

摘 要: 以二甲基硅油、八苯基环四硅氧烷、四甲基二乙烯基二硅氧烷为原料,利用阴离子开环共聚反应制备不同性能的苯基乙烯基硅油并进行表征;以白炭黑为补强材料,考察白炭黑及加入量对基础胶捏合后的黏度及所得加成型硅橡胶性能的影响。研究结果表明:当合成硅油折射率为1.46时,制备的改性白炭黑硅橡胶达到光学透明;改性白炭黑质量分数为15%的加成型苯基硅橡胶在固化前流动性好,在可见光波长400~800 nm范围内的透光率达92%以上,拉伸强度达5.6 MPa以上,邵尔硬度达60,可见白炭黑补强加成型苯基乙烯硅胶适用于大功率LED封装。

 

关键词: LED封装;苯基乙烯基硅油;加成型硅橡胶;白炭黑;补强

Preparation of phenyl vinyl silicone oil for high power LED package and strengthening of white carbon
WU Haiying, DAI Zilin, ZHU Huaijun, HUAN Jianping, YANG Rui

Guangdong Research Institute of Rare Metals, Guangzhou 510651, China

Abstract:Phenyl vinyl silicone oil was prepared by anionic ring-opening copolymerization reaction using dimethicone, octaphenylcyclotetrasiloxane and divinyl tetramethyl disiloxane, and its properties were characterized. The effect of amount of modified silica on the viscosity of the base rubber and the properties of the resultant silicone rubber were investigated using silica as a reinforcing material. The results show that the modified silica rubber is optically transparent when the refractive index of synthetic silicone oil is 1.46; the modified phenyl silicone rubber with modified white carbon mass fraction of 15% has good flowability before solidification; the transmittance under 400-800 nm wavelength is over 92%; the tensile strength is more than 5.6 MPa, and the Shore hardness is 60. Therefore, the prepared phenyl vinyl silicone oil is suitable for LED encapsulation.

 

Key words: LED package; phenyl vinyl silicone oil; additional silicone rubber; white carbon; strengthening

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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