高折光LED灌封胶用交联剂的制备及性能表征

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In this paper,a crosslinker for high refractive index LED encapsulant was prepared by diphenylsilanediol（DPSD）,2,4,6,8-Tetramethylcyclotetrasiloxane（D H 4） and 1,1,3,3-Tetramethyldisiloxane（HMM） under a 70% sulfuric acid catalyst.This research found the relationship between reaction temperature, reaction time and performance of the crosslinker.Results showed that a phenyl-hydrogen-oligosiloxane with 0.6% hydrogen content was obtained in high yield when reaction under 60℃ for 5h.The obtained phenyl-hydrogen-obligosiloxane showed a good thermal stability and application performance.以二苯基硅二醇（DPSD）、四甲基环四硅氧烷（DH4）和含氢双封头（HMM）为原料,70浓硫酸为催化剂,制备高折光LED灌封胶用液体交联剂,探讨了反应温度和反应时间对交联剂性能的影响。结果表明,在反应温度为60℃,反应时间为5h的条件下,可获得较高折射率和收率的苯基氢基聚硅氧烷,含氢量约为0.6,具有较优的热稳定性和应用性能。