引用本文:
徐国财, 马家举, 邢宏龙, 胡乃明. 原位分散紫外光固化SiO2纳米复合材料的性质[J]. 应用化学,
2000, 17(4): 450-452.
Citation: XU Guo-Cai, MA Jia-Ju, XING Hong-Long, HU Nai-Ming. Properties of Silica/polymer Nanocomposites Prepared via in situ Ultraviolet Curing in Dispersion[J]. Chinese Journal of Applied Chemistry, 2000, 17(4): 450-452.
Citation: XU Guo-Cai, MA Jia-Ju, XING Hong-Long, HU Nai-Ming. Properties of Silica/polymer Nanocomposites Prepared via in situ Ultraviolet Curing in Dispersion[J]. Chinese Journal of Applied Chemistry, 2000, 17(4): 450-452.
原位分散紫外光固化SiO2纳米复合材料的性质
English
Properties of Silica/polymer Nanocomposites Prepared via in situ Ultraviolet Curing in Dispersion
Abstract:
The silica/polymer nanocomposites were obtained via in situ ultraviolet light irra diation of the dispersion system containing epoxylacrylate, aminoacrylate, 1,6-hexanediol diacry late, sensitizer 1173 and 20 nm silica particles. The results showed that the hardness, tensile strength and modulus of the nanocomposites were increased with increasing silica content. The silica nanocomposite with 2.5%(wt) of silica had pencil hardness of grade 6, tensile strength of 50 MPa and modulus of 1640 MPa. The initial thermal decomposition temperature of the nanocomposite was increased considerably at <400 K and decreased at >600 K. The thermal decomposition loss was 83.4% at near 800 K. The nanocomposites showed a strong ultraviolet absorbency in region of 200~400 nm and the absorbency at 400~800 nm increased with increasing silica content. the transmittance at 400 nm was 25% and fluorescence at 700 nm was observed when the composite was excited with 365 nm wave.
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Key words:
- SiO2
- / polyacrylate
- / nanocomposite
- / ultraviolet curing
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