Effect of acetic acid content on in situ preparation of epoxy/zirconia hybrid materials
Effect of acetic acid content on in situ preparation of epoxy/zirconia hybrid materials
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DOI：
10.1007/s10853-010-4702-2
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发表时间：
2010-06
影响因子：
4.5
通讯作者：
M. Ochi;D. Nii;M. Harada
中科院分区：
文献类型：
--
作者：
M. Ochi;D. Nii;M. Harada
以乙酸改性的醇酸锆盐为原料，采用原位聚合法制备了环氧树脂/氧化锆杂化材料。乙酸改性醇酸锆粉的反应性随乙酸量的增加而变化。在杂化材料中，随着醇锆反应性的变化，杂化材料的相结构在均相和纳米相分离之间变化。在分子水平上，随着杂化分散氧化锆中氧化锆含量的增加，橡胶区的储能模数显著增加，玻璃化转变温区的tan-δ峰面积减小。此外，均相体系中杂化材料的光学性能优于纳米相分离体系中的杂化材料。
Epoxy/zirconia hybrid materials were synthesized via in situ polymerization of acetic acid-modified zirconium alkoxide. The reactivity of acetic acid-modified zirconium alkoxide changed with the amount of acetic acid added. In the hybrid materials, the phase structure varied between the homogeneous phase and nanophase separation as the reactivity of zirconium alkoxide changed. At the molecular level, the storage modulus in the rubbery region significantly increased and the peak area of tan δ in the glass-transition temperature region decreased with increasing zirconia contents in the hybrid dispersed zirconia. Additionally, the optical properties of the hybrid materials in the homogeneous phase were better than those in the system with nanophase separation.