Development of functional epoxy resins by the introduction of intra- and/or inter-free spaces into network structures.

详细研究了环氧树脂网络内部和间隙对其热力学和光学性能的影响。通过从“康诺利表面”周围区域的体积中减去它们的范德华体积来估计内部和内部空间的体积。因此，很明显，SQ部分的内部空间很小，可以忽略不计，但它们的外部空间非常大。引入大空间后，杂化体的折射率和介电常数显著降低。模量和Tg取决于网络中主链的填充密度，而折射率和介电常数取决于包括链端和链支在内的整个分子链的填充密度。

Effects of the intra- and inter-spaces in the epoxy networks on their thermo- mechanical and optical properties were investigated in detail. The volumes of the intra- and inter-spaces were estimated by subtracting their van der Waals volume from the volume of the area surrounded by the “Connolly Surface”. Thus, it became to be clear that the intra-space of the SQ moieties is negligible small, but their outer-space very large. The refractive index and dielectric constant of the hybrids significantly decreased with an introduction of the large outer-space. In addition, it was shown that the modulus and Tg depend on the packing density of the main chains in the network, but the refractive index and dielectric constant on the packing density of the whole molecular chains including chain ends and branches.