Aromatic silsesquioxoxanes with amine-groups are used as hardeners of epoxy resins. Mixing them with epoxy is often a challenge as they are usually solid or high viscous. To obtain materials with improved properties it is necessary to find a way to introduce silsesquioxane in epoxy. The present paper reports the influence of the ladder-like (methyl-phenyl)silsesquioxane with aminopropyl substituents (NH₂-SSQO) on the curing and properties of epoxy composites. Diluent-co-hardener to introduce NH₂-SSQO in epoxy resin was proposed. Reaction between the epoxy resin and NH₂-SSQO was proved by ATR-IR spectroscopy and Soxhlet extraction. Thermomechanical analysis showed that NH₂-SSQO/epoxy composites have increased deformability, but lower glass transition temperatures and crosslinking density. NH₂-SSQO/epoxy composite with optimal amount of silsesquioxane has improved mechanical properties, adhesion, cracking and water resistance.

具有胺基的芳族倍半硅氧烷被用作环氧树脂的硬化剂。将它们与环氧树脂混合通常是一个挑战，因为它们通常是固体或高粘度的。为了获得具有改善的性能的材料，必须找到一种将倍半硅氧烷引入环氧树脂的方法。本文报道了具有氨基丙基取代基（NH ₂ -SSQO）的梯状（甲基-苯基）倍半硅氧烷对环氧复合材料的固化和性能的影响。提出了稀释剂-共固化剂，将NH ₂ -SSQO引入环氧树脂。通过ATR-IR光谱法和索氏提取证明了环氧树脂与NH ₂ -SSQO之间的反应。热力学分析表明NH ₂-SSQO /环氧复合材料具有更高的可变形性，但玻璃化转变温度和交联密度较低。最佳含量的倍半硅氧烷的NH ₂ -SSQO /环氧复合材料具有改善的机械性能，附着力，抗裂性和耐水性。