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以空心玻璃微球(HGM)填充环氧树脂制备了密度为0.56~0.91g/cm3的HGM/环氧复合泡沫塑料。研究了HGM含量对复合泡沫塑料黏度、力学性能、动态力学性能及隔热性能的影响。结果表明:表面偶联处理后增加了HGM的表面亲油性,改善了其与基体树脂间的相容性和界面性能,有利于HGM/环氧复合泡沫塑料性能的提高;体系黏度与HGM含量呈正相关,与温度呈负相关;随着HGM含量的增加,HGM/环氧复合泡沫塑料的压缩强度、弯曲强度和拉伸强度均有一定程度的降低,但是比强度变化不大,材料得到很大程度的轻质化;HGM的引入使得HGM/环氧复合泡沫塑料玻璃化转变温度向低温方向偏移,储能模量呈现先减小后增加的趋势,导热系数由纯环氧树脂的0.203 W/(m·K)减小到HGM含量为40wt%时的0.126 W/(m·K)。HGM/环氧复合泡沫塑料阻尼性能和隔热性能均有所提高。
The hollow glass microspheres (HGM) filled with epoxy resin density of 0.56 ~ 0.91g / cm3 HGM / epoxy composite foam. The effects of HGM content on the viscosity, mechanical properties, dynamic mechanical properties and thermal insulation properties of the composite foam were studied. The results showed that the surface lipophilicity of HGM was increased after surface coupling treatment, the compatibility and interfacial properties of HGM were improved, and the properties of HGM / epoxy composite foam were improved. The viscosity and HGM content of HGM were positive , And negatively correlated with temperature. With the increase of HGM content, the compressive strength, flexural strength and tensile strength of HGM / epoxy composite foam all decreased to a certain degree, but the specific strength was not changed much and the material was very large The glass transition temperature of HGM / epoxy composite foam shifts to the low temperature, the storage modulus decreases first and then increases, the thermal conductivity decreases from 0.203 W / (m · K) to 0.126 W / (m · K) at a HGM content of 40 wt%. HGM / epoxy composite foam damping properties and thermal insulation properties have improved.