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以环氧树脂、氰酸酯树脂和中空玻璃微珠为原料制备了高性能复合泡沫材料,通过示差扫描量热分析和热重分析以及弯曲性能和吸水率测试研究了玻璃微珠含量对复合泡沫材料性能的影响。结果表明,玻璃微珠的加入促进了环氧与氰酸酯间的固化反应。加入玻璃微珠后,复合材料的最大热分解温度和玻璃化转变温度变化不大,但初始热分解温度略有下降。与纯树脂基体相比,复合材料的弯曲模量基本保持不变,但在玻璃微珠质量分数从5%增至10%时,弯曲强度急剧下降。此外,随着空心玻璃微珠含量的增加,复合泡沫材料的密度逐渐降低,吸水率逐渐增加。
Epoxy resin, cyanate ester resin and hollow glass beads were used as raw materials to prepare high-performance composite foams. The effects of the content of glass microbeads on the properties of composite foams were investigated by differential scanning calorimetry and thermogravimetric analysis, flexural properties and water absorption. The impact of material properties. The results showed that the addition of glass beads promoted the curing reaction between epoxy and cyanate. After adding glass beads, the maximum thermal decomposition temperature and glass transition temperature of the composites did not change much, but the initial thermal decomposition temperature decreased slightly. Compared with the pure resin matrix, the flexural modulus of the composite material remains unchanged, but the bending strength decreases sharply when the mass fraction of glass beads is increased from 5% to 10%. In addition, as the content of hollow glass beads increases, the density of the composite foam gradually decreases, and the water absorption gradually increases.