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实验研究了温度与湿度因素对玻璃微珠增强硬质聚氨酯复合泡沫塑料(玻璃微珠/RPUF)黏弹力学性能的影响。结果表明,湿度对黏弹力学性能有显著的影响,随着湿度的增加,玻璃微珠/RPUF的储能模量减小,刚度下降,力学损耗因子值增加,蠕变柔量增大,柔韧性增强。湿度对玻璃微珠/RPUF弯曲蠕变性能的影响具有类似于时间-温度等效原理的等效关系,并给出了60℃/50%RH参考温湿度下玻璃微珠/RPUF的蠕变主曲线和平移因子。
The effects of temperature and humidity on the viscoelastic properties of glass-reinforced rigid polyurethane composite foams (glass beads / RPUF) were studied experimentally. The results show that humidity has a significant effect on the viscoelastic properties. With the increase of humidity, the storage modulus of glass beads / RPUF decreases, the stiffness decreases, the mechanical loss factor increases, the creep compliance increases, and the flexibility Sexual enhancement. The effect of humidity on the flexural creep properties of glass beads / RPUF has an equivalent relationship similar to the time-temperature equivalent principle and gives the main creep of glass beads / RPUF at 60 ° C / 50% RH reference temperature and humidity Curve and translation factor.