丝织物/玻璃纤维毡增强复合材料的弯曲性能研究

Study on bending properties of silk fabric and glass fiber mat reinforced composites

通过对丝织物/玻璃纤维毡增强复合材料进行三点弯曲、低周弯曲疲劳测试,研究了丝绸的加入对其弯曲性能的影响。结果表明:丝绸在第三层的混杂型复合材料的弯曲模量和强度在三种混杂型复合材料中最高,比丝绸在第一层的混杂型复合材料分别高出16.3%和8.1%。丝织物的经纬方向虽有差异,但是在复合材料中没有体现出来。55%,70%和85%三个预加载水平的低周弯曲疲劳对其没有产生显著的影响。丝绸的加入可以改善玻璃纤维毡增强复合材料的抗弯曲疲劳性能。

In this paper,the impact of mixing silk fabric on the bending properties of silk fabric and glass fiber mat reinforced composites are investigated by conducting three point bending and low cycle bending fatigue tests. The experimental result shows that hybrid composites with silk fabric in the third layer has highest flexural strength and flexural modulus among three kinds of hybrid composites,it＇s 16. 3% and 8. 1% higher than these of hybrid composites with silk fabric in the first layer respectively. The warp and filling direction of silk fabric are different,but they are not shown in composites. 55%,70% and 85% pre-load levels of low cycle bending fatigue（ LCBF） had no significant effects on silk fabric and glass fiber mat reinforced composites. Mixing silk fabric can strengthen the antibending fatigue property of glass fiber mat reinforced composites.