Fiber-reinforced polymer composites under severe environmental conditions including humidity, high temperatures and UV radiation have been recently used in space, automotive, construction, wind turbines and marine industries. Glass fabric-reinforced epoxy composites (GFRPs) have high sensitivity to moisture and temperature of ultraviolet (UV) accelerated aging that resulted in a reduction of mechanical and toughness properties. This paper attempts to modify GFRPs by incorporating sewage sludge ash (SSA) waste particle, to enhance the composite resistance against UV aging. The behavior of interlaminar fracture toughness of mode I for aged and unaged specimens was investigated using a double-cantilever beam (DCB) test with the effect of SSA particle inclusion. The results revealed that the deterioration of interlaminar fracture toughness values was owing to expose to 1000 h of UV accelerated aging. However, these values were improved with the incorporation of SSA. The fracture toughness of mode I reached to peak value due to SSA inclusion of 10% (wt) with an increment of 14.3%, compared to the aged unfilled composite, which this peak value was decreased due to UV aging by 1.7% compared to the corresponding unaged composite. The degradation level of delamination energy was increased at high SSA content to reach 26.8% for aged GFRP specimen with SSA content of 20% (wt) compared to the corresponding unaged specimen. The mass variation of DCB composites was decreased gradually because of 1000 h of UV aging and the minimum weight loss was 1.25% obtained at SSA inclusion of 5% (wt). The water absorption of the composites was slightly increased with the inclusion of SSA particle. SEM and optical images were taken to observe the adhesion behavior within the glass/SSA/epoxy system.

最近，在湿度，高温和紫外线辐射等恶劣环境条件下的纤维增强聚合物复合材料已用于航天，汽车，建筑，风力涡轮机和船舶工业。玻璃纤维增​​强的环氧复合材料（GFRP）对湿气和紫外线（UV）加速老化具有很高的敏感性，从而降低了机械性能和韧性。本文尝试通过掺入污水污泥灰（SSA）废物颗粒来改性GFRP，以增强复合材料的抗紫外线老化性能。利用双悬臂梁（DCB）试验，在包含SSA颗粒的影响下，研究了老化和未老化试样的I型层间断裂韧度行为。结果表明，层间断裂韧性值的下降是由于暴露于紫外线加速老化1000 h而引起的。但是，通过合并SSA可以提高这些值。与未填充的老化复合材料相比，由于添加了10％（wt）的SSA，模式I的断裂韧性达到峰值，与未填充的复合材料相比，其峰值降低了1.7％。相应的未老化复合材料。与相应的未老化试样相比，高SSA含量下老化的GFRP标本的分层能量的降解水平增加，达到26.8％，SSA含量为20％（wt）。DCB复合材料的质量变化由于1000 h的紫外线老化而逐渐降低，在加入5％（wt）的SSA时，最小重量损失为1.25％。加入SSA颗粒后，复合材料的吸水率略有增加。拍摄SEM和光学图像以观察玻璃/ SSA /环氧树脂体系内的粘附行为。