固化湿度对复合材料层合板力学性能的影响与分析

Effect of Curing Humidity on Mechanical Properties of Composite Laminates

树脂基复合材料在固化过程中,环境湿度对基体和增强纤维固化成型的影响最直接的表现是复合材料件的强度。为了研究固化湿度(相对湿度)对复合材料层合板力学性能的影响规律,本工作以T3003K40B/1000(增强纤维)与LY1564SPT(基体树脂)为例,分别对固化环境湿度为30%和60%下固化成型的碳纤维复合材料层合板标准试样进行力学性能测试,并通过扫描电子显微镜对试样的断口区域进行检测扫描。检测及试验结果表明:在其他固化条件均一致的情况下,固化环境湿度为30%时的碳纤维复合材料层合板的拉伸、压缩强度值均高于固化环境湿度为60%时的碳纤维复合材料层合板;固化环境湿度为30%时的碳纤维复合材料层合板的层间结合效果较好;测试及分析结果可为技术人员进行相同材料的制备提供一定的参考依据。

In the curing process of resin matrix composites, the most direct effect of ambient humidity on the curing process of matrix and reinforced fibers is the strength of composite. In order to study the effect of curing humidity (relative humidity) on the mechanical properties of composite laminates, this paper takes T300 3K 40B/1000 (reinforcing fiber) and LY 1564 SPT (matrix resin) as examples to test the mechanical properties of standard samples of carbon fiber composite laminates cured at 30% and 60% ambient humidity respectively, and to test the mechanical properties of the samples by scanning electron microscopy. The fracture area was examined and scanned. The testing and test results show that the tensile and compressive strength of the carbon fiber composites laminates cured at 30% ambient humidity are higher than those of the CFRP laminates cured at 60% ambient humidity, and the interlaminar bonding effect of the carbon fiber composites laminates cured at 30% ambient humidity is better. It provides a reference for technicians to prepare the same materials.