轻质环氧基复合材料隔热性能的实验与数值研究

发布时间：2018-06-27 16:56

本文选题：空心玻璃微球 + 环氧树脂　；参考：《玻璃钢/复合材料》2017年11期

【摘要】：通过实验和数值模拟方法研究了空心玻璃微球/环氧树脂复合材料隔热性能。首先使用ANSYS/APDL建立代表性体积单元,探讨了模拟过程中模型尺寸、填料体积分数、填料平均粒径及基体与填料导热系数之比(λ_m/λ_p,λ_m保持不变)对复合材料导热系数的影响。数值研究结果表明:当代表性体积单元尺寸大于500μm时,模型尺寸对复合材料导热系数的计算结果影响较小;复合材料导热系数随填料体积分数和λ_m/λ_p的增大而减小,且基本不受填料粒径影响。其次,将复合材料导热系数实验值和计算结果进行对比,比较发现导热系数计算结果和实验值及Agari模型理论值吻合较好,证明了计算方法的可靠性。同时,空心玻璃微球的掺入有效地降低了树脂的密度。轻质隔热的空心玻璃微球/环氧树脂复合材料有潜力成为一种具有广泛应用前景的节能环保材料。
[Abstract]:The thermal insulation properties of hollow glass microspheres / epoxy resin composites were studied by means of experiments and numerical simulation. First, the representative volume unit was established by ANSYS / APDL, and the effects of model size, packing volume fraction, average particle size of filler and the ratio of matrix to filler thermal conductivity (位 m / 位 app, 位 stack remain unchanged) on the thermal conductivity of composites were discussed. The numerical results show that the model size has little effect on the calculation results of composite thermal conductivity when the size of representative volume unit is larger than 500 渭 m, and the thermal conductivity decreases with the increase of packing volume fraction and 位 m / 位 P, And it is not affected by the particle size of filler. Secondly, by comparing the experimental results with the calculated results, it is found that the calculated results are in good agreement with the experimental values and the theoretical values of the Agari model, which proves the reliability of the calculation method. At the same time, the density of resin was reduced effectively by the incorporation of hollow glass microspheres. The hollow glass microspheres / epoxy resin composites with light heat insulation have the potential to become a kind of energy saving and environmental protection materials with wide application prospect.
【作者单位】：武汉理工大学新材料力学理论与应用湖北省重点实验室;南水北调中线干线工程建设管理局河南分局;湖北水利水电职业技术学院建筑工程系;
【基金】：“十二五”国家科技支撑计划“南水北调工程混凝土病害防治关键技术研究与示范”(2015BAB07B04)
【分类号】：TB332

【相似文献】