硅酸盐通报2018，Vol.37Issue(6)：2035-2041,7.
固井水泥环微裂纹自修复微胶囊的制备与性能研究
Synthesis and Performance Study of Self-repairing Microcapsules for Micro-cracks of Oil-well Cement Matrix
摘要
Abstract
A new type of self-repairing microcapsules (with epoxy resin as the core and urea formaldehyde resin as the wall) for micro-cracks of oil-well cement matrix.The particle size distribution, surface topography, chemical composition and thermal stability of the microcapsules were analyzed by the Laser particle size analyzer, scanning electron microscopy ( SEM ), infrared spectroscopy ( FT-IR ) and differential thermal gravimetric analyzer ( TG/DTA) respectively.After preparation, microcapsules were added into cement paste, and the compressive strength and strength recovery rate of oil-well cement matrix were tested to evaluate the self-repairing effect of microcapsule.The results show that the average particle size is about 36.08 μm, the surface of microcapsules is rough and its thermal stability is good.In addition, the addition of microcapsules can improve the compressive strength of cement matrix by increasing the strength recovery rate ηof cement matrix (after repairing) to 2-3 times co MPared to that of pure cement matrix.When the content of microcapsule is 1.5wt%, the samples have the most excellent mechanical properties than the others.关键词
水泥石/自修复/微胶囊/热稳定性/力学性能Key words
cement matrix/self-repairing/microcapsules/thermal stability/mechanical property分类
建筑与水利引用本文复制引用
张春梅,程小伟,杨永胜,郭小阳,陈祖伟..固井水泥环微裂纹自修复微胶囊的制备与性能研究[J].硅酸盐通报,2018,37(6):2035-2041,7.基金项目
国家重点研发计划项目(2016YFB0303600) （2016YFB0303600）
2015年四川省教育厅基金项目(15ZB0062) （15ZB0062）
四川省高校油气田材料重点实验室项目(X151517KCL23) （X151517KCL23）
