采空区密闭墙中微胶囊粒径对其囊壁强度的影响
Effect of particle size of microcapsules on strength of capsule wall in airtight wall of goaf
-
摘要: 针对采空区密闭墙裂隙修复滞后的问题,提出了采用微胶囊在密闭墙裂隙演化过程的初始阶段(启裂时段)开启裂隙修复的方法。该方法是利用裂隙尖端应力作用,撕破微胶囊囊壁,使包裹在囊壁内的修复剂流出,充填裂隙,在发生固化反应后完成裂隙修复。在密闭墙裂隙修复过程中,微胶囊粒径影响其囊壁强度,直接关系修复效果。为了研究微胶囊粒径对其囊壁强度的影响规律,通过正交试验制备了8种不同粒径同种壁厚的微胶囊,采用SEM扫描电镜进行粒径及壁厚表征,利用纳米压痕技术测定囊壁强度,得出囊壁强度随粒径的增大逐渐减小的二次函数关系。Abstract: Aiming at the problem of delayed repair of cracks in the airtight wall of the goaf, a method to initiate crack repair using microcapsules in the initial stage of crack evolution of the airtight wall (cracking period) is proposed. This method makes use of the stress at the crack tip. The microcapsule wall is torn to allow the repair agent wrapped in the wall of the capsule to flow out and fill the gap. After the curing reaction, crack repair is completed. During the crack repair process of the airtight wall, the particle size of the microcapsule affects the strength of the capsule wall and directly affects the repair effect. In order to study the influence of particle size on the strength of microcapsules, eight kinds of microcapsules with different particle diameters and the same wall thickness were prepared by orthogonal experiments. The particle size and wall thickness were characterized by SEM, and the strength of the capsule wall was measured using nanoindentation technology. The quadratic function relationship that the strength of the capsule wall decreases with the increase of the particle size is obtained.
-
Keywords:
- microcapsule /
- partical size /
- capsule wall strength /
- airtight wall /
- goaf
-
-
[1] 李超.含贯穿裂隙试件在双轴和水压力作用下扩展试验和数值模拟研究[D].济南:山东大学,2017. [2] 王辉,高召宁,孟祥瑞,等.单裂隙岩石在单轴压缩下破坏的数值模拟[J].煤矿安全,2015,46(1):29-32. WANG Hui, GAO Zhaoning, MENG Xiangrui, et al. Numerical simulation of single fracture rock damage under uniaxial compression[J]. Safety in Coal Mines, 2015, 46(1): 29-32.
[3] 王辉.含裂隙岩石破坏过程及相关规律的数值模拟研究[D].淮南:安徽理工大学,2015. [4] ACAI M, KAISER P K, TASAKA Y M, et al. Generalized crack initiation and crack damage stress thresholds of brittle rock masses near underground excavations[J]. International Journal of Rock Mechanics and Mining Sciences, 2004, 41(5): 833-847. [5] 张茜,吴明跃,胡相明.催化剂对聚氨酯/水玻璃灌浆材料力学性能的影响[J].矿业研究与开发,2019,39(10):31-36. ZHANG Qian, WU Mingyue, HU Xiangming. The effect of catalyst on mechanical properties of polyurethane/water glass grouting materials[J]. Mining Research and Development, 2019, 39(10): 31-36.
[6] 程文凤.微胶囊包埋的微生物自修复混凝土裂缝过程性能研究[D].深圳:深圳大学,2016. [7] 张明明.T应力对岩石断裂韧性及裂纹启裂的影响[D].成都:西南石油大学,2017. [8] 刘超.完整岩石试件和含有裂隙岩石试件在单轴压缩下破坏过程的数值模拟研究[J].煤炭技术,2014,33(8):249-251. LIU Chao. Numerical simulation of failure process intact rock specimens containing crack rock specimens under uniaxial compression[J]. Coal Technology, 2014, 33(8): 249-251.
[9] 王彦琪.岩石单轴压缩破坏过程的CT试验研究[D].太原:太原理工大学,2013. [10] 牛心刚,孟贤正,张永将,等.裂纹启裂规律对煤岩体破裂行为的影响[J].辽宁工程技术大学学报(自然科学版),2016,35(2):129-133. NIU Xingang, MENG Xianzheng, ZHANG Yongjiang, et al. Influence of crack initiation law to fracture behavior of coal and rock mass[J]. Journal of Liaoning Technical University(Natural Science), 2016, 35(2): 129-133.
[11] 张鸣.水泥基材料用微胶囊自修复技术与原理的研究[D].长沙:中南大学,2013. [12] 成小乐,梅超,屈银虎,等.碳纳米管对微胶囊铜复合浆料导电性能的影响[J].材料科学与工艺,2019. CHENG Xiaole, MEI Chao, QU Yinhu, et al. Effect of carbon nanotubes on electrical conductivity of microencapsulated copper electron paste[J]. Meterals Science and Technology, 2019, 1-10.
[13] 万里鹰,肖春平,肖洋,等.复合微胶囊填充型环氧树脂自修复复合材料的老化性能[J/OL].高分子材料科学与工程,2020,36(3):133-139. WAN Liying, XIAO Chunping, XIAO Yang, et al. Aging properties of microcapsule-filled epoxy resinself-healing composites[J/OL]. Polymer Materials Science & Engineering, 2020, 36(3): 133-139.
[14] 李思超,韩朋,许华平.自修复高分子材料[J].化学进展,2012,24(7):1346-1352. LI Sichao, HAN Peng, XU Huaping. Self-healing polymeric materials[J]. Progressin Chemistry, 2012, 24(7): 1346-1352.
[15] 杨颖旎,尚丽娜,赵俊淇,等.聚氨酯相变储能微胶囊的制及性能表征[J].化工新型材料,2019,47(12):91-94. YANG Yingni, SHANG Lina, ZHAO Junqi, et al. Preparation and characterization of polyurethane phase change energy storage microcapsules[J]. New Chemical Materials, 2019, 47(12): 91-94.
[16] 文玉峰,何璞祯,马晓谱,等.阻燃剂的微胶囊化技术在聚合物阻燃改性中的研究进展[J].北京服装学院学报(自然科学版),2019,39(4):77-86. WEN Yufeng, HE Puzhen, MA Xiaopu, et al. Review on the microencapsulization of flame retardants and application in flame retardant polymers[J]. Journal of Beijing Institute of Fashion Technology(Natural Science), 2019, 39(4): 77-86.
[17] 邢峰,倪卓,汤皎宁,等.自修复混凝土系统的研究进展[J].深圳大学学报理工版,2013,30(5):486-494. XING Feng, NI Zhuo, TANG Jiaoning, et al. State-of-the-art for self-healing concrete[J]. Journal of Shenzhen University Science and Engineering, 2013, 30(5): 486-494.
[18] 周厚阔,秦士友,高立营,等.基于氧化石墨烯双亲性制备相变微胶囊的研究[J/OL].齐鲁工业大学学报,2019(6):48-52. ZHOU Houkuo, QIN Shiyou, GAO Liying, et al. Graphene oxide as surfactant for preparation of microencapsulated phase change material[J/OL]. Journal of QiLu University of Technology, 2019(6): 48-52.
[19] 肖福生.酚醛树脂微胶囊的力学性能及其在自修复混凝土中的应用研究[D].深圳:深圳大学,2016. [20] 宋云飞,娄鸿飞,吕绪良,等.原位聚合法制备微胶囊的研究进展[J].化工新型材料,2018,46(9):30-33. SONG Yunfei, LOU Hongfei, LYU Xuliang, et al. Advances in preparation of microcapsule by in-situ polymerization[J]. New Chemical Materials, 2018, 46(9): 30-33.
[21] 刘景勃,龚桂胜,钟玉鹏,等.原位聚合法制备脲醛树脂包覆环氧树脂微胶囊[J].合成树脂及塑料,2015, 32(5):27-31. LIU Jingbo, GONG Guisheng, ZHONG Yupeng, et al. Preparation of poly(urea-formaldehyde) microcapsules filled with epoxy resins via in-situ polymerization method[J]. China Synthetic Resin and Plastics, 2015, 32(5): 27-31.
[22] 焦凯,陈晨,李磊,等.基于正交试验设计的透水混凝土关键性能究[J].硅酸盐通报,2019,38(6):1839. JIAO Kai, CHEN Chen, LI Lei, et al. Performance of pervious concrete based on orthogonal experimental design[J]. Bulletin of the Chinese Ceramic Society, 2019, 38(6): 1839.
[23] 宁奕冰,唐辉明,张勃成,等.基于正交设计的岩石相似材料配比研究及底摩擦物理模型试验应用[J/OL].岩土力学,2020(6):1-11. NING Yibing, TANG Huiming, ZHANG Bocheng, et al. Investigation of the rock similar material proportion based on orthogonal design and its application in base friction physical model tests[J/OL]. Rock and Soil Mechanics, 2020(6): 1-11.
[24] 陈一帆.正交法在饮料研发中的应用现状—2010~2018部分文献分析[J].轻工科技,2019,35(11):22-24. [25] 付明明,左亚雯,张雪峰.深部开采微胶囊自修复围岩裂隙试验研究[J].煤炭科学技术,2018,46(12):126-131. FU Mingming, ZUO Yawen, ZHANG Xuefeng. Study on micro capsule self repair experiment of surrounding rock cracks in deep mining[J]. Coal Science and Technology, 2018, 46(12): 126-131.
[26] 刘宁,张春生,褚卫江.锦屏深埋大理岩破裂特征与损伤演化规律[J].岩石力学与工程学报,2012,31(8):1606-1613. LIU Ning, ZHANG Chunsheng, CHU Weijiang. Fracture characteristics and damage evolution law of jinping deep marble[J]. Chinese Journal of Rock Mechanics and Engineering, 2012, 31(8): 1606-1613.
[27] 欧志华,肖毅,曹晖,等.相变微胶囊对砂浆物理力学性能的影响[J].湖南工业大学学报,2018,32(3):37-41. OU Zhihua, XIAO Yi, CAO Hui, et al. Influence of phase change micro-capsule on the physical mechanical properties of mortar[J]. Journal of Hunan University of Technology, 2018, 32(3): 37-41.
-
期刊类型引用(2)
1. 吕茂云，李爱国，李蒙. 矿井采空区火灾监测预警技术研究. 山东煤炭科技. 2024(03): 84-88 . 
百度学术
2. 张园萍，马博宇，余长宏，贾新磊，吕建华. 碳化硅-酚醛树脂微胶囊的制备及表征. 塑料科技. 2023(07): 13-17 . 百度学术
其他类型引用(1)
计量
- 文章访问数: 29
- HTML全文浏览量: 0
- PDF下载量: 0
- 被引次数: 3
下载:
