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《工程塑料应用》 2021年第10期
DOI:10.3969/j.issn.1001-3539.2021.10.003
有机硅改性PMMA壁材相变储能微胶囊制备与性能
王中立12,胡先海2,吴礼丽12,谢金刚12,江照雯3
1.安徽职业技术学院建筑工程学院,合肥 230011; 2.安徽建筑大学安徽省先进建筑材料重点实验室,合肥 230022; 3.国网安徽省电力有限公司检修分公司,合肥 230061 
Preparation and Properties of Phase Change Energy Storage Microcapsules based on PMMA Capsule Shells Modified by Organosilicon
Wang Zhongli12, Hu Xianhai2, Wu Lili12, Xie Jingang12, Jiang Zhaowen3
1. College of Architectural Engineering, Anhui Vocational and Technical College, Hefei 230011, China; 2. Anhui Key Laboratory of Advanced Building Materials, Hefei 230022, China; 3. State Grid Anhui Maintenance Company, Hefei 230061, China 
摘要:以石蜡作为芯材,以有机硅改性聚甲基丙烯酸甲酯(PMMA)作为壁材制备了相变微胶囊(MicroPCMs)。采用傅里叶变换红外光谱、扫描电子显微镜、差示扫描量热分析、热重分析等方法分析了MicroPCMs的产物成分、表观形貌、储热能力和热稳定性。结果表明,随着含硅聚氨酯预聚体含量的提高,MicroPCMs表面逐渐趋于致密和光滑,相变焓和石蜡含量也随之提高,最优时熔融焓达98.6 J/g,结晶焓达97.9 J/g,石蜡质量分数达70.3%,耐热性也随之提高,最优时第一阶段和第二阶段最大分解速率温度分别为335.6℃和442.1℃。 
Abstract:Micro phase change microcapsules (MicroPCMs) were prepared by using paraffin as core material and silicone modified polymethacrylate(PMMA) as capsule shell. Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and thermogravimetric (TG) analysis were used to analyze the composition, morphology, thermal storage capacity and thermal stability of MicroPCMs. The results show that with the increase of the content of silicon-containing polyurethane prepolymer, the surface of MicroPCMs tends to be compact and smooth, and the enthalpy of phase transformation and paraffin content also increase. Under the optimal conditions, the melting enthalpy is 98.6 J/g, the crystallization enthalpy is 97.9 J/g, and the paraffin content is 70.3%. The heat resistance also increases. Under the optimal conditions, the maximum decomposition rate temperature in the first stage is 335.6℃, and in the second stage is 442.1℃. 
关键词:微胶囊化;储能;石蜡;有机硅;聚甲基丙烯酸甲酯 
Keywords:microencapsulation; thermal energy storage; paraffin; organosilicon; polymethacrylate 
基金:国家自然科学基金面上项目(51573001),安徽省高校科学研究项目(KJ2020ZD76,KJ2018A0707,KJ2020A1033) 
本文引用格式:
王中立,胡先海,吴礼丽,等.有机硅改性PMMA壁材相变储能微胶囊制备与性能[J].工程塑料应用,2021,49(10):12-16,23.
Wang Zhongli,Hu Xianhai,Wu Lili,et al. Preparation and properties of phase change energy storage microcapsules based on PMMA capsule shells modified by organosilicon[J]. Engineering Plastics Application,2021,49(10 ):12-16,23. 

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