以固体石蜡和液体石蜡熔融混合进行复配,复合石蜡的相变温度和相变焓都随固体石蜡含量的增加而升高,以固液比3∶7制备的复合石蜡熔点为28.3℃,相变潜热为100.04kJ/kg.以此复合石蜡作为微胶囊的芯材,以甲苯2,4二异氰酸酯(TDI)和乙二胺为单体,OP-10为乳化剂,采用界面聚合法在复合石蜡表面包覆聚脲囊壁材料制备石蜡/聚脲相变微胶囊,用扫描电镜(SEM)观察了乳化搅拌速度和反应温度对相变微胶囊表面形貌的影响,并用红外光谱(FTIR)、热重(TG)和差示扫描量热法(DSC)对相变微胶囊进行了表征.实验结果表明:在乳化搅拌速度2000r/min、反应温度70℃时制备的石蜡/聚脲相变微胶囊颗粒呈球形分布,平均粒径在3～4μm范围内,分散均匀,颗粒表面光滑、致密,熔点为28.1℃,相变潜热为58.4kJ/kg,包覆效率为87.5％.
参考文献
| [1] | 邹复炳,章学来.石蜡类相变蓄热材料研究进展[J].能源技术,2006(01):29-31,34. |
| [2] | 管学茂,孙倩,朱建平,刘泽华.石蜡基相变材料导热性和液相渗漏研究进展[J].化工新型材料,2013(01):146-148. |
| [3] | 乔英杰,王德民,张晓红,孙柏周.复合相变储能材料研究与应用新进展[J].材料工程,2007(z1):229-232. |
| [4] | Jun-Feng Su;Xin-Yu Wang;Hua Dong.Influence of temperature on the deformation behaviors of melamine-formaldehyde microcapsules containing phase change material[J].Materials Letters,2012:158-161. |
| [5] | 李庆丹,朱冬梅,李娇娇,罗发,周万城.石蜡相变微胶囊的制备及相变性能研究[J].精细化工,2011(01):10-13,28. |
| [6] | 马烽,李永超,陈明辉,宗学刚.蜜胺树脂/硬脂酸丁酯相变微胶囊的制备[J].材料工程,2010(07):42-45,77. |
| [7] | ALICJA N;MA G;BOGUMI G et al.Methods of PCM microcapsules application and the thermal properties of modified knitted fabric[J].Thermochimica Acta,2014,589:158-163. |
| [8] | 单其艳,杨铭,冉瑞龙,蓝广芊.脲醛树脂-石蜡相变微胶囊的制备及性能研究[J].上海纺织科技,2012(07):13-15. |
| [9] | Jun-Feng Su;Sheng-Bao Wang;Jian-Wei Zhou .Fabrication and interfacial morphologies of methanol-melamine-formaldehyde (MMF) shell microPCMs/epoxy composites[J].Colloid and polymer science,2011(2):169-177. |
| [10] | CHO J S;KWON A;CHO C G .Microencapsulation of octadecane as a phase-change material by interfacial polymerization in an emulsion system[J].Colloid and Polymer Science,2002,280(3):260-266. |
| [11] | 袁文辉,戴险峰,李莉,刘都树.双壳层石蜡微胶囊的制备及性能研究[J].高校化学工程学报,2008(05):844-849. |
| [12] | F. Salaun;E. Devaux;S. Bourbigot .Influence of process parameters on microcapsules loaded with n-hexadecane prepared by in situ polymerization[J].Chemical engineering journal,2009(1/2):457-465. |
| [13] | 徐哲,李建强.液体石蜡相变微胶囊的制备及性能表征[J].过程工程学报,2012(02):293-301. |
| [14] | 王小鹏,张毅,沈振球,李东旭.复配石蜡/膨胀珍珠岩相变颗粒的热性能研究[J].新型建筑材料,2011(04):75-78. |
| [15] | 马烽,李艳,程立媛,陈明辉.十八烷-棕榈酸/膨胀石墨相变储能材料的制备与性能[J].航空材料学报,2010(03):66-69. |
| [16] | fKi-jeong Hong;Soo-min Park .PREPARATION AND CHARACTERIZATION OF POLYUREA MICROCAPSULES WITH DIFFERENT DIAMINES[J].Materials Research Bulletin: An International Journal Reporting Research on Crystal Growth and Materials Preparation and Characterization,1999(6):963-969. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%