Preparation and characterization of MWCNTs/stearic acid-octadecyl alcohol@urea formaldehyde resin phase change microencapsules
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摘要: 通过原位聚合法以硬脂酸-十八醇低共融复合相变材料(SA-OA,质量比为50.02%,相变温度为55℃)为芯材,三聚氰胺改性的脲醛树脂(UF)为壁材,氨基化多壁碳纳米管(MWCNTs-NH2)为高导热填料制备了MWCNTs/SA-OA@UF相变微胶囊。采用FTIR、SEM、DSC、TGA和导热系数仪,对MWCNTs/SA-OA@UF相变微胶囊的化学结构、表面形貌、相变性能和导热性能进行表征。讨论了不同的MWCNTs修饰方法、不同乳化剂种类和MWCNTs-NH2添加量对SA-OA@UF相变微胶囊的影响。结果表明:MWCNTs-NH2在溶液中分散性良好;十二烷基苯磺酸钠(SDBS)和曲拉通X-100复配乳化剂使SA-OA@UF相变微胶囊的表面形貌更加光滑平整;添加质量比为0.5%的MWCNTs-NH2,使MWCNTs/SA-OA@UF相变微胶囊的导热系数达到0.224 W/(m·K),提高了38%(55℃),包覆率提高了6.9%,粒度更加均一,热稳定性有明显提高。Abstract: The multi-walled carbon nanotubes/stearic acid-octadecyl alcohol@urea formaldehyde resin (MWCNTs/SA-OA@UF) phase change microcapsules with SA-OA eutectic composite phase change materials(at the mass ratio of 50.02%, phase change temperature was 55℃) as core material, UF modified by melamine as wall material and amino multi-walled carbon nanotubes (MWCNTs-NH2) as highly thermally conductive filler were prepared by using in-situ polymerization method. The chemical structure, morphology, thermal properties and thermal conductivity of the MWCNTs/SA-OA@UF phase change microcapsules were characterized by FTIR, SEM, DSC, TGA and thermal conductivity meter. The effects of different MWCNT modification methods, different types of emulsifiers and the amount of MWCNTs-NH2 added in the SA-OA@UF phase change microcapsules were discussed. The results show that the MWCNTs-NH2 have good dispersibility in the solution; The compounded emulsifiers of sodium dodecyl benzene sulfonate(SDBS) and Triton X-100 make the surface morphology of the SA-OA@UF phase change microcapsules smoother and smoother; The addition of MWCNTs-NH2 with the mass ratio of 0.5% make the MWCNTs/SA-OA@UF phase change microcapsule's thermal conductivity reaches 0.224 W/(m·K), which increases by 38% (55℃), the coating rate increases by 6.9%, the particle size is more uniform and the thermal stability is significantly improved.
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期刊类型引用(10)
1. 吴登科,罗凯,王艳,费华,江慧珍,叶卓铖. 相变微胶囊的制备及其在热储能中的应用进展. 化工新型材料. 2024(08): 39-45 . 百度学术
2. 肖桐,刘庆祎,张家豪,赵佳腾,刘昌会. 热固性树脂基复合相变材料的制备及其储能强化研究进展. 复合材料学报. 2023(03): 1311-1327 . 本站查看
3. 张琦,刘重阳,宋俊,张雪龄,李银雷,栗艳芳. 微胶囊相变储能材料的合成及其应用研究进展. 储能科学与技术. 2023(04): 1110-1130 . 百度学术
4. 刘可,唐波,赵胜悟,刘家源. 硬脂酸复合相变材料研究进展. 化工新型材料. 2023(11): 27-31+36 . 百度学术
5. 王辉,赵悦铭,吴昊,王英刚,王晓旭,王留锁. 过硫酸钾缓释材料的制备及其降解性能——以活性艳红X-3B为例. 沈阳大学学报(自然科学版). 2021(02): 108-116 . 百度学术
6. 区炳显,王承康,闫俊霞,潘嘹,卢立新,孙凌志,韩鹏举. 石墨烯改性相变聚氨酯发泡材料传热特性研究及仿真. 包装工程. 2021(11): 87-95 . 百度学术
7. 王成君,段志英,王爱军,王志超,崔璐娟,苏琼. 基于共晶系相变材料的研究进展. 材料导报. 2021(13): 13058-13066 . 百度学术
8. 张圆圆,杨建森. 脂肪酸相变材料的封装制备及热工性质. 材料导报. 2020(16): 16144-16148 . 百度学术
9. 李兴会,陈敏智,周晓燕. 复合定形相变材料的封装及应用研究新进展. 工程科学学报. 2020(11): 1422-1432 . 百度学术
10. 王信刚,陈忠发,徐伟,尹皓. 癸酸相变微胶囊的制备及热性能. 精细化工. 2019(11): 2207-2212 . 百度学术
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