Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-thermal-conductivity phase change microcapsule as well as preparation method and application thereof
The invention discloses a high-thermal-conductivity phase change microcapsule and a preparation method and application thereof.The high-thermal-conductivity phase change microcapsule comprises a shell layer and a phase change core material, the shell layer is composed of polymethyl methacrylate and oleophylic modified graphene, and the oleophylic modified graphene accounts for 2-8 wt% of the weight of the shell layer. According to the method, aluminum chloride is used as a catalyst, and graphene and C12-C18 carboxylic acid react in an alcohol-water solution at 70-80 DEG C, so that C12-C18 oleophylic groups are grafted to the surface of graphene, and the oleophylic modified graphene is obtained. The oleophylic modified graphene is added in the cross-linking process of methyl methacrylate, a phase change microcapsule shell layer with high thermal conductivity can be prepared, the shell layer is compact, and the risk of leakage of the phase change core material can be reduced.
本发明公开了一种高导热相变微胶囊及其制备方法和应用，该高导热相变微胶囊包括壳层和相变芯材，壳层由聚甲基丙烯酸甲酯和亲油改性石墨烯组成，亲油改性石墨烯占壳层重量的2wt％～8wt％。本发明以氯化铝为催化剂，使石墨烯和C12～C18羧酸在70～80℃的醇‑水溶液中反应，从而将C12～C18亲油基团接枝到石墨烯表面，得到亲油改性石墨烯。在甲基丙烯酸甲酯交联过程中加入亲油改性石墨烯，能够制备具有高导热性的相变微胶囊壳层，该壳层较致密，能降低相变芯材泄露的风险。
High-thermal-conductivity phase change microcapsule as well as preparation method and application thereof
The invention discloses a high-thermal-conductivity phase change microcapsule and a preparation method and application thereof.The high-thermal-conductivity phase change microcapsule comprises a shell layer and a phase change core material, the shell layer is composed of polymethyl methacrylate and oleophylic modified graphene, and the oleophylic modified graphene accounts for 2-8 wt% of the weight of the shell layer. According to the method, aluminum chloride is used as a catalyst, and graphene and C12-C18 carboxylic acid react in an alcohol-water solution at 70-80 DEG C, so that C12-C18 oleophylic groups are grafted to the surface of graphene, and the oleophylic modified graphene is obtained. The oleophylic modified graphene is added in the cross-linking process of methyl methacrylate, a phase change microcapsule shell layer with high thermal conductivity can be prepared, the shell layer is compact, and the risk of leakage of the phase change core material can be reduced.
本发明公开了一种高导热相变微胶囊及其制备方法和应用，该高导热相变微胶囊包括壳层和相变芯材，壳层由聚甲基丙烯酸甲酯和亲油改性石墨烯组成，亲油改性石墨烯占壳层重量的2wt％～8wt％。本发明以氯化铝为催化剂，使石墨烯和C12～C18羧酸在70～80℃的醇‑水溶液中反应，从而将C12～C18亲油基团接枝到石墨烯表面，得到亲油改性石墨烯。在甲基丙烯酸甲酯交联过程中加入亲油改性石墨烯，能够制备具有高导热性的相变微胶囊壳层，该壳层较致密，能降低相变芯材泄露的风险。
High-thermal-conductivity phase change microcapsule as well as preparation method and application thereof
一种高导热相变微胶囊及其制备方法和应用
WANG YAZHOU (Autor:in) / YANG GUOKUN (Autor:in) / LONG YONG (Autor:in) / YU WENZHI (Autor:in) / LIU KAIZHI (Autor:in) / LI CHEN (Autor:in)
12.04.2022
Patent
Elektronische Ressource
Chinesisch
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