本发明提供了一种用于潜水衣的复合相变材料,其由以下步骤制备而成:S1.将微晶纤维素加入氢氧化钠尿素水溶液中,得到微晶纤维素溶液;S2.将壳聚糖加入乙酸水溶液中,搅拌后加入皂土,混合均匀得到皂土‑壳聚糖溶液;S3.将微晶纤维素溶液与皂土壳聚糖溶液混合,搅拌得到水凝胶;S4.将水凝胶冷冻干燥得到气凝胶粉体;S5.将气凝胶粉体去除残留的氢氧化钠和尿素,冷冻干燥得到皂土‑壳聚糖‑微晶纤维素气凝胶;S6.真空环境下将皂土‑壳聚糖‑微晶纤维素气凝胶浸入熔化后的正癸酸中得到混合物;S7.将混合物上过量正癸酸吸附于滤纸上。本发明还提供了该复合相变材料的制备方法。本发明所提供的复合相变材料将相变材料固定于气凝胶内,具有较好的热稳定性能。

    The invention provides a composite phase change material for diving suit, wherein the composite phase change material is prepared by the following steps: S1, adding microcrystalline cellulose into a sodium hydroxide urea aqueous solution to obtain a microcrystalline cellulose solution; S2, adding chitosan into an acetic acid aqueous solution, stirring, adding bentonite, and uniformly mixing to obtain a bentonite-chitosan solution; S3, mixing the microcrystalline cellulose solution with the bentonite chitosan solution, and stirring to obtain hydrogel; S4, freezing and drying the hydrogel to obtain aerogel powder; S5, removing residual sodium hydroxide and urea from the aerogel powder, and performing freeze drying to obtain bentonite-chitosan-microcrystalline cellulose aerogel; S6, soaking the bentonite-chitosan-microcrystalline cellulose aerogel into the melted n-decanoic acid in a vacuum environment to obtain a mixture; and S7, adsorbing excessive n-decanoic acid on the mixture onto filter paper. The invention also provides a preparation method of the composite phase change material. According to the composite phase change material provided by the invention, the phase change material is fixed in the aerogel, so that the composite phase change material has relatively good thermal stability.


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    Title :

    一种用于潜水衣的复合相变材料及其制备方法


    Publication date :

    2022-10-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    C09K Materialien für Anwendungen, soweit nicht anderweitig vorgesehen , MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR / B63C LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS , Zuwasserlassen, Trockenstellen, Docken oder Bergen von Schiffen