Page 58 - 201905
P. 58
·826· 精细化工 FINE CHEMICALS 第 36 卷
(3)接触角测试表明,智能控温包装纸的接触
角为 121.82,包装原纸的接触角 88.64,可以得出,
经过涂布后的纸页接触角明显增大,即疏水性增强,
说明智能控温包装纸表面不易被水润湿,在短时间
内具有较好的疏水性。
(4)考虑到涂料成本,当 PCMs/W-VO 2 智能控
2
温水性涂料用量达到 9.0 g/m 时,实验制得的智能
控 温包装 纸的 抗张指 数和 撕裂指 数分 别达 到
2
6.84 kN/m 和 22.69 (mN·m )/g,符合常规包装材料
力学性能要求,因此,该智能控温包装纸适合应用
于智能控温包装领域。
参考文献:
[1] Karamanis A D, Kyritsi E, Krimpalis S. Well-ordered nanoporous
materials for low-temperature water phase changes and solar
evapomtive cooling[J]. Solar Energy Materials & Solar Ceils, 2015,
139: 34-43.
[2] Zhang Li (张丽), Yang Wenbin (杨文彬), Zhang Kai (张凯), et al.
Preparation and propertiy of melamine-formaldehyde resin/paraffin
microencapsulated phase change materials modified by graphene
图 11 智能控温包装纸的抗张指数(a)、撕裂指数(b) oxide[J]. Polymer Materials Science & Engineering (高分子材料科
Fig. 11 Tensile index (a) and tearing index (b) of intelligent 学与工程), 2017, 33(5): 147-151.
temperature control packaging paper [3] Zhou Z H, Wang C D, Sun X H, et al. Heating energy saving
potential from building envelope design and operation optimization
3 结论 in residential buildings[J]. Journal of Cleaner Production, 2018, 174:
413-423.
(1)通过 SEM 观察到 PCMs/W-VO 2 微胶囊呈 [4] Matthias K, Arnaud R, Patrick A, et al. Aerogel-based thermal
圆球状,形态完整,表面附着适量 W-VO 2 颗粒,存 superin-sulation: An overview[J]. Journal of Sol-Gel Science and
Technology, 2012, 63(3): 315-339.
在少量破损现象,并可均匀分布在涂层中,但不能
[5] Hajar M, Luisa D, António P. An overview on silica aerogels
完全覆盖在涂料中而对纸页的平滑度造成一定负面 synthesis and different mechanical reinforcing strategies[J]. Journal
影响,但一定程度上提高了纸页光泽度及红外反射 of Non-Crystalline Solids, 2014, 385: 55-74.
率;EDS 分析表明,智能控温包装纸表面涂层中含有 [6] Xin Cheng (辛成), Lu Shaofeng (陆少锋), Shen Tianwei (申天伟),
et al. Preparation and properties of network polyurethane shell
C、O、V、Si 和 W 5 种元素,从而说明了智能控温
microencapsulated phase change materials via an interfacial
包装纸表面涂层中含有硅类防水剂和 PCMs/W-VO 2
polymerization[J]. Fine Chemicals (精细化工), 2018, 35(7): 1121-
微胶囊;透气度测试表明,相比薄膜材料,纸页透 1125.
气度较好,孔隙率较大,有利于热量的阻隔;相比 [7] Huang Ju (黄菊), Yang Ying (杨莹). Preparation and properties of
织物,纸页透气度虽然较低,但是涂料能在纸页表 transparent nano-ATO/PVB thermal insulation coating[J]. Electroplating
& Finishing (电镀与涂饰), 2016, 35(2): 58-62.
面均匀分布,能降低近红外光透射率而提高其隔热
[8] He Yan (何燕), Zhang Xiong (张雄), Guan Jian (管建). Influence of
控温性能。 metallic oxide pigment on emissivity and solar reflectance of
(2)DSC 和隔热温差测试表明,智能控温包装 insulation coating[J]. Journal of Building Materials (建筑材料学报),
纸的相变温度为 45 ℃,最佳隔热温差为 10.7 ℃, 2015, 18(5): 784-789.
[9] Lin Mei (林美). Preparation and properties of silica-sol/acrylic
与包装原纸相比,同时具备相变热反射和智能控温
emulsion composite thermal reflective insulation coatings[J]. Polymer
效果,将能量以相变潜热方式进行释放或贮存,能 Materials Science & Engineering (高分子材料科学与工程), 2017,
有效提高智能控温性能;FTIR 分析表明,包装原纸 33(3): 169-179
的近红外透射率为 78%,而智能控温包装纸的近红 [10] Guo Junhong (郭军红), Zhang Pengzhong (张鹏中), Li Shuhui (李
外透射率仅为 46%,涂布后的纸页对近红外光的透 淑慧), et al. Preparation of microcapsule phase change materials by
seeded micro-suspension polymerization[J]. Fine Chemicals (精细化
射率降低了近 32%,并在整个太阳光波段都表现出
工), 2016, 33(9): 971-976, 983.
较低的近红外透射率,表明智能控温包装纸具有明 [11] Guo Junhong (郭军红), Yuan Qiang (元强), Xie Hong (谢宏), et al.
显的近红外反射性能,能起到隔热控温效果。 Effects of functional fillers on thermal isolation property of reflective