双分布聚合物泡沫材料热性能的有限元计算

doi:10.19894/j.issn.1000-0518.200349

摘要/Abstract

摘要： 采用有限元法计算了双分布聚合物泡沫的泡孔分布对材料热性能的影响。研究了不同孔隙率下材料热通量的变化,得到了泡孔分布形式、孔隙率与导热系数之间的关系。结果表明,孔隙率在30%~70%之间时,双分布泡孔结构材料的保温性优于单分布泡孔结构材料。其次,随着孔隙率与大孔径泡孔面积占比的增加,材料保温性能增强。最后,相同孔隙率的情况下,三分布泡孔结构材料中,随着大孔面积占比的增加,材料的保温性能增强。

关键词: 聚合物泡沫材料, 双分布, 热性能, 有限元

Abstract: The influence of cell structure on the thermal properties of polymer foam with dual-distribution has been calculated by the finite element method. The change of material heat flux under different porosities is studied, and the relationship between the thermal conductivity and bubble distribution/porosity is obtained. The results show that the heat preservation performance of dual-distribution cell structure material is better than that of single-distribution cell structure material, especially when the porosity is between 30% and 70%. Secondly, with the increase of porosity and the proportion of large cell area, the thermal insulation performance of the material is enhanced. Finally, for the triple distribution cell structure material with the same porosity, with the increase of the proportion of big cell area, the thermal insulation performance of the material is enhanced.

Key words: Polymer foam, Dual-distribution, Thermal performance, Finite element method

中图分类号:

O642

张婷, 丁明明, 呼微, 石彤非. 双分布聚合物泡沫材料热性能的有限元计算[J]. 应用化学, 2021, 38(8): 961-968.

ZHANG Ting, DING Ming-Ming, HU Wei, SHI Tong-Fei. Thermal Performance of Polymer Foams with Dual-distributed Cells: A Finite Element Calculation[J]. Chinese Journal of Applied Chemistry, 2021, 38(8): 961-968.

参考文献

[1] WANG G, ZHAO J, WANG G, et al. Low-density and structure-tunable microcellular PMMA foams with improved thermal-insulation and compressive mechanical properties[J]. Eur Polym J, 2017, 95: 382-293.
[2] LIU S, DUVIGNEAU J, VANCSO G J. Nanocellular polymer foams as promising high performance thermal insulation materials[J]. Eur Polym J, 2015, 65: 33-45.
[3] SERGIO E, JOSIAS T M, SANTIAGO-CALVO M, et al. Rigid polyurethane foams with infused nanoclays: relationship between cellular structure and thermal conductivity[J]. Eur Polym J, 2016, 80: 1-15.
[4] KESHTKAR M, NOFAR M, PARK C B, et al. Extruded PLA/clay nanocomposite foams blown with supercritical CO₂[J]. Polymer, 2014, 55(16): 4077-4090.
[5] NOTARIO B, PINTO J, RODRIGUEZ-PEREZ M A. Towards a new generation of polymeric foams: PMMA nanocellular foams with enhanced physical properties[J]. Polymer, 2015, 63: 116-126.
[6] MILLER D, CHATCHAISUCHA P, KUMAR V. Microcellular and nanocellular solid-state polyetherimide (PEI) foams using sub-critical carbon dioxide I. Processing and structure[J]. Polymer, 2009, 50(23): 5576-5584.
[7] SUN X, KHARBAS H, PENG J, et al. A novel method of producing lightweight microcellular injection molded parts with improved ductility and toughness[J]. Polymer, 2015, 56: 102-110.
[8] NOTARIO B, PINTO J, RODRIGUEZ-PEREZ M A. Nanoporous polymeric materials: a new class of materials with enhanced properties[J]. Prog Mater Sci, 2016, 78/79: 93-139.
[9] BAO J B, LIU T, ZHAO L, et al. Oriented foaming of polystyrene with supercritical carbon dioxide for toughening[J]. Polymer, 2012, 53(25): 5982-5993.
[10] RIZVI A, TABATABAEI A, BARZEGARI M R, et al. In situ fibrillation of CO₂-philic polymers: sustainable route to polymer foams in a continuous process[J]. Polymer, 2013, 54(17): 4645-4652.
[11] FLOREN M, SPILIMBERGO S, MOTTA A, et al. Porous poly(D,L-lactic acid) foams with tunable structure and mechanical anisotropy prepared by supercritical carbon dioxide[J]. J Biomed Mater Res Part B, 2011, 99B(2): 338-349.
[12] MARCELO A, JOSE I V, VERA R, et al. Heat transfer in polypropylene-based foams produced using different foaming processes[J]. Adv Eng Mater, 2009, 11: 811-817.
[13] ZHAO J, WANG G, WANG C, et al. Ultra-lightweight, super thermal-insulation and strong PP/CNT microcellular foams[J]. Compos Sci Technol, 2020, 191: 108084.
[14] GONG P, WANG G, TRAN M P, et al. Advanced bimodal polystyrene/multi-walled carbon nanotube nanocomposite foams for thermal insulation[J]. Carbon, 2017, 120: 1-10.
[15] REGLERO R J A, VALLEJOS S, SANJUAN A M, et al. Microcellular polymeric foams based on 1-vinyl-2-pyrrolidone and butyl-acrylate with tuned thermal conductivity[J]. J Appl Polym Sci, 2018, 135(7): 45872.
[16] EUSEBIO S, RODRIGUEZ-PEREZ M A, JAINE L, et al. Influence of solid phase conductivity and cellular structure on the heat transfer mechanisms of cellular materials: diverse case studies[J]. Adv Eng Mater, 2009, 11(10): 818-824.
[17] FERKL P, TOULEC M, LAURINI E, et al. Multi-scale modelling of heat transfer in polyurethane foams[J]. Chem Eng Sci, 2017, 172: 323-334.
[18] NIKITSIN V I, ALSABRU A, KOFANOV V A, et al. A model of moist polymer foam and a scheme for the calculation of its thermal conductivity[J]. Energies, 2020, 13: 520.
[19] REGLERO R J A, SAIZ-ARROYO C, DUMON M, et al. Production, cellular structure and thermal conductivity of microcellular (methyl methacrylate) (butyl acrylate) (methyl methacrylate) triblock copolymers[J]. Polym Int, 2011.60(1): 146-152
[20] LIU S, DUVIGNEAU J, VANCSO G J. Nanocellular polymer foams as promising high performance thermal insulation materials[J]. Eur Polym J, 2015, 65: 33-45.
[21] LU X, CAPS R, FRICKE J, et al. Correlation between structure and thermal-conductivity of organic aerogels[J]. J Non Cryst Solids, 1995, 188(3): 226-234.
[22] NIELSEN L, EBERT H P, HEMBERGER F, et al. Thermal conductivity of nonporous polyurethane[J]. High Temp-High Press, 2000, 32(6): 701-707.
[23] CHERUKUPALLY P, ACOSTA E J, HINESTROZA J P, et al. Acid-base polymeric foams for the adsorption of micro-oil droplets from industrial effluents[J]. Environ Sci Technol, 2017, 51(15): 8552-8560.
[24] MIN K H, MIN H Z, SUN K J, et al. Fabrication and analysis of dual-scaled shape memory foam[J]. Eur Polym J, 2018, 106: 188-195.
[25] HAN Y L, LIN H, DING M M, et al. Flow-induced translocation of vesicles through narrow pore[J]. Soft Matter, 2019, 15(17): 3307-3314.
[26] HAN Y L, DING M M, LI R, et al. Kinematics of non-axially positioned vesicles through a pore[J]. Chinese J Polym Sci, 2020, 138: 776-783.
[27] WANG G, WANG C, ZHAO J, et al. Modelling of thermal transport through a nanocellular polymer foam: toward the generation of a new superinsulating material[J]. Nanoscale, 2017: 5996-6009.
[28] ADAMCZYK J, DYLEWSKI R. The impact of thermal insulation investments on sustainability in the construction sector[J]. Renew Sustainable Energy Rev, 2017, 80: 421-429.
[20] DEMORI R, BISCHOFF E, de AZEREDO A P, et al. Morphological, thermo-mechanical, and thermal conductivity properties of halloysite nanotube-filled polypropylene nanocomposite foam[J]. J Cell Plast, 2018, 54(2): 217-233.
[30] ANTUNES M, REALINHO V, JOSE I V, et al. Thermal conductivity anisotropy in polypropylene foams prepared by supercritical CO₂ dissolution[J]. Mater Chem Phys, 2012, 136(1): 268-276.
[31] CHARLENE F, CHAUMONT P, CASSAGNAU P, et al. Polymer nano-foams for insulating applications prepared from CO₂ foaming[J]. Prog Polym Sci, 2015, 41: 122-145.
[32] HOSSEINI S A, TAFRESHI H V. On the importance of fibers' cross-sectional shape for air filters operating in the slip flow regime[J]. Powder Technol, 2011. 212(3): 425-431.
[33] GLICKSMAN L R, SCHUETZ M, SINOFSKY M. Radiation heat transfer in foam insulation [J]. Int J Heat Mass Transf, 1987, 30(1): 187-197.
[34] HAN Z D, FINA A. Thermal conductivity of carbon nanotubes and their polymer nanocomposites: areview[J]. Prog Polym Sci, 2011, 36(7): 914-944.