Merits of the Addition of PTFE Micropowder in Supercritical Carbon Dioxide Foaming of Polypropylene: Ultrahigh Cell Density, High Tensile Strength, and Good Sound Insulation
Yang, CG; Xing, Z; Wang, MH; Zhao, Q; Wu, GZ
2018
发表期刊INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
ISSN0888-5885
卷号57期号:5页码:1498-1505
文章类型期刊论文
摘要Ultrahigh-cell-density polypropylene (PP) foam was prepared by supercritical carbon dioxide (scCO(2)) foaming in the presence of porous polytetrafluoroethylene (PTFE) micropowder. The voids of PTFE microparticles were filled with supercritical CO2, causing them to split into multiple granules due to the force of its expansion during the pressure release, resulting in the formation of a large number of nucleation sites. The cell density of this foam reached 10(10)-10(11) cells/cm(3), which was 2-5 orders of magnitude higher than pristine PP foam. We proposed that the nanoscale granules resulting from the splitting of PTFE microparticles, and the growth of nucleated small cells that generated the local strain field variation in the multiple-phase system, were responsible for the considerably increased nucleation number of PP foaming. Additionally, the tensile strength and sound absorption property of PP/PTFE foam were largely enhanced and the preparation of ultrahigh-cell-density PP/PTFE foam was easily controlled over a wider foaming temperature window.
关键词Flexible Polyurethane Foams Continuous Extrusion Linear Polypropylene Compressed Co2 Behavior Absorption Crystallization Nanocomposites Performance Nanofibers
DOI10.1021/acs.iecr.7b04644
收录类别SCI
语种英语
WOS记录号WOS:000424851800018
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/29069
专题中科院上海应用物理研究所2011-2018年
作者单位1.Yang, CG
2.Xing, Z
3.Wang, MH
4.Zhao, Q
5.Wu, GZ
推荐引用方式
GB/T 7714
Yang, CG,Xing, Z,Wang, MH,et al. Merits of the Addition of PTFE Micropowder in Supercritical Carbon Dioxide Foaming of Polypropylene: Ultrahigh Cell Density, High Tensile Strength, and Good Sound Insulation[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2018,57(5):1498-1505.
APA Yang, CG,Xing, Z,Wang, MH,Zhao, Q,&Wu, GZ.(2018).Merits of the Addition of PTFE Micropowder in Supercritical Carbon Dioxide Foaming of Polypropylene: Ultrahigh Cell Density, High Tensile Strength, and Good Sound Insulation.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,57(5),1498-1505.
MLA Yang, CG,et al."Merits of the Addition of PTFE Micropowder in Supercritical Carbon Dioxide Foaming of Polypropylene: Ultrahigh Cell Density, High Tensile Strength, and Good Sound Insulation".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 57.5(2018):1498-1505.
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