Merits of the Addition of PTFE Micropowder in Supercritical Carbon Dioxide Foaming of Polypropylene: Ultrahigh Cell Density, High Tensile Strength, and Good Sound Insulation

doi:10.1021/acs.iecr.7b04644

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	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
刊名	INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
	2018
卷号	57 期号:5 页码:1498-1505
关键词	Flexible Polyurethane Foams Continuous Extrusion Linear Polypropylene Compressed Co2 Behavior Absorption Crystallization Nanocomposites Performance Nanofibers
ISSN号	0888-5885
DOI	10.1021/acs.iecr.7b04644
文献子类	期刊论文
英文摘要	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.
语种	英语
WOS记录号	WOS:000424851800018
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/29069]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017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.