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

CAS OpenIR > 中科院上海应用物理研究所2011-2020年

	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
Source Publication	INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
ISSN	0888-5885
Volume	57 Issue:5 Pages:1498-1505
Subtype	期刊论文
Abstract	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.
Keyword	Flexible Polyurethane Foams Continuous Extrusion Linear Polypropylene Compressed Co2 Behavior Absorption Crystallization Nanocomposites Performance Nanofibers
DOI	10.1021/acs.iecr.7b04644
Indexed By	SCI
Language	英语
WOS ID	WOS:000424851800018
Citation statistics
Document Type	期刊论文
Identifier	http://ir.sinap.ac.cn/handle/331007/29069
Collection	中科院上海应用物理研究所2011-2020年
Affiliation	1.Yang, CG 2.Xing, Z 3.Wang, MH 4.Zhao, Q 5.Wu, GZ
Recommended Citation 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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