Preparation of PTFE Nanosphere with the Assistant of Modified Multi-Walled Carbon Nanotubes

Men, Xuehu; Zhang, Zhaozhu; Song, Haojie; Wang, Kun; Jiang, Wei

doi:10.1080/01932690701817891

Cited by 2 publications

(1 citation statement)

References 7 publications

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“…[18][19][20] To improve the mechanical properties and other functional properties of PTFE membranes, various kinds of fillers, such as silicon carbide, silicon dioxide (SiO 2 ), zinc oxide, multiwalled carbon nanotube (MWCNT), and carbon black (CB), have been incorporated in the PTFE matrix to form composite materials. 1,[21][22][23] PTFE composite materials are generally prepared by simple dry blending or coating fillers with PTFE. 24 However, such methods lead to inhomogeneous distribution of fillers within PTFE and causes undesirable effect on the properties of PTFE composite membranes.…”

Section: Introductionmentioning

confidence: 99%

Polytetrafluoroethylene (PTFE)/carbon black (CB) microporous membranes produced from PTFE/CB composite particles prepared by heterocoagulation process

Zhang

Liu

et al. 2016

High Performance Polymers

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Polytetrafluoroethylene (PTFE)/carbon black (CB) microporous membranes with excellent properties were successfully prepared via heterocoagulation process and mechanical stretching method. Heterocoagulation was achieved using PTFE emulsion with 26% solid content, an intermediate product of the commercial PTFE dispersions with 60% solid content, and CB dispersions to prepare PTFE/CB composite particles by mechanical stirring, which is the unique content in this article. Furthermore, in order to obtain uniform distribution of CB particles within the membrane matrix as well as improve color uniformity and mechanical strength of the microporous membranes, CB was pretreated by a titanate coupling agent (NDZ-201). The PTFE/CB composite particles were then used to prepare the PTFE/CB microporous membranes via mechanical stretching operation. Several important properties of the prepared PTFE/CB microporous membranes, such as tensile strength, porosity, contact angles, morphology, and dynamic mechanical properties, were investigated. Results showed that the fabricated PTFE/CB microporous membranes possessed color uniformity, high tensile strength, and high hydrophobicity.

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