聚四氟乙烯分散液稳定性研究进展

doi:10.3969/j.issn.1001-1803.2021.05.014

摘要/Abstract

摘要：

聚四氟乙烯因其高稳定性、低摩擦系数及优异的介电性能等独特性质,在各行业的应用越来越广泛。高浓度高稳定性的聚四氟乙烯分散液是制备相关成型产品和添加剂的重要原料。首先介绍了聚四氟乙烯分散液的制备方法,随后聚焦于分散液稳定性的评价方法,详细介绍了近年发展的静态多重光散射技术表征聚四氟乙烯分散液稳定性的方法。该方法不仅可以获得聚四氟乙烯分散液的稳定性信息,还可以定量分析体系的不稳定现象和原因,例如上浮、沉淀、絮凝、聚并等。此外,还对聚四氟乙烯浓缩分散液的稳定机理进行了综述,对目前浓缩分散液的稳定性研究进展进行了总结与归纳,并对该领域的发展趋势进行了展望。

关键词: 聚四氟乙烯, 分散液, 表面活性剂, 吸附, 稳定性

Abstract:

Owing to the extraordinary properties including high stability, low friction coefficient and large dielectric strength, polytetrafluoroethylene （PTFE） has been used more and more widely in various industries. Highly stable and concentrated PTFE dispersion is the important raw material used to prepare corresponding final products and additives. The preparation of PTFE dispersions was summarized, and then the assessment methods of their stability were introduced. The method based on multiple light scattering technology developed recently was introduced in detail. This method could not only obtain the stability information of PTFE dispersions, but also quantitatively analyze the instability phenomena and causes of the systems, such as floating, precipitation, flocculation, coalescence and so on. In addition, the stabilization mechanism of PTFE concentrated dispersions was reviewed. The research progress in the stability thereof in recent years was summarized, and the development trend of this field was prospected.

Key words: polytetrafluoroethylene, dispersion, surfactant, adsorption, stability

中图分类号:

TQ322

陈越,殷鸿尧,隋晓媛,冯玉军. 聚四氟乙烯分散液稳定性研究进展[J]. 日用化学工业, 2021, 51(5): 457-462.

CHEN Yue,YIN Hong-yao,SUI Xiao-yuan,FENG Yu-jun. Progress in research of the stability of polytetrafluoroethylene dispersion[J]. China Surfactant Detergent & Cosmetics, 2021, 51(5): 457-462.

图/表 5

图 1

图 2

图 3

图 4

图 5

参考文献 49

[1]	Puts G J, Crouse P, Ameduri B M. Polytetrafluoroethylene: synjournal and characterization of the original extreme polymer[J]. Chemical Review, 2019,119(3): 1763-1805. doi: 10.1021/acs.chemrev.8b00458
[2]	Dhanumalayan E, Joshi G M. Performance properties and applications of polytetrafluoroethylene (PTFE): a review[J]. Advanced Composites and Hybrid Materials, 2018,1(2): 247-268. doi: 10.1007/s42114-018-0023-8
[3]	Sperati C A, Starkweather H W. Fluorine-containing polymers. II. Polytetrafluoroethylene[M]. Berlin: Springer, 1961.
[4]	Kumar Dubey M, Bijwe J, Ramakumar S S V. PTFE based nano-lubricants[J]. Wear, 2013,306(1): 80-88. doi: 10.1016/j.wear.2013.06.020
[5]	Feng S, Zhong Z, Wang Y, et al. Progress and perspectives in PTFE membrane: Preparation, modification, and applications[J]. Journal of Membrane Science, 2018,549:332-349. doi: 10.1016/j.memsci.2017.12.032
[6]	Peng S, Zhang L, Xie G, et al. Friction and wear behavior of PTFE coatings modified with poly (methyl methacrylate)[J]. Composites Part B: Engineering, 2019,172:316-322. doi: 10.1016/j.compositesb.2019.04.047
[7]	Wang N, Wang H, Ren J, et al. Coating of polytetrafluoroethylene/polyacrylate: Core-shelled structure and tribological behaviors[J]. Journal of Applied Polymer Science, 2019,136(29): 47774. doi: 10.1002/app.v136.29
[8]	Alawajji R A, Kannarpady G K, Biris A S. Fabrication of transparent superhydrophobic polytetrafluoroethylene coating[J]. Applied Surface Science, 2018,444, 208-215. doi: 10.1016/j.apsusc.2018.02.206
[9]	Mamoeni L. Containers or accessories specially adapted for handling toilet or cosmetic powder: CN 1231164C [P]. 2005-12-14.
[10]	Cavanaugh R J, Jones C W, Konabe K, et al. Concentrated fluoropolymer dispersions: US6956078B2 [P]. 2005-10-18.
[11]	Dadalas M C, Hintzer K, Loehr G, et al. Aqueous dispersions of polytetrafluoroethylene particles: US7342066B2 [P]. 2008-03-11.
[12]	Hoshikawa J, Kobayashi S. Aqueous polytetrafluoroethylene dispersion composition: EP1059333B1 [P]. 2006-11-10.
[13]	Kim C U, Lee J M, Ihm S K. Emulsion polymerization of tetrafluoroethylene: effects of reaction conditions on particle formation[J]. Journal of Fluorine Chemistry, 1999,96(1): 11-21. doi: 10.1016/S0022-1139(98)00328-5
[14]	Kim C U, Lee J M, Ihm S K. Emulsion polymerization of tetrafluoroethylene: effects of reaction conditions on the polymerization rate and polymer molecular weight[J]. Journal of Applied Polymer Science, 1999,73(5): 777-793. doi: 10.1002/(ISSN)1097-4628
[15]	Su J, Wu G, Liu Y, et al. Study on polytetrafluoroethylene aqueous dispersion irradiated by gamma ray[J]. Journal of Fluorine Chemistry, 2006,127(1): 91-96. doi: 10.1016/j.jfluchem.2005.10.005
[16]	Chen Xinkang, Duan Zhongmian. Some test methods to characterize the intrinsic properties of polytetrafluoroethylene[J]. Organo Fluorine Industry, 1989 (3): 31-38.
[17]	Zipplies T, Hintzer K, Dadalas M C, et al. Aqueous dispersions of polytetrafluoroethylene having a low amount of fluorinated surfactant: US7041728B2 [P]. 2006-05-09.
[18]	Nakatani Y, Miura T, Sawada Y, et al. Polytetrafluoroethylene aqueous dispersion composition, polytetrafluoroethylene resin film and polytetrafluoroethylene resin impregnated article: US8105694B2 [P]. 2012-01-31.
[19]	Shah V, Bharatiya B, Shukla A D, et al. Adsorption of nonionic Brij and Tween surfactants at PTFE-water and air-water interfaces: Investigations on wetting, dispersion stability, foaming and drug solubilization[J]. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2016,508:159-166. doi: 10.1016/j.colsurfa.2016.08.057
[20]	Sharma M, Bharatiya B, Mehta K, et al. Novel strategy involving surfactant-polymer combinations for enhanced stability of aqueous teflon dispersions[J]. Langmuir, 2014,30(24): 7077-7084. doi: 10.1021/la5012605
[21]	Bai L, Chen Y, Yin H, et al. Insights into the stability of polytetrafluoroethylene aqueous dispersion: Role of surfactant[J]. Journal of Molecular Liquids, 2020,113662.
[22]	Chinese Society of Particuology. Particulate technology-Dispersion stability analysis-Static Multiple Light Scattering: T/CSP 6-2019[S]. Beijing: Chinese Society of Particuology, 2019.
[23]	Sun Y, Deac A, Zhang G G Z. Assessing physical stability of colloidal dispersions using a Turbiscan optical analyzer[J]. Molecular Pharmaceutics, 2019,16(2): 877-885. doi: 10.1021/acs.molpharmaceut.8b01194
[24]	Kang W, Guo L, Fan H, et al. Flocculation, coalescence and migration of dispersed phase droplets and oil-water separation in heavy oil emulsion[J]. Journal of Petroleum Science and Engineering, 2012,81:177-181. doi: 10.1016/j.petrol.2011.12.011
[25]	Azema N. Sedimentation behaviour study by three optical methods-granulometric and electrophoresis measurements, dispersion optical analyser[J]. Powder Technology, 2006,165(3): 133-139. doi: 10.1016/j.powtec.2005.10.015
[26]	Zhang Qiang, Chen Ying, Fu Wenjing, et al. Study on the stability of pesticide WDG suspension by TURBISCAN LAB[J]. Spectroscopy and Spectral Analysis, 2008,28(4): 843-846. pmid: 18619312
[27]	Ren Y, Zheng J, Xu Z, et al. Application of Turbiscan LAB to study the influence of lignite on the static stability of PCLWS[J]. Fuel, 2018,214:446-456. doi: 10.1016/j.fuel.2017.08.026
[28]	Mengual O, Meunier G, Cayre I, et al. TURBISCAN MA 2000: multiple light scattering measurement for concentrated emulsion and suspension instability analysis[J]. Talanta, 1999,50(2): 445-456. pmid: 18967735
[29]	Mengual O, Meunier G, Cayre I, et al. Characterisation of instability of concentrated dispersions by a new optical analyser: the TURBISCAN MA 1000[J]. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 1999,152(1): 111-123. doi: 10.1016/S0927-7757(98)00680-3
[30]	Liu J, Huang X F, Lu L J, et al. Turbiscan Lab^® Expert analysis of the biological demulsification of a water-in-oil emulsion by two biodemulsifiers[J]. Journal of Hazardous Materials, 2011,190(1): 214-221. doi: 10.1016/j.jhazmat.2011.03.028
[31]	Lemarchand C, Couvreur P, Vauthier C, et al. Study of emulsion stabilization by graft copolymers using the optical analyzer Turbiscan[J]. International Journal of Pharmaceutics, 2003,254(1): 77-82. doi: 10.1016/S0378-5173(02)00687-7
[32]	Kaombe D D, Lenes M, Toven K, et al. Turbiscan as a tool for studying the phase separation tendency of pyrolysis oil[J]. Energ Fuel, 2013,27(3): 1446-1452. doi: 10.1021/ef302121r
[33]	Chai Z, Zeng M, Ren Y, et al. Prediction method on the static stability of a coal water mixture[J]. Energ Fuel, 2019,33(5): 3998-4008. doi: 10.1021/acs.energyfuels.9b00082
[34]	Celia C, Trapasso E, Cosco D, et al. Turbiscan Lab^® Expert analysis of the stability of ethosomes^® and ultradeformable liposomes containing a bilayer fluidizing agent pyrolysis oil[J]. Colloids and Surfaces B: Biointerfaces, 2009,72(1): 155-160. doi: 10.1016/j.colsurfb.2009.03.007
[35]	Hoshikawa J, Higuchi S, Matsuoka Y. Aqueous dispersion of polytetrafluoroethylene and process for its production: US7514484B2[P]. 2009-04-07.
[36]	Coates M, Demonde W, Davidson K. High stability polytetrafluoroethylene dispersions and method for obtaining same: US2005/0096425A1[P]. 2005-05-05.
[37]	Li Xiaohe, Feng Ping, He Yuehui. Probe into dispersion of nano size powder in water[J]. Nanoscience＆Nanotechnology, 2007,4(1): 17-21.
[38]	Derjaguin B, Landau L D. Theory of the stability of strongly charged lyophobic sols and of the adhesion of strongly charged particles in solutions of electrolytes[J]. Acta Physicochimica U.R.S.S., 1941,14:633-662.
[39]	Verwey E J W. Theory of the stability of lyophobic colloids[J]. The Journal of Physical and Colloid Chemistry, 1947,51(3): 631-636. doi: 10.1021/j150453a001
[40]	Sutterby J L. Falling sphere viscometry. I. Wall and inertial corrections to Stokes’Law in Long Tubes[J]. Transactions of the Society of Rheology, 1973,17(4): 559-573. doi: 10.1122/1.549308
[41]	Schmidt J R, Skinner J L. Hydrodynamic boundary conditions, the Stokes-Einstein law, and long-time tails in the Brownian limit[J]. The Journal of Chemical Physics, 2003,119(15): 8062-8068. doi: 10.1063/1.1610442
[42]	Juzaemon H. Stabilized, concentrated polytetrafluoroethylene dispersions containing non-ionic surfactants: US3301807[P]. 1967-01-31.
[43]	Zhang Junjie, Xiang dongmei, Xu wanxin, et al. A method for improving the viscosity of PTFE dispersed emulsion: CN104371045A [P]. 2015-02-25.
[44]	Chaudhuri R G, Sunayana S, Paria S. Wettability of a PTFE surface by cationic-non-ionic surfactant mixtures in the presence of electrolytes[J]. Soft Matter, 2012,8(20): 5429-5433. doi: 10.1039/c2sm25309g
[45]	Hoshikawa J, Higuchi S, Matsuoka Y. et al. Polytetrafluoroethylene aqueous dispersion and its product: US7709566B2[P]. 2010-05-04.
[46]	Dadalas M C, Harvey L W, Fluoropolymer dispersion containing no or little low molecular weight fluorinated surfactant: US6861466B2[P]. 2005-03-01.
[47]	Li Hui, Zeng Hongyan, Xing Zhe, et al. Preparation of high hydrophilic PTFE powder and its dispersion stability[J]. Acta Polymerica Sinica, 2016 (9): 1247-1253.
[48]	Cui X, Zhong S, Xu J. et al. Synjournal of polytetrafluoroethylene/polyacrylate core-shell nanoparticles via emulsifier-free seeded emulsion polymerization[J]. Colloid and Polymer Science, 2007,285(8): 935-940. doi: 10.1007/s00396-007-1651-7
[49]	Yang C, Xu L, Zeng H, et al. Water dispersible polytetrafluoroethylene microparticles prepared by grafting of poly(acrylic acid)[J]. Radiation Physics and Chemistry, 2014,103:103-107. doi: 10.1016/j.radphyschem.2014.05.051