Waterborne polyurethanes (WPUs) are prepared with poly (1,4-butanediol adipate)diol (PBA,Mn=2 000) as soft segments and hydroquinone dihydroxyethyl ether (HQEE) as chain extender. The effect of the HQEE contents on the properties of waterborne polyurethanes are investigated. The morphology of the emulsion is characterized by laser scattering particle size analyzer. The structure of the films is characterized by Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD). The thermal and mechanical properties of the films are studied by the differential scanning calorimetry (DSC), thermal gravimetric analysis (TGA)and electronic tensile testing. The results show that the content of HQEE results in the decrease of crystallinity of WPUs. Moreover, the average particle size of the emulsion first increases and then decreases, and the water resistance of the film decreases, and the heat resistance of the film increases and the tensile strength of the film also increases first and then decreases. The results indicate that the tensile strength of the film reaches up to a maximum value of 29.9 MPa when the HQEE content is 6.93%.
WANG Meng-Meng
,
HU Ge-Wen
. Effect of Hydroquinone Dihydroxyethyl Ether on Properties of Waterborne Polyurethane[J]. Paint & Coatings Industry, 2019
, 49(3)
: 42
-47
.
DOI: 10.12020/j.issn.0253-4312.2019.3.42
[1]罗珍, 陶灿, 韩曦曦, 等.水量对水性聚氨酯聚集形态及粘接性能的影响[J].高校化学工程学报, 2017, 31(3):641-649
[2]CHATTOPADHYAY D K, RAJU K.Structural engineering of polyurethane coatings for high performance applications[J].Progress in Polymer Science, 2007, 32(3):352-418
[3]ZHANG Y, SHAO L, DONG D, et al.Enhancement of water and organic solvent resistances of a waterborne polyurethane film by incorporating liquid polysulfide[J].RSC Advances, 2016, 6(21):17163-17171
[4]HE Y, XIE D, ZHANG X.The structure,microphase-separated morphology,and property of polyurethanes and polyureas[J].Journal of materials science, 2014, 49(21):7339-7352
[5]OPREA S.Novel quinoline- based polyurethane elastomersThe effect of the hard segment structure in properties enhancement[J].Journal of Polymer Research, 2012, 19(1):9767-
[6]OPREA S.Molecular dynamics,thermo-mechanical and optical studies on benzidine chain extended polyurethaneurea[J].Journal of Polymer Research, 2011, 18(6):1777-1785
[7]赵雨花, 亢茂青, 殷宁, 等.扩链的浇注型聚氨酯弹性体合成和性能[J].化学推进剂与高分子材料, 2018, 16(3):45-50
[8]ZHA L, WU M, YANG J.Hydrogen bonding and morphological structure of segmented polyurethanes based on hydroquinone–bis (β-hydroxyethy) ether as a chain extender[J].Journal of applied polymer science, 1999, 73(14):2895-2902
[9]蒋海, 杨序平, 杨文彬, 等.扩链聚氨酯弹性体的形态结构及动态流变行为[J].含能材料, 2012, 20(3):319-323
[10]CHANG Z, ZHANG M, HUDSON A G, et al.Synthesis and properties of segmented polyurethanes with triptyceneunits in the hard segment[J].Polymer, 2013, 54(26):6910-6917
[11]夏会华.水性聚氨酯性能的影响因素［D］.合肥：安徽大学, 2013.
[12]夏会华, 饶舟, 卢敏, 等.交联剂种类对水性聚氨酯性能的影响[J].聚氨酯, 2012, (9):72-75
[13]GAMAL R SAAD, HARTMUT SELIGER.Biodegradable copolymers based on bacterial poly((R)-3-hydroxybutyrate): thermal and mechanical properties and biodegradation behaviour[J].Polymer Degradation and Stability, 2004, 83(1):101-110
[14]韩飞龙, 陶灿, 王若鹏, 等.端羟基聚丁二烯丙烯腈改性水性聚氨酯的制备及性能[J].精细化工, 2015, 32(6):606-610
[15]MONDAL S, HU J L.Structural characterization and mass transfer properties of dense segmented polyurethane membrane: Influence of hard segment and soft segment crystal melting temperature[J].Polymer Engineering & Science, 2008, 48(2):233-239
[16]ASIF A, HU L, SHI W.Synthesis,rheological,and thermal properties of waterborne hyperbranched polyurethane acrylate dispersions for UV curable coatings[J].Colloid and Polymer Science, 2009, 287(9):1041-1049
