优化马来酸二乙酯改性己二胺反应条件,并与异氰酸酯丙烯酸乙酯(AOI)反应,制备了含端双键的一元胺,采用异佛尔酮二异氰酸酯(IPDI)、聚醚胺(PEA,数均分子量Mn约2000)、改性己二胺、二乙基甲苯二胺(DETDA)、乙二胺基乙磺酸钠盐(AAS盐)为主要原料,制备了一系列水性光固化聚脲。采用红外光谱(FT-IR)、核磁氢谱(1H-NMR)对合成树脂的结构进行了表征探究,采用纳米粒径分析仪、紫外分光光度计、光学接触角测量仪、热重分析仪等手段对乳液和涂膜进行一系列测试表征。结果表明:制备了水性光固化聚脲树脂,其中脂肪族聚脲树脂体系的乳液以及热稳定性更好,芳香族聚脲树脂体系的基本性能更好。
Monoamine with terminal double bonds was prepared by optimizing the reaction conditions of hexanediamine modified by diethyl maleate and reacting with ethyl isocyanate acrylate (AOI).A series of waterborne light-cured polyureas were obtained by using isophorone diisocyanate (IPDI),polyetheramine (PEA,Mn～2000),modified hexanediamine,diethyltoluene diamine (DETDA) and sodium ethylenediamine sulfonate (AAS salt) as main raw materials.The structure of the synthesized resins was characterized by FT-IR and 1H-NMR.The emulsion and coating film were tested by nano-particle size analyzer,UV spectrophotometer,optical contact angle meter and thermogravimetric analyzer.The results showed that the waterborne light-cured polyurea resins were successfully prepared,and the aliphatic polyurea resin system had better emulsion and thermal stability,while aromatic polyurea resin system had better basic properties.
[1] 罗学禹,刘立柱.防水用聚脲绝缘涂料的制备及性能研究[J].材料导报,2018,32(16):2723-2727.
[2] Moore J P,Shunmaker J A,Houtz M D,et al.Thermal and optical properties of novel polyurea/silica organic-inorganic hybrid materials[J].Journal of Sol-Gel Science and Technology,2012,63(1):168-176.
[3] Hashimoto M,Imoto H,Matsukawa K,et al.Coexistence of optical transparency,hydrophobicity,and high thermal conductivity in beads-on-string-shaped polyureas induced by disordered hydrogen-bond networks[J].Macromolecules,2020,53(8):2874-2881.
[4] Yoo S,Kim D G,Ha T,et al.Solution-processable,thin,and high-κ dielectric polyurea gate insulator with strong hydrogen bonding for low-voltage organic thin-film transistors[J].ACS Applied Materials & Interfaces,2018,10(38):32462-32470.
[5] Yu B,Luo Y,Coong H,et al.Preparation of crosslinked porous polyurea microspheres in one-step precipitation polymerization and its application for water treatment[J].RSC Advances,2016,6(113):111806-111811.
[6] Wei Y,Jiang X,Li S,et al.Catalysis of isocyanate reaction with water by DMF and its use for fast preparation of uniform polyurea microspheres through precipitation polymerization[J].European Polymer Journal,2019,115:384-390.
[7] Tatiya P D,Hedaoo R K,Mahulikar P P,et al.Novel polyurea microcapsules using dendritic functional monomer:synthesis,characterization,and its use in self-healing and anticorrosive polyurethane coatings[J].Industrial & Engineering Chemistry Research,2013,52(4):1562-1570.
[8] Chen K Y,Lai Y S,You J K,et al.Effective anticorrosion coatings prepared from sulfonated electroactive polyurea[J].Polymer,2019,166:98-107.
[9] Qian Y,Zhou Y,Li L,et al.Facile preparation of active lignin capsules for developing self-healing and UV-blocking polyurea coatings[J].Progress in Organic Coatings,2020,138:105354.
[10] Cao H,Li B,Jiang X,et al.Fluorescent linear polyurea based on toluene diisocyanate:easy preparation,broad emission and potential applications[J].Chemical Engineering Journal,2020,399:125867.
[11] Toader G,Rusen E,Teodorescu M,et al.Novel polyurea polymers with enhanced mechanical properties[J].Journal of Applied Polymer Science,2016,133(38):43967.
[12] Gu M,Ling X D,Yu A F,et al.Experimental study of polyurea-coated fiber-reinforced cement boards under gas explosions[J].Defence Technology,2021,DOI:10.1016/j.dt.2021.12.011.
[13] Zhang T,Cai W,Chu F,et al.Hydroxyapatite/polyurea nanocomposite:preparation and multiple performance enhancements[J].Composites Part A:Applied Science and Manufacturing,2020,128:105681.
[14] Dispinar T,Colard C A L,Du Prez F E.Polyurea microcapsules with a photocleavable shell:UV-triggered release[J].Polymer Chemistry,2013,4(3):763-772.
[15] 史锋.聚天冬氨酸酯聚脲涂层的制备及抗空蚀性能的研究[D].北京:机械科学研究总院,2011.
[16] 鲍俊杰,许戈文,刘都宝,等.水性聚脲的合成与结构表征[J].中国涂料,2009,24(7):21-23.
[17] 鲍俊杰,许戈文,刘都宝,等.水性聚脲的合成与性能研究[J].化学建材,2009,25(5):13-15.
[18] Ma S,Van Heeswijk E P A,Noordover B A J,et al.Isocyanate-free approach to water-borne polyurea dispersions and coatings[J].ChemSusChem,2018,11(1):149-158.
[19] Lin P,Meng L,Huang Y,et al.Synthesis of porous polyurea monoliths assisted by centrifugation as adsorbents for water purification[J].Colloids and Surfaces A:Physicochemical and Engineering Aspects,2016,506:87-95.
[20] Park H M,Ismael M,Takaba H,et al.Acid-resistant thin-film composite nanofiltration membrane prepared from polyamide-polyurea and the behavior of density functional theory study[J].Journal of Membrane Science,2021,DOI:10.1016/j.memsci.2021.120175.
PDF
