文章摘要
氧化石墨烯/梳状有机硅改性水性聚氨酯复合材料的制备与性能
Synthesis and Properties of Graphene Oxide/ Comb-like Silicone Modified Waterborne Polyurethane Composites
投稿时间:2019-06-17  修订日期:2019-07-10
DOI:
中文关键词: 水性聚氨酯  硅油  复合材料  富集率  疏水性  抗紫外性。
英文关键词: Waterborne polyurethane  silicone oil  composites  enrichment  hydrophobicity  anti-UV.
基金项目:国家高技术研究发展计划(863计划)
作者单位E-mail
张铭芮 陕西科技大学 583671779@qq.com 
马兴元 陕西科技大学 maleather@163.com 
贺莹花 陕西科技大学  
刘帅 陕西科技大学  
吴晓珍 陕西科技大学  
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中文摘要:
      以异佛尔酮二异氰酸酯(IPDI)、聚醚多元醇(PTMG2000),双尾型羟基硅油(DSE),2,2-二羟甲基丙酸(DMPA)、1,4-丁二醇(BDO)为主要原料,先采用预聚体分散法制备梳状有机硅改性水性聚氨酯(DSE-WPU),再通过物理共混氧化石墨烯(GO)浆体制备了高强度多功能性水性聚氨酯纳米复合材料(GO-DSE-WPU),并研究了其结构与性能的关系。力学性能分析表明,GO和DSE的加入可以有效地提高GO-DSE-WPU成膜的力学性能;视频光学接触角分析表明,随着GO含量的增加,GO-DSE-WPU成膜的疏水性能呈现一个先上升后下降的趋势,疏水性在总体上有了大幅度地提升;AFM谱图分析从内部结构上解释了GO-DSE-WPU疏水性提升的原因;通过SEM断面线扫能谱图中可明显看出,GO-DSE-WPU成膜表面硅的富集率可提升100%;抗紫外分析表明,即使加入少量GO,GO-DSE-WPU成膜的紫外吸收速率也有显著提高,紫外透过率显著降低。热性能分析表明,GO-DSE-WPU的三个热降解温度均较DSE-WPU有所改善,热性能提升。因此,通过此方法可制备得到一种高强度多功能性水性聚氨酯纳米复合材料,在功能性涂层、材料表面处理和膜材料方面具有广泛的应用前景。
英文摘要:
      The 3-isocyanatemethylene-3,5,5-trimethylcyclohexyl isocyanate (IPDI), Polytetrahydrofuran (PTMG2000), Double-tailed hydroxy silicone oil (DSE), 2,2-dihydroxymethyl propionic acid (DMPA) and 1,4-butanediol (BDO) were used as the main raw materials, comb-like organic silicon modified waterborne polyurethane (DSE-WPU) was prepared by prepolymer dispersion method, and then high-strength multifunctional nanocomposite (GO-DSE-WPU) was prepared by adding graphene oxide (GO) slurry, and the relationship between its structure and properties was studied. Mechanical properties analysis showed that the addition of GO and DSE can effectively improve the mechanical properties of GO-DSE-WPU film. Video optical contact Angle analysis shows that, with the increase of GO content, the hydrophobic performance of GO-DSE-WPU film presents a trend of first rising and then declining, and hydrophobicity has improved significantly overall. AFM spectrum analysis explained the reason of the improvement of the hydrophobicity of GO-DSE-WPU from the internal structure. It can be clearly seen from SEM cross-section line sweep energy spectrum that the enrichment rate of silicon on the film-forming surface of GO-DSE-WPU can be increased by 100%. Anti-UV analysis showed that even if a small amount of GO was added, the UV absorption rate of GO-DSE-WPU film was significantly increased and the UV transmittance was significantly reduced. The thermal performance analysis showed that the three thermal degradation temperatures of GO-DSE-WPU were improved compared with that of DSE-WPU, and the thermal performance was improved. Therefore, a multifunctional waterborne polyurethane nanocomposite with high strength can be prepared by this method, which has a wide application prospect in functional coating, surface treatment and film materials.
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