In order to study the preparation and properties of self-healing graphene quantum dots/polyurethane transparent composite film,a one-step method was used to prepare transparent polyurethane film (PU-DA) with thermal reversibility.The amino-modified graphene quantum dots (NH2-GQDs) were added through physical blenging,and the transparent self-healing graphene quantum dot/polyurethane composite film (NH2-GQDs/PU-DA) with fluorescence was finally prepared.Fourier infrared spectrometer (FT-IR),polarizing microscope and universal tension machine were used to analyze the structure and performance.The results showed that,with the introduction of Diels-Alder bond,the polyurethane films had self-healing properties at a certain temperature and still maintained good flexibility,and the optimal tensile strength and elongation at break reached 1.437MPa and 117.4%,respectively.The stress-strain test results showed that the addition of NH2-GQDs improved the mechanical properties of the polyurethane film to a certain extent,and increased the hydrophobicity of the polyurethane film.
[1] 索习东,白子文.影响热塑性聚氨酯弹性体性能的因素浅析[J].聚氨酯工业,2013,28(6):38-40.
[2] Zhang Y S,Khademhosseini A.Advances in engineering hydrogels[J].Science,2017,356(6337):500.
[3] Zhang Q,Liu L B,Pan C Q,et al.Review of recent achievements in self-healing conductive materials and their applications[J].Journal of Materials Science,2018,53(1):27-46.
[4] 王明存,朱海荣.高分子材料自修复机理的研究进展[J].材料导报,2012,26(11):89-95.
[5] Tyliszczak B,Drabczyk A,Kudłacik-Kramarczyk S.Smart,self-repair polymers based on acryloyl-6-aminocaproic acid and modified with magnetic nanoparticles preparation and characterization[J].International Journal of Polymer Analysis and Characterization,2018,23(3):226-235.
[6] Yang Y L,Lu X,Wang W W.A tough polyurethane elastomer with self-healing ability[J].Materials & Design,2017,127:30-36.
[7] Patrick J F,Robb M J,Sottos N R,et al.Polymers with autonomous lifecycle control[J].Nature,2016,540:363-370.
[8] White S R,Sottos N R,Geubelle P H,et al.Autonomic healing of polymer composites[J].Nature,2001,409(415):794-797.
[9] 黄晓文,张士玉,赵凯锋,等.含双硫键的自修复交联聚氨酯弹性体的合成与性能[J].高分子通报,2018(5):67-72.
[10] 魏燕彦,白亚朋.酰腙键聚氨酯凝胶的合成及自修复性能[J].高分子材料科学与工程,2017,33(11):44-45.
[11] Wang Y,Liu Q,Li J H,et al.UV-triggered self-healing polyurethane with enhanced stretchability and elasticity[J].Polymer,2019,172:187-192.
[12] 杜秀才.基于Diels-Alder反应的交联聚氨酯的制备与自修复性能的研究[D].青岛:青岛科技大学,2016.
[13] Gui Z K,Hui F X,Ru P R,et al.Preparation and performance of porous phase change polyethylene glycol/polyurethane membrane[J].Energy Conversion & Management,2010,51(11):2294-2298.
[14] Liu X,Du P,Liu L,et al.Kinetic study of Diels-Alder reaction involving in maleimide-furan compounds and linear polyurethane[J].Polymer Bulletin,2013,70(8):2319-2335.
[15] Ettefaghi E,Ghobadian B,Rashidi A,et al.Preparation and investigation of the heat transfer properties of a novel nanofluid based on graphene quantum dots[J].Energy Conversion and Management,2017,153:215-223.
[16] 张士玉.交联型聚氨酯的合成及其室温自修复性能的研究[D].青岛:青岛科技大学,2017.
[17] 于正洋,冯利邦,柴昌盛,等.基于Diels-Alder反应的自修复聚氨酯的结构与修复行为[J].高分子学报,2016(11):1579-1586.
[18] 李志鹏.含长悬挂链聚氨酯弹性体的制备与结构、性能研究[D].广州:华南理工大学,2016.
PDF
