通过非共价键改性的方法,将单宁酸(TA)包覆在石墨表面,从而改善石墨(Gr)与聚酰亚胺(PI)基体的界面相容性,并考察单宁酸修饰前后的石墨对PI基复合材料摩擦学性能的影响。结果表明:采用TA对Gr进行非共价修饰可以提高Gr与PI基体中的相容性和界面结合强度,进而提高复合材料的耐热性能和摩擦学性能,当复合体系中TA@Gr质量分数为15%时,材料的摩擦系数达到0.206,磨损率为3.71×10-14m3/(N·m),分别比纯PI降低了21.4%和62.8%,分别比PI/Gr复合材料降低了6.36%和14.7%。
Tannic acid (TA) was coated on the surface of graphite by non-covalent bond modification to improve the interfacial compatibility between graphite (Gr) and polyimide (PI) matrix.The effects of graphite before and after tannic acid modification on the tribological properties of PI-based composites were investigated.The results showed that the non-covalent modification of Gr with TA could improve the compatibility and interfacial bonding strength between Gr and PI matrix,and further enhance the heat resistance and tribological properties of the composite.When the mass fraction of TA@Gr was 15%,the friction coefficient of the material reached 0.206,and the wear rate was 3.71×10-14m3/(N·m),which was 21.4% and 62.8% lower than that of pure PI,and 6.36% and 14.7% lower than that of PI/Gr composite,respectively.
[1] Wu X,Zhang Y,Du P,et al.Synthesis,characterization and properties of graphene-reinforced polyimide coatings[J].New Journal of Chemistry,2019,43(15):5697-5705.
[2] 胡超.聚酰亚胺与其复合材料的制备及摩擦学性能研究[D].绵阳:西南科技大学,2021.
[3] Chen B,Li X,Jia Y,et al.MoS2 nanosheets-decorated carbon fiber hybrid for improving the friction and wear properties of polyimide composite[J].Composites Part A:Applied Science and Manufacturing,2018,109:232-238.
[4] Song J,Yu Y,Zhao G,et al.Improved tribological properties of polyimide composites by micro-nano reinforcement[J].Journal of Applied Polymer Science,2019,136(35):47900.
[5] Zhang Y,Yan H,Xu P,et al.A novel POSS-containing polyimide:synthesis and its composite coating with graphene-like MoS2 for outstanding tribological performance[J].Progress in Organic Coatings,2021,151:106013.
[6] Hao Y,Zhou X,Shao J,et al.The influence of multiple fillers on friction and wear behavior of epoxy composite coatings[J].Surface and Coatings Technology,2019,362:213-219.
[7] 杨涛,张朋,王云飞,等.石墨填料对聚酰亚胺复合材料性能影响[J].科技创新导报,2019,16(1):65-68.
[8] Wan C,Yao C,Li J,et al.Friction and wear behavior of polyimide matrix composites filled with nanographite[J].Journal of Applied Polymer Science,2022,139(18):52058.
[9] 蔡伟杰,李亚格,张鑫,等.鳞片石墨表面改性研究进展[J].耐火材料,2022,56(5):447-451,457.
[10] 王世成,高佳鑫.单宁酸协同改性超高分子量聚乙烯纤维与环氧树脂复合材料[J].高分子材料科学与工程,2021,37(4):92-98.
[11] Lim M Y,Shin H,Shin D M,et al.Poly (vinyl alcohol) nanocomposites containing reduced graphene oxide coated with tannic acid for humidity sensor[J].Polymer,2016,84:89-98.
[12] Shabanian M,Khaleghi M,Allahyari F,et al.Tannic acid-modified tin oxide nanoparticle and aromatic polyamide:from synthesis to their application for preparation of safe p-PVC[J].Polymer Bulletin,2021,78(3):1331-1352.
[13] Veisi H,Moradi S B,Saljooqi A,et al.Silver nanoparticle-decorated on tannic acid-modified magnetite nanoparticles (Fe3O4@TA/Ag) for highly active catalytic reduction of 4-nitrophenol,Rhodamine B and Methylene blue[J].Materials Science and Engineering:C,2019,100:445-452.
[14] 蔡佳琨,吴集思,李晓阳,等.SiC和WS2颗粒协同改性铜/聚酰亚胺树脂基复合材料的摩擦磨损性能[J].机械工程材料,2022,46(3):19-24.
[15] Zhan Y,Ren Y,Wan X,et al.Dielectric thermally conductive and stable poly (arylene ether nitrile) composites filled with silver nanoparticles decorated hexagonal boron nitride[J].Ceramics International,2018,44(2):2021-2029.
[16] Li R,Ding C,Yu J,et al.Enhanced thermal conductivity of polyimide composite film filled with hybrid fillers[J].High Performance Polymers,2021,33(8):905-913.
[17] Liu X,Ji T,Li N,et al.Preparation of polyimide composites reinforced with oxygen doped boron nitride nano-sheet as multifunctional materials[J].Materials & Design,2019,180:107963.
基金资助
国家自然科学基金(22035007)
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