通过熔融共混法制备了两种不同型号石墨烯微片(GNPs)填加的GNPs/聚丙烯(PP)导热复合材料,研究了GNPs型号(KNG180,KNG150)和含量对其导热性能、密度、结晶性能和热稳定性能的影响.结果表明,KNG180 GNPs/PP复合材料密度高于KNG150 GNPs/PP,同时KNG180对提高聚丙烯结晶度的效果优于KNG150.随着石墨烯微片含量的增加,两种复合材料导热系数均明显增大,而且KNG180填充的复合材料导热性能明显优于KNG150;当KNG180的添加量为60％(质量分数)时,GNPs/PP复合材料的导热系数从纯聚丙烯的0.087 W/(m· K)提高到1.32 W/(m· K),提高了14倍多.石墨烯微片的加入显著提高了聚丙烯的热稳定性,当KNG180或KNG150的质量分数为10％时,聚丙烯达到最大热失重速率时的温度从345.1℃分别提高到374.6℃和397.9℃,但是当石墨烯微片超过一定含量时,热稳定性会下降.
参考文献
| [1] | Han Z D,Fina A.Thermal conductivity of carbon nanotubes and their polymer nanocomposites:A review[J].Progress in Polymer Science,2011,36:914-944. |
| [2] | Fukushima H,Drzal L T,Rook B P,et al.Thermal conductivity of exfoliated graphite nanoplatelets[J].Journal of Thermal Analysis and Calorimetry,2006,85(1):235-238. |
| [3] | 刘加奇,张立群,杨海波,等.粒子填充聚合物基复合材料导热性能的数值模拟[J].复合材料学报,2009,26(1):36-42.Liu Jiaqi,Zhang Liqun,Yang Haibo,et al.Numerical investigation of the thermal property of particle filled polymer matrix composite[J].Acta Materiae Compositae Sinica,2009,26(1):36-42. |
| [4] | 乔 梁,赵洪强,郑精武,等.片状Al 2O3对Al2O3/FEP复合材料热导率的影响[J].复合材料学报,2009,26(6):37-41.Qiao Liang,Zhao Hongqiang,Zheng Jingwu,et al.Effects of alumina platelets on thermal conductivity of Al2O3/FEP composite[J].Acta Materiae Compositae Sinica,2009,26(6):37-41. |
| [5] | 周文英,齐暑华,王彩凤,等.高温导热绝缘涂料[J].复合材料学报,2007,24(2):28-32.Zhou Wenying,Qi Shuhua,Wang Caifeng,et al.High temperature and insulating heat conductive coating[J].Acta Materiae Compositae Sinica,2007,24(2):28-32. |
| [6] | Xu Y S,Chung D D L,Mroz C.Thermally conducting aluminum nitride polymer-matrix composites[J].Composites:Part A,2001,32:1749-1757. |
| [7] | Zhou W Y,Qi S H,Li H D,et al.Study on insulating thermal conductive BN/HDPE composites[J].Thermochimica Acta,2007,452:36-42. |
| [8] | 石志想,傅仁利,何兵兵,等.无机填料对环氧模塑料导热和阻燃性能的影响[J].复合材料学报,2011,28(6):8-13.Shi Zhixiang,Fu Renli,He Bingbing,et al.Effect of inorganic fillers on the thermal conductivity and flame retardency of epoxy molding compounds[J].Acta Materiae Compositae Sinica,2011,28(6):8-13. |
| [9] | Antar Z,Feller J F,Noel H,et al.Thermoelectric behavior of melt processed carbon nanotube/graphite/poly (lactic acid)conductive biopolymer nanocomposites (CPC)[J].Materials Letters,2012,67:210-214. |
| [10] | Yu A P,Ramesh P,Mikhail E I,et al.Graphite nanoplateletepoxy composite thermal interface materials[J].Journal of Physical Chemistry C,2007,111:7565-7569. |
| [11] | Yu A P,Ramesh P,Sun X B,et al.Enhanced thermal conductivity in a hybrid graphite nanoplatelet-carbon nanotube filler for epoxy composites[J].Advanced Materials,2008,20:4740-4744. |
| [12] | Park J G,Cheng Q F,Lu J,et al.Thermal conductivity of MWCNT/epoxy composites:The effects of length,alignment and functionalization[J].Carbon,2012,50:2083-2090. |
| [13] | Teng C C,Ma C C M,Lu C H,et al.Thermal conductivity and structure of non-covalent functionalized graphene/epoxy composites[J].Carbon,2011,49:5107-5116. |
| [14] | 费海燕,朱鹏,宋艳江,等.石墨和炭纤维分别改性热塑性聚酰亚胺复合材料的导热行为[J].复合材料学报,2007,24(5):44-49.Fei Haiyan,Zhu Peng,Song Yanjiang,et al.Thermal conduction of thermoplastic polyimide composites modified with graphite/carbon fiber[J].Acta Materiae Compositae Sinica,2007,24(5):44-49. |
| [15] | Raza M A,Westwood A,Brown A,et al.Characterisation of graphite nanoplatelets and the physical properties of graphite nanoplatelet/silicone composites for thermal interface applications[J].Carbon,2011,49:4269-4279. |
| [16] | Chen G H,Weng W G,Wu D J.Preparation and characterization of graphite nanosheets from ultrasonic powdering technique[J].Carbon,2004,42:753-759. |
| [17] | Li J X,Cheung W L,Jia D M.A study on the heat of fusion of beta-polypropylene[J].Polymer,1999,40:1219-1222. |
| [18] | 杜茂平,魏伯荣,宫大军.HDPE和MVQ导热性的影响因素[J].塑料工业,2007,35(8):40-42.Du Maoping,Wei Borong,Gong Dajun.Influential factors on thermal conductivity of HDPE and MVQ[J].China Plastic Industry,2007,35(8):40-42. |
| [19] | 周春玉,曾亮,吉莉,等.石墨烯及其复合材料导热性能的研究现状[J].材料开发与应用,2010,25(6):94-100.Zhou Chunyu,Zeng Liang,Ji Li,et al.Research on the thermal conductivities of graphene and graphene based composite materials[J].Development and Application of Materials,2010,25(6):94-100. |
| [20] | 王纪斌,鲍宇彬,李秋影,等.炭黑的表面修饰及其对炭黑/硅橡胶导热性能的影响[J].复合材料学报,2012,29(5):6-10.Wang Jibin,Bao Yubin,Li Qiuying,et al.Surface modification of carbon black and its effect on the thermal conductivity of carbon black/silicon rubber[J].Acta Materiae Compositae Sinica,2012,29(5):6-10. |
| [21] | Zhou W Y,Qi S H,Tu C C,et al.Effect of the particle size of Al2O3 on the properties of filled heat-conductive silicone rubber[J].Journal of Applied Polymer Science,2007,104(2):1312-1318. |
| [22] | Cui W,Du F P,Zhao J C,et al.Improving thermal conductivity while retaining high electrical resistivity of epoxy composites by incorporating silica-coated muli-walled carbon nanotubes[J].Carbon,2011,49:495-500. |
| [23] | Hu M,Yu D,Wei J.Thermal conductivity determination of small polymer samples by differential scanning calorimetry[J].Polymer Testing,2007,26(3):333-337. |
| [24] | Mhike W,focke W W,Mofokeng J P,et al.Thermally conductive phase-change materials for energy storage based on low-density polyethylene,soft-Fischer-Tropsch wax and graphite[J].Thermochimica Acta,2012,527:75-82. |
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