以硅树脂为基体材料,多层石墨为导热填料,采用旋转搅拌球磨法制备了多层石墨/硅树脂导热复合材料,研究了填料对多层石墨/硅树脂复合材料热导率、热膨胀系数(CTE)和热稳定性的影响.结果表明,多层石墨在硅树脂中分散性良好.多层石墨/硅树脂复合材料的热导率随多层石墨填充量的增加而增大,填充质量分数为45％时,热导率达到2.26W· (m· K)-1,超过此值之后热导率开始下降.随着填料的增加,多层石墨/硅树脂复合材料热膨胀系数减小.与纯硅树脂相比,多层石墨/硅树脂复合材料热稳定性高.相同填充量下多层石墨/硅树脂比SiC/硅树脂、AlN/硅树脂的热导率高得多,这说明径厚比大的片状填料更易形成有效接触和导热网链.
参考文献
| [1] | Chung D D L.Materials for thermal conduction[J].Applied Thermal Engineering,2001,21:1593-1605. |
| [2] | Evans W,Prasher R,Fish J,Meakin P.Effect of aggregation and interfacial thermal resistance on thermal conductivity of nanocomposites and colloidal nanofluids[J].International Journal of Heatand Mass Transfer,2008,51:1431-1438. |
| [3] | Howe T A,Leong C K,Chung D D L Comparative evaluation of thermal interface materials for improving the thermal contact between an operating computer microprocess or and its heat sink[J].Electron Mater,2006,35:1628-1635. |
| [4] | Sim L C,Ramanan S R,Ismail H,Seetharamu K N,Goh T J.Thermal characterization of Al2O3 and ZnO reinforced silicone rubber as thermal pads for heat dissipation purposes[J].Thermochimica Acta,2005,430:155-165. |
| [5] | Zhou Hu,Zhang Shimin,Yang Mingshu.The effect of heattransfer passages on the effective thermal conductivity of high filler loading composite materials[J].Composites Science and Technology,2007,67:1035-1040. |
| [6] | Mey G De,Pilarski J,Wójcik M,Lasota M,Banaszczyk J,Vermeersch B,Napieralski A.Influence of interface materials on the thermal impedance of electronic packages[J].International Communications in Heat and Mass Transfer,2009,36:210-212. |
| [7] | 周文英,李勤,齐暑华,安群力,吴有明.复合型散热硅橡胶研究[J].高分子材料科学与工程,2007,23(4):242-245.Zhou Wenying,Li Qin,Qi Shuhua,An Qunli,Wu Youming.Heat conductive composites silicone rubber[J].Polymer Materials Science & Engineering,2007,23(4):242-245. |
| [8] | Wang S,Tambraparni M,Qiu J,Tipton J,Dean D.Thermal expansion of graphene composites[J].Macromolecules,2009,42:5251-5255. |
| [9] | Boudenne A,Ibos L,Fois M,Gehin E,Majeste J C.Thermophysical properties of polypropylene/aluminum composites[J].Journal of Polymer Science,Part B:Polymer Physics,2004,42(4):722-732. |
| [10] | Shahil K M F,Balandin A A.Graphene-multilayer graphene nanocomposites as highly efficient thermal interface materials[J].Nano Letters,2012,12(2):861-867. |
| [11] | Raza M A,Westwood A,Brown A,Hondow N,Stirling C.Characterisation of graphite nanoplatelets and the physical properties of graphite nanoplatelet/silicone composites for thermal interface applications[J].Carbon,2011,49 (13):4269-4279. |
| [12] | Hu Yizhe,Shen Jianfeng,Li Na,Hongwei,Ma Minshi,Yan Bo,Huang Weishi,Wang Wenbin,Ye Mingxin.Comparison of the thermal properties between composites reinforced by raw and amino-functionalized carbon materials[J].Composite Science and Technology,2010,70(15):2176-2182. |
| [13] | Teng C C,Ma C C C,Lu C H,et al.Thermal conductivity and structure of non-covalent functionalized graphene/epoxy composites[J].Carbon,2011,49(15):5107-5116. |
| [14] | 林锦,张海燕,洪浩群,涂文英.碳包铝纳米粒子填充硅橡胶制备散热复合材料[J].复合材料学报,2011,28(4):46-51.Lin Jin,Zhang Haiyan,Hong Haoqun,Tu wenying.Heat dissipation composites prepared by carbon coated aluminum nanoparticles filled silicone rubber[J].Acta Materiae Compositae Sinica,2011,28(4):46-51. |
| [15] | Zhang Haiyan,Lin Jin,Hong Haoqun.Thermal conductive composite prepared by carbon coated aluminum nanoparticles filled silicone rubber[J].Advanced Materials Research,2011,150-151:464-469. |
| [16] | Li L P,Zhang H Y,Pang J S,Lin J.Fabrication and performance of carbon coated copper nanoparticles[J].Materials Science Poland,2010,28:181-187. |
| [17] | Lee C,Wei X,Kysar J W,Hone J.Measurement of the elastic properties and intrinsic strength of monolayer grapheme[J].Science,2008,321:385-388. |
| [18] | Yu A,RameshP,Itkis M E,Elena B,Haddon R C.Graphite nanoplatelet-epoxy composite thermal interface materials[J].Phys Chem C,2007,111:7565-7569. |
| [19] | Yu A,Ramesh P,Sun X,Bekyarova E,Itkis M E,Haddon R C.Enhanced thermal conductivity in a hybrid graphite nanoplatelet-carbon nanotube filler for epoxy composites[J].Adv Mater,2008,20:4740-4744. |
| [20] | Kim H,Hahn H T,Viculis L M,Gilje S,Kaner R B.Electrical conductivity of graphite/polystyrene composites made from potassium intercalated graphite[J].Carbon,2007,45:1578-1582. |
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