Fabrication and property of epoxy composite filled with zirconium tungsten phosphate with negative thermal expansion for LED application

Expand
  • College of Chemistry and Environmental Engineering,Shenzhen University,Shenzhen 518055

Received date: 2020-03-22

  Revised date: 2021-06-14

  Online published: 2021-09-30

Abstract

Due to the advantages of long use time,energy saving and environmental protection,LED develops rapidly and is widely applied in display and lighting fields such as large scale display and white light illumination.Nowadays,epoxy resin is one of the most common used packaging materials for LED devices because of its low cost and excellent properties.However,it's characteristic of large thermal expansion coefficient (CTE) usually causes inconsistency of thermal expansion behaviors between the chip or other metal parts inside the LED and packaging materials during using,which may cause damage to the LED chip and finally resulting in the failure of devices or other reliability issues.In order to reduce the thermal expansion coefficient of LED packaging materials,negative thermal expansion powder of tungsten zirconium phosphate (ZWP) was synthesized by microwave hydrothermal method,which was filled into bisphenol A epoxy resin to prepare ZWP/E-51 epoxy composites with different filling content.The effect of microwave hydrothermal process on the morphology,structure and property of ZWP powder was studied.And the thermal expansion properties,optical and thermodynamic properties of epoxy composites under different filling contents were also studied.The main results showed that:(1)compared with hydrothermal method,the ZWP powder prepared by microwave hydrothermal method was smaller and more uniform in size,giving better property of negative thermal expansion;(2)With the increment of ZWP powder,the thermal expansion property of ZWP/E-51 was improved significantly,and a 40wt% ZWP loading gave a 42.7% (about 30.5×10-6/℃) reduction of CTE at a temperature range of 30~90℃.And in addition,ZWP/epoxy composite with 10wt% loading showed better comprehensive properties.

Cite this article

Deng Zhentao, Gui Dayong, Chen Chaoxian, Lai Xiaolin, Wei Zhijie, Li Siping . Fabrication and property of epoxy composite filled with zirconium tungsten phosphate with negative thermal expansion for LED application[J]. New Chemical Materials, 2021 , 49(9) : 62 -68 . DOI: 10.19817/j.cnki.issn 1006-3536.2021.09.014

References

[1] Jin F L,Li X,Park S J.Synthesis and application of epoxy resins:a review[J].Journal of Industrial and Engineering Chemistry,2015,54(2):25-29.
[2] Bello S A,Agunsoye J O,Hassan S B,et al.Epoxy resin based composites,mechanical and tribological properties:a review[J].Tribology in Industry,2015,37(4):14-17.
[3] Zhang Y.Progress in the application of epoxy resin[J].Bonding,2010,31(8):63-66.
[4] Chen P,Liu S P,Wang D W,et al.Epoxy resin and its application[M].Beijing:Chemical Industry Press,2011,15-26.
[5] Chruściel JJ,Leśniak E.Modification of epoxy resins with functional silanes,polysiloxanes,silsesquioxanes,silica and silicates[J].Progress in Polymer Science,2015,41:67-121.
[6] He Y,Yang S,Liu H,et al.Reinforced carbon fiber laminates with oriented carbon nanotube epoxy nanocomposites:magnetic field assisted alignment and cryogenic temperature mechanical properties[J].Journal of Colloid and Interface Science,2018,517:40-51.
[7] Cha J,Jin S,Shim JH,et al.Functionalization of carbon nanotubes for fabrication of CNT/epoxy nanocomposites[J].Materials & Design,2016,95:1-8.
[8] Kołodziejczak-Radzimska A,Jesionowski J.Zinc oxide—from synthesis to application:a review[J].Materials,2014,7(4):2833-2881.
[9] Li Y Q,Fu S Y,Mai Y W.Preparation and characterization of transparent ZnO/epoxy nanocomposites with high-UV shielding efficiency[J].Polymer,2006,47(6):2127-2132.
[10] Li T X,Su H B,Gao L,et al.Performance and characterization of resistance to ultraviolet radiation of Vi-POSS-TiO2/EP Nanocomposites[C].Switzerland:Materials Science Forum,2016:411-416.
[11] Chen C G,Justice R S,Schaefer D W,et al.Highly dispersed nanosilica-epoxy resins with enhanced mechanical properties[J].Polymer,2008,49(17):3805-3815.
[12] Sprenger S.Improving mechanical properties of fiber-reinforced composites based on epoxy resins containing industrial surface-modified silica nanoparticles:review and outlook[J].Journal of Composite Materials,2015,49(1):53-63.
[13] Olmos D,Martínez F,González-Gaitano G,et al.Effect of the presence of silica nanoparticles in the coefficient of thermal expansion of LDPE[J].European Polymer Journal,2011,47(8):1495-1502.
[14] Jang J S,Varischetti J,Lee G W,et al.Experimental and analytical investigation of mechanical damping and CTE of both SiO particle and carbon nanofiber reinforced hybrid epoxy composites[J].Composites Part A:Applied Science & Manufacturing,2011,42(1):98-103.
[15] Zhi C,Bando Y,Terao T,et al.Boron nanotube-polymer composites:towards thermoconductive,electrically insulating polymeric composites with boron nitride nanotubes as fillers[J].Advanced Functional Materials,2010,19(12):1857-1862.
[16] Abdalla M,Dean D,Theodore M,et al.Magnetically processed carbon nanotube/epoxy nanocomposites:morphology,thermal,and mechanical properties[J].Polymer,2010,51(7):1614-1620.
[17] Yasmin A,Luo J J,Abot J L,et al.Mechanical and thermal behavior of clay/epoxy nanocomposites[J].Composites Science & Technology,2006,66(14):2415-2422.
[18] Mehmet C,Angus P,Wilkinson.Pressure dependence of negative thermal expansion in Zr2(WO4)(PO4)2[J].Solid State Commun,2009,149(3):421-424.
[19] Evans J S O,Mary T A,Sleight A W.Negative thermal expansion in a large molybdate and tungstate family[J].Journal of Solid State Chemistry,1997,133(2):580-583.
[20] Evans J S O,Mary T A,Sleight A W.Structure of Zr2(WO4)(PO4)2 from powder X-ray data:cation ordering with no superstructure[J].Journal of Solid State Chemistry,1995,120(1):101-104.
[21] Liu X S,Cheng F X,Wang J Q,et al.The control of thermal expansion and impedance of Al-Zr2(WO4)(PO4)2 nano-cermets for near-zero-strain Al alloy and fine electrical components[J].Journal of Alloys and Compounds,2013,553:1-7.
[22] Tao J Z,Sleight A W.The role of rigid unit modes in negative thermal expansion[J].Journal of Solid State Chemistry,2003,173(2):442-448.
[23] Isobe T,Umezome T,Kameshima Y,et al.Preparation and properties of negative thermal expansion Zr2WP2O12 ceramics[J].Materials Research Bulletin,2009,44(11):2045-2049.
[24] Wu H,Rogalski M,Kessler M R.Zirconium tungstate/epoxy nanocomposites:effect of nanoparticle morphology and negative thermal expansivity[J].ACS Applied Materials & Interfaces,2013,5(19):9478-9487.
[25] Shi X W,Lian H,Qi R Q,et al.Preparation and properties of negative thermal expansion Zr2WP2O12 powders and Zr2WP2O12/TiNi composites[J].Mater Sci Eng B Adv,2016,203:1-6.
[26] Hussain M,Varley R J,Cheng Y B,et al.Investigation of thermal and fire performance of novel hybrid geopolymer composites[J].Journal of Materials Science,2004,39(14):4721-4726.
[27] Vo H T,Shi F G.Towards model-based engineering of optoelectronic packaging materials:dielectric constant modeling[J].Microelectronics Journal,2002,33(5):409-415.
[28] Badapanda T,Senthil V,Anwar S,et al.Structural and dielectric properties of polyvinyl alcohol/barium zirconium titanate polymer-ceramic composite[J].Current Applied Physics,2013,13(7):1490-1495.
Options
Outlines

/