以环氧改性有机硅树脂为基体,氮化硅、氧化铝混合填料为导热粒子制备了导热绝缘涂料.研究了涂料力学性能、热导率、电绝缘性、热稳定性等性能.结果表明:在填料质量分数40%及较佳的氧化铝与氮化硅质量比时,涂层拉伸强度为8.02 MPa,断裂延伸率为1.27%,附着力达到572.2 N·cm-2,热导率高达1.25 W·(m·K),介电常数5.7,体、表电阻率分别为3×1013 Ω·cm与4.3×1013Ω,可长期在200℃下使用.与不使用导热填料的环氧改性有机硅树脂涂层相比具有较高的传热能力.
参考文献
| [1] | Leivo E M,Kellberg T H,Kolari M J.Structure and thermal conductivity of flame sprayed polyamide 11 coatings filled with AlN、 Al2O3 ceramics[C] // ASM Thermal Spray Society,Thermal Spray 2001 New Surfaces for a New Millennium.Singapore:ASM International,2001:327-330. |
| [2] | Lu X,Xu G,Hofstra P G.Moisture-absorption,dielectric relaxation,and thermal conductivity studies of polymer composites[J].J Polym Sci,1998,36(13):2259-2265. |
| [3] | Ogawa T S.Ceramics-containing fluoropolymer coatings for cooking utensils or heating rolls of copying machines:JP Patent,Kokai Tokyo Koho,01 236 255[P].1989-06-18. |
| [4] | 郭亚林,梁国正,丘哲明.一种新型热防护涂料研究[J].宇航学报,2005,26(5):635-638.Guo Yalin,Liang Guozheng,Qiu Zheming.Study on a new thermal protection coating[J].Journal of Astronautics,2005,26(5):635-638. |
| [5] | Xu Y S,Chung D D,Mroz C.Thermally conducting alumi num nitride polymer-matrix composites[J].Composites Part A,2001,32(5):1749-1757. |
| [6] | Chung D D L.Thermal interface materials[J].J Mater Eng Perform,2001,13(10):56-59. |
| [7] | 孟军锋,何敏婷.特种涂料用环氧改性有机硅树脂[J].现代涂料与涂装,2002,5(5):12-15.Meng Junfeng,He Minting.Epoxy modified silicone resin for special coatings[J].Modern Paint and Finishing,2002,5(5):12-15. |
| [8] | Kananu S K.Dielectric properties of matrix composite materi als with high volume concentrations of inclusions[J].Int J Eng Sci,2003,41(5):1287-1312. |
| [9] | James R G,Yvonne Y V,Steven B.The electrical and thermal conductivity of woven pristine and intercalated graphite fiber-polymer composites[J].Carbon,2003,41(12):2187-2193. |
| [10] | Severin S,Efim L,Jacob I.Thermal resistance and apparent thermal conductivity of thin plasma-sprayed mullite coatings[J].Surface and Coatings Technology,2006,200(11):3404-3410. |
| [11] | 王震宇,韩恩厚,柯伟.可膨胀石墨改性APP/PER/EN防火涂料热降解行为[J].复合材料学报,2005,22(5):52-59.Wang Zhenyu,Han Enhou,Ke Wei.Thermal degradation of expandable graphite modified APP/PER/EN flame retardant coating[J].Acta Materiae Compositae Sinica,2005,22(5):52-59. |
| [12] | Martan J,Semmar N,Leborgne C.Thermal properties characterization of conductive thin films and surfaces by pulsed lasers[J].Applied Surface Science,2005,247(1/4):57-63. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%