采用连续预氧化碳化法,在700～1300℃制备了聚丙烯腈(PAN)基碳化纤维.使用元素分析仪、X射线衍射仪和高精度电阻仪检测了碳化纤维的化学成分、物相结构和体电阻率;使用绝缘电阻仪测试了碳化纤维/树脂复合涂层的表面电阻率.研究结果表明,随着碳化温度的升高,纤维的碳元素含量增大,同时纤维中形成大量类石墨结构,增强了纤维的导电性,碳化纤维的电阻率由1.12Ω·cm急剧下降至1.95×10~(-3)Ω·cm;在树脂中添加短切碳化纤维制备的防静电复合涂层的表面电阻率可在10~4～10~7Ω之间调整.
Polyacrylonitrile (PAN)-based carbonaceous fibers for antistatic application were prepared at carbonization temperature from 700 to 1300℃. Chemical composition, microstructure and electrical resistivity of the carbonaceous fibers were characterized using elemental analyzer, X-ray diffractometer and high precision electrical resistance tester; surface electrical resistivity of carbonaceous fiber/resin composite coatings was measured using insulation tester. Results indicated that the electrical resistivity of carbonaceous fibers decreased drastically from 1.12 to 1.95×10~(-3)Ω·cm due to the large amount of turbostratic graphite structures formed in carbonization process. Surface electrical resistivity of antistatic coatings prepared with carbonaceous fibers was adjustable in the range of 10~4 to 10~7Ω to satisfy specific applications.
参考文献
| [1] | Thongruang W.;Spontak RJ.;Balik CM. .Correlated electrical conductivity and mechanical property analysis of high-density polyethylene filled with graphite and carbon fiber[J].Polymer: The International Journal for the Science and Technology of Polymers,2002(8):2279-2286. |
| [2] | I. Novak;I. Krupa;I. Chodak .Electroconductive adhesives based on epoxy and polyurethane resins filled with silver-coated inorganic fillers[J].Synthetic Metals,2004(1):13-19. |
| [3] | Azim SS;Satheesh A;Ramu KK;Ramu S;Venkatachari G .Studies on graphite based conductive paint coatings[J].Progress in Organic Coatings: An International Review Journal,2006(1):1-4. |
| [4] | Panwar, V;Kang, B;Park, JO;Park, S;Mehra, RM .Study of dielectric properties of styrene-acrylonitrile graphite sheets composites in low and high frequency region[J].European Polymer Journal,2009(6):1777-1784. |
| [5] | Narkis M;Lidor G;Vaxman A et al.[J].Journal of Electrostatics,1999,47(04):201-214. |
| [6] | Myong-Goo Lee;Young Chang Nho .Electrical resistivity of carbon black-filled high-density polyethylene (HDPE) composite containing radiation crosslinked HDPE particles[J].Radiation Physics and Chemistry,2001(1):75-79. |
| [7] | Chan C M;Cheng C L;Yuen M M F .[J].Polymer Engineering and Science,2004,37(07):1127-1136. |
| [8] | Novak I;Krupa I;Janigova I .]Hybrid electro-conductive composites with improved toughness, filled by carbon black[J].Carbon: An International Journal Sponsored by the American Carbon Society,2005(4):841-848. |
| [9] | Mohammed H.Al-Saleh;Uttandaraman Sundararaj .A review of vapor grown carbon nanofiber/polymer conductive composites[J].Carbon: An International Journal Sponsored by the American Carbon Society,2009(1):2-22. |
| [10] | I. Novak;I. Krupa;I. Chodak .Electroconductive adhesives based on epoxy and polyurethane resins filled with silver-coated inorganic fillers[J].Synthetic Metals,2004(1):13-19. |
| [11] | Krupa I;Mikova G;Novak I;Janigova I;Nogellova Z;Lednicky F;Prokes J .Electrically conductive composites of polyethylene filled with polyamide particles coated with silver[J].European Polymer Journal,2007(6):2401-2413. |
| [12] | Teng C C;Ma C C M;Huang Y W .[J].Composites Part A:Applied Science and Manufacturing,2008,39(12):1869-1875. |
| [13] | Ian O'Connor;Sukanta De;Jonathan N. Coleman .Development of transparent, conducting composites by surface infiltration of nanotubes into commercial polymer films[J].Carbon,2009(8):1983-1988. |
| [14] | Das N C;Chaki T K;Khastgir D et al.[J].Advances in Polymer Technology,2001,20(03):226-236. |
| [15] | Cakmak G;Kucukyavuz Z;Kucukyavuz S et al.[J].Composites Part A:Applied Science and Manufacturing,2004,35(04):417-421. |
| [16] | Drubetski M;Siegmann A;Narkis M .Electrical properties of hybrid carbon black/carbon fiber polypropylene composites[J].Journal of Materials Science,2007(1):1-8. |
| [17] | Bar H;Narkis M;Boiteux G .[J].Polymer Composites,2004,26(01):12-19. |
| [18] | Lux F .[J].Journal of Materials Science,1993,28(02):285-301. |
| [19] | Xue QZ. .The influence of particle shape and size on electric conductivity of metal-polymer composites[J].European Polymer Journal,2004(2):323-327. |
| [20] | 贺福.碳纤维及其应用技术[M].北京:化学工业出版社,2004:85. |
| [21] | Inagaki M;Feiyu K.Carbon Materials Science and Engineering[M].北京:清华大学出版社,2006:69. |
| [22] | 贺福.碳纤维及其应用技术[M].北京:化学工业出版社,2004:279-280. |
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