采用端硅氧烷基聚己内酯(PCL-TESi)作为无机前躯物,通过环氧树脂/KB-2的固化反应和PCL-TESi的溶胶-凝胶过程,制备了聚己内酯/环氧树脂/SiO2(PCL/EP/SiO2)有机-无机杂化材料.利用红外光谱、透射电镜(TEM)、热失重分析(TGA)及在甲苯溶液中的溶胀试验对不同SiO2含量的杂化材料进行分析.研究发现,随着PCL-TESi含量增大杂化体系交联密度降低;此杂化体系中存在环氧和Si-O-Si两种交联网络,微观上形成纳米两相结构;Si-O-Si交联网络的形成显著提高了材料的耐热性能,使失重5%时的热分解温度从120.5℃(纯环氧树脂/KB-2体系)提高到277.6℃(SiO2质量分数为3.84%的杂化体系).
参考文献
| [1] | Bauer F,Glasel H,Hartmann E,Langguth H,Hinterwaldner R.Functionalized inorganic/organic nanocomposites as new basic raw materials for adhesives and sealants[J].Int J Adhesion Adhesives,2004,24:519-522. |
| [2] | Klukowska A,Posset U,Schottner G,Wis M L,Salemi-Delvaux C,Malatesta V.Photochromic hybrid sol gel coatings:Preparation,properties,and applications[J].Mater Sci,2002,20:95-104. |
| [3] | Nocun M,Leja E,Bugajski W.Microstructure and optical properties of methylmethacrylate-modified silica hybrid glasses and thin film[J].Mater Sci,2003,21:471-479. |
| [4] | Ni Y,Zheng S,Nie K.Morphology and thermal properties ofinorganic-organic hybrids involving epoxy resin and polyhedral oligomeric silsesquioxanes[J].Polymer.2004,45:5557-5568. |
| [5] | Hofacker S,Mechtel M,Mager M,Kraus H.Sol-gel:a new tool for coatings chemistry[J].Progress in Organic Coatings,2002,45:159-164. |
| [6] | 李艳,付绍云,林大杰,张以河,潘勤彦.二氧化硅/聚酰亚胺纳米杂化薄膜室温及低温力学性能[J].复合材料学报,2005,22(2):11-15.Li Yan,Fu Shaoyun,Lin Dajie,Zhang Yihe,Pan Qinyan.Mechanical properties of polyimide composites filled with SiO2nano-particles at room and cryogenic temperatures.Acta Materiae Compositae Sinica,2005,22(2):11-15. |
| [7] | Hass K H,Rose K.Hybrid inorganic/organic polymers with nanoscale building blocks:precursors,processing,properties and applications[J].Rev Adv Mater Sci,2003,5:47-52. |
| [8] | Matejka L,Dukh O,Kolarik J.Synthesis and characterization of organic-inorganic hybrids based on epoxy resin and 3-glycidyloxypropyltrimethoxysilane[J].Polymer,2000,41:1449-1459. |
| [9] | Yen C T,Chen W,Liaw D J,Lu H Y.Synthesis and characterization of polyimide/oligomeric methylsilsesquioxane hybrid films[J].Polymer,2003,44:7079-7087. |
| [10] | Liu P,He L,Ding H,Liu J,Yi X.Morphology of epoxy resin modified with silyl-crosslinked urethane elastomer[J].J Appl Polym Sci,2005,97:611-619. |
| [11] | Schapman F,Couvercelle J P,Bunel C.Low molar mass polybutadiene made crosslinkable by silane moities introduced via addition of thiol to double bond Ⅳ:Crosslinking study[J].Polymer,2000,41:17-25. |
| [12] | Macac J,Ivankovic H,Ivankovic M,Mencer H J.Study of cure kinetics of epoxy-silica organic inorganic hybrid materials[J].Thermochimica Acta,2004,414:219-225. |
| [13] | Tian D,Blancher S,Dubois P,Jerome R.Biodegradable and biocompatible inorganic-organic hybrid materials 2:Dynamic mechanical properties,structure and morphology[J].Polymer,1998,39:855-864. |
| [14] | Ratna D.Modification of epoxy resins for improvement of adhesion:A critical review[J].J Adhes Sci Technol,2003,17:1655-1668,and references therein. |
| [15] | Tian D,Dubois P,Jerome R.Biodegradable and biocompatible inorganic-organic hybrid materials Ⅰ:Synthesis and charactexization[J].J Polym Sci Polym Chem,1997,35:2295-2309. |
| [16] | Remiro P M,Cortazar M,Calahorra E,Calafel M M.The effect of crosslinking and miscibility on the thermal degradation of an uncured and an amine-cured epoxy resin blended with poly(ε-caprolactone)[J].Polym Degrad Stab,2002,78(1):83-93. |
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