以柔性胺D-230作为改性剂,用浇铸成型法制备了环氧树脂结构胶,研究了其力学性能与D-230加入量的关系,并探讨了该材料的微观断裂形貌与韧性的关系.力学测试结果显示室温断裂延伸率、室温和低温冲击韧性随D-230含量的增加而增加,表明D-230对环氧树脂产生有效的增韧作用.当D-230加入量为21%(质量分数)时,室温拉伸强度和弹性模量最大,分别为85.44MPa和3.22GPa,当继续增加D-230的含量时,二者则呈降低的趋势.对拉伸断面形貌进行扫描电子显微(SEM)分析显示,随着D-230含量的增加,断口形貌越粗糙,表明抗开裂能力增加,这与高断裂延伸率和高冲击韧性的结果一致.热分析实验结果显示,体系的玻璃化温度(Tg)随着D-230含量的增加而降低.
参考文献
| [1] | LI F M;BAO J W;CHEN X B et al.Factors influencing EB curing of epoxy matrix[J].Radiation Physics and Chemistry,2002,2863(3-6):557-561. |
| [2] | 郑亚萍;宁冗长;乔生儒 .环氧树脂基纳米复合材料研究进展[J].化工新型材料,2001,28(03):17-18. |
| [3] | 崔益民,潘皖江,武松涛,王珏,王先锋,白小庆.TOKAMAK超导磁体用VPI浸渍树脂应用性能研究[J].绝缘材料,2001(02):44-46. |
| [4] | 石凤,段跃新,曾秀妮,梁志勇,张佐光.双酚A型环氧树脂/催化型固化剂体系的粘度模型[J].复合材料学报,2005(06):72-79. |
| [5] | COLYER B;BALL M T;CAMPBELL M P .The work of fracture of epoxy resins[J].Cryogenics,1974,14(05):281-283. |
| [6] | SAWA F;NISHUIMA S;OHTANI Y et al.Fracture toughness and relaxation of epoxy resins at cryogenic temperatures[J].Advances in Cryogenic Engineering Materials,1994,40B:1113-1119. |
| [7] | KINLOCH A J;SHAW S J;TOD D A et al.Deformation and fracture behavior of a rubber-toughened epoxy:1 microstructure and fracture studies[J].Polymer,1983,24(10):1341-1354. |
| [8] | KINLOCH A J;SHAW S J;TOD D A et al.Deformation and fracture behavior of a rubber-toughened epoxy:2 failure criteria[J].Polymer,1983,24(10):1355-1363. |
| [9] | C.J. Huang;S.Y. Fu;Y.H. Zhang .Cryogenic properties of SiO_2/epoxy nanocomposites[J].Cryogenics,2005(6):450-454. |
| [10] | NAKAMURA Y;YAMAGUCHI M;KITAYAMA A et al.Effect of particle size on fracture toughness of epoxy resin filled with angular-shaped silica[J].POLYMER,1991,32(12):2221-2229. |
| [11] | NAKAMURA Y;YAMAGUCHI M;KITAYAMA A et al.Effect of particle size on impact properties of epoxy resin filled with angular shaped silica particles[J].POLYMER,1991,32(16):2976-2979. |
| [12] | URBACZEWSKI-ESPUCHE E;GERARD J F;PASCAULT J P et al.Toughness improvement of an epoxy/anhydride matrix.Influence on processing and fatigue properties of unidirectional glass-fiber composites[J].Journal of Applied Polymer Science,1993,47(06):991-1002. |
| [13] | MOLONEY A C;KAUSCH H H;STIEGER H R .The fracture of particulate-filled epoxide resins[J].Journal of Materials Science,1984,19(04):1125-1130. |
| [14] | 郑亚萍,王波.TiO2/环氧树脂纳米复合材料的研究[J].复合材料学报,2002(04):11-13. |
| [15] | Bagheri R.;Pearson RA. .INTERFACIAL STUDIES IN CTBN-MODIFIED EPOXIES[J].Journal of Applied Polymer Science,1995(2):427-437. |
| [16] | Schroder N.;Doll W.;Mulhaupt R.;Konczol L. .Modification of epoxy resin with alpha,omega-oligo(butylmethacrylate)diols[J].Journal of Applied Polymer Science,1998(4):785-796. |
| [17] | Stefani PM.;Aranguren MI.;Moschiar SM. .Polyurethane-ductilized epoxy resins[J].Journal of Applied Polymer Science,1998(11):1781-1789. |
| [18] | OKAMATSU T;KITAJIMA M;HANAZAWA H et al.Effect of modified silicone elastomer particles on the toughening of epoxy resin[J].Journal of Adhesion Science and Technology,1998,12(08):813-830. |
| [19] | OKAMATSU T;KITAJIMA M;HANAZAWA H et al.Effect of phase structure on the adhesion properties of the dimethoxysilyl-terminated polypropylene oxide epoxy resin system[J].Journal of Adhesion Science and Technology,1999,13(01):109-125. |
| [20] | FRIGIONE M E;MASCIA L;ACIERNO D .Oligomeric and polymeric modifiers for toughening of epoxy resins[J].European Polymer Journal,1995,31(11):1021-1029. |
| [21] | IIJIMA T;ARAI N;FUKADA W et al.Toughening of aromatic diamine-cured epoxy resins by poly(ethylene phthalate)s and the related copolyesters[J].European Polymer Journal,1995,31(03):275-284. |
| [22] | 孙志杰,殷立新,梁志勇,张佐光.PSF/环氧共混基体体系增韧机理研究[J].复合材料学报,2000(01):42-45. |
| [23] | Harani H.;Bakar M.;Fellahi S. .Toughening of epoxy resin using synthesized polyurethane prepolymer based on hydroxyl-terminated polyesters[J].Journal of Applied Polymer Science,1998(13):2603-2618. |
| [24] | 茅素芬,肖丽.聚氨酯/环氧树脂共混物的形态结构及其力学性能[J].高分子材料科学与工程,1996(01):85-90. |
| [25] | GOSNELL R B;LEVINE H H .Some effects of structure on a polymer's performance as a cryogenic adhesive[J].Journal of Macromolecular Science:Chemistry,1969,A3(07):1381-1393. |
| [26] | LIN M L;CHANG K H;CHANG F C et al.The epoxy-polycarbonate blends cured with aliphatic amine-Ⅱ thermal and mechanical properties mechanisms[J].Journal of Polymer Science Part B:Polymer Physics,1997,35(13):2183-2191. |
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