利用ε-己内酯的酶促开环聚合,合成了α-羟基,ω-环氧基聚己内酯低聚物( ETPCL)；利用—OH与—NCO的亲核加成反应,通过聚氨酯途径合成了环氧基封端的聚己内酯接枝环氧树脂共聚物(PCL-g-GY250)；将PCL-g-GY250与分子量较高的环氧树脂GT7071进行共混,通过胺类固化剂与环氧基团的固化反应制备了不同PCL-g-GY250含量的环氧树脂复合体系(PCL-g-GY250/GT7071)；利用热失重分析(TGA)及在甲苯中的溶胀实验分别对复合体系的耐热性能和交联密度进行了表征.结果表明:随PCL-g-GY250含量的增加,体系的交联网络密度逐渐下降；PCL-g-GY250的引入,使得复合体系的耐温性能得到改善:当PCL-g-GY250与GT7071的质量比为4∶1时,固化体系的5％热失重温度(T5％d)可由纯环氧固化体系的145.0℃提高到216.3℃；尤其是纯PCL-g-GY250固化体系的T5％d更是达到293.9℃,相比纯环氧树脂固化体系提高了148.9℃.
参考文献
| [1] | 司小燕,郑水蓉,王熙.环氧树脂胶粘剂增韧改性的研究进展[J].粘接,2007(03):41-44. |
| [2] | Bluma G.Soares;Viviane Gongalez;Rurik Galimberti .Polyester Containing Isocyanate Groups-Modified Epoxy Resin:Rheological,Dynamic-Mechanical,and Impact Properties[J].Polymer engineering and science,2008(10):1917-1922. |
| [3] | Ong S;Ismail J;Abu Bakar M;Rahman IA;Sipaut CS;Chee CK .Polyurethane-Modified Epoxy Resin: Solventless Preparation and Properties[J].Journal of Applied Polymer Science,2009(6):3094-3103. |
| [4] | Soo-Jin Park;Fan-Long Jin;Jae-Rock Lee .Thermal and mechanical properties of tetrafunctional epoxy resin toughened with epoxidized soybean oil[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2004(1/2):109-114. |
| [5] | Murali M;Ratna D;Samui AB;Chakraborty BC .Synthesis, characterization, and evaluation of carboxyl-terminated poly(ethylene glycol) adipate-modified epoxy networks: Effect of molecular weight[J].Journal of Applied Polymer Science,2007(3):1723-1730. |
| [6] | Soares BG;Goncalez V;Galimberti R;Sirqueira AS;Barcia FL;Simao RA .Toughening of an epoxy resin with an isocyanate-terminated polyether[J].Journal of Applied Polymer Science,2008(1):159-166. |
| [7] | HAMID Y;MOSLEM M L;SADEGH J .Synthesis and properties of biodegradable elastomeric epoxy modified polyurethanes based on poly(ε-caprolactone) and poly(ethylene glycol)[J].European Polymer Journal,2005,41:2370-2379. |
| [8] | 王永亮,易国斌,康正,熊富华,周平,崔亦华.聚己内酯的合成与应用研究进展[J].化学与生物工程,2006(03):1-3,9. |
| [9] | 赫丽华,刘平桂,宋江选.聚硅氧烷/聚己内酯/环氧树脂复合体系的制备及表面性能[J].复合材料学报,2009(03):60-66. |
| [10] | Liu PG;Song JX;He LH;Liang XQ;Ding HY;Li QF .Alkoxysilane functionalized polycaprolactone/polysiloxane modified epoxy resin through sol-gel process[J].European Polymer Journal,2008(3):940-951. |
| [11] | NI Y;ZHENG S .Influence of intramolecular specific interactions on phase behavior of epoxy resin and poly(ε-caprolactone)blends cured with aromatic amines[J].Polymer,2005,46:5828-5839. |
| [12] | P. M. Remiro;M. M. Cortazar;M. E. Calahorra;M. M. Calafel .Miscibility and Crystallization of an Amine-Cured Epoxy Resin Modified with Crystalline Poly(ε-caprolactone)[J].Macromolecular chemistry and physics,2001(7):1077-1088. |
| [13] | P.M. Remiro;M. Cortazar;E. Calahorra .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].Polymer Degradation and Stability,2002(1):83-93. |
| [14] | Yin MH;Zheng SX .Ternary thermosetting blends of epoxy resin, poly(ethylene)oxide and poly(epsilon-caprolactone)[J].Macromolecular chemistry and physics,2005(9):929-937. |
| [15] | Sangermano, M;Tonin, M;Yagci, Y .Degradable epoxy coatings by photoinitiated cationic copolymerization of bisepoxide with epsilon-caprolactone[J].European Polymer Journal,2010(2):254-259. |
| [16] | Zhou, J.;Wang, W.;Villarroya, S.;Thurecht, K.J.;Howdle, S.M. .Epoxy functionalised poly(ε-caprolactone): Synthesis and application[J].Chemical communications,2008(44):5806-5808. |
| [17] | Schapman F.;Bunel C.;Couvercelle JP. .Low molar mass polybutadiene made crosslinkable by the introduction of silane moieties via urethane linkage: 1. Synthesis and kinetic study[J].Polymer: The International Journal for the Science and Technology of Polymers,1998(4):965-971. |
| [18] | 马玖彤,李全顺,王元鸿,韩四平,冯雁.引发剂对酶促开环聚合ε-己内酯的影响[J].生物加工过程,2006(04):26-31. |
| [19] | 齐耿耿,孙建中,周其云.酶催化己内酯开环聚合及表征[J].高校化学工程学报,2003(06):655-659. |
| [20] | 王迪,张宝,李亚鹏,孙景辉.酶促开环聚合和原子转移自由基聚合制备新型H型嵌段共聚物[J].高等学校化学学报,2008(07):1479-1482. |
| [21] | HE L;LIU P;DING H .Microstructures and thermal properties of polycaprolactone/epoxy resin/SiO2 Hybrids[J].J Adhesion and Interface,2006,7(04):32-38. |
| [22] | LIU P;HE L;DING H .Morphology of epoxy resin modied with silylcrosslinked urethane elastomer[J].Journal of Applied Polymer Science,2005,97:611-619. |
| [23] | 赫丽华,刘平桂,丁鹤雁.聚己内酯/环氧树脂/SiO2杂化材料的制备及性能[J].复合材料学报,2006(03):71-76. |
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%