以多聚磷酸与聚醚多元醇反应制备得到聚醚多元醇磷酸酯,利用聚醚多元醇磷酸酯对环氧基团的反应活性,研究其对环氧树脂-酸酐体系的增韧效果.通过力学性能、热性能以及扫描电镜等研究发现,聚醚多元醇磷酸酯可将与环氧树脂相容性差的聚环氧丙烷链段强制引入到环氧网络中,增强界面性能,具有较好的增韧效果.聚醚在环氧固化网络结构中析出,形成“海岛”结构,SEM测试显示随着磷酸酯化程度的不同,聚醚分相的“海岛”结构的程度和尺寸可以调控;当分散相保持一定的密度和尺寸时,才能达到最佳的增韧效果.同时结果显示,聚醚多元醇磷酸酯的加入基本不影响环氧树脂的力学性能和耐热性能.
参考文献
| [1] | Lazzeri A.;Bucknall CB. .APPLICATIONS OF A DILATATIONAL YIELDING MODEL TO RUBBER-TOUGHENED POLYMERS[J].Polymer: The International Journal for the Science and Technology of Polymers,1995(15):2895-2902. |
| [2] | PEARSON R A;YEE A F .Toughening mechanisms in thermoplastic-modified epoxies:1.modification using poly(phenylene oxide)[J].Polymer,1993,34(17):3658-3670. |
| [3] | LEE H;NEVILLE H.Hand book of epoxy resins[M].New York:McGraw-Hill Book Company,Inc,1967 |
| [4] | IIASIIEMI S;KINLOCH A J;WILLIAMS J G .The analysis of interlaminar fracture in uniaxial fibre-polymer composites[J].Proceedings of the Royal Society A:Mathematical,Physical & Engineering Sciences,1872,427:173-199. |
| [5] | BUCKNALL C B.Toughened plastics[M].London:Applied Science,1977 |
| [6] | Tripathi G;Srivastava D .Effect of carboxyl-terminated poly (butadiene-co-acrylonitrile) (CTBN) concentration on thermal and mechanical properties of binary blends of diglycidyl ether of bisphenol-A (DGEBA) epoxy resin[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2007(1/2):262-269. |
| [7] | 葛东云,刘元镛,宁荣昌.环氧树脂及其改性树脂的低温性能分析和增韧研究（Ⅰ）：低温性能分析[J].中国胶粘剂,2000(02):1-5,24. |
| [8] | BASCOM W D;COTTINGTON R L;JONES R L et al.The fracture of epoxy and elastomer-modified epoxy polymers in bulk and as adhesives[J].Journal of Applied Polymer Science,1975,19(09):2545-2562. |
| [9] | Guo QP;Wang K;Chen L;Zheng SX;Halley PJ .Phase behavior, crystallization, and nanostructures in thermoset blends of epoxy resin and amphiphilic star-shaped block copolymers[J].Journal of Polymer Science, Part B. Polymer Physics,2006(6):975-985. |
| [10] | Mijovic J.;Sy JW.;Mondragon I.;Shen MZ. .Dynamics and morphology in nanostructured thermoset network/block copolymer blends during network formation[J].Macromolecules,2000(14):5235-5244. |
| [11] | 刘诗飞,王永三,朱麟勇,李欣欣.聚醚多元醇对环氧树脂的增韧改性[J].功能高分子学报,2010(02):144-148. |
| [12] | Zhang, C.;Zheng, S. .Morphology and fracture toughness of nanostructured epoxy resin containing amino-terminated poly(propylene oxide)[J].Journal of Macromolecular Science. Physics,2010(3):574-591. |
| [13] | PENCZEK S;KALUZYNSKI K;PRETULA J .Addition of H3PO4 to diglycidyl ethers of bisphenol A:kinetics and product structure[J].Center of Molecular and Macromolecular Studies,2006,41(02):90-363. |
| [14] | 严慧积 .新型磷酸酯增韧环氧树脂的研究[D].上海:华东理工大学,2012. |
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%