以三羟甲基丙烷和己内酯为原料,辛酸亚锡为催化剂,经开环聚合得到含柔性长链的液态聚己内酯多元醇(PCLs).再以PCLs为核单体,二羟甲基丙酸为臂,对甲苯磺酸为催化剂,经缩聚反应合成了两代超支化聚酯(HBPEs).采用FT-IR、1H-NMR、GPC对HBPEs进行结构表征,结果表明:HBPE-2的支化度为0.44,相对分子质量与理论相对分子质量比较接近,HBPE-1和HBPE-2的相对分子质量分布系数分别为1.70和1.82,聚酯的代数增加后相对分子质量分布有所变宽.以TDI三聚体为固化剂,对超支化聚酯HBPEs涂膜性能进行测试.结果证明:根据结构设计所合成的超支化聚酯(HBPEs)的涂膜,与同类产物相比,涂膜耐冲击性和柔韧性更佳.其中第2代超支化聚酯的综合性能更优异,耐冲击性50 cm,柔韧性1 mm,铅笔硬度HB.
参考文献
| [1] | 罗运军;夏敏;王兴元.超支化聚酯[M].北京:化学工业出版社,2009 |
| [2] | IKLADIOUS N E;MANSOUR S H;ROZIK N N et al.New aliphatic hyperbranched polyester polyols base on 1,3,5-tri (2-hydroxyethyl) cyanuric acid as a core[J].Journal of Polymer Science Part A:Polymer Physics,2008,46(16):5568-5579. |
| [3] | 高开元,张爱波,栾静繁.超支化研究进展及应用[J].材料科学与工程学报,2010(01):152-155. |
| [4] | 张新荔,何伟,孟运东.脂肪族超支化聚酯在涂料中的应用研究进展[J].涂料工业,2009(08):50-54. |
| [5] | Claesson H.;Malmstrom E.;Johansson M.;Hult A. .Synthesis and characterisation of star branched polyesters with dendritic cores and the effect of structural variations on zero shear rate viscosity[J].Polymer: The International Journal for the Science and Technology of Polymers,2002(12):3511-3518. |
| [6] | Hong XY.;Zhang YM.;Liu GR.;Chen QD. .Synthesis and characterization of a hyperbranched polyol with long flexible chains and its application in cationic UV curing[J].Journal of Applied Polymer Science,2000(6):1353-1356. |
| [7] | Smet M;Gottschalk C;Skaria S;Frey H .Aliphatic hyperbranched copolyesters by combination of ROP and AB(2)-polycondensation[J].Macromolecular chemistry and physics,2005(24):2421-2428. |
| [8] | 王勇,朱延安,瞿金清.超支化聚酯的端基改性及其涂膜性能[J].化工学报,2013(06):2240-2246. |
| [9] | Gregorowicz, J.;Wawrzyńska, E.P.;Parzuchowski, P.G.;Fra?, Z.;Rokicki, G.;Wojciechowski, K.;Wieczorek, S.A.;Wi?niewska, A.;Plichta, A.;Daì?browski, K.;Tryznowski, M. .Synthesis, characterization, and solubility in supercritical carbon dioxide of hyperbranched copolyesters[J].Macromolecules,2013(18):7180-7195. |
| [10] | Fischer, A.M.;Frey, H. .Soluble hyperbranched poly(glycolide) copolymers[J].Macromolecules,2010(20):8539-8548. |
| [11] | Hanselmann R.;Frey H.;Holter D. .Hyperbranched polymers prepared via the core-dilution slow addition technique: Computer simulation of molecular weight distribution and degree of branching[J].Macromolecules,1998(12):3790-3801. |
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%