利用聚四氢呋喃醚二醇(PTMG,Mn=2000)和异佛尔酮二异氰酸酯(IPDI)为原料,以二月桂酸二丁基锡(DBTDL)为催化剂,通过逐步聚合反应合成了 NCO封端的聚氨酯预聚体(PPU),通过单因素实验,根据反应过程中异氰酸酯基团和羟值含量的变化规律,优化出了PPU的合成条件:反应温度75℃,反应时间为1.5h,m(DBTDL)=0.007％(以IPDI和PTMG2000的总质量计).再通过接枝使PPU与端羟基超支化聚合物(HPAE)共聚反应制备得到一种新型超支化聚氨酯(HBPU).经过单因素实验分析方法优化出了HBPU的合成条件为反应温度75℃,反应时间4h.分别利用FT-IR和综合热分析对PPU和HB-PU的结构以及热稳定性进行了表征.
参考文献
| [1] | Flory P J .Molecular size distribution in three dimensional polymers.VI.branched polymer containing A-R-Bf 1 type units[J].Journal of the American Chemical Society,1952,74:2718-2723. |
| [2] | 王学川,强涛涛,任龙芳.超支化聚合物的研究进展及其在皮革工业中的应用前景[J].中国皮革,2005(09):14-18. |
| [3] | Anila Asif;Wenfang Shi;Xiaofeng Shen;Kangming Nie .Physical and thermal properties of UV curable waterborne polyurethane dispersions incorporating hyperbranched aliphatic polyester of varying generation number[J].Polymer: The International Journal for the Science and Technology of Polymers,2005(24):11066-11078. |
| [4] | Deka, H;Karak, N .Bio-based hyperbranched polyurethanes for surface coating applications[J].Progress in Organic Coatings: An International Review Journal,2009(3):192-198. |
| [5] | 吴川,潘春花,吴锋,白莹,叶霖,冯增国.锂离子电池聚氨酯型凝胶态聚合物电解质的研究[J].功能材料,2007(10):1672-1674,1681. |
| [6] | Cao Q;Liu PS .Hyperbranched polyurethane as novel solid-solid phase change material for thermal energy storage[J].European Polymer Journal,2006(11):2931-2939. |
| [7] | 王素娟,李文亮,白利斌,巴信武.两亲性超支化聚（酰胺-酯）对染料相转移行为的研究[J].功能材料,2012(08):997-1000. |
| [8] | Bao, F.;Shi, W. .Synthesis and properties of hyperbranched polyurethane acrylate used for UV curing coatings[J].Progress in Organic Coatings: An International Review Journal,2010(4):334-339. |
| [9] | 李绍雄;刘益军.聚氨酯树脂及其应用[M].北京:化学工业出版社,2002:161-122. |
| [10] | GB/T12009.4 1989,.多亚甲基多苯基异氰酸酯中异氰酸根含量测定方法[S]. |
| [11] | 刘益军.聚氨酯原料及助剂手册[M].北京:化学工业出版社,2008:10. |
| [12] | WANG XUECHUAN;YUAN XUZHENG;QIANG TAOTAO;REN LONGFANG .Hyperbranched Polymer Polyols:their Preparation, Modification And Use In The leather Industry[J].Journal of the Society of Leather Technologists and Chemists,2009(2):61-66. |
| [13] | 徐培林;张淑琴.聚氨酯材料手册[M].北京:化学工业出版社,2002:49. |
| [14] | Lomouml R;Plogmann F;Speier P .Selectivity of isophorone diisocyanate in the urethane reaction influence of temperature,catalysis,and reaction partners[J].Journal of Coatings Technology,2007,868(69):51-57. |
| [15] | Jena K K;Chattopadhyay D K;Raju K V S N .Synthe sized and characterization of hyperbranched polyure thane-urea coatings[J].European Polymer Journal,2010,28:1825-1837. |
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%