| 查看: 879 | 回复: 4 | |||
| 当前只显示满足指定条件的回帖,点击这里查看本话题的所有回帖 | |||
[交流]
求翻译一段英文
|
|||
| Two series of N-methylaniline-blocked isocyanates based on monomeric diisocyanates such as 4,4′-methylene bis(phenyl isocyanate), toluene-2,4-diisocyanate, isophorone diisocyanate and 1,6-diisocyanato hexane and their NCO terminated polyurethane prepolymer (polyisocyanates) were prepared and characterized thoroughly by FTIR, 1H NMR, 13C NMR and EI-Mass spectroscopic methods. The blocking reaction of N-methylaniline with aromatic isocyanates and aromatic polyisocyanates occur faster when compared to the aliphatic isocyanates. The deblocking reactions of blocked isocyanates were carried out under dynamic and isothermal conditions using hot-stage FTIR spectrophotometer. The dynamic method was used to determine the deblocking temperature, and the isothermal method was used to calculate kinetics and thermodynamics parameters. Cure reactions of blocked isocyanates with hydroxyl-terminated polybutadiene were also followed to establish the structure–property relationship of the N-methylaniline-blocked isocyanates. The deblocking studies of blocked isocyanates reveal that the aromatic isocyanates undergo deblocking easily compared to aliphatic isocyanates. The rate of deblocking reaction of N-methylaniline-blocked aromatic polyisocyanates was found to be higher compared to N-methylaniline-blocked aromatic monomeric diisocyanate adducts. On the other hand, this trend was just reverse in the cure-reaction studies. The dissolution behavior of N-methylaniline-blocked isocyanates in Terathane-2000, polypropylene glycol-2000, polycaprolactone diol-2000 and hydroxyl-terminated polybutadiene-2500 was also studied and found that all adducts are soluble in these polyols. |
» 猜你喜欢
售SCI一区T0P文章,我:8O.55.1.O.54,科目全,可伽急
已经有3人回复
售SCI一区T0P文章,我:8.O55.1.O.54,科目全,可十急
已经有3人回复
售SCI一区T0P文章,我:8.O.55.1.O.5.4,科目全,可+急
已经有3人回复
上海工程技术大学激光智能制造课题组招收博士研究生
已经有6人回复
售SCI一区T0P文章,我:8.O55.1.O.54,科目全,可十急
已经有3人回复
售SCI一区T0P文章,我:8.O55.1.O.54,科目全,可十急
已经有3人回复
售SCI一区文章,我:8.O.55.1.O.54,科目齐全,可伽急
已经有3人回复
售SCI一区文章,我:8O5.5.1.O5.4,科目全,可伽急
已经有3人回复
售SCI一区T0P文章,我:8O.55.1.O.54,科目全,可伽急
已经有3人回复
售SCI文章,我:8O5.5.1.O.54,科目齐全,可+急
已经有3人回复
» 抢金币啦!回帖就可以得到:
项目结题验收,希望一切顺利
+1/970
华南理工大学 光电材料方向 王竣可教授课题组招聘博士后、博士生及科研助理
+5/415
急招科研助理/博士后
+2/124
招收 哈工大深圳﹣大湾区大学联合培养博士生1名,2027年入学
+1/99
[2027 考博] 上海・|激光焊接 / 增材制造 / 机器人智能装备 招博士
+1/91
福建农林大学王志刚教授团队诚聘青年教师、博士后、博士生 - 材料、化学、力学、高分
+1/39
天津大学 刘浩业教授团队 招收27级博士生
+1/35
中山大学中法核工程与技术学院放射生物学课题组招收推免生
+1/34
中山大学潘越教授课题组2027级推免硕士研究生招生 新增一个专业医学技术名额
+1/20
中科院大连化学物理研究所刘生忠研究员团队招收联合培养博士
+1/18
中科院大连化学物理研究所刘生忠研究员团队招收博士后
+1/17
中国科大-合肥国家实验室冷原子量子网络团队招聘启事
+2/16
同样的抗体,为什么你的mIHC背景总比文献高?从固定到成像的全套排查手册
+1/11
【生物材料与生物打印专题征稿】Scopus期刊,免APC
+1/5
无人机方向 博士后与青年教师招聘公告
+1/4
口腔特刊客座招募客编Biofunctional Materials牙科生物功能材料专题,Scopus期刊
+1/3
奥克兰大学机械与机械电子系 Simon Bickerton 教授 招2名CSC博士
+1/3
北理工集成电路杰青团队 | 诚招科助理
+1/3
北京理工大学-集成电路与电子学院杰青团队-招博士后
+1/1
药物毒理肾损伤相关生物标志物蛋白因子定量检测技术解析
+1/1
5楼2011-03-24 10:51:35
★ ★ ★ ★ ★
ringzhu(金币-5): 本版严禁机器翻译! 2011-04-02 12:05:50
ringzhu(金币-5): 本版严禁机器翻译! 2011-04-02 12:05:50
|
两种系列N-methylaniline-blocked monomeric异氰酸酯等的基础上,diisocyanates 4′-methylene四苯基异氰酸酯),国际清算银行(4-diisocyanate toluene-2,isophorone,6-diisocyanato二异氰酸酯和1 /环己烷和他们,polyisocyanates聚氨酯预聚物(兵种)终止有准备,并采用红外光谱表征彻底、核磁共振氢谱、碳谱和EI-Mass光谱方法。N-methylaniline阻断与异氰酸酯反应,芳香的polyisocyanates芳香的速度发生,相比于脂肪族异氰酸酯。异氰酸酯的反应受阻的去进行了等温条件下的动态,利用傅里叶变换红外光谱hot-stage分光光度计。动态的方法被用来确定去温度、等温法计算动力学和热力学参数。异氰酸酯与阻碍的治疗反应摘要p... 仅供参考 |
2楼2011-03-23 22:27:12
3楼2011-03-24 09:32:36
4楼2011-03-24 10:07:35









回复此楼