24小时热门版块排行榜    

查看: 852  |  回复: 4

qq5391297

铁杆木虫 (著名写手)


[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

» 抢金币啦!回帖就可以得到:

查看全部散金贴

已阅   关注TA 给TA发消息 送TA红花 TA的回帖

568995231

新虫 (著名写手)


★ ★ ★ ★ ★
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
已阅   关注TA 给TA发消息 送TA红花 TA的回帖

qq5391297

铁杆木虫 (著名写手)


引用回帖:
Originally posted by 568995231 at 2011-03-23 22:27:12:
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,pol ...

拜托能不能不发百度的翻译啊。。。专业点撒
3楼2011-03-24 09:32:36
已阅   关注TA 给TA发消息 送TA红花 TA的回帖

yuwang86

木虫 (著名写手)


这个翻译还是可以的
4楼2011-03-24 10:07:35
已阅   关注TA 给TA发消息 送TA红花 TA的回帖

qq5391297

铁杆木虫 (著名写手)


引用回帖:
Originally posted by yuwang86 at 2011-03-24 10:07:35:
这个翻译还是可以的

可以??我晕。。。这翻译也叫可以??
5楼2011-03-24 10:51:35
已阅   关注TA 给TA发消息 送TA红花 TA的回帖
相关版块跳转 我要订阅楼主 学员RSVSUk 的主题更新
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[基金申请] 有时候,自然基金真的不能太认真 (我的申报经验) +10 majunge000 2026-08-11 12/600 2026-08-16 08:18 by xli1984
[精细化工] 招聘 金属平磨液,抛光液研发工程师 +3 小天0311 2026-08-14 3/150 2026-08-16 07:31 by H9PLUS
[基金申请] filecode=后面第一个是大写字母 +6 wangze12014 2026-08-14 7/350 2026-08-15 20:12 by gltch
[基金申请] filecode +8 cratir 2026-08-14 12/600 2026-08-15 18:08 by zyfgau
[基金申请] 关于Filecode分析方法 +10 majunge000 2026-08-10 13/650 2026-08-15 12:26 by hanpeng972
[基金申请] 咱们一起用铁证分析2026国家社科基金中标与否 +7 启萌科技 2026-08-12 22/1100 2026-08-14 23:45 by Noways
[基金申请] 是这周出结果还是下周出结果? +4 yuleib84 2026-08-11 4/200 2026-08-14 23:05 by lfy8008
[基金申请] 奇怪,两个人的filecode固定段从头到尾一模一样 +8 布布和一二 2026-08-10 11/550 2026-08-14 14:58 by Equinoxhua
[基金申请] 应该是93bebmhtak前后十一个字符比较关键 +23 Lanmanbaby 2026-08-09 37/1850 2026-08-14 13:40 by Equinoxhua
[硕博家园] 请教兼职经验 +3 是阿文鸭 2026-08-09 3/150 2026-08-14 12:07 by HER12025
[基金申请] filecode +15 documentary 2026-08-10 17/850 2026-08-14 10:08 by kissu88
[基金申请] 我的国基提前知道中了,可是同事的操作让我实在接受不了,怎么会有这样的人 +10 家与远方 2026-08-10 15/750 2026-08-14 02:08 by 绵羊哥哥
[文学芳草园] 阿姨 +4 汪汪锅 2026-08-09 4/200 2026-08-13 19:43 by arzu_hma
[基金申请] 静等基金结果 +8 gjjjzhong 2026-08-10 21/1050 2026-08-13 17:56 by 且听虎啸
[基金申请] 重要来源:本周末出结果 +10 瞬息宇宙 2026-08-12 10/500 2026-08-13 15:46 by likettle
[基金申请] 不应该看fileCode +7 且听虎啸 2026-08-12 9/450 2026-08-13 14:27 by flydreamws
[基金申请] 结合人工智能,周易传统文化,filecode打分制来了,3分以上希望很大。 +3 Tide man 2026-08-12 4/200 2026-08-13 08:35 by ZJTJZ
[基金申请] 2019年青年基金涵评意见,大家看看几个A,几个B? +11 Tide man 2026-08-11 11/550 2026-08-13 07:35 by 撸猫猫
[基金申请] 帮忙看看fileCode +7 wwncly 2026-08-10 13/650 2026-08-11 19:36 by 冰心玉壶晴
[基金申请] 据悉今年马上要出结果了 +7 瞬息宇宙 2026-08-10 8/400 2026-08-10 12:42 by Vivilian
信息提示
请填处理意见