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| 2,4,6-三氯苯酚封闭PAPI的研究 | |
| 引用本文： | 娄春华,顾继友,邸明伟,马立群,林联晓.2,4,6-三氯苯酚封闭PAPI的研究[J].聚氨酯工业,2012,27(3):25-28. |
| 作者姓名： | 娄春华 顾继友 邸明伟 马立群 林联晓 |
| 作者单位： | 1. 东北林业大学材料科学与工程学院哈尔滨150040;齐齐哈尔大学材料科学与工程学院161006 2. 东北林业大学材料科学与工程学院哈尔滨150040 3. 齐齐哈尔大学材料科学与工程学院161006 |
| 基金项目： | 国家自然科学基金资助项目 |
| 摘 要： | 以2,4,6-三氯苯酚作为多亚甲基多苯基多异氰酸酯(PAPI)的封闭剂制备可低温解封的封闭异氰酸酯。讨论了nOH/nNCO、反应温度和反应时间对PAPI封闭反应的影响,并对封闭产物进行了FT-IR、1H-NMR、13C-NMR和DSC分析。结果表明,当nOH/nNCO为1.1、温度为80℃、时间为3 h时,封闭效果较好;加入催化剂可缩短封闭反应时间;封闭产物的初始解封温度约为80℃。 |
| 关 键 词： | 多亚甲基多苯基多异氰酸酯(PAPI) 2 4 6-三氯苯酚 封闭 解封闭 |
Study on Trichlorophenol Blocked Polymethylene Polyphenyl Isocyanate |
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| Lou Chunhua , Gu Jiyou , Di Mingwei , Ma Liqun , Lin Lianxiao.Study on Trichlorophenol Blocked Polymethylene Polyphenyl Isocyanate[J].Polyurethane Industry,2012,27(3):25-28. | |
| Authors: | Lou Chunhua Gu Jiyou Di Mingwei Ma Liqun Lin Lianxiao |
| Affiliation: | 1. Material Science and Engineering College of the Northeast Forestry University, Harbin 150040, China) (2. Material Science and Engineering College of Qiqihar University, 161006, China) |
| Abstract: | A blocked product which could deblocked at low temperature was synthesized by 2,4,6-trichloro- phenol （TCP） as blocking agent for polymethylene polyphenyl isocyanate（PAPI）. The effects of nOH/nNCO, temperature, time on PAPI blocking reaction were discussed. The blocked product was characterized by FT-IR, 1H NMR, 13 C-NMR and DSC. The results showed that the optimal blocking conditions were nOH/nnco = 1.1 at 80℃for 3 h, the catalysts of organic tin could reduce the blocking reaction time. Thermal analysis showed the blocked product started to debloek at about 80 ℃. |
| Keywords: | PAPI 2 4 6-trichlorophenol（TCP） blocking deblocked |
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