ADIABATIC REACTION KINETICS DURING FAST (RIM) POLYMERIZATION OF POLYURETHANE

罗宁; 王得宁; 应圣康; 钱夕元

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ADIABATIC REACTION KINETICS DURING FAST (RIM) POLYMERIZATION OF POLYURETHANE

更新时间：2025-12-16

- ADIABATIC REACTION KINETICS DURING FAST (RIM) POLYMERIZATION OF POLYURETHANE
- CIESC Journal Issue 6, (1995)
- 作者机构：
  
  华东理工大学材料科学研究所!上海200237,华东理工大学材料科学研究所!上海200237,华东理工大学材料科学研究所!上海200237,华东理工大学流变学研究室,上海,200237
- 作者简介：
- 基金信息：
- DOI：
  CLC： Q323
- Online First：25 December 1995，
  
  Published：25 December 1995
- 稿件说明：
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罗宁, 王得宁, 应圣康, et al. ADIABATIC REACTION KINETICS DURING FAST (RIM) POLYMERIZATION OF POLYURETHANE[J]. CIESC Journal, 1995, (6).
DOI：

罗宁, 王得宁, 应圣康, et al. ADIABATIC REACTION KINETICS DURING FAST (RIM) POLYMERIZATION OF POLYURETHANE[J]. CIESC Journal, 1995, (6). DOI：

摘要

用环氧乙烷封端的聚环氧丙烷聚醚二元醇与4

4’-二苯基甲烷二异氰酸酯(MDI)或液化改性的MDI(L-MDI)进行快速本体聚合

比较了二月桂酸二丁基锡(DBTDL)、辛酸亚锡(SnOct)、硫醇锡(UL-29)以及相应的几种锡/胺体系在绝热条件下的催化活性.用非线性优化方法求取了反应动力学参数值.结果表明

在绝热条件下本体聚合的反应活化能为130～170kJ/mol

每当量NCO官能团的反应热为61～72kJ.催化剂的活性顺序为:SnOct>DBTDL>UL-29和BDTDL/DABCO(三乙烯二胺)>UL-29/DABCO>Snoct/DABCO.反应总级数为2级

催化剂种类的变化对反应总级数基本上无影响.

Abstract

The fast (Reaction injection molding

RIM) polymerization was carried out by reacting ethylene oxide capped poly (propyl oxide) polyether diol (PPO) with 4

4-diphenyl-methylene diisocynate (MDI) or liquefied MDI (L-MDI). Catalyst activity was compared for dibutyltin dilaurate (DBTDL)

starmous octoate (SnOct)

alkyl tin mercaptide (UL-29) and corresponding organotin/triethylene diamine (DABCO) systems in the polymerization process. Kinetic parameters were calculated with a non -linear optimization technique for a simple nth order model with an Arrhenius temperature dependence. The results suggest that activation energy is 130-170 kJ/mol and reaction heat is 61-72 kJ/eq. NCO. The catalyst activity is ordered as SnOct>DBTDL>UL - 29 and DBTDL/DABCO>UL - 29/DAB-CO>SnOct/DABCO. Overall reaction order is about 2 that is not related to catalyst activity.

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