Glycolysis of rigid polyurethane foam under various reaction conditions

被引：45
|
作者：
Murai, M [1 ]
Sanou, M [1 ]
Fujimoto, T [1 ]
Baba, F [1 ]
机构：
[1] Mitsubishi Electr Corp, Adv Technol R&D Ctr, Amagasaki, Hyogo 6618661, Japan
来源：
JOURNAL OF CELLULAR PLASTICS | 2003年 / 39卷 / 01期
关键词：
glycolysis; polyurethane foam; dissolution time; molecular weight; catalyst concentration; particle size;
D O I：
10.1177/002195503031021
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The dissolution time of rigid polyurethane foam (PUF) under various glycolysis conditions was examined in a detailed investigation of the glycolysis reactivity of PUR PUF dissolution depended on the molecular weight of glycol. Dipropylene glycol and tetraethylene glycol dissolved PUF in the shortest time among polypropylene glycols and polyethylene glycols, respectively. PUF dissolution time was reduced to one-half for each 10degreesC rise in the range of 170-200degreesC. Also PUF dissolution time was inversely proportional to KOH (catalyst) concentration. Dibutyltindilaurate concentration had less influence on PUF dissolution time than KOH concentration. Smaller PUF particles dissolved in a shorter time. Especially, the initial glycolysis conversion of PUF was proportional to the total surface area of PUF particles.
引用
收藏
页码：15 / 27
页数：13
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