Cross-linking kinetics and swelling behaviour of aliphatic polyurethane

被引：101

作者：

Li, S ^{[1
]}

Vatanparast, R ^{[1
]}

Lemmetyinen, H ^{[1
]}

机构：

[1] Tampere Univ Technol, Inst Mat Chem, FIN-33101 Tampere, Finland

来源：

POLYMER | 2000年 / 41卷 / 15期

关键词：

cross-linking kinetics; polyurethane; swelling behaviour;

D O I：

10.1016/S0032-3861(99)00785-5

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The curing processes of three types of aliphatic polyurethanes (PUs) were monitored through measuring changes in the IR absorption of the isocyanate group. Two exponential fittings were used to present the decrease of the absorption band of the isocyanate group as a function of the curing time. The curing process contained chemically and diffusionally controlled periods. According to a cross-linking kinetics analysis, one of the PUs followed a first-order, and two others a second-order reaction. The swelling behaviour of the aliphatic PUs was described with a gel fraction and the degree of the cross-linking after the samples cured. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：5571 / 5576

页数：6

共 30 条

[1]

Akutsu F, 1998, J APPL POLYM SCI, V69, P1737, DOI 10.1002/(SICI)1097-4628(19980829)69:9<1737::AID-APP7>3.0.CO

[2]

2-C

[3]

[Anonymous], 2018, INTRO PERCOLATION TH

[4] Studies of cure schedule and final property relationships of a commercial epoxy resin using modified imidazole curing agents [J].

Barton, JM ;

Hamerton, I ;

Howlin, BJ ;

Jones, JR ;

Liu, SY .

POLYMER, 1998, 39 (10) :1929-1937

[5]

Choi HS, 1998, J APPL POLYM SCI, V69, P799, DOI 10.1002/(SICI)1097-4628(19980725)69:4<799::AID-APP19>3.0.CO

[6]

2-K

[7]

He WD, 1998, J APPL POLYM SCI, V69, P619, DOI 10.1002/(SICI)1097-4628(19980718)69:3<619::AID-APP22>3.0.CO

[8]

2-M

[9]

HERRMANN H, 1986, J PHYS REV, V153, P136

[10]

LISAARDO N, 1998, J APPL POLYM SCI, V70, P1931

← 1 2 3 →