MECHANICAL CHARACTERISTICS OF SEALANTS BASED ON POLYURETHANE LIGNIN POLYBLENDS

被引：4

作者：

FELDMAN, D ^{[1
]}

LACASSE, M ^{[1
]}

机构：

[1] NATL RES COUNCIL CANADA,INST RES CONSTRUCT,OTTAWA K1A 0R6,ONTARIO,CANADA

来源：

JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY | 1994年 / 8卷 / 09期

基金：

加拿大自然科学与工程研究理事会;

关键词：

MECHANICAL CHARACTERISTICS; SEALANT; POLYURETHANE LIGNIN;

D O I：

10.1163/156856194X00843

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Previously, different characteristics such as curing, morphology, miscibility and swelling have been evaluated in studies of polyurethane-lignin polyblends. In the present paper the mechanical properties of the same polyblends are investigated and compared with those of polyurethane filled with some mineral fillers. The effect of these fillers and lignin on the polyurethane sealant curing kinetics and the effect of their packing characteristics on the mechanical properties are considered and discussed. The research showed that the addition of mineral fillers or different kinds of lignins increases the Young modulus. The enhancement of the mechanical characteristics is more evident for Sillitin/Titanox (clay/TiO2) filled polyurethane than for lignin filled polyurethane. This mineral filler combination increases both stress and strain, which is attributed to its finer average particle size.

引用

页码：957 / 969

页数：13

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