Thermal and Viscoelastic Features of New Nanocomposites Based on a Hot-Melt Adhesive Polyurethane and Multi-Walled Carbon Nanotubes

被引：47

作者：

Fernandez, Mercedes ^{[1
,2
]}

Landa, Maite ^{[1
,2
]}

Eugenia Munoz, Ma ^{[1
,2
]}

Santamaria, Anton ^{[1
,2
]}

机构：

[1] Univ Basque Country UPV EHU, Fac Chem, Dept Polymer Sci & Technol, San Sebastian 20080, Spain

[2] Univ Basque Country UPV EHU, Fac Chem, Polymer Inst Polymat, San Sebastian 20080, Spain

来源：

MACROMOLECULAR MATERIALS AND ENGINEERING | 2010年 / 295卷 / 11期

关键词：

adhesives; carbon nanotubes; crystallization; polyurethanes; rheology; NONISOTHERMAL CRYSTALLIZATION KINETICS; PRESSURE-SENSITIVE ADHESIVES; IN-SITU POLYMERIZATION; ISOTHERMAL CRYSTALLIZATION; RHEOLOGICAL PROPERTIES; MECHANICAL RELAXATION; GLASS-TRANSITION; BEHAVIOR; COMPOSITES; POLYCARBONATE;

D O I：

10.1002/mame.201000176

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Novel nanocomposites prepared by melt mixing of MWCNTs in a hot-melt adhesive PCL-based polyurethane are investigated. The nucleating effect of MWCNTs and the confinement they cause to polymer chains are considered. The broadening of the glass transition is indicative of a growth of the immobilized amorphous fraction adhered to MWCNTs. In the molten state the formation of a combined polymer/MWCNT network is observed. Practical requisites of hot melt adhesives, such as adequate melting temperature, crystallization degree, and viscosity are preserved when MWCNTs are added. Improvement of strength at roomtemperature and welding rate during cooling, are observed.

引用

页码：1031 / 1041

页数：11

共 75 条

[1] Cure behavior of epoxy/MWCNT nanocomposites: The effect of nanotube surface modification [J].