|
|||||
|
|
Evolution of the coefficient of thermal expansion of a thermosetting polymer during cure reaction |
|
| Authors: | Eric Leroy,Jé rô me Dupuy,Gé rard Seytre |
| Affiliation: | a Centre des Matériaux de Grande Diffusion, Ecole des Mines d'Alès, 6 avenue de Clavières, 30319 Alès Cedex, France b Laboratoire des Matériaux Macromoléculaires (LMM-IMP) bat. J.Verne, INSA de Lyon, 20 av. A.Einstein, 69621 Villeurbanne Cedex, France c Ecole Supérieure de Plasturgie, BP 708, 01108 Oyonnax, France d Laboratoire des Matériaux Polymères et des Biomatériaux, bat. ISTIL, Université Claude Bernard, 15 Bd. André Latarget, 69622 Villeurbanne Cedex, France |
| Abstract: | The evolution of the coefficient of thermal expansion (CTE) of a thermosetting polymer during cure reaction is an important parameter for industrial applications such as composite processing since it influences the development of internal stresses in the material. The CTE being almost impossible to measure on a reacting thermoset, we propose to use an indirect method based on the modelling of ionic conductivity by a modified WLF equation, allowing to calculate the evolution of CTE from dielectric spectroscopy measurements. This method is applied to a dicyanate ester thermosetting polymer, leading to encouraging results both qualitatively and quantitatively. |
| Keywords: | Dielectric spectroscopy Thermoset Thermal expansion |
| 本文献已被 ScienceDirect 等数据库收录！ | |