The implicit finite difference and fourth order Runge-Kutta method are used both to solve the heat transfer problem in the pultrusion reaction and to calculate the temperature and conversion distributions within a thermoset composite profile. The aim of our work is to study the influence of a rubbery phase added to the epoxy matrix in production conditions. The results have shown that the rubber modified systems have a low exothermic temperature peak value, so that neither the amount of cured resin nor the final product properties are limited. First of all we will show that the phase transition (gelation and vitrification) zones within the die change at varying the amount of rubber in the resin. Then the relationship between the position and of these zones and the resin systems will be discussed. At the end we will calculate the residual thermal stresses for all the investigated fibre/resin systems, evidencing their reduction when the rubber amount increases in the epoxy blend.

CALABRESE L, VALENZA A (2007). Modelling of phase transitions and residual thermal stress of CTBN rubber modified epoxy resins during a pultrusion process. INTERNATIONAL POLYMER PROCESSING, 22, 132-139 [10.3139/217.0133].

Modelling of phase transitions and residual thermal stress of CTBN rubber modified epoxy resins during a pultrusion process

VALENZA, Antonino
2007-01-01

Abstract

The implicit finite difference and fourth order Runge-Kutta method are used both to solve the heat transfer problem in the pultrusion reaction and to calculate the temperature and conversion distributions within a thermoset composite profile. The aim of our work is to study the influence of a rubbery phase added to the epoxy matrix in production conditions. The results have shown that the rubber modified systems have a low exothermic temperature peak value, so that neither the amount of cured resin nor the final product properties are limited. First of all we will show that the phase transition (gelation and vitrification) zones within the die change at varying the amount of rubber in the resin. Then the relationship between the position and of these zones and the resin systems will be discussed. At the end we will calculate the residual thermal stresses for all the investigated fibre/resin systems, evidencing their reduction when the rubber amount increases in the epoxy blend.
2007
CALABRESE L, VALENZA A (2007). Modelling of phase transitions and residual thermal stress of CTBN rubber modified epoxy resins during a pultrusion process. INTERNATIONAL POLYMER PROCESSING, 22, 132-139 [10.3139/217.0133].
File in questo prodotto:
File Dimensione Formato  
2007-IPP-Modelling of Phase Transitions and Residual Thermal Stress of CTBN Rubber Modified Epoxy Resins During a Pultrusion Process.pdf

Solo gestori archvio

Dimensione 623.41 kB
Formato Adobe PDF
623.41 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/4182
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? 0
social impact