Relationship between macromolecular network and fatigue properties of unfilled polychloroprene rubber
Article dans une revue avec comité de lecture
Date
2021Journal
Polymer Degradation and StabilityRésumé
Fatigue life of unfilled polychloroprene rubber is characterized in fully relaxing (R = 0) and non-relaxing conditions (R = 0.2) for more than 15 network structures. Network changes are induced by thermal oxidation ageing of the rubber and characterized especially in terms of crosslink density. For the first time, in the case of unfilled elastomers, we show that an increase in crosslink density leads to a decrease in fatigue life, which cannot be attributed to large changes in strain-induced crystallization processes. The results obtained here are used to determine the relationship between network structure and fatigue properties. In fully relaxing conditions, it is possible to predict fatigue lifetime by considering crosslink density using a theoretical energetic approach. Nevertheless, the same approach does not work in non-relaxing conditions. In the latter case, a new empirical relationship is proposed to link fatigue life to the crosslink density of rubber.
Fichier(s) constituant cette publication
Cette publication figure dans le(s) laboratoire(s) suivant(s)
Documents liés
Visualiser des documents liés par titre, auteur, créateur et sujet.
-
Article dans une revue avec comité de lectureBARDIN, Antoine; LE GAC, Pierre-Yves; ALBOUY, Pierre-Antoine; BINDI, Hervé; FAYOLLE, Bruno (2022-03-25)By tuning hydrolysis duration of a segmented ether-amide copolymer (PEBA), a range of specimens presenting various macromolecular structures has been produced. Knowing that scissions occur predominantly at the bond between ...
-
Article dans une revue avec comité de lectureThermal oxidation in air at atmospheric pressure, in the 80-140 °C temperature range and in oxygen at 100 °C in the 0.02-3 MPa pressure range, of unvulcanized, unstabilized, unfilled polychloroprene (CR) has been characterized ...
-
Article dans une revue avec comité de lectureWater sorption has been studied gravimetrically for polychloroprene rubber samples, first at a fixed hygrometric ratio (98% HR) and several temperatures (25, 40, 60 and 80 °C) for samples of 1.8 and 3.8 mm thickness (Constant ...
-
Role of strain induced crystallization and oxidative crosslinking in fracture properties of rubbers Article dans une revue avec comité de lectureLE GAC, Pierre Yves; BROUDIN, Morgane; ROUX, Gérard; VERDU, Jacques; DAVIES, Peter; FAYOLLE, Bruno (Elsevier, 2014)Tensile properties and crack propagation properties, especially critical strain energy release rate in mode I, GIC, have been used to investigate fracture properties of elastomers and their relationships with microstructure. ...
-
Article dans une revue avec comité de lectureLE GAC, Pierre Yves; CELINA, Mathew C.; ROUX, Gérard; VERDU, Jacques; DAVIES, Peter; FAYOLLE, Bruno (Elsevier, 2016)The oxidative ageing in the range of 60 °C–140 °C of sulfur vulcanized polychloroprene has been studied by FTIR spectroscopy (double bond consumption), modulus changes and oxygen absorption measurements. Experiments were ...