Concept

Polyester

Publications associées (182)

Structural behavior and durability of multifunctional fiber-reinforced polymer components

In the context of sustainable development, building insulation represents a major concern as a means of increasing energy efficiency. In order to comply with new norms such as the Passive House standard, locations where load-bearing components must penetra ...

EPFL2006

Manufacturing cost comparison of thermoplastic and thermoset RTM for an automotive floor pan

Véronique Michaud, Martyn Douglas Wakeman

Two resin transfer moulding (RTM) processes have been examined for automotive body-in-white (BIW) structures. An epoxy system was compared with a novel reactive polyamide 12 (PA12) system via characterisation of reaction kinetics and the production of carb ...

2006

Reaction-induced phase separation in a PVAc/polyester blend

Véronique Michaud, Xavier Bulliard

In blends of unsaturated polyester (UP), poly (vinyl acetate) (PVAc), and styrene, a reaction-induced phase separation occurs upon curing that is due to the crosslinking between styrene and the UP molecules. The evolution of the morphology was observed by ...

2006

Dynamic capillary effects in liquid composite moulding with non-crimp fabrics

Véronique Michaud

A technique is presented to measure the capillary pressure drop DPg during infiltration of non-crimp fabrics by a liquid matrix. Three types of liquids are used: polyethylene glycol (PEG) dissolved in water, a thermoset epoxy resin and a reactive thermopla ...

2006

Stamp forming of carbon fibre/PA12 composites - a comparison of a reactive impregnation process and a commingled yarn system

Pierre-Etienne Bourban, Martyn Douglas Wakeman

Two forms of carbon fibre reinforced polyamide 12 (PA12) were compared during non-isothermal stamp forming. The first was a stretch broken commingled yarn woven into a fabric, studied at three initial preconsolidation levels. The second was produced by in ...

2006

Formation of aminosilane-oxide interphases

Véronique Michaud, Yves Leterrier, Gabrielle Pax

The aim of this work is to understand the interactions and interphase formation mechanisms between a liquid aminosilane oligomer (γ -APS) and glass, steel or gold surfaces as a function of the pH of the liquid aminosilane. When basic liquid γ -APS (pH 11.4 ...

2006

Wettability of Glass Fibers in Reactive Thermoplastic/Polyester Blends: Comparison between Compatible and Incompatible Thermoplastics

Véronique Michaud, Xavier Bulliard

The evolution of morphology of reactive thermoplastic/unsaturated polyester blends at the surface of glass fibers is investigated during curing. The study focuses on two different types of thermoplastics, incompatible and compatible respectively with the p ...

2005

Phase separation at the fiber-matrix interface in composites based on a thermoplastic/polyester blend

Véronique Michaud, Xavier Bulliard

A study of the microstructure developing at the surface of glass fibers in a poly(vinyl acetate) (PVAc)/polyester blend is presented. Three different experimental methods are used: a technique based on the Wilhelmy method to measure the wettability of the ...

2005

Graded glass mat reinforced polypropylene

Véronique Michaud

In the impregnation process, when pressure is applied, the dry fiber preform is first compressed and then unloads as the matrix flows within the pores. It has been shown earlier that for glass mat-reinforced thermoplastic (GMT) materials, the time to provi ...

2005

Aminosilanes and hyperbranched polymers for adhesion tailoring between metallic oxides and polyethylene

Bonding between polyolefins and steel is widely found in applications as diverse as steel wire/cord reinforced polymers, and automotive components where steel and thermoplastics are commonly used. As polyolefins are highly unreactive, because of their low ...

EPFL2005

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