Characterization of unsaturated polyester resin cured with styrene

Delahaye, N.; Marais, Stéphane; Saiter, Jean Marc; Métayer, M. Le

doi:10.1002/(sici)1097-4628(19980124)67:4<695::aid-app12>3.0.co;2-3

Cited by 73 publications

(39 citation statements)

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“…The resin preparation and process parameters were defined in a previous experiment, considering the resin gel time. The curing was carried out in situ at a temperature of 25 °C for 24 hours, followed by first post-curing at 80 °C for 6 hours and second post-curing at 120 °C for 2 hours 18,19 .…”

Section: Preparation Of Compositesmentioning

confidence: 99%

Preparation and characterization of ramie-glass fiber reinforced polymer matrix hybrid composites

et al. 2012

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The use of ramie fibers as reinforcement in hybrid composites is justified considering their satisfactory mechanical properties if compared with other natural fibers. This study aims to verify changes in chemical composition and thermal stability of the ramie fibers after washing with distilled water. One additional goal is to study glass fiber and washed ramie fiber composites focusing on the effect of varying both the fiber length (25, 35, 45 and 55 mm) and the fiber composition. The overall fiber loading was maintained constant (21 vol.%). Based on the results obtained, the washed ramie fiber may be considered as an alternative for the production of these composites. The higher flexural strength presented being observed for 45 mm fiber length composite, although this difference is not significant for lower glass fiber volume fractions: (0:100) and (25:75). Also, by increasing the relative volume fraction of glass fiber until an upper limit of 75%, higher flexural and impact properties were obtained.

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Section: Preparation Of Compositesmentioning

confidence: 99%

Preparation and characterization of ramie-glass fiber reinforced polymer matrix hybrid composites

et al. 2012

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“…This thickness value was chosen as the maximum to run permeation experiment in a reasonable time. Then, the composite was post-cured at 80 °C (for 6 h) and at 130 °C (for 2 h) to ensure a maximum conversion of styrene and to have an optimal resin reticulation [26]. The micrograph in Figure 2 showed a typical geometry of the composites with a relatively even distribution of the fibres within the matrix width.…”

Section: Preparation Of the Compositesmentioning

confidence: 99%

Study of water behaviour of chemically treated flax fibres-based composites: A way to approach the hydric interface

Alix

Lebrun

Morvan

et al. 2011

Composites Science and Technology

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Please cite this article as: Alix, S., Lebrun, L., Morvan, C., Marais, S., Study of water behaviour of chemically treated flax fibres based composites: a way to approach the hydric interface, Composites Science and Technology (2011), doi: 10.1016/j.compscitech.2011 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. AbstractSilane (Si) and styrene (S) treatments were applied on flax fibres in order to improve their adhesion with a polyester resin and to increase their moisture resistance. The water sorption and permeation kinetics of the composites were correlated with the water sorption behaviour of untreated and treated fibres. An increase of the water barrier effect was observed in treated fibres-based composites in comparison with untreated ones. This was related to the shift-down of water solubility and to a decrease of the water diffusivity in treated fibre-based composites. In the case of (S) treatment, the presence of styrene increased the moisture resistance of the treated fibres and made compatible the fibres and the matrix. In the case of (Si) treatment, a good hydric fibre/matrix interface was obtained due to crosslinking reactions and hydrogen bonding between water molecules and free hydroxyl groups of (Si) treated fibres. In order to interpret water permeation behaviour of composite films, a simple illustrated model is suggested and represented by a schematic view.

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“…The composite material sample is cured at 25 0 C for about 20 hours. The composite mat then post-cured [14] at a temperature of 60 any excess moisture or solvents. curing, the samples are trimmed and are 1.8 mm thick.…”

Section: Fabrication Of Composite Samples With Embedded Optical Fibermentioning

confidence: 99%

“…The composite material sample is C for about 20 hours. The composite material samples are uniformly cured and cured [14] at a temperature of 60 0 C for about 8 hours to eliminate the presence of any excess moisture or solvents. The sample is then removed from the mould surface.…”

Section: Fabrication Of Composite Samples With Embedded Optical Fibermentioning

confidence: 99%

The influence of thermal expansion of a composite material on embedded polarimetric sensors

Ramakrishnan

Rajan

Semenova

et al. 2011

Smart Mater. Struct.

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Abstract. Some of the most critical issues of the influence of the thermal expansion of composite materials on embedded polarimetric sensors for measurements of strain and temperature are studied in this paper. A composite material sample with polarimetric fiber sensors embedded in two distinct layers of a multi-layer composite structure is fabricated and characterized. The polarimetric fiber sensors used in this study are based on panda type fiber and polarization maintaining photonic crystal fiber (PM-PCF). The temperature sensitivities of polarimetric fiber sensors with acrylate buffer coated and buffer stripped polarization maintaining optical fibers are measured in free space and compared to those for embedded in the composite material. It is found that a polarimetric fiber sensor with an acrylate coating embedded in the composite material shows the same response as the one in free space while the coating-stripped fiber polarimetric sensor shows significant temperature sensitivity when embedded in the composite material. This is due to the stress-induced change in birefringence created by the thermal expansion of the composite material, while in the case of a buffer coated fiber, the effect is considerably reduced as the thermal stress is largely eliminated by the buffer coating. The results obtained in this study demonstrated that thermal expansion of the composite material are the main source of error in strain and temperature measurement using embedded polarimetric fiber sensors and that more accurate strain and temperature measurements can be obtained with buffer coated polarimetric fiber sensors.

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Characterization of unsaturated polyester resin cured with styrene

Cited by 73 publications

References 0 publications

Preparation and characterization of ramie-glass fiber reinforced polymer matrix hybrid composites

Preparation and characterization of ramie-glass fiber reinforced polymer matrix hybrid composites

Study of water behaviour of chemically treated flax fibres-based composites: A way to approach the hydric interface

The influence of thermal expansion of a composite material on embedded polarimetric sensors

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