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Thermal stability of cyanate ester modified silicone rubber as matrix of heat-resistant composite coatings / Qing Wen in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 6 (11/2023)
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Titre : Thermal stability of cyanate ester modified silicone rubber as matrix of heat-resistant composite coatings Type de document : texte imprimé Auteurs : Qing Wen, Auteur ; Xiao-Jun Yang, Auteur ; Ding-Yong He, Auteur ; Han-Guang Fu, Auteur Année de publication : 2023 Article en page(s) : p. 2113-2123 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Allongement à la rupture
Caractérisation
Elastomères silicones vulcanisables à chaud
Ester de cyanate
Formulation (Génie chimique)
Matrices
Résistance à la traction
Résistance thermique
Revêtements -- Propriétés mécaniques
Revêtements organiques
Stabilité thermiqueIndex. décimale : 667.9 Revêtements et enduits Résumé : Heat-resistant composites are widely used as high-temperature engineering materials. Polymer materials are often used as the matrix of the composites due to their good processability and adhesion to different substrates. In order to improve the thermal stability of silicone rubber (SR) matrix, CE/SR composites were prepared from cyanate ester (CE) prepolymer and silicone. The chemical structure, morphology and thermal stability of the obtained CE/SR composites were analyzed by Fourier transform infrared spectroscopy, scanning electron microscopy and thermogravimetric analysis (TGA). SEM images of the cross sections of CE/SR show that a two-phase microstructure consisting of continuous SR and dispersed CE can be formed by successively curing of silicone and CE prepolymer. TGA analysis results show that CE modified SR has higher heat resistance than SR, and the thermal stability of CE/SR composites is better than that of pure SR and pure CE in the temperature range of 300–500 °C. The composite of KL and CE/SR was prepared to further improve the heat resistance. Note de contenu : - EXPERIMENTAL : Experimental materials - Preparation of CE/SR and KL/CE/SR - Characterization
- RESULTS AND DISCUSSION : FTIR analysis of CE/SR samples - Microstructure of CE/SR and KL/CE/SR samples - Thermal stability of CE/SR and KL/CE/SR samples - Mechanical property of CE/SR samples - Adhesion of CE/SR and KL/CE/SR to the surface of steel
- Table 1 : Formulation compositions (phr by mass) of CE/SR and KL/CE/SR samples
- Table 2 : TGA analysis results of CE, SR, CE/SR and KL/CE/SR
- Table 3 : The Shore hardness of SR and CE/SR samples before and after heat treatment
- Table 4 : Tensile strength and elongation at break of CE/SR samples (without heat treatment)
- Table 5 : Adhesion gradings of CE, SR, CE/SR and KL/CE/SR on the surface of steelDOI : https://doi.org/10.1007/s11998-023-00808-0 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-023-00808-0.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40186
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