Composite material comprising core/shell particles

Details Composite material comprising core/shell particles Composite material comprising core/shell particles

C - Chemistry, Metallurgy

08

L

C08L 51/00 (2006.01) C08F 257/02 (2006.01) C08F 265/04 (2006.01)

Patent

CA 2489720

The invention relates to composite materials having an optical effect, containing at least one moulded body which is essentially made of core- covering particles. The covering thereof forms a matrix and the core thereof is essentially solid and has an essentially monodisperse size distribution. There is a difference between the refractive indices of the core material and the covering material and at least one further material which determines the mechanical properties of the composite. The invention also relates to a method for producing composite materials. The inventive materials have a colouring effect, according to the observation angle, and freely adjustable mechanical properties.

L'invention concerne des matériaux composites à effet optique, contenant au moins un corps façonné qui est constitué essentiellement de particules de noyau et de particules d'enveloppe, dont l'enveloppe forme une matrice et dont le noyau est sensiblement solide, et qui présente une répartition granulométrique sensiblement uniforme. Selon l'invention, l'indice de réfraction du matériau de noyau et celui du matériau d'enveloppe sont différents, et au moins un autre matériau détermine les propriétés mécaniques du composite. L'invention concerne également un procédé pour la production desdits matériaux composites. Lesdits matériaux présentent un effet chromatique, qui dépend de l'angle d'observation, ainsi que des propriétés mécaniques pouvant être ajustées librement.

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