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Expandable vinyl aromatic polymers
An expandable vinyl aromatic polymer may include a matrix of a vinyl aromatic polymer, 1-10% of an expanding agent, 0.1 to 5% talc, carbon black, and 0 to 20% fillers. The expanding agent may be englobed in the matrix. The talc may have a mean diameter above about 8 μm as measured by Laser Mastersizer according to standard ISO 13320-1. The BET of the talc may be in the range 0.5-25 m2/g. The carbon black may be present in a proportion sufficient for a foamed material obtained from the expandable vinyl aromatic polymer to have a thermal conductivity λ of about 34 mW/m° K or lower. The fillers may be homogeneously distributed in the matrix.
Expandable vinyl aromatic polymers
An expandable vinyl aromatic polymer may include a matrix of a vinyl aromatic polymer, 1-10% of an expanding agent, 0.1 to 5% talc, carbon black, and 0 to 20% fillers. The expanding agent may be englobed in the matrix. The talc may have a mean diameter above about 8 μm as measured by Laser Mastersizer according to standard ISO 13320-1. The BET of the talc may be in the range 0.5-25 m2/g. The carbon black may be present in a proportion sufficient for a foamed material obtained from the expandable vinyl aromatic polymer to have a thermal conductivity λ of about 34 mW/m° K or lower. The fillers may be homogeneously distributed in the matrix.
Expandable vinyl aromatic polymers
NOWE STÉPHANE (author) / LODEFIER PHILIPPE (author) / URBANCZYK LAETITIA (author)
2015-10-27
Patent
Electronic Resource
English
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