Heat-activatable free-radical initiators and composite material which comprises magnetic particles

A technology of composite materials and initiators, applied in the direction of silver compounds, silver compounds, iron compounds, etc., can solve the problems of uneconomical energy input, heating, affecting properties, etc.
CN102459355AInactive Publication Date: 2012-05-16EVONIK DEGUSSA GMBH +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
EVONIK DEGUSSA GMBH
Publication Date
2012-05-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

Composite material comprising - one or more heat-activatable free-radical initiators selected from the group consisting of organic peroxides and / or initiators having labile carbon-carbon bonds and particles which have a core-shell structure and the core of which comprises one or more magnetic materials, while the shell comprises silicon dioxide.
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Description

technical field

[0001] The present invention relates to a composite material comprising a thermally activatable free radical initiator and magnetic particles. The invention also relates to a method for the preparation of this material, and its use. Background technique

[0002] The use of thermally activatable free radical initiators for crosslinking or curing of polymers is well known and routine practice. Organic peroxides are most important here. The crosslinking process is heat-dependent, which has the disadvantage that the entire composition to be crosslinked must be heated, resulting in uneconomical energy input. Furthermore, the entire composition to be crosslinked is subjected to thermal stress, which adversely affects its properties. Finally, mention should also be made of the sensitive nature of peroxides, which means that special precautions must be taken during storage and crosslinking.

[0003] It is therefore one of the objects of the present invention to p...

Claims

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