| 摘要 |
The present invention relates to a method of preparing a transparent moulding comprising a blend of a first thermoset polymeric material forming the matrix of said moulding, and of a second polymeric material dispersed within said first material, said method comprising at least the following stages: i) preparation of a liquid polymerizable mixture by dissolving said second polymeric material in a thermosetting polymerizable composition that is a precursor of said first thermoset polymeric material, ii) filling of a mould with the liquid polymerizable mixture obtained in stage i), iii) cooling of the liquid polymerizable mixture in the mould to a temperature T less than or equal to 0° C., iv) initiation of the polymerization of said cooled liquid polymerizable mixture at a temperature T' less than or equal to 0° C., v) continuation of the polymerization of said liquid polymerizable mixture until a hardened blend of polymers is obtained, and vi) removal of the moulding formed from said blend of polymers from the mould. The invention also relates to a transparent moulding obtainable by such a method comprising a blend of polymers, at least one of which is a thermosetting polymer.
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