Molecular rearrangement reaction was observed during the heat treatment and the formation of hexahydric imide ring was identified.
在发泡和后处理过程中分子链发生重排反应，生成六元酰亚胺环。
Molecular rearrangement reaction was observed during the heat treatment and the formation of hexahydric imide ring was identified.
在发泡和后处理过程中分子链发生重排反应，生成六元酰亚胺环。
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