本人土木的用聚氨酯来做应用研究，其中一条意见如下，对高分子东西不太了解，专家什么意思？


The author must indicate which type of polyol was used (for example polyether polyol or polyester polyol and the flexible one or rigid one) and what is the chemical composition of material? And each of them have a multi grade so which grade are used in this study? beside the commercial name? The PU material can be produced in a multi series of densities based on polymers raw material components and mixing ratios. 返回小木虫查看更多