protective colloid是什么意思 protective colloid怎么读
protective colloid的用法和样例
- VAU emulsion was prepared by using acrolein-acetalized poylvinly alcohol as the protective colloid,emulsion polymerizing vinyl acetate and urea treatmelnting.
以丙烯酸对聚乙烯醇进行缩醛化处理，然后以此为保护胶体进行醋酸乙烯乳液聚合。
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