expand chain agent的用法和樣例：
例句
- The effects of different chain extenders and different contents on polyurethane emulsions from polyether and polyester have been studied.
研究了不同擴鏈劑及其用量對聚醚型和聚酯型聚氨酯乳液的影響。 - By intercalating chain extender, the self emulsifying anionic waterborne polyurethane emulsions which have the block structure have been prepared.
通過(guò)自乳化聚合引入低分子擴鏈劑制得具有嵌段結構的陰離子型水性聚氨酯乳液。
