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以聚乙烯吡啶的化学反应制备了含正负离子对结构单元的两性聚合物ＣＡＰＶＰ。该聚合物对粘土悬浮体系具有较好的絮凝性能，可用于油田污水处理。文中还对ＣＡＰＶＰ的絮凝机理作了初步探讨。
The amphoteric polymer CAPVP with positive and negative ion pair structure units was prepared by the chemical reaction of polyvinylpyridine. The polymer has good flocculation performance on clay suspension system and can be used for oilfield wastewater treatment. In the paper, the flocculation mechanism of CAPVP was also discussed.