When the polycondensate of PEG has higher fraction in monomers and proper molecular weight, the product copolymer will have better sand liquid flowability and fine rheology performance.

• 当聚合时PEG缩聚物的比例较大和PEG分子一定长时，产物有好的净浆流动性能和一定的坍落度保持时间.