The influence of hydrophilic segment chain length of the polyethylene (PEG) on contact angle,water-vapor permeability,water-absorbing capacity and mechanical properties of polyurethane film was investigated.
探讨了聚乙二醇(PEG)亲水链段的分子链长,对聚氨酯薄膜表面接触角、透气性、吸水率和力学性能的影响。
The synthesis of the polyester-polyol poly-segment copolymers was studied , and a copolymer was synthesized and theoretically evaluated for its co-crystalline and hydrophilic segments and its structural characteristics by the modern analytic means such as IR, GPC and DSC.
合成了聚酯-聚醚多嵌段型共聚物,经共聚物的共晶链段和亲水链段的理论估算,合成了一种聚酯-聚醚型亲水抗静电剂。
The combined action of the special hydrophilic and hydrophobic segments helps to form a certain association network in the emulsion,which has greatly enhanced the thickening effect.
另外,增稠剂使用中内部和外部影响因素的变化如分子量的大小、亲水和亲油链段的选择、以及表面活性剂的加入都会影响到其增稠效果。