Characteristics,properties and classification of water swellable rubber(WSR) were introduced,and the preparing technologies,WSR components such as water absorption resins,elastomeric matrixes,compatibilizers and the water state in WSR were discussed in detail with 42 references,and the future research prospects of WSR were proposed.
The different functional group in the spacer, the length of spacer chain and the variation of charge density of the ionic head groups will affect the water states solubilized by the reverse micelles, and can provide more information about the water states.
The paper respectively studies the water deficiency state of each nodal point by taking the six main hydrometric stations of Guide,Lanzhou,Hekouzhen,Longmen,Sanmenxia and Huayuankou situated on the main Yellow River as nodal points and through runoff frequency analysis.