Rubber absorbent material is a new type of functional polymer materials have a unique elastic sealing sealing and water-swelling to the dual characteristics of the water seal, seal waterproof concern has broad application prospects this year.
Starch wide variety of sources, inexpensive, biodegradable, is an environmentally friendly material. Modification technology in the field of rubber, starch is used as a reinforcing agent can be a large number of studies have been carried out. Starch-based polymer is a multi-Ling, differences between its structure and polarity and rubber, both poor compatibility, so the starch used in the rubber industry key is to make it finely dispersed in the rubber collective and strong interfacial adhesion. Zhang Liqun present invention a method (referred to as emulsion coprecipitation method, LCM method), a starch, a water-soluble rubber latex blend - Condensation of this method the starch to significantly improve the dispersibility in the rubber body. Starch molecular chain containing more antelope group, having a hydrophilic, both reinforcement and a hydrophilic dual nature of the starch. Liang Guihua starch / SBR composites water absorption, results show that starch alone, low water absorption of the composite. Cross-linked polyacrylic acid sodium salt has a high water absorption, high water absorption rate and excellent water absorption stability. Any of the literary world by in situ synthesis and polymerization of the acrylate the the modified NBR, prepared a high expansion rate of the absorbent material.