▎ 摘　　要

NOVELTY - Polyurethane hydrogel comprises 10-30 pts. wt. polyisocyanate, 40-60 pts. wt. polyol, 0.1-20 pts. wt. inorganic nano-particles, 0-1-2 pts. wt. silicon oil, 1-20 pts. wt. chain extender, 1-20 pts. wt. foamed, 0-100 pts. wt. agent, and 0.1-2 pts. wt. organic metal catalyst. USE - Polyurethane hydrogel of composite nano-particle used for e.g. agriculture, medicine, daily chemical industry, environment-friendly and desert prevention. ADVANTAGE - The composite nano-particle polyurethane hydrogel has improved mechanical strength and toughness, and prolongs the service life of microorganism culture, physical chemical purification pollution field, high water retention requirement field, and medical daily field. It has improved interface bonding strength of the two, delaying the interface of the composite gel, and is good for the transmission and homogenizing of the stress, and the mechanical property of composite gel obviously improved.