This paper presents a study on synthesis of a hydrogel material hy high dose rate electron beam produced by accelerator. The main results are as follows:1. The polymerization system produces the gel when the conversion attains approximately 20%.The radiation doae which completes this kinetic process is only 0.5-2.0Mrad

in other words

the radition time requires only 1-4min.2. The relationship between the initial rate of polymerization (V) and dose rate (I) are as follows:HEMA+EGDMA system: V_0∞I~(0.53) HEMA +EHMA+EGDMA system: V_0∞I~(0.48) HEMA+ EHMA+ EGDMA + RH system: V-0∞I~(0.5)3. When the compounding includes the hydrophobie monomer such as butyl acrylate

the mechanical strength of soft lens made from the hydrogel material is increased while the water absorption is decreased.4. The hydrogel material have been used for the manufacture of the soft contact lenses.