中文摘要：

制备了一批辐射变色薄膜,利用紫外线辐照该薄膜,辐照后薄膜由无色变为蓝色,并在670nm处出现一吸收峰,吸收峰的吸光度对辐照剂量有良好的线性响应关系。对辐照后的薄膜进行了退火实验,当温度升高到45℃后,出现一新的吸收峰（500nm）,随着温度进一步升高670nm峰逐渐消失,500nm峰逐渐升高。当温度达到110℃时,670nm峰完全消失,500nm峰达到稳定,薄膜也相应地由蓝色变为粉红色。薄膜颜色的变化主要是由于其内部分子结构发生了变化：由碳碳三键共轭（无色）变为辐照后的碳碳三键和碳碳双键不在一个平面内的共轭（蓝）,最后变为退火后的碳碳三键和碳碳双键在一个平面内的共轭（粉红）。进一步的红外光谱分析也证实了对薄膜结构变化的解释。

英文摘要：

In this study, a batch of radiochromic films were prepared. The cdor of the film became blue after ir- radiating by low energy density of ultraviolet radiation using CL-1000UV cross-linking instrument. An absorp- tion peak appeared at 670nm. The absorption peak absorbance has a good linear response relationship of radia- tion dose. The annealing experiments of the film were conducted after the irradiation. When the temperature was raised to 45 ℃, a new absorption peak appeared at 545nm. Along with the further elevation of the tempera- ture, 670nm peak gradually disappeared and 545nm peak rose gradually. When the temperature reached 110℃, 670nm peak completely disappeared, 545nm peak was stabilized, and the color of the film was also correspond- ingly changed from blue to pink. The change of radiochromic film after irradiation could be expounded by infra- red spectroscopy which showed that carbon-carbon triple bond conjugated （colorless） changed into a carbon-car- bon triple bond and carbon-carbon double bond conjugate in different planes （blue） ,finally into the carbon-car- bon triple bond and carbon-carbon double bond conjugate in a same plane （red）.