长链分子对热可逆透明成像材料性能的影响  

Effects of different long-chain molecules on properties of thermally-reversible transparent imaging materials

作　　者：季长亮[1] 魏杰[1] 

机构地区：[1]北京化工大学新型高分子材料制备与加工北京市重点实验室,北京100029

出　　处：《北京化工大学学报（自然科学版）》2007年第2期169-172,共4页Journal of Beijing University of Chemical Technology(Natural Science Edition)

基　　金：国家部委预研项目(JG2002-01)

摘　　要：以乙基纤维素为基体,长链分子作为添加物,制备了可逆热透明成像材料的热敏层,研究了不同的长链分子对热敏层光学性能及透明温度范围的影响.结果表明,在以4种单组分（硬脂酸、硬脂酸酯、十八烷二羧酸、二十烷二羧酸）和4种复合组分长链分子（十八烷二羧酸和硬脂酸、二十烷二羧酸和硬脂酸、二十烷二羧酸和硬脂酸酯、硬脂酸和硬脂酸酯）分别制得的热敏层中,硬脂酸和硬脂酸酯（质量比1∶1）复合体系的综合性能最优,其在白浊状态和透明状态有着很高的透光率对比度,这使得热可逆透明成像材料有着很好的影像质量,同时,它具备较宽的显透温度范围（60～75℃）,保证了影像的写入和读出.A thermo-sensitive recording layer of a thermo-reversible transparent imaging material was prepared by mixing different long-chain molecules in ethyl cellulose solution. The optical properties and transparent temperature range of four single-component systems and four compound systems with different long-chain molecules were studied. The results showed that the system stearic acid/polyethyleneglycol distearate （PEGDS） （in a ratio 1：1） was the best of all eight systems, with a marked contrast between transmittance of its non-transparent and transparent states, giving a good imaging performance. Furthermore, it had a wide transparent temperature range （60-75℃）, which facilitates reading and writing of the imaging.

关 键 词：热敏材料 记录层 长链分子 

分 类 号：O631.24[理学—高分子化学]