作　　者： ; ; ; ; ; ;

机构地区： 广东工业大学轻工化工学院

出　　处： 《精细化工》 2005年第2期95-98,共4页

摘　　要： 采用固相法合成了结晶紫-硼酸系列可逆热致变色颜料。研究结果表明,m(结晶紫)∶m(硼酸)=1∶(200～600),研制的颜料在60～65℃时由紫红色开始变为蓝色,加热到95～100℃时变为黄色,冷却时恢复为紫红色,复色时间小于3min。重复进行20次实验,颜料的色泽、变色温度和复色时间保持不变。还研究了MgO、Al2O3、硅藻土、硅胶、CaCO3等无机填料对颜料变色性能的影响,结果表明:以Al2O3和硅胶为填料,m(结晶紫)∶m(硼酸)∶m(填料)=1∶200∶(100～200),颜料的两个变色温度降低到56℃和85℃,复色时间为105s。DSC检测颜料的热变色过程得出:该系列变色颜料在40～60℃、100～130℃、130～150℃出现3个吸热峰。 A series of crystal violet-boric acid reversible thermochromic paints were prepared by solid phase synthesis method.The results indicate that,with m(crystal violet)∶m(boric acid)=1∶(200～600),the color of the paint changes from violet-red to blue at 60～65 ℃,and changes to yellow at 95～100 ℃.The paint recovers its original color after being cooled and the color-recovering time is less than 3 min.The color and lustre,thermochromic temperature and color-recovering time of the products keep constant when the experiment is carried out repeatedly 20 times.Influences of the sort and the ratio of filler such as MgO,Al_2O_3,siliceous earth,silica gel and CaCO_3 on the thermochromic property of the paint were studied.It shows that,with m(crystal violet)∶m(boric acid)∶m(filler)=1∶200∶(100～200),and Al_2O_3 and silica gel as filler,the thermochromic temperatures of the paint are reduced to 56 ℃ and 85 ℃,and the color-recovering time is 105 s.The thermochromic process of the products was investigated by DSC,which shows three peaks of heat absorption at 40～60 ℃,100～130 ℃ and 130～150 ℃.

关 键 词： 固相合成 热致变色 结晶紫 硼酸

领　　域： [化学工程]