光致∕热致复合变色材料的制备及应用研究
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摘要
紫外荧光聚合物材料是指材料本身在自然光条件下不显荧光性,在紫外光的照射下发出可见光的一类高分子材料。热致变色聚合物材料是指在温度变化时发生颜色变化的一种功能高分子材料。在印刷防伪技术和化学材料防伪技术中,紫外荧光油墨和热致变色聚合物材料分别可以作为一种防伪材料,但是单独的防伪技术已经很难满足人们的需要,而将这两者结合起来所制备的光致∕热致复合变色材料更是吸取了这两种技术的优点,实现多重防伪。
本文是以聚合物作为电子授受反应介质来制备光致∕热致复合变色材料,并将其与激光全息防伪烫印膜结合起来,制备出一种检测方法简单,集多重防伪技术于一体的新型防伪标识材料。主要包括以下内容:
(1)以发色剂结晶紫内酯为电子给体,显色剂双酚A为电子受体,分别以聚苯乙烯和丙烯酸树脂为电子授受反应介质,稀土金属Eu的配合物作为紫外荧光物质,制备光致∕热致复合变色材料。用紫外灯检测其紫外荧光性,用简单的热水喷淋的方式检测其温变性,并讨论光致∕热致复合变色材料的配方中各组分对该膜的荧光性和温变性的影响。得到在紫外灯照射下发出红色荧光,用70℃以上的热水喷淋可以从蓝色变为几乎无色的光致∕热致复合变色材料。
(2)将光致∕热致复合变色材料与激光全息防伪商标结合起来,用PET转移法制备具有紫外荧光性和热致变色性的激光全息防伪烫印膜。针对激光全息防伪烫印膜的结构及PET转移法的工艺流程,制备光致∕热致复合变色烫印膜。用紫外灯检测其紫外荧光性,用简单的热水喷淋的方法检测其温变性。讨论涂布和烫印工艺参数对光致∕热致复合变色烫印膜的影响。结合成本考虑优化工艺及配方,制备光致∕热致复合变色烫印膜。得到在紫外灯(或带有紫外灯的验钞机)下,发出明显的红色荧光,而且当用温度达到70℃以上的热水喷淋可以从蓝色变为几乎无色的光致∕热致复合变色烫印膜。优化后的烫印膜在达到相同的荧光性和温变性的同时,紫外荧光红粉的含量为之前的1/30,大大降低了生产成本。
Ultraviolet fluorescent polymeric material is a kind of polymer that can’t show its fluorescent characteristic under visible light but can emit visible light when exposing to ultraviolet light. Thermochromism polymer is a kind of polymer whose color changed with the temperature. Both of these can be used as anti-counterfeit materials separately. But how to make full use of the merits of these two polymers and prepare photo-and thermo-chromic composite materials is a more promising way in Modern Anti-counterfeit Printing Technology.
In this thesis we use polymers as reaction medium. Combine with laser holographic anti -counterfeit hot-pressure printing film Technology to prepare a new anti-counterfeit material that easy to detect. This thesis is consisted of two sections as follows:
(1) Crystal violet lactone and bisphenol A are used as electron acceptor and donator respectively, polystyrene and acrylic resin are used as reaction medium, rare earth metal organic complex is used as fluorescent material to prepare photo-and thermo-chromic composite material. Its photochromism and thermochromism performance are detected by UV lamp and hot water respectively. When exposing under ultraviolet lamp, the composite material emit red fluorescent light, when douse by hot water(>70℃), the color of the composite material changed from blue to colorless. The influences of each component are also be discussed in this chapter.
(2) Combing photo-and thermo-chromic composite material with laser holography Anti–counterfeit trademarks, PET Transfer Method is used to prepare photo-and thermo-chromic laser holography anti -counterfeit hot-pressure printing film. Its photochromism and thermochromism performance are also detected by UV lamp and hot water respectively. When exposing under ultraviolet lamp, the composite material emit red fluorescent light, when douse by hot water(>70℃), the colour of the composite material changed from blue to colorless. The influences of each technological parameters to the film and the cost are also discussed in this paper. To the same level of thermochromism and photochromism, our optimized hot-pressure printing film need only 1/30 ultraviolet fluorescent powder compared to former hot-pressure printing film, which greatly reducing the cost.
本文是以聚合物作为电子授受反应介质来制备光致∕热致复合变色材料,并将其与激光全息防伪烫印膜结合起来,制备出一种检测方法简单,集多重防伪技术于一体的新型防伪标识材料。主要包括以下内容:
(1)以发色剂结晶紫内酯为电子给体,显色剂双酚A为电子受体,分别以聚苯乙烯和丙烯酸树脂为电子授受反应介质,稀土金属Eu的配合物作为紫外荧光物质,制备光致∕热致复合变色材料。用紫外灯检测其紫外荧光性,用简单的热水喷淋的方式检测其温变性,并讨论光致∕热致复合变色材料的配方中各组分对该膜的荧光性和温变性的影响。得到在紫外灯照射下发出红色荧光,用70℃以上的热水喷淋可以从蓝色变为几乎无色的光致∕热致复合变色材料。
(2)将光致∕热致复合变色材料与激光全息防伪商标结合起来,用PET转移法制备具有紫外荧光性和热致变色性的激光全息防伪烫印膜。针对激光全息防伪烫印膜的结构及PET转移法的工艺流程,制备光致∕热致复合变色烫印膜。用紫外灯检测其紫外荧光性,用简单的热水喷淋的方法检测其温变性。讨论涂布和烫印工艺参数对光致∕热致复合变色烫印膜的影响。结合成本考虑优化工艺及配方,制备光致∕热致复合变色烫印膜。得到在紫外灯(或带有紫外灯的验钞机)下,发出明显的红色荧光,而且当用温度达到70℃以上的热水喷淋可以从蓝色变为几乎无色的光致∕热致复合变色烫印膜。优化后的烫印膜在达到相同的荧光性和温变性的同时,紫外荧光红粉的含量为之前的1/30,大大降低了生产成本。
Ultraviolet fluorescent polymeric material is a kind of polymer that can’t show its fluorescent characteristic under visible light but can emit visible light when exposing to ultraviolet light. Thermochromism polymer is a kind of polymer whose color changed with the temperature. Both of these can be used as anti-counterfeit materials separately. But how to make full use of the merits of these two polymers and prepare photo-and thermo-chromic composite materials is a more promising way in Modern Anti-counterfeit Printing Technology.
In this thesis we use polymers as reaction medium. Combine with laser holographic anti -counterfeit hot-pressure printing film Technology to prepare a new anti-counterfeit material that easy to detect. This thesis is consisted of two sections as follows:
(1) Crystal violet lactone and bisphenol A are used as electron acceptor and donator respectively, polystyrene and acrylic resin are used as reaction medium, rare earth metal organic complex is used as fluorescent material to prepare photo-and thermo-chromic composite material. Its photochromism and thermochromism performance are detected by UV lamp and hot water respectively. When exposing under ultraviolet lamp, the composite material emit red fluorescent light, when douse by hot water(>70℃), the color of the composite material changed from blue to colorless. The influences of each component are also be discussed in this chapter.
(2) Combing photo-and thermo-chromic composite material with laser holography Anti–counterfeit trademarks, PET Transfer Method is used to prepare photo-and thermo-chromic laser holography anti -counterfeit hot-pressure printing film. Its photochromism and thermochromism performance are also detected by UV lamp and hot water respectively. When exposing under ultraviolet lamp, the composite material emit red fluorescent light, when douse by hot water(>70℃), the colour of the composite material changed from blue to colorless. The influences of each technological parameters to the film and the cost are also discussed in this paper. To the same level of thermochromism and photochromism, our optimized hot-pressure printing film need only 1/30 ultraviolet fluorescent powder compared to former hot-pressure printing film, which greatly reducing the cost.
引文
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