水性光油中珠光颜料显色性的比较研究

发布时间：2018-07-17 08:17

【摘要】：珠光颜料起源于二十世纪,它的呈色是模拟珍珠、鸟类羽毛、肥皂泡液等各种自然界中的折射光和干涉光,因其能呈现珍珠般的光泽、丝绸般的质感和闪烁渐变的效果而被广泛应用在涂料、化妆品、油墨、染料等领域。早期对珠光颜料的研究主要集中在形成机理、不同基材晶核的选择、不同制备方法(气相包覆法和液相均匀沉积法)的优劣和改性等方面,而不同参数对珠光颜料在光油中显色效果的影响则研究较少。通过本研究,比较了不同类型的珠光颜料在水性光油中的呈色效果,即将珠光颜料加入到水性光油中制成混合浆状物,并通过模拟凹版印刷的方式将其转移到承印物的表面,待印品干燥后测试其主密度值和色度值,并通过色差公式计算出上光后珠光颜料呈现的颜色与底色油墨的色差,以此来评价珠光颜料的显色性效果。对相同印刷条件下,不同质量比和不同粒径大小的珠光颜料进行颜色测试,探讨质量比改变和粒径大小不同对珠光颜料颜色变化的影响;对不同粒径大小的颜料在凹印版辊不同加网线数下呈色效果的研究,探讨粒径大小和凹印版辊加网线数的匹配关系;对不同承印材料下珠光颜料呈色效果的比较研究,探讨了适合珠光颜料的最佳承印材料。研究结果表明,质量比是影响珠光颜料呈色效果的最主要因素,即珠光颜料在水性光油中的含量越大,珠光颜料的呈色效果越好,对底色的遮盖能力增强。粒径变化对颜料的颜色改变作用较小。利用凹印上光,颜料的粒径大小和凹印版辊的加网线数相匹配时,珠光颜料的显色效果最好。在不同的纸张上印刷时,纸张定量越大,呈色效果越好,同等定量下,铜版纸的展色效果优于胶版纸。本文的研究结果可以为珠光颜料在水性光油中的应用提供一定的参考价值。质量比、粒径大小、网纹辊加网线数和承印材料的改变都可以改变珠光颜料的呈色效果,在使用时,要依据客户所要呈现的印刷品珠光效果选用合适的珠光溶液配比量,其次,要根据珠光颜料的粒径大小选用合适的印版滚筒加网线数,以保证珠光颜料有足够的转移量。
[Abstract]:Pearlescent pigments originated in the 20th century and are colored by refracting and interfering light from nature, such as pearls, bird feathers, soap bubbles, etc., because they have a pearl luster. Silk texture and glint effect are widely used in coatings, cosmetics, ink, dyes and other fields. The early studies on pearlescent pigments mainly focus on the formation mechanism, the choice of crystal nuclei of different substrates, the advantages and disadvantages of different preparation methods (gas phase coating and liquid phase homogeneous deposition), and the modification of pearlescent pigments. However, the effect of different parameters on the color effect of pearlescent pigments in smooth oil is less studied. Through this study, we compared the color effect of different types of pearlite pigments in water-based oil, that is, the pearlite pigment was added to the water-based smooth oil to form a mixed paste, and transferred it to the surface of the substrate by simulating gravure printing. The main density value and chroma value of the pigment were tested after drying, and the color difference between the pearlescent pigment and the base color ink was calculated by the color difference formula, so as to evaluate the color rendering effect of the pearlescent pigment. The color of pearlescent pigments with different mass ratio and particle size was tested under the same printing conditions, and the influence of the change of mass ratio and particle size on the color changes of pearlescent pigments was discussed. The color effect of pigments with different particle sizes under different number of lines added by gravure roller was studied, the matching relationship between particle size and the number of lines added by gravure roller was discussed, and the comparison of color effect of pearlescent pigment under different bearing materials was studied. The optimum printing material suitable for pearlescent pigment was discussed. The results show that the mass ratio is the most important factor affecting the color effect of pearlite pigments, that is, the larger the content of pearlescent pigment in water-based oil, the better the color effect of pearlescent pigments, and the better the covering ability of pearlescent pigments to the background color. The change of particle size has little effect on the color change of pigment. The pearlescent pigment has the best color effect when the size of the pigment is matched with the number of mesh lines of the gravure roller. When printing on different paper, the larger the paper quantity, the better the color effect. Under the same quantity, the color spread effect of coated paper is better than that of offset paper. The results of this paper can provide some reference value for the application of pearlescent pigment in waterborne oil. The quality ratio, the size of particle size, the number of lines added by roller and the change of printing material can all change the color effect of pearlescent pigment. In use, we should choose the appropriate proportion of pearlite solution according to the effect of printing products presented by the customer, and then choose the appropriate quantity of pearlescent solution. According to the particle size of pearlescent pigment, a suitable number of plate rollers should be selected to ensure a sufficient transfer amount of pearlescent pigments.
【学位授予单位】：郑州大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TQ628.2

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