Analysis on the application of titanium dioxide in inks

钛白粉，学名为二氧化钛，作为一种优质白色颜料和添加剂，钛白粉具有卓越的性能特点，如高遮盖力、出色的分散性、优异的耐光性、耐热性、耐碱性、耐候性广泛应用在涂料、塑料、油墨、造纸、化妆品等领域。其主要成分二氧化钛有两种晶体结构：锐钛型和金红石型。由于其高遮盖力和白度，钛白粉在工业中作为白色颜料使用，赋予制品优良的遮盖力和色泽。其化学性质稳定，耐候性和耐热性好，能承受各种气候和温度变化。这些特性使得钛白粉在油墨配方中占据了不可替代的地位。

"Application Characteristics"

01提高油墨的白度和遮盖力

Impurity ions, especially metal ions such as trace amounts of iron, chromium, cobalt, copper and other impurities, are mixed into titanium dioxide, which will distort the crystal structure of titanium dioxide and may cause color cast and reduced whiteness of the ink. Rutile titanium dioxide is more sensitive to impurities. For example, when iron oxide content is more than 0.003%, it can develop color, while when iron oxide content is more than 0.009%, it needs to develop color in anatase titanium dioxide. Therefore, choosing pure titanium dioxide is crucial. Secondly, the shape, size and distribution of titanium dioxide particles have an impact on whiteness. The ideal iron oxide particles should be smooth and without corners, which will reduce light reflection and reduce whiteness. The particle size is in the range of 0.2 to 0.4μm (approximately equal to 1/2 of the wavelength of visible light), high scattering power can be obtained and whiteness can be increased. Too small or too large particle size will affect the whiteness of the ink. Therefore, titanium dioxide particles are required to be of moderate size and evenly distributed.

钛白粉因其高折光率和良好光散射性能，能使油墨在光照下充分反射光线，呈现高亮洁白色彩。在需要高白度的印刷品，如报纸、杂志中，钛白粉能显著提升视觉效果和美观度。此外，其强遮盖力还能有效遮盖纸张底色，使印刷图案更清晰。

02 Enhance the abrasion resistance and weather resistance of ink

钛白粉具有较高的硬度、良好的化学稳定性和热稳定性，这使得加入钛白粉的油墨在耐磨和耐候方面表现出色。在户外广告、标牌、包装印刷等领域，油墨经常需要经受风吹雨打、日晒雨淋等恶劣环境，而钛白粉的加入可以显著提高油墨的耐候性能，有效减缓因光照、湿度、温度等因素引起的颜色褪变和磨损现象。

03 Improve the dryness and adhesion of ink

钛白粉具有较大的表面积和较强的表面活性，这使得它在油墨中能够起到一定的干燥促进作用和附着力增强作用。在印刷过程中，钛白粉能够与连结料、添加剂等成分相互作用，促进油墨的快速干燥，提高印刷效率。同时，钛白粉还能够与纸张表面紧密结合，提高油墨在纸张上的附着力，防止油墨脱落或龟裂。

04 Adjust the gloss and rheology of the ink

钛白粉的着色力主要取决于其对可见光的散射能力，这一特性直接关联到油墨的着色力。散射系数越大，钛白粉的着色力越强。此外，钛白粉的折射率也是决定其着色力的重要因素，折射率越高，着色力也越强。在白色颜料中，钛白粉的折射率居于领先地位，其中金红石型钛白粉的折射率相对锐钛型更高。因此，为确保最佳的着色效果，应优先选用散射能力强且折射率高的钛白粉。

By finely controlling the particle size and addition amount of titanium dioxide, we can effectively control the gloss of the ink and achieve diverse effects from matte to high light. Not only that, the addition of titanium dioxide also has a positive impact on the rheology of the ink, which can improve the stability and printing adaptability of the ink to a certain extent.

现代工业越来越注重环保和安全性能，而钛白粉作为一种无毒、无味的物质，符合这一发展趋势。它不含有对人体有害的重金属离子和放射性物质，对人体无害。由于钛白粉的化学性质稳定，不易与其他物质发生化学反应，降低了油墨在使用过程中发生变质或产生有害物质的风险。

"Application formula"

01纸张油墨

Titanium dioxide is the main white pigment in paper inks, which can greatly improve the whiteness and luster of printed matter. By adjusting the amount and particle size distribution of titanium dioxide, the rheological properties and printability of the ink can be optimized.

配方示例：以50%钛白粉、25%颜料、15%树脂、10%添加剂的比例进行调配，可获得良好的印刷适性和高光泽。

02 Plastic ink

在塑料油墨中，钛白粉可以赋予印刷品高遮盖力，有效遮盖底材颜色。同时，它还能提高油墨与塑料表面的附着力。这个配方案例适用于塑料薄膜印刷，具有优异的附着力和抗摩擦性能。

Formula example: The ratio of 40% titanium dioxide, 30% pigment, 20% resin, and 10% additive can make the printed matter have high covering power and strong adhesion to the plastic surface. In addition, by adding plasticizers, the wettability and adhesion of the ink to the plastic film can be further enhanced, thereby improving the printing effect and quality.

03金属油墨

In metal inks, titanium dioxide can enhance the adhesion of the ink to the metal surface and improve the corrosion resistance and weather resistance of the printed matter.

配方示例：以60%钛白粉、20%颜料、15%树脂、5%添加剂的比例进行调配，能提高印刷品的耐腐蚀性和耐候性。

Please note that the above formula examples are for reference only and need to be adjusted according to actual needs during specific applications.

钛白粉在油墨中的作用不容忽视。在当今竞争激烈的印刷市场中，选择优质的钛白粉是确保印刷品质量的关键因素之一。近年来，钛白粉价格升涨势头强劲，随着科技的不断发展，钛白粉在油墨中的应用还将进一步拓展和完善，为印刷行业带来更多的可能性。