影响钛白粉在涂料中光泽度的因素分析

邹勇; 李纲; 李礼; 柯良辉; 陈新红

doi:10.7513/j.issn.1004-7638.2024.03.005

影响钛白粉在涂料中光泽度的因素分析

doi: 10.7513/j.issn.1004-7638.2024.03.005

1.
重庆理工大学化学化工学院, 重庆 400054
2.
攀钢集团重庆钛业有限公司, 重庆 401319

详细信息

中图分类号: TF823
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- 被引次数: 0
出版历程
- 收稿日期: 2023-11-04
- 刊出日期: 2024-07-02

Analysis of factors affecting the gloss of titanium dioxide in coatings

1.
College of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054,China
2.
Chongqing Titanium Industry Co., Ltd., Pangang Group, Chongqing 401319,China

摘要

摘要: 针对国内外钛白粉在应用性能上的差异，采用SEM、TEM、EDS、XPS和FTIR等分析手段对不同钛白粉产品GT1，GT2和MT的微观结构进行表征，研究钛白粉在涂料中光泽度的影响因素。结果表明，MT粒径集中分布在0.1～0.5 μm，平均粒径为0.249 μm；表面包膜完整度高，包膜层厚度为1.2～4.5 nm；表面羟基含量较高，吸油量和比表面积低，在涂料中的分散性较好。正是因为国外钛白粉MT的表面结构优于GT1和GT2，从而使得MT在涂料中的光泽度高于国内钛白粉产品GT1和GT2。
- 二氧化钛 /
- 表面结构 /
- 光泽度 /
- 包膜完整度 /
- 粒径
Abstract: Aiming at the differences in the application performance of titanium dioxide at home and abroad, the morphology of different titanium dioxide products including GT1, GT2 and MT were analyzed by SEM, TEM, EDS, XPS and FTIR. The influencing factors of the glossiness of titanium dioxide in coatings were studied. The results show that the MT particle size is centrally distributed in the range of 0.1-0.5 μm, with a mean particle size of 0.249 μm. The MT surface envelope has a high degree of integrity, with the thickness of the envelope layer ranging from 1.2 to 4.5 nm. The MT surface has a high hydroxyl content, with low oil absorption and specific surface area, and good dispersion in the coating. This is because the surface structure of foreign titanium dioxide MT is better than that of GT1 and GT2, so that the gloss of MT in coatings is higher than that of domestic titanium dioxide products GT1 and GT2.
- titanium dioxide /
- surface composition /
- gloss /
- envelope integrity /
- particle size

HTML全文

图 1 不同钛白粉样品的SEM图片及粒径分布

Figure 1. SEM images and particle size distributions curves of different titanium dioxide samples

(a)(d): GT1; (b)(e): GT2; (c)(f): MT

下载: 全尺寸图片幻灯片

图 2 不同钛白粉样品的TEM和EDS

Figure 2. TEM and EDS images of different titanium dioxide samples

(a): GT1; (b): GT2; (c): MT

下载: 全尺寸图片幻灯片

图 3 不同钛白粉样品的红外光谱

Figure 3. Infrared spectra of different titanium dioxide samples

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图 4 不同钛白粉样品的X 射线光电子能谱

Figure 4. X-ray photoelectron spectra of different titanium dioxide samples

下载: 全尺寸图片幻灯片

图 5 不同钛白粉在应用体系中光泽度变化趋势

Figure 5. Trend of gloss variation of different titanium dioxide in the application system

下载: 全尺寸图片幻灯片

表 1 不同钛白粉样品的表面氧物种

Table 1. Surface oxygen species of different titanium dioxide samples

样品名称 Ti-OH结合能/eV 表面羟基个数/(个·nm⁻²)

GT1 530.77 2.37
GT2 530.39 3.00
MT 530.15 3.19

下载: 导出CSV

表 2 不同钛白粉比表面积和吸油量数据

Table 2. Specific surface area and oil absorption of different titanium dioxide

样品名称比表面积/(m²·g⁻¹) 100 g吸油量/g 分散性/μm

GT1 15.5 19.1 11.7
GT2 13.9 19.0 18.3
MT 12.1 19.7 10

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