Research on the rapid evaluation method of weather resistance of titanium dioxide based on photocurrent method

YUAN Haomin; ZHONG Shan; TANG Siyang; ZHOU Xuemei; LI Hongjiao; LU Feng; LIANG Bin

doi:10.7513/j.issn.1004-7638.2025.04.005

Volume 46 Issue 4

Aug. 2025

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YUAN Haomin, ZHONG Shan, TANG Siyang, ZHOU Xuemei, LI Hongjiao, LU Feng, LIANG Bin. Research on the rapid evaluation method of weather resistance of titanium dioxide based on photocurrent method[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(4): 35-42. doi: 10.7513/j.issn.1004-7638.2025.04.005

Citation:

YUAN Haomin, ZHONG Shan, TANG Siyang, ZHOU Xuemei, LI Hongjiao, LU Feng, LIANG Bin. Research on the rapid evaluation method of weather resistance of titanium dioxide based on photocurrent method[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(4): 35-42. doi: 10.7513/j.issn.1004-7638.2025.04.005

Citation:

YUAN Haomin, ZHONG Shan, TANG Siyang, ZHOU Xuemei, LI Hongjiao, LU Feng, LIANG Bin. Research on the rapid evaluation method of weather resistance of titanium dioxide based on photocurrent method[J]. IRON STEEL VANADIUM TITANIUM, 2025, 46(4): 35-42. doi: 10.7513/j.issn.1004-7638.2025.04.005

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Research on the rapid evaluation method of weather resistance of titanium dioxide based on photocurrent method

doi: 10.7513/j.issn.1004-7638.2025.04.005

1.
School of Chemical Engineering, Sichuan University, Chengdu 610065, Sichuan, China
2.
Research Institute of New Energy and Low Carbon Technology, Sichuan University, Chengdu 610207, Sichuan, China

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Received Date: 2025-04-27
Available Online: 2025-08-31
Publish Date: 2025-08-31

Abstract

Abstract

Titanium dioxide has relatively high photocatalytic activity, and it is usually necessary to carry out post-treatment to suppress the photocatalytic activity and improve the weather resistance ability. However, the evaluation of the effect of titanium dioxide photocatalytic activity on the weather resistance of the substrate usually takes a long time, and it is difficult to meet the need of rapid detection feedback to guide process adjustment in the actual production process. Based on the photocurrent test method and the carbon black undertone method, combined with the accelerated UV aging results of polypropylene (PP) resin and polyvinyl chloride (PVC) resin systems with addition of different titanium dioxide, the practicability of the photoelectric current testing method as a rapid evaluation means for the weather resistance of titanium dioxide in PP and PVC systems was verified. The results show that, taking the gloss retention rate (G_r) as the quantitative index of aging degree, the photocurrent and dispersion parameters can better quantitatively predict the weather resistance of different titanium dioxide in PP and PVC systems. This technology can provide guidance for the rapid evaluation methods development of weather resistance ability of titanium dioxide in different systems, and then provide support for the optimization of titanium dioxide production process.
- titanium dioxide,
- weather resistance,
- photocurrent,
- dispersion,
- polypropylene,
- polyvinyl chloride

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References(19)

References

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