Study on Composite Modification of Natural Barite of Stearic Acid Titanate Coupling Agent

ZHU Fusheng; FENG Xiaoqin; WANG Jiakui; YANG Zhen; GAO Feng; FU Yuanxiang; HUANG Hongsheng

doi:10.13779/j.cnki.issn1001-0076.2022.04.006

2022 Vol. 42, No. 4

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Article navigation > Conservation and Utilization of Mineral Resources > 2022 > 42(4): 51-59

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ZHU Fusheng, FENG Xiaoqin, WANG Jiakui, YANG Zhen, GAO Feng, FU Yuanxiang, HUANG Hongsheng. Study on Composite Modification of Natural Barite of Stearic Acid Titanate Coupling Agent[J]. Conservation and Utilization of Mineral Resources, 2022, 42(4): 51-59. doi: 10.13779/j.cnki.issn1001-0076.2022.04.006

Citation:

ZHU Fusheng, FENG Xiaoqin, WANG Jiakui, YANG Zhen, GAO Feng, FU Yuanxiang, HUANG Hongsheng. Study on Composite Modification of Natural Barite of Stearic Acid Titanate Coupling Agent[J]. Conservation and Utilization of Mineral Resources, 2022, 42(4): 51-59. doi: 10.13779/j.cnki.issn1001-0076.2022.04.006

Study on Composite Modification of Natural Barite of Stearic Acid Titanate Coupling Agent

1.
School of Chemical Engineering, Guizhou Institute of Technology, Guiyang 550003, Guizhou, China
2.
Key Laboratory of Energy Chemistry for General Higher Education in Guizhou Province, Guiyang 550003, Guizhou, China

More Information

Corresponding author: HUANG Hongsheng, 36959784@qq.com

Received Date: 06 April 2022

Publish Date: 25 August 2022

Abstract

Abstract

Using stearic acid and titanate coupling agent as composite modifier, the natural barite powder produced in Guizhou was modified by wet mechanochemical method. The effects of process conditions such as ball milling time, ball milling speed, mass ratio of ball to material, dosage of compound modifier, and mass ratio of modifier on the properties of modified barite were studied. The phase structure, morphological characteristics and coating of barite before and after modification were characterized by FT-IR、XRD、SEM、TEM and TG. The results show that the optimal process conditions are obtained through single factor experiments: the ball milling time is 2 h, the ball milling speed is 800 r/min, the mass ratio of ball to material (ball/barite) is 4 GA6FA 1, the dosage of compound modifier is 2.0% (modifier/barite), and the mass ratio of modifier (stearic acid/titanate coupling agent) is 2 GA6FA 1. After modification, the modifier was successfully chemically bonded to the barite surface. Compared with the unmodified barite, the average particle size of the modified barite is reduced, the dispersibility is enhanced, and the crystal structure does not change significantly. The modified barite's contact angle changes from 39.07° to 150.95°, and the solid surface free energy changes from 18.62 mJ/m² to 0.72 mJ/m². The modified barite has better superhydrophobicity and can be used as a raw material for preparing superhydrophobic coating materials.
- barite /
- stearic acid /
- titanate coupling agent /
- composite modification /
- wet mechanochemical method

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References

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