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Preparation of Expanded Vermiculite via Chemical-Microwave Method and Correlation Between Expansion Rate and Flexibility
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Yanyan XIE1, 2, Hongjuan SUN1, 2, 3, Tongjiang PENG1, 2, 3, 4, Liming LUO1, 2, Jingfei TIAN1, 2
Journal of the Chinese Ceramic Society | 2020, 48(8) : 1325 - 1332
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Journal of the Chinese Ceramic Society | 2020, 48(8): 1325-1332
• Research Articles •
Preparation of Expanded Vermiculite via Chemical-Microwave Method and Correlation Between Expansion Rate and Flexibility
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Yanyan XIE1, 2, Hongjuan SUN1, 2, 3, Tongjiang PENG1, 2, 3, 4, Liming LUO1, 2, Jingfei TIAN1, 2
Affiliations
  • 1.Key Laboratory of Ministry of Education for Solid Waste Treatment and Resource Recycle, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China
  • 2.Institute of Mineral Materials and Applications, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China
  • 3.Sichuan Engineering Lab of Nonmetallic Mineral Powder Modification & High-quality Utilization, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China
  • 4.Center of Forecasting and Analysis, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China

    • XIE Yanyan (1994-), male, Master candidate. E-mail:

About Author:

XIE Yanyan (1994-), male, Master candidate. E-mail:

Published: 2020-08-20 doi: 10.14062/j.issn.0454-5648.20190766
Outline
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A flexible expanded vermiculite (FEV) with a high expansion ratio was prepared by a chemical-microwave method with industrial vermiculite as a raw material. The optional process and relationship between expansion rate and flexibility were investigated. The results show that the expansion ratio of FEV prepared by chemical-microwave heating is up to 36.36. The screen tailings yield of FEV samples is negatively correlated to the expansion rate, and the sharp expansion action can improve the exfoliation ability of expanded vermiculite particles, thereby reducing the flexibility of FEV sample particles. The interior of FEV is loose and porous, the pores are evenly distributed and the intact layered structure is still maintained. The thickness of the inner wall forming the narrow slit is 50-200 nm. The FEV is a low-cost precursor of vermiculite nanomaterial, which can be mechanically exfoliated to prepare vermiculite nanomaterial based on its lamellar dissociation characteristic.

oxalic acid  /  hydrogen peroxide  /  microwave  /  expanded vermiculite  /  high expansion ratio  /  flexibility
解颜岩, 孙红娟, 彭同江, 罗利明, 田景斐. 膨胀蛭石的化学-微波法制备及其膨胀率与柔韧性的关系. 硅酸盐学报, 2020 , 48 (8) : 1325 -1332 . DOI: 10.14062/j.issn.0454-5648.20190766
Yanyan XIE, Hongjuan SUN, Tongjiang PENG, Liming LUO, Jingfei TIAN. Preparation of Expanded Vermiculite via Chemical-Microwave Method and Correlation Between Expansion Rate and Flexibility[J]. Journal of the Chinese Ceramic Society, 2020 , 48 (8) : 1325 -1332 . DOI: 10.14062/j.issn.0454-5648.20190766
Appendix
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Year 2020 volume 48 Issue 8
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Article Info
doi: 10.14062/j.issn.0454-5648.20190766
  • Receive Date：2019-11-26
  • Online Date：2026-10-29
  • Published：2020-08-20
Article Data
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History
  • Received：2019-11-26
  • Revised：2020-01-05
Funding
Affiliations
    1.Key Laboratory of Ministry of Education for Solid Waste Treatment and Resource Recycle, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China
    2.Institute of Mineral Materials and Applications, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China
    3.Sichuan Engineering Lab of Nonmetallic Mineral Powder Modification & High-quality Utilization, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China
    4.Center of Forecasting and Analysis, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China

Corresponding:

SUN Hongjuan (1976-), female, Ph.D., Professor. E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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