干旱区生态环境知识资源中心(Arid): Study on the Preparation and Properties of Impervious and Breathable Sand Based on Hydrophobic Theory

Arid

DOI	10.3390/ma14195613
	Study on the Preparation and Properties of Impervious and Breathable Sand Based on Hydrophobic Theory
	Li, Xiao; Zhang, Xiong; Ren, Hao
通讯作者	Zhang, X (corresponding author), Tongji Univ, Minist Educ, Key Lab Adv Civil Engn Mat, Shanghai 201804, Peoples R China. ; Zhang, X (corresponding author), Tongji Univ, Sch Mat Sci & Engn, Shanghai 201804, Peoples R China.
来源期刊	MATERIALS
EISSN	1996-1944
出版年	2021
卷号	14 期号:19
英文摘要	Land desertification, a severe global ecological and environmental problem, brings challenges to the sustainable utilization of land resources in the world. The purpose of this research is to use hydrophobic theory to prepare impervious and breathable sand, and to solve the problems of sandy soil that seeps easily and makes it difficult for vegetation to survive in desertified areas. The influences of coating material content, first-level and second-level rough structure on the impermeability and air permeability of impervious and breathable sand were studied. The research showed that, with the increase in coating material content, the impervious performance of the sample increased firstly and then decreased, and the air permeability rose continuously. The hydrostatic pressure resistance of the sample can reach an extreme value of 53 mm. The first-level rough structure of micron structure can greatly improve the hydrophobic performance, thus improving the impervious performance. The addition of micron calcium carbonate would improve the hydrostatic pressure resistance height of the sample to 190 mm. The sample would reach a superhydrophobic state in the condition of a first-level rough structure of a nano structure built by nano silica, and the contact angle was up to 152.0 & DEG;, so that the hydrostatic pressure resistance height can rise to 205 mm. The best performance would be achieved under the condition of relatively less raw material with a second-level rough structure of micro-nano. At this point, the contact angle of the sample reached 152.8 & DEG; and the hydrostatic pressure resistance height was up to 205 mm. At the same time, the air permeability index of the above four kinds of impervious and breathable sand met all planting requirements. The sample prepared can satisfy the demands of different degrees of impermeability and air permeability, and can be widely used in desertification control.
英文关键词	impervious breathable hydrophobic surface rough structure coating materials
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000709333400001
WOS关键词	SUPERHYDROPHOBIC SURFACES ; SOIL
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Physics, Applied ; Physics, Condensed Matter
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368399
作者单位	[Li, Xiao; Zhang, Xiong; Ren, Hao] Tongji Univ, Minist Educ, Key Lab Adv Civil Engn Mat, Shanghai 201804, Peoples R China; [Li, Xiao; Zhang, Xiong; Ren, Hao] Tongji Univ, Sch Mat Sci & Engn, Shanghai 201804, Peoples R China
推荐引用方式 GB/T 7714	Li, Xiao,Zhang, Xiong,Ren, Hao. Study on the Preparation and Properties of Impervious and Breathable Sand Based on Hydrophobic Theory[J],2021,14(19).
APA	Li, Xiao,Zhang, Xiong,&Ren, Hao.(2021).Study on the Preparation and Properties of Impervious and Breathable Sand Based on Hydrophobic Theory.MATERIALS,14(19).
MLA	Li, Xiao,et al."Study on the Preparation and Properties of Impervious and Breathable Sand Based on Hydrophobic Theory".MATERIALS 14.19(2021).