DOI: 10.11908/j.issn.0253-374x.20466

作者:

作者单位: 1.同济大学 先进土木工程材料教育部重点实验室，上海 201804;2.中交港湾(上海)科技有限公司，上海 200030


作者简介: 张雄（1956—），男，教授，博士生导师，工学博士，主要研究方向为建筑功能材料及生态环境材料。 E-mail：zhangxiong@tongji.edu.cn


通讯作者:

中图分类号: TU577


基金项目: 国家重点研发计划（2016YFC0700800）




Preparation and Properties of Superhydrophobic Materials for Ecological Restoration
Author:

Affiliation: 1.Key Laboratory of Advanced Civil Engineering Materials of the Ministry of Education， Tongji University， Shanghai 201804， China;2.China Communications Harbor(Shanghai) Technology Co. Ltd.， Shanghai 200030， China


Fund Project:




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摘要:为提高砂质土壤保水蓄水能力，制备出一种性能优异的超疏水型生态修复材料，以砂质土壤为芯料，通过调整覆膜材料的种类、掺量和芯料级配，并在芯料表面构建纳米粗糙结构，探究该材料防渗性和透气性的影响规律。结果表明：在选取覆膜材料时，疏水树脂的表面能应小于30mN·m^-1；为提升该材料的防渗性能，芯料级配分布的相对标准偏差α应大于0.35；在材料具备低表面能的前提下，加入纳米级材料增大粗糙度，可显著提高超疏水型生态修复材料的防渗性能。用掺量为1%的氟硅树脂对大漠砂覆膜后，加入掺量为0.3%的纳米SiO₂在表面构建粗糙结构，所制得的超疏水型生态修复材料耐静水高度可达48cm。



Abstract:In order to improve the water-holding capacity of sandy soil， and produce the super-hydrophobic material for ecological restoration ， this paper discusses the influence of raw materials， in which sandy soil is chosen as the core material， on impermeability and air permeability by adjusting the types and content of film covering material， changing the gradation of the core material and constructing nano rough structure on the surface of the core material. The results show that when selecting the film covering material， the surface energy should be less than 30mN·m^-1. To improve the impermeability of the material， the standard deviation α of the core material distribution should be greater than 0.35. In the case of material with low surface energy， adding nano material to increase the roughness is the key to further improve the impermeability of the super-hydrophobic material for ecological restoration. After filming the desert sand with 1% fluorosilicone resin and adding 0.3% nano-silica to construct nano rough structure， the super-hydrophobic material for ecological restoration obtained can withstand hydrostatic pressure up to 48cm.





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