材料科学
路径(计算)
废物管理
原材料
转化(遗传学)
城市固体废物
工艺工程
化学工程
生化工程
纳米技术
工程类
化学
计算机科学
有机化学
生物化学
基因
程序设计语言
作者
Shizhao Yang,Xujiang Wang,Jingwei Li,Xingliang Yao,Renjie Mi,Jianyong Wang,Zhijuan Hu,Yuzhong Li,Hongqiang Liao,Wenlong Wang
出处
期刊:ACS Sustainable Chemistry & Engineering
[American Chemical Society]
日期:2024-05-24
卷期号:12 (23): 8792-8805
标识
DOI:10.1021/acssuschemeng.4c01694
摘要
The pores of conventional foam composites easily crack and collapse under internal stress. Fabricating foamed materials (FMs) with high specific strength and excellent pore structure at ambient conditions remains a significant challenge. This study achieved hierarchical reinforcement of waste-based FMs' matrix and pores through systematic control of the "foaming–setting–curing" process. The results demonstrate that adjusting the plastic viscosity and setting time of fresh pastes can improve the pore size distribution and optimize pore microstructures. Concerning modification at the gas–liquid interface, organic additives and hydration products could mutually adsorb and bond at the pore interfaces, thickening pore walls and completing embedded structures. Moreover, the effective variable-pressure foaming process not only stabilizes chemical foaming but also enhances specific strength by accelerating hydration and improving pore wall integrity. Concerning aeration methods, the introduction of copper tailings catalyzed the decomposition of H2O2 at room temperature. Additionally, the coupled effects of multidimensional stable foaming techniques suitable for H2O2 foaming and the underlying mechanism are elucidated. Overall, this research offers a systematic, low-energy strategy for enhancing performance and reinforcing pores in waste-based FMs.
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