双层结构MF-MF/CA复合气凝胶的制备及吸声性能研究  

Preparation and Sound Absorption Properties of MF-MF/CA Composite Aerogels with Double-layer Structure

作　　者：高锦明 廖阳淼 易欣文 王焱鑫 姚楚[1] GAO Jin-ming;LIAO Yang-miao;YI Xin-wen;WANG Yan-xin;YAO Chu(School of Materials Science and Engineering,Wuhan Institute of Technology,Wuhan 430205)

机构地区：[1]武汉工程大学材料科学与工程学院,武汉430205

出　　处：《胶体与聚合物》2025年第1期7-9,共3页Chinese Journal of Colloid & Polymer

基　　金：湖北省自然科学基金(2022CFB630);湖北省教育厅研究项目(Q20221511);武汉工程大学省级大学生创新创业训练计划项目(S202210490008)。

摘　　要：本文以微晶纤维素(MCC)为原料,环氧氯丙烷为交联剂,三聚氰胺泡沫(MF)为骨架,制备具有双层结构的MF-MF/CA复合气凝胶,研究了MCC溶液浓度、浸泡高度对复合气凝胶微观形貌和吸声性能的影响。结果表明,复合气凝胶中MCC气凝胶薄膜覆盖在MF泡孔上形成闭孔结构,且闭孔占比随着MCC溶液浓度提高;MF-MF/CA复合气凝胶层间界面清晰、结合稳固,当浸泡高度为10 mm、纤维素溶液浓度为3 wt%和4 wt%时,层间协同作用最佳,对声波的吸收效果最好。This study developed MF-MF/CA composite aerogels with a double-layer structure using microcrystalline cellulose(MCC) as the raw material,epichlorohydrin as the cross-linking agent,and melamine foam(MF) as the skeleton.The effects of MCC solution concentration and soaking height on the microstructure and sound absorption properties were investigated.Results show that increasing MCC concentration enhances the obturator structure formation on MF cells,improving sound absorption.The composite aerogels exhibit a clear interlayer interface,with optimal sound absorption achieved at a 10 mm soaking height and MCC concentrations of 3 wt% or 4 wt%.

关 键 词：纤维素 三聚氰胺 气凝胶 双层结构 吸声 

分 类 号：TQ322[化学工程—合成树脂塑料工业]