森林与环境学报2025，Vol.45Issue(3)：328-336,9.DOI:10.13324/j.cnki.jfcf.202410033
泥炭土-聚乙烯醇发泡材料的制备工艺优化
Optimization of the preparation process of peat soil-polyvinyl alcohol foam materials
摘要
Abstract
To explore a more applicable overall cultivation substrate for the promotion and application of three-dimensional greening,this study prepared a molded peat soil-polyvinyl alcohol(PVA)foam material by mechanical stirring and physical foaming of the mixture of the modifier toluene diisocyanate(TDI)and the surfactant sodium dodecyl sulfate(SDS)with the raw materials(PVA and peat soil).The effects of PVA dosage,TDI dosage,SDS dosage,and foaming temperature on the bulk density,apparent density,wet density,porosity,and water absorption rate of the peat soil-PVA foam material were investigated by the single-factor method.The apparent morphology of the peat soil-PVA foam materials with different SDS dosages was compared.The results showed that the peat soil-PVA foam material prepared with 7%(mass fraction)PVA,0.25%(mass fraction)TDI,and 0.54%(mass fraction)SDS at the foaming temperature of 60℃had the best properties,with the bulk density of 0.103 g·cm-3,the apparent density of 0.403 g·cm-3,the wet density of 0.856 g·cm-3,the porosity of 77%,and the water absorption rate of 826%(water absorption for 1 h).According to the surface microstructure of the foam material,SDS can improve the internal pore structure of the foam material.Compared with the common three-dimensional greening substrates on the market,the peat soil-PVA foam material is an overall material after foaming molding,with smaller density but higher porosity and water absorption rate.It has the advantages of a simple preparation process and a low cost and meets the requirements of the General Technical Standard for Three-Dimensional Greening Cultivation Substrates:T/CABEE 005-2020.It can be used as a new choice for three-dimensional greening cultivation substrates.关键词
泥炭土/聚乙烯醇/发泡材料/立体绿化基质/制备工艺Key words
peat soil/polyvinyl alcohol/foam material/three-dimensional greening substrate/preparation process引用本文复制引用
曾泽林,戚兴来,吴美强,周建斌,饶久平..泥炭土-聚乙烯醇发泡材料的制备工艺优化[J].森林与环境学报,2025,45(3):328-336,9.基金项目
福建省高校产学研合作项目"节能环保装配式立体绿化新技术研究"(2021Y4009) （2021Y4009）
福建省林业科技推广项目"立体绿化整体栽培基质发泡材料的开发及推广应用"(2022TG17) （2022TG17）
福建省财政厅专项"城市园林绿化专用轻质整体栽培基质研制"(KKY22042XA). （KKY22042XA）
