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Effect of Post-Added Water Amount on Pre-Concentrated Bark Foaming Materials by mechanical Stirring

Journal of Renewable Materials 2020年第12期8卷 1607-1616页

作者： Jinxing Li Jingjing Liao Jun Zhang Xiaojian Zhou Hisham Essawy Guanben Du Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products Southwest Forestry UniversityKunming650224China Key Laboratory for Forest Resources Conservation and Utilisation in the Southwest Mountains of China(Southwest Forestry University) Ministry of EducationKunming650224China Department of Polymers and Pigments National Research CentreCairo12622Egypt

In this study,pre-concentrated bark,furfuryl alcohol and other biomass raw materials were used to prepare foaming materials by high-speed mechanical stirring without using a foaming *** investigated the effect of the postadded water amount on the properties of foaming *** particular,we determined basic physical properties of these materials,including the limiting oxygen index(LOI),porosity,thermal conductivity,thermogravimetric analysis,pore size distribution,and *** results of scanning electron microscopy(SEM)indicated that the pore size distribution was uniform and the pore size increased with increasing water *** analysis(TG/DTG)showed that when the temperature reached 410°C,the foam was easily decomposed,the final residual mass was only 2.8%,and water addition had little effect on ***,the amount of post-added water is 5–30 g,the density and compression strength of the foamed materials gradually decreased,while the degree of pulverization *** ranged from 26.1%to 30.79%,and porosity ranged from 81%to 83%.The change in water volume greatly affected the foam’s performance,the performance of foamed material deteriorated as the amount of added water increased,but the effect on thermal conductivity was not very *** highest thermal conductivity was only 0.0179 W/(m·K),still providing excellent thermal insulation.

关键词： Pre-concentrated bark mechanical whipping foamed material performance characterization

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