Abstract
Aluminum hydroxide [Al(OH)3] film on wood substrate has been synthesized by means of the hydrothermal (HT) method for improvement of wood’s mechanical properties and resistance to combustion. The HT temperature was set to 100°C and 120°C, and the reaction time varied from 4 h to 10 h. X-ray diffraction (XRD) and X-ray photoelectron spectrometry (XPS) results show that the thin film grown on wood surface was amorphous Al(OH)3 and the relative crystallinity of treated woods slightly improved. SEM observation revealed that the Al(OH)3 film is composed of regular micro/nano-sized spheres, whose production and size increase with the reaction time, and some AlO(OH) structures emerged at 120°C with reaction times longer than 6 h. The storage modulus of the wood treated at 100°C and 120°C for 8 h can be improved by 30%, while the viscoelastic properties are also influenced by the HT treatment and Al(OH)3 coating. The limiting oxygen index of raw wood rose from 24.7% to 27.9% after the treatment, which can be interpreted as a moderate improvement of the fire resistance.
Acknowledgments
This work was financially supported by National Natural Science Foundation of China (No. 31170523), and was also supported by Doctoral Fund of Ministry of Education of China (No. 20120062130001). The authors give their sincere thanks to Professor Oskar Faix for his hard work to improve the technical quality of this paper.
References
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©2014 by De Gruyter
Articles in the same Issue
- Frontmatter
- Original Articles
- Modeling of alkaline extraction chemistry and kinetics of softwood kraft pulp
- Synthesis and fundamental HSQC NMR data of monolignol β-glycosides, dihydromonolignol β-glycosides and p-hydroxybenzaldehyde derivative β-glycosides for the analysis of phenyl glycoside type lignin-carbohydrate complexes (LCCs)
- Iridoids from the stems of Viburnum erosum
- 6-Pentyl-α-pyrone as an anti-sapstain compound produced by Trichoderma gamsii KUC1747 inhibits the germination of ophiostomatoid fungi
- ESR studies on the free radical generation in wood by irradiation with selected sources from UV to IR wavelength regions
- Synthesis of aluminum hydroxide thin coating and its influence on the thermomechanical and fire-resistant properties of wood
- Lignin distribution in waterlogged archaeological Picea abies (L.) Karst degraded by erosion bacteria
- Assessment of covalent bond formation between coupling agents and wood by FTIR spectroscopy and pull strength tests
- Effect of hot water extracted hardwood and softwood chips on particleboard properties
- The interrelation between microfibril angle (MFA) and hygrothermal recovery (HTR) in compression wood and normal wood of Sugi and Agathis
- Chemical remediation of wood treated with micronised, nano or soluble copper preservatives
- Energetic investigation of the fatigue of wood
- Chemical and ultrastructural changes in compound middle lamella (CML) regions of softwoods thermally modified by the Termovuoto process
- Short Note
- Properties of young Araucaria heterophylla (Norfolk Island pine) reaction and normal wood
- Effect of specimen configuration on the measurement of off-axis logarithmic decrement of solid wood measured by longitudinal and flexural vibration tests
Articles in the same Issue
- Frontmatter
- Original Articles
- Modeling of alkaline extraction chemistry and kinetics of softwood kraft pulp
- Synthesis and fundamental HSQC NMR data of monolignol β-glycosides, dihydromonolignol β-glycosides and p-hydroxybenzaldehyde derivative β-glycosides for the analysis of phenyl glycoside type lignin-carbohydrate complexes (LCCs)
- Iridoids from the stems of Viburnum erosum
- 6-Pentyl-α-pyrone as an anti-sapstain compound produced by Trichoderma gamsii KUC1747 inhibits the germination of ophiostomatoid fungi
- ESR studies on the free radical generation in wood by irradiation with selected sources from UV to IR wavelength regions
- Synthesis of aluminum hydroxide thin coating and its influence on the thermomechanical and fire-resistant properties of wood
- Lignin distribution in waterlogged archaeological Picea abies (L.) Karst degraded by erosion bacteria
- Assessment of covalent bond formation between coupling agents and wood by FTIR spectroscopy and pull strength tests
- Effect of hot water extracted hardwood and softwood chips on particleboard properties
- The interrelation between microfibril angle (MFA) and hygrothermal recovery (HTR) in compression wood and normal wood of Sugi and Agathis
- Chemical remediation of wood treated with micronised, nano or soluble copper preservatives
- Energetic investigation of the fatigue of wood
- Chemical and ultrastructural changes in compound middle lamella (CML) regions of softwoods thermally modified by the Termovuoto process
- Short Note
- Properties of young Araucaria heterophylla (Norfolk Island pine) reaction and normal wood
- Effect of specimen configuration on the measurement of off-axis logarithmic decrement of solid wood measured by longitudinal and flexural vibration tests