GFA Consulting Group

In the textile industry, various compounds are applied to improve certain properties such as form stability and hydrophobicity. Since cotton textiles mainly consist of cellulose, their chemical composition is very similar to that of wood. Moreover, the requirements with regard to the process in the textile industry resemble to those of wood impregn... ation. The agents are nearly exclusively applied as emulsions (aqueous systems) and the bath in which the textile (or the wood respectively) is submerged has to be stable over a longer period of time so that the reaction does not occurs until a curing phase after the impregnation. In this study, Fagus sylvatica, Pinus syvestris, Hevea brasiliensis and Paulownia fortunei wood are modified by the processes of chemical and thermal modification with several hydrophobation agents. The chemical composition of wood is exchanged by hydrophobic chemical groups, which improve dimension stability and increase the resistance of wood against biodegradation. The chemical agents to be tested are N-methylol compounds, various waxes and silicone compounds. The results from this research are dedicated in the European Patent - EP1716995 (2009) The research is supported by Ministry of Science and Culture of Lower Saxony (Niedersachsen) , DAAD and Georg-August-Universitt Göttingen, Nguyen, H. M., Do, V. T., Ta, T. T. H., Pham, V. T., 2015. Durability of Eucalyptus urophylla plywood modified with mDMDHEU and Cashew Nut Shell Liquid (CNSL). Vietnam Journal of Forest Science. ISSN: 1859 - 0373. Volume No.1. 2015 Le, X. P. and Nguyen, H. M., 2015. Mechanical properties of flooring parquet using chemically modified veneer. Forestry Science and Technology Journal of Vietnam Forestry University. ISSN 1859-3828.Volume No. 1. 2015: 84-93. Nguyen, H. M., Hoang, V. P., 2014. Resistance of Eucalyptus urophylla and Acacia mangium veneer modified with N-Methylol and Cashew Nut Shell Liquid against subterranean termites. Vietnam Journal of Forest Science. ISSN: 1859 - 0373. Volume No.12. 2014 Nguyen, ...Read More