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Estimation of demand for wood panels in Iran by the year of 2012.

Journal of Forestry Research 2009年第A2期20卷 179-182,I0004页

作者： Majid Azizi Payam Ghorbannezhad Hamid Hatefnia Department of wood and paper sciences and technology College of natural resources University of Tehran P.O. Box： 31585-4314 Karaj lran

Considering increasing rate of Iran population and consumption of wood panels, the authors investigated the per capita consump- tion of wood panels during the years from 1997 to 2007. The exponential smoothing method was used to obtain a per capita consumption panern of wood panels in lran for estimating demand of wood panels by the year of 2012. Results show that the consumption of particleboard, fiberboard, and medium density fiberboard in lran will increase by 33%, 72% and 107 %o, respectively, by the year of 2012; however, the consumption of plywood will increase only by 7% by 2012. The deficient amount of wood panels in Iran is estimated over 1400 000 m^3. The results of this study provide the technique reference for planners of wood panel industries in Iran in capital investment decisions.

关键词： wood panels exponential smoothing estimating Iran wood panel demand

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Soy Protein Isolate Non-Isocyanates Polyurethanes(NIPU)wood Adhesives

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Journal of Renewable Materials 2021年第6期9卷 1045-1057页

作者： Xinyi Chen Antonio Pizzi Xuedong Xi Xiaojian Zhou Emmanuel Fredon Christine Gerardin LERMAB University of LorraineEpinal88000France Yunnan Key Laboratory of wood Adhesives and Glue Products Southwest Forestry UniversityKunming650224China LERMAB University of LorraineNancy54000France

Soy-protein isolate(SPI)was used to prepare non-isocyanate polyurethane(NIPU)thermosetting adhesives for wood panels by reacting it with dimethyl carbonate(DMC)and hexamethylene *** linear as well as branched oligomers were obtained and identified,indicating how such oligomer structures could further cross-link to form a hardened *** structures were observed,namely carbamic acid-derived urethane linkages coupled with lactam *** curing of the adhesive was followed by thermomechanical analysis(TMA).It appeared to follow a two stages process:First,at a lower temperature(maximum 130℃),the growth of linear oligomers occurred,finally forming a physically entangled *** appeared to collapse and disentangle,causing a decrease of MOE,as the temperature *** appears to be due to the ever more marked Brownian movements of the linear oligomer chains with the increase of the ***,chemical cross-linking of the chains appeared to ensue,forming a hardened *** was shown by the thermomechanical analysis(TMA)showing two distinct MOE maxima peaks,one around 130℃ and the other around 220℃,with a very marked MOE decrease between the *** panels were prepared and bonded with the SPI-NIPU wood adhesive and the results obtained are *** adhesive appeared to pass comfortably the requirements for dry strength of relevant standards,showing to be suitable for interior grade plywood *** did not pass the requirements for wet ***,addition of 15%of glycerol diglycidyl ether improved the wet tests results but still not enough to satisfy the standards requirements.

关键词： Bio-based wood adhesives soy protein isolate non-isocyanate polyurethanes(NIPU) wood panels MALDI ToF

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Lignocellulosic Micro and Nanofibrillated Cellulose Produced by Steam Explosion for wood Adhesive Formulations

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Journal of Renewable Materials 2022年第2期10卷 263-271页

作者： Saad Nader Felipe Guzman Raphael Becar Cesar Segovia Cecilia Fuentealba Miguel Peirera Evelyne Mauret Nicolas Brosse Laboratoire d’Etude et de Recherches sur le Materiau Bois-Green Process For wood(LERMaB-GP4W) Facultedes Sciences et TechnologiesUniversitede LorraineVandœuvre-les-NancyFrance Laboratoire de Genie des Procedes Papetiers(LGP2) Saint Martin D’HèresFrance Unidad de Desarrollo Tecnologico(UDT) Universidad de ConcepcionCoronelChile Centre d’Essais TEchnique LORrain(CETELOR) EpinalFrance

The reinforcing impact of Lignocellulosic micro and nanofibrillated cellulose(L-MNFCs)obtained from Eucalyp-tus Globulus bark in Urea-Formaldehyde UF adhesive was tested.L-MNFCs were prepared by an environmentally friendly,low-cost process using a combination process involving steam explosion followed by refining and ultra-fine *** L-MNFCs showed a web-like morphology with some aggregates and lignin *** present a mixture of residual fibers and fine elements with a width varying between 5 nm to 20μm,*** effects of the addition of low amounts of L-MNFCs(1%wt.)on the properties of three different adhe-sives(Urea-Formaldehyde UF,Phenol-Formaldehyde PF,and Tannin-Hexamine TH)were studied by the evolution of the pH,the viscosity,and the mechanical *** showed that the viscosity of PF and UF adhesives increased with the addition of L-MNFCs,unlike ***,the addition led to better mechan-ical behavior for the three *** were then prepared using modified UF with L-MNFCs and *** showed that an amount of 1%*** L-MNFCs was sufficient to increase the internal bonding by≈67%,the modulus of elasticity by≈43%,and the modulus of rupture by≈29%.

关键词： Lignocellulosic microfibrils Eucalyptus globulus bark wood adhesives steam explosion wood panels

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Little Secrets for the Successful Industrial Use of Tannin Adhesives:A Review

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Journal of Renewable Materials 2023年第9期11卷 3403-3415页

作者： Antonio Pizzi LERMAB EA 4370-USC INRAEUniversity of LorraineBlvd des AiguillettesNancy54506France

This brief article reviews a very particular and quite narrowfield,namely what has been done and what is needed to know for tannin adhesives for wood panels to succeed *** present fashionable focus on bioadhe-sives has led to producing chemical adhesive formulations and approaches for tannin adhesives as a subject of academic ***,as good and original they might be,are and will still remain a rather empty aca-demic exercise if not put to the test of real industrial trials and industrial *** will remain so without the“little”secrets and techniques outlined here that show that there is a great gap between developing an adhesive formulation in the laboratory and the hard reality to make it work where it does really count,in its industrial *** outlines the fact that even more modern and excellent,newly developed bioadhesive formulations might well miserably fail once tried in the industry if the problems that always arise in their upgrading are not identified and solved,and solved *** also outlines the fact that not only must costs always be taken into account and that a practical and possibly easy-to-handle approach must always be used,but too expensive or complex and unyielding adhesive systems are also often shown to be unusable or unsuitable in industry.

关键词： Tannin adhesive industrial techniques industrial formulations industrial hardeners wood panels wood composites fast press times

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