摘要:The author reviewed the prosperous development of the Chinese wood panel industry in the past ten years.The review analyzed the current national policies including tax deductions for wood-based panel manufacturers and financing benefits for utilizing renewable raw materials.The favorable policies have provided good opportunities for Chinese wood-based panel manufacturers to accelerate reorganization of wood-based panel industry,upgrade manufacturing facilities,develop new markets,and promote technology innovation and brand name superiority.It was expected that the Chinese wood-based panels industry should focus on value-added wood-based panel products.
关键词:wood-based panel;tax policy;investment and financing policy;structure adjust
摘要:The author reviewed the history,current status,major technical breakthroughs,and applications for newly developed bamboo scrimber products in China.Some existing barriers facing the products were analyzed and future prospects for promoting them were also presented.
关键词:bamboo scrimber;current status;technology and equipment
摘要:This article reviewed the bamboo liquefaction and utilization research in China and concludes that bamboo utilization efficiency should be improved.It also introduced a project called "Manufacturing technology of light-weight and high-strength wall materials by liquefaction and foaming from small-diameter bamboo" with goals of utilizing small diameter bamboo and bamboo processing residues.A series of technical difficulties were overcome in bamboo catalytic liquefaction,forming process,and wall material preparation.The new material with its advantages of flame-retardant,light-weight,and high-strength showed great potential in the bamboo product industry.
关键词:utilization of bamboo;liquefaction;wall material
摘要:A dielectric method for monitoring adhesive curing behavior during the wood-based panel hot pressing process was developed by the authors.The principle of this technique was based on the change of dielectric loss during adhesive solidification.The dielectric loss factor was calculated by a dielectric constant which could be measured by embedded capacitor sensors and the dielectric loss angular tangent value.A field study verified that the in situ monitoring results could provide prompt feedback for optimizing adhesive formulation and the wood-based panel hot-pressing process.
摘要:Micro fibrils produced from poplar pulp were mixed with melamine formaldehyde resin and used as a immersion treatment for straw fiberboard.The authors evaluated specimens cut from the treated fiberboard for weight-gain and moisture-resistance rates.The results showed that as the micro fibril concentration and treatment duration increased,the fiberboard weight-gain and moisture-resistance rates improved considerably.
摘要:The authors introduced the status and application of a newly developed wood identification technology based on deoxyribonucleic acid(DNA).Compared with the traditional wood identification(wood anatomy) method,the DNA method demonstrates potential in species identification which is very difficult to accomplish by using the traditional anatomical technology.The authors also described research progress and technical problems using DNA for wood identification.
摘要:The authors summarized the standards and codes related to heavy metal detection for wood products produced in China and other developed countries.They then introduced five commonly-used methods to detect heavy metals and analyzed ways to adapt these methods to detecting heavy metals in decorative products used in wood-based panels.The result is expected to provide comments and suggestions for establishing a corresponding Chinese national standard.
关键词:heavy metal;preparation of samples;surface decorated;wood based panels
摘要:The authors analyzed energy consumption for the three commonly-used veneer dryers: a three layer net-belt,a three layer roller,and an imported single layer roller and net-belt combination.The analysis was conducted by comparing the manufacturers given parameters to the actual values determined from the drying process.The results showed more than 60% of the total energy consumption was released from discharged humid air from veneer dryers.It was also found that water condensation and leakage consumed about 10 to 17% of the overall energy.Finally,recommendations and suggestions were made to recycle the heated water and discharged air to improve energy efficiency.
关键词:veneer dryer;heat energy consumption;net-belt;roller;roller and net-belt combination
摘要:With the rapid development of China’s engineered wood flooring industry,there have been many new products and new technologies that have emerged in this market.To ensure product quality and consumers’ confidence,the authors reviewed the current status of China’s engineered wood flooring industry and the standard that applies to it.The differences between China’s engineered wood flooring standard and the corresponding standards in Europe,US,and Japan were compared.According to the results of this investigation and analysis,suggestions for improving the Chinese standard were presented.
摘要:The furniture industry in China has made great progress in recent years.However,limited wood resources has presented a major barrier for the rapid growth of the solid wood furniture industry.To improve wood utilization efficiency and add value to small diameter trees,the authors investigated a possible technique of making solid wood furniture with small diameter wood and other wood-related residues.
关键词:small diameter timber;secondary forest;bonding;laminated lumber;solid wood furniture parts
摘要:The authors conducted an experiment to improve drying efficiency for 63 mm thick Pinus massoniana broads based on the currently used drying schedule.The results showed that the newly developed drying schedule greatly improved drying efficiency,thereby reducing the total drying time by 21% and increasing board quality,which met the 2nd level of national standard GB/T 6491-1999.The improved drying efficiency resulted in reduced manufacture costs.
摘要:Wood drying and preservative treatments were commonly used to improve durability of wood elements for ancient building maintenance.To provide basic knowledge and reference of wood protection and restoration for other ancient buildings,the authors summarized the processes,quality requirements,and quality controls of wood drying and preservation during restoration of three major buildings in Tibet.