摘要:To improve the performance of crushed bamboo-mat composites,a heat treatment was conducted on Neosinocalamus affinis bamboo-mat.The properties of the bamboo composites made with the treated mats were tested.It was observed that the composites made with the treated mats showed darker color and better dimensional stability.However,their bending strengths and horizontal shear strengths decreased with increasing steam pressure and treatment duration.
摘要:Thermochromic wood is a kind of new functional materials,which respond to change of temperature by color change and energy conversion.The classification and mechanism of commonly-used thermochromic materials are presented.Then the previous studies on thermochromic wood are reviewed.The problems existing in the preparation of thermochromic agent,manufacturing technology and performance evaluation of thermochromic wood are also analyzed.
摘要:Pyrolytic-tar made from Larix gmelinii bark was used as a partial substitution for phenol to reduce cost of phenol-formaldehyde(PF)adhesive and increase utilization efficiency of wood waste.The effects of substitution rate,formaldehyde/phenol molar ratio and sodium hydroxide content on the bonding strength of plywood as well as the adhesive costs were evaluated.The results showed that the bonding performance of plywood made with the pyrolytic-tar modified PF resin could meet the Chinese National Standards GB/T 9846.3-2004 required for I-level plywood.
摘要:The combustion performance of regular medium density fiberboard(MDF),laminated MDF and perforated MDF were measured by cone calorimeter.The results showed that the heat release rate,total heat release and effective heat combustion of regular MDF panels were lower than that of decorative melamine laminated panels,but higher than that of the perforated MDF panels.
摘要:Wood structure is one of the primary Japanese residential building constructions.In recent decades,the Japanese wood structures have been constantly standardized and industrialized.The performance and durability of Japanese wood panel structures have been evaluated for more than 50 years.The main characteristics of Japanese wood structural design and manufacturing are discussed in this paper.The successful history and experience will provide valuable information for future development of China’s wood structure industry.
摘要:Tibetan wood structures in Yunnan Province are unique and have a long history,but there are some obstacles for their further development.Based on a recent field study in the Yunnan Tibetan areas,the author presented the structure’s characteristics based on their design,appearance,and material selection.In the author’s opinion,inheriting the traditional Tibetan culture and applying modern techniques for designing wood structures were critical for sustaining development of Tibetan wood structures in Yunnan Province.
摘要:The quality safety of wood-based panel products is closely relevant to human being’s health.The authors analyzed the importance and current situation of quality safety risk assessment on wood-based panel products in China,and suggested to establish corresponding risk assessment organizations,to make and carry out products quality safety inspection programs and to establish quality safety risk information database for wood-based panel products in China.
摘要:How to develop information system for wood-based panel manufacturers has been a key problem to upgrade or transform their production capabilities in China.In this paper,the authors summarize the characteristics of wood-based panel companies and analyze their business transforming process using the information system.They also propose suggestions for guiding companies to improve their transforming and upgrading processes.
摘要:The authors explained the significance of using recycled wood to manufacture furniture in China.After describing both domestic and international classic cases,they summarized the main methods of designing furniture with recycled wood.Finally,they proposed some suggestions and future direction for using recycled wood to design and manufacture furniture.
摘要:Hydro-thermal pretreatment was used to control the thickness and location of the compression layer of Chinese white poplar samples when they were hot-compressed.The results showed that with increasing pretreatment time,the depth and thickness of the compression layer were increased.Therefore,the modulus of rupture(MOR)and modulus of elasticity(MOE) of the samples were increased.
关键词:Chinese White Poplar;hydro-thermal pretreatment;compressing;compression layer;densification
摘要:In order to develop carbendazim fungicide for wood-based products,2-carbamate-benzimidazole carbendazim(MBC) was modified to 2-carbamate-5-methyl-benzimidazole(MMBC)·Mold resistance and leachability of MMBC were tested.The results showed that mold resistance of MMBC was better than pentachlorophenol sodium(Na-pcp) and leachability was improved compared with MBC.