摘要:This article explored the technical feasibility of producing MDF from bamboos. The main technological parameters and some factors related to the quality of the board were studied. The results showed that the panel properties can be obviously affected not only by the parameters of defibering and hot-pressing, but also by the amount of adhesive and water-repellent agent. It is possible to manufacture high quality MDF from bamboos if these factors can be properly controlled.
摘要:In this article, the relationship between the properties of gypsum particleboard and particle geometry, bark content as well as gypsum quality was discussed The results from the test showed that maintaining the length of wood particles is profitable to enhance the bending strength of the gypsum paticleboard; with the increase of the bark contents in wood partic]es, the bending strength of the board will be declined, but a small amount of barks mixed into wood particles as a filler can increase the strength significantly; the gypsum particleboard produced by different plants have great different properties; the evident relationship between the properties of gypsum-bonded particleboards and the quality of gypsum measured according to the industrial standard of gypsum plaster for building purpose as well as phase composition is not found
摘要:Pretreatments prior to kiln-drying,high efficient kiln-drying equipment, drying process and practical value of drying of Paulownia lumber are discussed in this paper. From industrial practice, it was shown that high efficient drying of paulownia lumber is feasible.
摘要:This paper deals with some factors affecting on liquor phase acetylation of wood from three species (Pinus massoniana, Populus cathayana, Betuls platyphylla), and the dimension stability and decay resistance of acetylated wood. When acetic anhydride and xylene were used as treating liquorat the volume rate of 1" 1, the optimum reaction temperature was 120℃, and the reaction period was 7 to 11 hours. The antishrink efficiency of aeetylated wood could reach more than 60% when weight percent gain (WPC) was 15% or more The decay resistance of treated wood blocks with WPG of 11.75-17.98% was 3 to 34 times higher than that of the controls.
摘要:Zirconia High-temperature Humidometer is a newly-developed equip ment, which is characterized by high heat efficiency and energy saving used in dryer In this paper, a great deal of test data and the principle of the equipment are a analyzed, a brief description on testing methods and solution to some technical problems during developing are also presented.
摘要:After analyzing the needs of developing composite products from non-wood fibrous raw materials in China, this paper presents some research work done recently at CRIWI regarding manufacture of composite products from bamboo, flax, bagasse, cotton stalk, reed, soyabean stalk and tobacco stalk etc. It is found that these raw materials are suitable for making composite boards, which can be used for many applications as substitutes for composite boards made from wood raw materials. The future for developing non-wood fibrous composite products in China is promising.