摘要:In this study,a manufacturing technology of waste paper particleboard was developed preliminary.The influences of 4 variable factors,such as waste paper content,resin ratio,pressing time and pressing temperature,on physical and mechanical properties of the board was analyzed.Results showed that the manufacturing technology was successful.The properties can reach requirements of B type particleboard standard of GB/T 4897—92.
关键词:Waste paper;particleboard;physical and mechanical properties
摘要:In this paper,the difference of shrinkage properties of small diameter birch discs was compared under 3 conditions,such as modified with urea,with UF resin and without any treatment.The drying properties of these discs,measuring methods for discs stress,and basic principles of water transmission were studied.
摘要:The Production line of gypsum particleboard in Shandong Cangsong Building Materials Co.,Ltd.was introduced from Germany.It started to produce gypsum particleboard in Sep.1995.In this paper,some manufacture technological problems were discussed as following:1)quality requirement of raw material and properties of gypsum particleboard,2)manufacturing procedure,3)technological requirement and parameters,4)product quality control,5)product application.
摘要:China’s forest resource is relatively lack and structural shortage of wood will be more critical in the future so that the consumption of wood and wood products must be resourcesaving.In the mean time of enlarging plantation forest resource,we must also improve wood utilization efficiency,save wood resource and use substitutes to wood resources,luxurious consumption of wood products should be limited as well.The efficiency of market operation of wood and wood products must be further improved,so that market mechanism could play a fundermental role in wood resource distribution.There is a possibility for China to be basically selfsufficient in wood and main wood products in year 2010.
摘要:To meet demand for fastgrowth poplar wood bonding,low pressure and short hotpressing time,a new kind of nondewatering ureaformaldehyde resin for poplar plywood with low free formaldehyde content was developed.Testing results showed that bonding strength of three species of polpar plywood bonded with the resin can meet the demand of the National Plywood Standard GB 9846—88.Formaldehyde emission of the plywood can reach JAS F2 or F3 grade according to the species of poplar veneers respectively.
摘要:This paper revealed current developing situations and market trends of additive used in wood adhesives and different effects of the additives on wood adhesive application performance.
摘要:This article introduced the current situation of inorganic bonded woodbased composites industry in China and presented outlook on its new opportunities and prospects. The authors gave their suggestions on policy, research needs, production scale, application technology, environmental protection etc. in order to better develop the inorganic bonded woodbased composites industry in future.
关键词:Inorganic bonded woodbased composites;Wall material reformation;Plaster board