Mingzhu Pan; Dingguo Zhou; Tao Ding; Xiaoyan Zhou
March 2010
BioResources;2010, p758
Academic Journal
Rice straw fiberboard was made using 12 wt % urea-formaldehyde (UF) resin as binder and 1.0 wt % polymeric methylene diphenyl diisocyanate (pMDI) and 1.2 wt % wax emulsion as water retardants. The prepared fiberboards were heat-treated at 120, 150, 185, and 210°C in the presence of steam in a high-temperature dry kiln, respectively for 90 min. The effect of water retardants and heat treatment on the water resistant and some mechanical properties of the fiberboards were investigated. It was found that the water resistance of the rice straw fiberboard could not be improved by adding wax emulsion. The use of pMDI to the system significantly increased the interfacial strength and reduced 24-h thickness swelling (TS) compared to the boards with or without wax emulsion. After heat treatment, the TS was significantly decreased due to the decrease in the free reactive hydroxyl group content of rice straw fiber. Some mechanical properties of the fiberboards, such as the internal bonding strength, modulus of elasticity, and modulus of rapture were dramatically reduced with increasing temperature from 120°C to 210°.


Related Articles

  • AMF mineral fibreboard is world class.  // PPI: Pulp & Paper International;Apr2005, Vol. 47 Issue 4, BELLMER INFO 52 p3 

    Reports that the mineral fiberboard quality from Grafenau's factor in Bavaria has achieved worldwide recognition.

  • An experimental study of microwave pre-heating of an MDF fiber mat: Moisture and temperature distribution and the impact on hot-pressing. Deng, James; YongQun Xie; Martin Feng // Forest Products Journal;Jun2006, Vol. 56 Issue 6, p76 

    This article describes the experimental study of preheating a medium density fiberboard fiber mat using microwave energy before hot-pressing. The experimental results showed flint microwave preheating not only increases the overall mat temperature with high energy efficiency within a very short...

  • NATURAL DURABILITY AND PHENOLIC CONTENT IN DRIED SCOTS PINE HEARTWOOD. Sehlstedt-Persson, Margot; Karlsson, Olov // BioResources;2010, p1126 

    The durability of Scots pine heartwood has previously been shown to be affected by the industrial drying process of sawn lumber. The durability of heartwood from boards dried at temperatures between 20°C-110°C was studied by measuring the mass loss in a decay test with a brown rot fungus...

  • Shooting in the right paper direction. Swales, Darren // Pulp & Paper;Dec2004, Vol. 78 Issue 12, p25 

    Presents information on papermaking processes used for several types of paper. Newsprint; Alkaline fine paper; Linerboard.

  • Papermaking Chemicals Develop Rapidly. Xia Hualin // China Chemical Reporter;8/26/2005, Vol. 16 Issue 24, p21 

    Reports on developments in the papermaking chemicals industry in China. Number of paper and paperboard producers in 2004; Projected increase in the market demand of papermaking chemicals by 2015; Companies that have made investments in the papermaking chemical sector.

  • Build 'em up, knock 'em down.  // Printing World;12/2/2004, Vol. 288 Issue 11, p68 

    The article discusses the coming up of some use of the surplus medium density fibreboard (MDF) in Great Britain. Relief has arrived in the form of a press release from Excelar which says that papermaking trials have shown that fibre recycled from MDF using the novel Fibresolve process could be...

  • Moment resistance of multiscrew L-type corner joints. Zhang, Jilei; Efe, Hasan; Erdil, Yusuf Z.; Kasal, Ali; Han, Ninglong // Forest Products Journal;Oct2005, Vol. 55 Issue 10, p56 

    This study investigated the effects of screw diameter and length, loading, board material, board surface condition, and gluing, on moment resistances of three-screw L-type comer joints. Wood-based composite panels utilized in constructing joint specimens of this study were I18 mm in thickness....

  • Microstructures of a Powder Metallurgy-Hot-Isostatically Pressed Super Duplex Stainless Steel Forming in Industrial Heat Treatments. Smuk, O.; Nenonen, P.; Hänninen, H.; Liimatainen, J. // Metallurgical & Materials Transactions. Part A;Jul2004, Vol. 35 Issue 7, p2103 

    The microstructures of a powder metallurgy/hot-isostatically pressed super duplex stainless steel, designed and manufactured for massive components of paper machines, were studied after heat treatments simulating the industrial production, lit was shown that copper precipitates in the ferrite...

  • Continued Evolution of Coated Paper, Board Will Rely on Formulation "Building Blocks". Jones, J. Phillip E. // Pulp & Paper;Jan2004, Vol. 78 Issue 1, p46 

    Discusses the importance of being able to control coating pigment structure in the development of paper and paperboard grades for increasingly demanding end users. Significance of equipment and process developments in developing paper grades; Information on the evolution of pigments; Ways to...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics