A Study on the Characteristic and Correlation between Small Chamber and Desiccator Method of the Formaldehyde Emissions from Composite Wood Products

Author(s):  
Yiseul Kwon ◽  
Arong Kim ◽  
Inkeun Shim ◽  
Jongchun Lee ◽  
Hyenmi Chung ◽  
...  
2019 ◽  
Vol 69 (4) ◽  
pp. 305-312
Author(s):  
Robert Rose ◽  
Scott Leavengood ◽  
Jeffrey J. Morrell

Abstract The properties of several modified wood products were evaluated using North American standards to provide comparative data for architects seeking to use these materials. In general, modified wood products had lower moisture uptakes and less shrinkage than unmodified products. Acetylated materials were highly resistant to fungal decay, whereas thermally modified and furfurylated materials were classified as decay resistant. All materials were susceptible to mold, although the nonacetylated moisture-resistant medium-density fiberboard was most susceptible. Thermally modified and furfurylated materials were similar in mold susceptibility to untreated radiata pine sapwood, whereas acetylated materials appeared to be more mold resistant.


Author(s):  
Yujin Kang ◽  
Hyunjin Kim ◽  
Jun-Gyu Lee ◽  
Jungmin Ryu ◽  
Inkeun Shim ◽  
...  

1988 ◽  
Vol 12 (2) ◽  
pp. 102-107
Author(s):  
William G. Luppold

Abstract Furniture manufacturers in the United States are major users of a variety of wood products. In the last two decades, traditional wood products, such as hardwood lumber, veneer, and plywood have been, in part, replaced by composite panel products, such as particleboard, hardboard, and medium-density fiberboard. This paper examines the uses of traditional and composite wood products by the wood household, upholstered household, and commercial furniture industries in descriptive and numerical terms. The analysis indicates that the substitution of composite products for traditional hardwood products has subsided in recent years in the household wood furniture industry but has continued in the commercial furniture industry. Strong growth in softwood lumber use has occurred in the household wood industry and the household upholstered furniture industry but not in the commercial furniture industry. Although hardwood lumber has been displaced by softwood-based composite panel products, greater relative decreases have occurred in hardwood veneer and veneer core plywood use because of composite panel substitution. Most recent market activities, however, indicate increased use of hardwood lumber in furniture production in the 1980s. South. J. Appl. For. 12(2):102-107.


Composites ◽  
1970 ◽  
Vol 1 (5) ◽  
pp. 322
Author(s):  
D. Narayanamurti ◽  
B.S. Aswathanarayana

2006 ◽  
Author(s):  
Dr. Arthur J. Ragauskas
Keyword(s):  

2020 ◽  
Vol 71 (2) ◽  
pp. 157-162 ◽  
Author(s):  
Viktor Savov ◽  
Petar Antov

Free formaldehyde emissions from wood-based panels, especially in indoor applications, pose serious risks to human health at certain concentrations. Prolonged exposure to formaldehyde can cause adverse health effects including eye, nose and throat irritation, other respiratory symptoms and cancer. As a consequence, new formaldehyde emission limits for composite wood products were established in Europe, USA and Japan. This, together with the stricter environmental legislation are the main driving factors for shifting the scientific and industrial interest from the traditional formaldehyde-based synthetic resins to the new bio-based adhesives for production of eco-friendly wood-based panels. The lignin-based products are one of the most prospective ecological alternatives to the traditional formaldehyde resins. The main interest in lignin is due to its phenolic structure with several favourable properties for the formulation of wood adhesives such as high hydrophobicity and low polydispersity. The present article is aimed at studying the possibilities for using lignosulfonate as an adhesive for the production of eco-friendly MDF. Regression models describing the impact of lignosulfonate concentration and hot pressing temperature on the exploitation properties of MDF panels were developed. The individual and combined impact of both factors was analysed in order to determine the optimal exploitation properties of the panels.


Composites ◽  
1970 ◽  
Vol 1 (5) ◽  
pp. 322
Author(s):  
D. Narayanamurti ◽  
B.S. Aswathanarayana

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