Feasibility of using recycled newspapers as a fiber source for dry-process hardboards

Journal Article · · Forest Products Journal; (United States)

OSTI ID:6276892

Krzysik, A M; Youngquist, J A; Rowell, R M; Muehl, J H; Chow, Poo; Shook, S R ^[1]

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1. Univ. of Illinois, Urbana, IL (United States)

Dry-process hardboard represents a favorable option for recycling old newspaper fibers. However, dry-process boards tend to be less dimensionally stable than boards processed by other methods. The objective was to determine the mechanical and physical properties of 3-mm and 11-mm dry-process hard-boards made from various ratios of wood fiber to old newspaper (ONP) (100:0, 50:50, and 0:100). Two series of 3-mm hardboards were made, one with untreated fiber and the other with acetylated fiber. Resin levels were 3 or 7%, and all 3-mm hardboards had 0.5% wax. The 11-mm hardboards were made with untreated fiber, 5.5% resin, and 2% wax. Boards were tested for static bending and tensile strength properties, water absorption, thickness swell, and linear expansion. As expected, increasing the resin level from 3 to 7% generally improved all properties. Acetylation substantially improved the water absorption, thickness swell, and linear expansion but decreased the mechanical properties of all boards; increasing the amount of ONP caused a corresponding deterioration in mechanical properties, water absorption, and thickness swell.

• OSTI ID: 6276892
• Journal Information: Forest Products Journal; (United States), Journal Name: Forest Products Journal; (United States) Vol. 43:7/8; ISSN FPJOAB; ISSN 0015-7473
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320305* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management
36 MATERIALS SCIENCE
360601 -- Other Materials-- Preparation & Manufacture
360603 -- Materials-- Properties
360606 -- Other Materials-- Physical Properties-- (1992-)
ACETYLATION
ACYLATION
CHEMICAL REACTIONS
COMPOSITE MATERIALS
FEASIBILITY STUDIES
FIBERS
MATERIALS
MECHANICAL PROPERTIES
PAPER
PHYSICAL PROPERTIES
PRODUCTION
RECYCLING