How Fiber Acidity Affected Functional Properties of Dry-Formed Hardboards.

reportActive / Technical Report | Accession Number: ADA038929 | Open PDF

Abstract:

Wood fiber for dry-formed hardboard was refined under pressure from red oak and balsam fir. The fiber of each species was adjusted to four acidity levels before treating with two phenolic resins, an alkaline curing and an acid curing, that differed in degree of polymerization. An optimum fiber acidity at which most strength properties reached their maximum was found for each of the two resins. By adjusting fiber acidity, red oak boards had strength properties comparable to balsam fir boards. Boards from various blends of the red oak and the balsam fir fiber adjusted to a common pH value possessed strengths of comparable values. Linear and thickness stability were more dependent on species than were other properties. Acidity control was found beneficial in maintaining board quality. Author

Author(s):
Myers, Gary C.
Author Organization(s):
FOREST PRODUCTS LAB MADISON WIS
Descriptive Note:
FForest Service research paper,
Pagination:
0011

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
FSRP-FPL-282
 Subject Terms
Joint Capability Areas:
JCA_6_Net Centric; JCA_1.3_Human Capital Management; JCA_1_Force Support; JCA_6.4.1_Secure Information Exchange; JCA_1.2.5_Lessons Learned; JCA_1.3.2_Personnel Management
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*PH FACTOR, *WOOD, *FIBERBOARD, PHYSICAL PROPERTIES, STRENGTH(MECHANICS), CURING AGENTS, BINDERS, ACIDS, PHENOLIC PLASTICS, WOOD PULP
Field(s)/Group(s):
Wood, Paper and Related Forestry Products
Keyword(s):
Red oak, Balsam fir, Oak wood, Fir wood
Report Date:
1976 Jan 01