Influence of drying temperature on the physical and mechanical properties of rubberwood

Sahrim A., . and Choo K. T., . and How S. S., . and Sik H. S., . and Sarani Z., . and Mohamad Omar M. K., . Influence of drying temperature on the physical and mechanical properties of rubberwood. pp. 181-189. ISSN 0128-1283

Commercial drying of rubberwood at high temperature is still unknown. This study investigated the influence of high temperature on the physical and mechanical properties of rubberwood. Experiments were carried out at 60 C (conventional temperature) and at high temperatures namely 100 120 130 140 and 150 C. Both quarter and flatsawn showed average thickness shrinkage of less than 7 ( 2 mm) and average width shrinkage of less than 5 ( 5 mm) after drying at conventional and high temperatures. Rubberwood exhibited greater shrinkage in thickness than in width for both radially and tangentially oriented specimens that were dried at temperatures above 100 C. The incidence of serious collapse and/or honeycombing was not observed at all the high temperatures tested. Improvement of various mechanical properties was observed in all high temperature-dried samples up to 130 C compared with conventionally dried material. The enhancement of specific strength properties such as hardness compression parallel to grain and shear strength could be observed up to 150 C.

Full text available from: Official URL: http://www.frim.gov.my/v1/JTFSOnline/jtfs/v21n3/18...

Abstract

Commercial drying of rubberwood at high temperature is still unknown. This study investigated the influence of high temperature on the physical and mechanical properties of rubberwood. Experiments were carried out at 60 C (conventional temperature) and at high temperatures namely 100 120 130 140 and 150 C. Both quarter and flatsawn showed average thickness shrinkage of less than 7 ( 2 mm) and average width shrinkage of less than 5 ( 5 mm) after drying at conventional and high temperatures. Rubberwood exhibited greater shrinkage in thickness than in width for both radially and tangentially oriented specimens that were dried at temperatures above 100 C. The incidence of serious collapse and/or honeycombing was not observed at all the high temperatures tested. Improvement of various mechanical properties was observed in all high temperature-dried samples up to 130 C compared with conventionally dried material. The enhancement of specific strength properties such as hardness compression parallel to grain and shear strength could be observed up to 150 C.

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Item Type:	Article
AGROVOC Term:	Shrinkage
AGROVOC Term:	Drying
AGROVOC Term:	Mechanical properties
AGROVOC Term:	Physical properties
AGROVOC Term:	Temperature
AGROVOC Term:	Hevea brasiliensis
AGROVOC Term:	Rubber
AGROVOC Term:	Moisture content
AGROVOC Term:	Strength
AGROVOC Term:	Elasticity
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:27
URI:	http://webagris.upm.edu.my/id/eprint/21676

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