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Anyene, C. C.
Department of Agricultural and Bio-environmental Engineering, Federal Polytechnic, Oko, Nigeria.
Onwuka, U. N.
Department of Agricultural and Bio-Resources Engineering, Michael Okpara University of Agriculture, Umudike, Nigeria.
Nwajinka, C. O.
Department of Agricultural and Bio-Resources Engineering, Nnamdi Azikiwe University, Awka, Nigeria.
Nsofor, P. S.
Department of Agricultural and Bio-environmental Engineering, Federal Polytechnic, Oko, Nigeria.
ABSTRACT
The study was on the design and construction of a cold
press hydraulic particle-board compaction machine. The developed machine comprises of the frame, fixed platen,
movable platen, premix mat platter, and the prime mover (1.0-tonne hydraulic
cylinder). The framework of the machine presented a respective permissible
force, working stress, bending stress, operational deformation, and platen
thickness of 10,362.303N, 103.005 N/mm2, 2,302.7Nmm2, 0.3605mm, and 15mm.The
machine was evaluated by using it to compact admixtures of rice husk and
sawdust from 51mm mat thickness to 25mm. Finished particleboards of relative
dimensions of 1000mm500mm 25mm were produced from the differently
constituted base and adhesive materials. The compaction result showed that the
machine was effective in the consolidation of the admixture mat into boards of
consistent dimensions and optimized base-material and binder blend. The results show that the different categories
of particleboards maintained evident variations in their physical
characteristics. After drying the produced boards, it was observed that the “S+RP board” reduced most with a final length of
0.970m and the “S+RS board” reduced least with a final length of 0.990m. The
“RP board” reduced most in width to 0.485m while “SS
board” reduced least to 0.492m. The “S+RP board” reduced most in thickness to 0.015m and the “SS board”
reduced least to 0.025m. The “S+RP board” has the least volume of 0.071m3
and the “SS board” has the highest volume of 0.21m3. “The S+RP board” has the least weight of
1.400Kg while the “RS board” has the highest weight of 3.100Kg. The “RS board”
is the highest dense board by 28.181 Kg/m3and the “SP board” is the least dense board by
12.000Kg/m3. The “Saw dust plus Rice husk
(S+R) category of board presented a more strong and stable characteristics
which could be attributed to the blend of the properties of two different base
materials. Moreover,
the study ventured into bridging the gap of little or no indigenously
produced technologies used in waste handling and processing, especially as it concerns
rural and urban generated agricultural and lignocellulose materials conversion
to useful engineering structural products like panel boards. It is imperative to recommend that
automation and hot surface finishing principles should be adapted to the
machine to ensure the production of structurally standardized particleboards.
Keywords: Particleboard, compaction machine, hydraulic compaction, premixed material, lignocellulose
https://doi.org/10.33922/j.ujet_v8i2_3
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Published
Thursday, December 22, 2022
Issue
Vol. 8 No. 2, December 2022
Article Section
GENERAL
The contents of the articles are the sole opinion of the author(s) and not of UJET.
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