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Development of a wood fiber composit...

North Carolina State University.

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Development of a wood fiber composite using nonwoven textile technology.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Development of a wood fiber composite using nonwoven textile technology./
作者:	van Dyk, Herman.
面頁冊數:	153 p.
附註:	Advisers: Perry Peralta; Ilona Peszlen.
Contained By:	Dissertation Abstracts International69-09B.
標題:	Agriculture, Wood Technology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3329355
ISBN:	9780549831808

Development of a wood fiber composite using nonwoven textile technology.
van Dyk, Herman.

Development of a wood fiber composite using nonwoven textile technology. - 153 p.

Advisers: Perry Peralta; Ilona Peszlen.

Thesis (Ph.D.)--North Carolina State University, 2008.

The feasibility of manufacturing engineered wood composites with nonwoven textile technology was investigated. Needlepunching is a nonwoven textile process which converts fiber mats into coherent fabric structures with a three dimensional character. This is done by means of barbed needles, which oscillate in a vertical or slanted direction with regards to the surface of the fiber mat. Hardwood fiber was blended with 10% urea formaldehyde and formed into mats (2.3, 4.6 and 6.9 mm thick) with target densities of 550 and 640 kg/m 3. The mats were then sandwiched with polypropylene/polyester bicomponent fiber webs and passed through a needleloom. The barbed needles mechanically bonded the bicomponent web to the wood fiber mat, and pulled some of the polymer fibers through the thickness direction of the mat. Bending and thickness swelling properties of the needlepunched wood composite were qualitatively assessed and compared to medium density fiberboard (MDF).

ISBN: 9780549831808Subjects--Topical Terms:

1031154
Agriculture, Wood Technology.

Development of a wood fiber composite using nonwoven textile technology.
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020 $a 9780549831808
035 $a (UMI)AAI3329355
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100 1 $a van Dyk, Herman. $3 1031153
245 1 0 $a Development of a wood fiber composite using nonwoven textile technology.
300 $a 153 p.
500 $a Advisers: Perry Peralta; Ilona Peszlen.
500 $a Source: Dissertation Abstracts International, Volume: 69-09, Section: B, page: .
502 $a Thesis (Ph.D.)--North Carolina State University, 2008.
520 $a The feasibility of manufacturing engineered wood composites with nonwoven textile technology was investigated. Needlepunching is a nonwoven textile process which converts fiber mats into coherent fabric structures with a three dimensional character. This is done by means of barbed needles, which oscillate in a vertical or slanted direction with regards to the surface of the fiber mat. Hardwood fiber was blended with 10% urea formaldehyde and formed into mats (2.3, 4.6 and 6.9 mm thick) with target densities of 550 and 640 kg/m 3. The mats were then sandwiched with polypropylene/polyester bicomponent fiber webs and passed through a needleloom. The barbed needles mechanically bonded the bicomponent web to the wood fiber mat, and pulled some of the polymer fibers through the thickness direction of the mat. Bending and thickness swelling properties of the needlepunched wood composite were qualitatively assessed and compared to medium density fiberboard (MDF).
520 $a A macro-mechanical model predicting the elastic response of the wood-bicomponent fiber composite panel was developed. The strains at a given stress was determined by means of the model, and compared to strains determined experimentally. The model under predicted the strains along the fiber direction of the bicomponent fiber sheets by approximately 4.03 percent. A greater difference between predicted and measured values was observed in the lateral direction of 10 percent.
520 $a To further understand the behavior of the material, a hygro expansion model was developed for a wood-bicomponent fiber composite panel. The dimensional changes predicted by the model due to moisture fluctuation were compared to experimental data. No significant difference was found between the predicted and measured dimensions. However, significant differences were found between the state of strain predicted by the model and the measure state of strain in the x-direction in the panels.
520 $a The tensile behavior of the wood-bicomponent fiber composite under simulated long term load was studied. Short term creep tests were conducted at different temperatures and were shifted to a reference temperature to simulate long term creep tests. It was found that the shift factor used followed the WLF equation. Creep tests were conducted on bicomponent fiber sheets, MDF and the composite itself. It was observed that MDF creeped the least, with the greatest creep observed in the bicomponent fiber sheets. The wood-bicomponent fiber panel exhibited an intermediate creep.
590 $a School code: 0155.
650 4 $a Agriculture, Wood Technology. $3 1031154
650 4 $a Textile Technology. $3 1020710
690 $a 0746
690 $a 0994
710 2 $a North Carolina State University. $3 1018772
773 0 $t Dissertation Abstracts International $g 69-09B.
790 $a 0155
790 1 0 $a Peralta, Perry, $e advisor
790 1 0 $a Peszlen, Ilona, $e advisor
791 $a Ph.D.
792 $a 2008
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3329355