Assessing the Tensile Shear Strength and Interfacial Bonding Mechanism of Poplar Plywood with High-density Polyethylene Films as Adhesive
A series of high-density polyethylene (HDPE) films were tested as adhesives for plywood and were fabricated using hot pressing followed by cold pressing. The effects of the moisture content, HDPE dosage, and the hot-press temperature and pressure on the mechanical properties were evaluated by analyz...
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| Format: | Article |
| Language: | English |
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North Carolina State University
2016-11-01
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| Series: | BioResources |
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| Online Access: | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_12_1_571_Chang_Tensile_Shear_Strength_Interfacial |
| _version_ | 1831746340486381568 |
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| author | Liang Chang Wenjing Guo Qiheng Tang |
| author_facet | Liang Chang Wenjing Guo Qiheng Tang |
| author_sort | Liang Chang |
| collection | DOAJ |
| description | A series of high-density polyethylene (HDPE) films were tested as adhesives for plywood and were fabricated using hot pressing followed by cold pressing. The effects of the moisture content, HDPE dosage, and the hot-press temperature and pressure on the mechanical properties were evaluated by analyzing the tensile shear strength. The results indicated that the HDPE films that were used as adhesives in plywood had good bonding strength, meeting the requirements for type II-grade plywood according to the GB/T 9846.3 standard (2004, Beijing, China). The bonding mechanism was also investigated using the width of the bond line, the average penetration (AP), and the effective penetration (EP) through the use of optical microscopy and scanning electron microscopy (SEM). The results showed that the HDPE is able to penetrate into the vessels, xylem, and so on. On the whole, both the AP and EP increased with an increase in the HDPE dosage and hot-press temperature and pressure, but not with an increase in the moisture content. In addition, the effects of the factors mentioned above on the width of the bond line, AP, and EP were also investigated by an ANOVA analysis. |
| first_indexed | 2024-12-21T21:12:22Z |
| format | Article |
| id | doaj.art-2b11a5935b7b4f91a1058dc12905e961 |
| institution | Directory Open Access Journal |
| issn | 1930-2126 1930-2126 |
| language | English |
| last_indexed | 2024-12-21T21:12:22Z |
| publishDate | 2016-11-01 |
| publisher | North Carolina State University |
| record_format | Article |
| series | BioResources |
| spelling | doaj.art-2b11a5935b7b4f91a1058dc12905e9612022-12-21T18:50:05ZengNorth Carolina State UniversityBioResources1930-21261930-21262016-11-0112157158510.15376/biores.12.1.571-585Assessing the Tensile Shear Strength and Interfacial Bonding Mechanism of Poplar Plywood with High-density Polyethylene Films as AdhesiveLiang Chang0Wenjing Guo1Qiheng Tang2Research Institute of Wood Industry, Chinese Academy of Forestry, No 1 Dongxiaofu, Haidian District, Beijing 100091, PR China; ChinaResearch Institute of Wood Industry, Chinese Academy of Forestry, No 1 Dongxiaofu, Haidian District, Beijing 100091, PR China; ChinaResearch Institute of Wood Industry, Chinese Academy of Forestry, No 1 Dongxiaofu, Haidian District, Beijing 100091, PR China; ChinaA series of high-density polyethylene (HDPE) films were tested as adhesives for plywood and were fabricated using hot pressing followed by cold pressing. The effects of the moisture content, HDPE dosage, and the hot-press temperature and pressure on the mechanical properties were evaluated by analyzing the tensile shear strength. The results indicated that the HDPE films that were used as adhesives in plywood had good bonding strength, meeting the requirements for type II-grade plywood according to the GB/T 9846.3 standard (2004, Beijing, China). The bonding mechanism was also investigated using the width of the bond line, the average penetration (AP), and the effective penetration (EP) through the use of optical microscopy and scanning electron microscopy (SEM). The results showed that the HDPE is able to penetrate into the vessels, xylem, and so on. On the whole, both the AP and EP increased with an increase in the HDPE dosage and hot-press temperature and pressure, but not with an increase in the moisture content. In addition, the effects of the factors mentioned above on the width of the bond line, AP, and EP were also investigated by an ANOVA analysis.http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_12_1_571_Chang_Tensile_Shear_Strength_InterfacialPlywood; HDPE films; Tensile shear strength; Microscope; Mechanism; Optical microscopy; Scanning electron microscopy (SEM) |
| spellingShingle | Liang Chang Wenjing Guo Qiheng Tang Assessing the Tensile Shear Strength and Interfacial Bonding Mechanism of Poplar Plywood with High-density Polyethylene Films as Adhesive BioResources Plywood; HDPE films; Tensile shear strength; Microscope; Mechanism; Optical microscopy; Scanning electron microscopy (SEM) |
| title | Assessing the Tensile Shear Strength and Interfacial Bonding Mechanism of Poplar Plywood with High-density Polyethylene Films as Adhesive |
| title_full | Assessing the Tensile Shear Strength and Interfacial Bonding Mechanism of Poplar Plywood with High-density Polyethylene Films as Adhesive |
| title_fullStr | Assessing the Tensile Shear Strength and Interfacial Bonding Mechanism of Poplar Plywood with High-density Polyethylene Films as Adhesive |
| title_full_unstemmed | Assessing the Tensile Shear Strength and Interfacial Bonding Mechanism of Poplar Plywood with High-density Polyethylene Films as Adhesive |
| title_short | Assessing the Tensile Shear Strength and Interfacial Bonding Mechanism of Poplar Plywood with High-density Polyethylene Films as Adhesive |
| title_sort | assessing the tensile shear strength and interfacial bonding mechanism of poplar plywood with high density polyethylene films as adhesive |
| topic | Plywood; HDPE films; Tensile shear strength; Microscope; Mechanism; Optical microscopy; Scanning electron microscopy (SEM) |
| url | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_12_1_571_Chang_Tensile_Shear_Strength_Interfacial |
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