Effect of PVC film pretreatment on performance and lamination of wood-plastic composite plywood

Li, Zhihui; Qi, Xinglai; Gao, Yanlong; Zhou, Yonghui; Chen, Nairong; Zeng, Qinzhi; Fan, Mizi; Rao, Jiuping

doi:10.1039/c9ra02848j

Cited by 7 publications

(7 citation statements)

References 27 publications

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“…The result showed that the hot-press time affects the penetration depth of the thermoplastic film. Overpenetration may occur if the hot-press time is too long, which will have a negative impact on the bonding strength of the thermoplastic plywood [22].…”

Section: Dosage Of the Eva Filmmentioning

confidence: 99%

“…Therefore, accurate control of the secondary press process is a key factor for maintaining the stability of the mechanical mesh structure of the interface layer and the mechanical properties of the panel. A literature search showed that most researchers have systematically studied the hot-press process of thermoplastic plywood [17,22,29,43], but there is no in-depth discussion on the secondary press process. Based on the hot-press process, the effect of the secondary press process on the tensile shear strength of EVA wood-plastic plywood was studied.…”

Section: Effect Of the Secondary Press Process On The Performance Of ...mentioning

confidence: 99%

“…However, owing to the high melting temperature of the PP film, the temperature of the PP thermoplastic plywood should not be lower than 180 • C. In the manufacturing process of thermoplastic resin plywood, the heat transfer rate and uniformity can directly affect the plywood performance. Li et al [22] not only increased the mechanical interlocking between the plastic and wood but also significantly reduced the hot-press time of the plywood through the perforation of the PVC film and then bonding with the wood veneer. Ye et al [23] used mechanical methods to punch holes in the wood veneer surface and then combined it with the PE film.…”

Section: Introductionmentioning

confidence: 99%

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Fabrication and Characterization of EVA Resins as Adhesives in Plywood

Zhang

et al. 2023

Polymers

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The practical problem of free formaldehyde pollution in the plywood industry is that polyethylene films have been shown to be able to replace some urea–formaldehyde resins for wood adhesives. To broaden the variety of thermoplastic plywood, reduce the hot-press temperature, and save energy consumption, an ethylene–vinyl acetate (EVA) film was selected as a wood adhesive to manufacture a novel wood–plastic composite plywood via hot-press and secondary press processes. The effects of the hot-press and secondary press processes at different levels on the physical–mechanical properties of EVA plywood (tensile shear strength, 24 h water absorption, and immersion peel performance) were evaluated. The results showed that the properties of the resulting plywood using the EVA film as an adhesive could meet the type III plywood standard. The optimum hot-press time was 1 min/mm, the hot-press temperature was 110–120 °C, the hot-press pressure was 1 MPa, the dosage film was 163 g/m2, the secondary press time was 5 min, the secondary press pressure was 0.5 MPa, and the secondary press temperature was 25 °C. EVA plywood can be used in indoor environments.

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Section: Dosage Of the Eva Filmmentioning

confidence: 99%

Section: Effect Of the Secondary Press Process On The Performance Of ...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fabrication and Characterization of EVA Resins as Adhesives in Plywood

Zhang

et al. 2023

Polymers

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“…This method helped to form a more stable “dendritic glue nail” microstructure and contributed to improving the bonding strength and dimensional stability of the PE film-bonded wood-based panel. The perforation of the thermoplastic film was also conducive to increasing the mechanical interlocking between the plastic and wood [ 87 ]. This is because the heat transfer rate was accelerated during the hot pressing.…”

Section: Technical Problems Of Wood-based Panel Made Of Thermoplastic Resin Adhesivementioning

confidence: 99%

Research Progress of Wood-Based Panels Made of Thermoplastics as Wood Adhesives

Zhang

Fang

2021

Polymers

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When thermoplastic resins such as polyethylene (PE) and polypropylene (PP) are selected as wood adhesives to bond wood particles (fibers, chips, veneers) by using the hot-pressing technique, the formaldehyde emission issue that has long existed in the wood-based panel industry can be effectively solved. In this study, in general, thermoplastic-bonded wood-based panels presented relatively higher mechanical properties and better water resistance and machinability than the conventional urea–formaldehyde resin-bonded wood-based panels. However, the bonding structure of the wood and thermoplastic materials was unstable at high temperatures. Compared with the wood–plastic composites manufactured by the extruding or injection molding methods, thermoplastic-bonded wood-based panels have the advantages of larger size, a wider raw material range and higher production efficiency. The processing technology, bonding mechanism and the performance of thermoplastic-bonded wood-based panels are comprehensively summarized and reviewed in this paper. Meanwhile, the existing problems of this new kind of panel and their future development trends are also highlighted, which can provide the wood industry with foundations and guidelines for using thermoplastics as environmentally friendly adhesives and effectively solving indoor pollution problems.

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“…They considered the properties and possible applications of the WPCs prepared using this method in packaging. Li et al (2019) studied the influence of PVC film perforation pretreatment on the physical and mechanical properties of, and the lamination effect exhibited by, a new WPC to explore and solve the heat transfer problem in the hot-pressing process.…”

Section: Introductionmentioning

confidence: 99%

Chip morphology’s effect on properties of PLA-based bamboo–plastic composites produced using hot-pressing

Qiu,

Yang,

Zhang

et al. 2024

BioRes

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This study explored the effect of raw material morphology on the properties of bamboo–plastic composites produced using hot-pressing. To provide a reference for reducing the production cost and improve the product properties of the composites, polylactic acid (PLA)-based bamboo–plastic composites were prepared using bamboo chips with a shaved morphology (BS) and fiber morphology (BF) and PLA as the matrix material, via hot-pressing. The properties of the bamboo–plastic composites formed with BS and BF chips were studied and compared with those of composites with conventional granular morphology (BM) and powder morphology (BP). The results showed that when the content of the bamboo chips was at 50% (the same below), the mechanical properties of the BF/PLA composites were remarkably better than those of the other PLA-based composites. However, the BF/PLA composites showed a high degree of hydrophilicity, with a water contact angle of 70.0° and a water absorption of 10.8% at 288 h. More holes could be seen in the BF/PLA composites using a scanning electron microscope. Among the four types of PLA-based composites, better melt fluidity was found only in the BF/PLA composites, and the melting index was 65.3 g/min.

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Effect of PVC film pretreatment on performance and lamination of wood-plastic composite plywood

Abstract: This paper investigates the perforation treatment of polyvinylchloride (PVC) plastic films and their plywood composites.

Cited by 7 publications

References 27 publications

Fabrication and Characterization of EVA Resins as Adhesives in Plywood

Fabrication and Characterization of EVA Resins as Adhesives in Plywood

Research Progress of Wood-Based Panels Made of Thermoplastics as Wood Adhesives

Chip morphology’s effect on properties of PLA-based bamboo–plastic composites produced using hot-pressing

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