Combined Surface Treatment of Polyethylene Wood-plastic Composites to Achieve Rapid Bonding with Desired Adhesion Properties

Hou, Yuhan; Yan, Shuang; Guo, Xiao Fei; Di, Mingwei

doi:10.15376/biores.12.3.6434-6445

Cited by 5 publications

(3 citation statements)

References 16 publications

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“…The choice of HDPE as a focus area is justified not only by its very widespread use as an unmodified polymer material, but also because of the large number of studies that have been conducted involving cellulose-based reinforcements. HDPE also presents a specific challenge that is of great interest to researchers: The low surface energy of HDPE surfaces tend to bond poorly to unmodified cellulosic surfaces (Hou et al 2017;Sakakibara et al 2017;Gao et al 2019), so that a majority of related published research includes evaluating effects of compatibilizing treatments. Another characteristic of interest is HDPE's moderately flexible nature.…”

Section: Part A: Studies Dealing With a Selected Common Polymer Matrix Selection Of A Common Plastic Matrix Materials For Data Miningmentioning

confidence: 99%

From nanocellulose to wood particles: A review of particle size vs. the properties of plastic composites reinforced with cellulose-based entities

Hubbe¹,

Grigsby²

2020

BioRes

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This review article considers published evidence regarding effects of particle size on mechanical properties of plastic matrix materials filled with cellulose-based reinforcements. Cellulosic or wood-based reinforcements in plastic matrices can contribute to higher modulus, lower density, and less tendency to sag in comparison with the matrix phase by itself, while still allowing the resulting material to be cut or milled. Although cellulosic materials are generally too hydrophilic to adhere well to common thermoplastic materials such as polyethylene, such deficiencies can be overcome by use of compatibilizers, e.g. polyethylene-maleic anhydride. Recently many researchers have evaluated nanocellulose in plastic composites. The higher surface areas of nanocellulose generally imply a higher cost of compatibilizer to achieve good interfacial adhesion. This review first examines results of a large number of studies all involving highdensity polyethylene as the matrix. Then, to get a more detailed mechanistic view, studies are considered that compare different particle sizes of cellulose-based reinforcements within the same conditions of preparation of composites prepared with various matrix polymers. To summarize the findings, there does not appear to be any consistent and dependable advantage of using nano-sized cellulosic reinforcements when trying to achieve higher values of composite strength or modulus.

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Section: Part A: Studies Dealing With a Selected Common Polymer Matrix Selection Of A Common Plastic Matrix Materials For Data Miningmentioning

confidence: 99%

From nanocellulose to wood particles: A review of particle size vs. the properties of plastic composites reinforced with cellulose-based entities

Hubbe¹,

Grigsby²

2020

BioRes

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“…On the other hand, mechanical abrasion is one of the methods used to improve the surface activity of WPCs. This process increases the roughness and hydroxyl and wood content of the surface [16]. Indeed, the mechanical treatment effectively removes the surface layers and exposes the wood to the surface layer.…”

Section: Introductionmentioning

confidence: 99%

Effects of Chromic Treatment on the Surface Properties of Polypropylene (PP) Wood Composites

et al. 2021

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The moisture sensitivity of wood–polymer composites (WPCs) is mainly related to their hydrophilic wood components. Coatings are among the alternatives that improve the dimensional stability of these composites. However, the adhesion of most coatings to the WPC surface is generally poor. Thus, chemical and/or mechanical treatments should be applied to the WPC surface to improve the coating adhesion. Therefore, the main objective of this study was to improve the adhesion coating of polypropylene (PP) WPCs through a chromic treatment. PP was reinforced by three different pulp fibers (kraft, thermomechanical (TMP), and chemothermomechanical (CTMP)) at three fiber contents (50, 60, and 70% w/w). A chromic treatment was applied to the PP-based WPCs to activate the surface of the composites and alter their roughness parameters, creating a higher interfacial zone that improved the bonding of the epoxy coating to the surface of the PP composites. The chromic treatment increased the roughness of the surface. An increase in profile and surface parameters was observed after treatment. This treatment modified the chemical composition of the surface by creating polar carbon–oxygen groups and increasing the carbonyl and hydroxyl indexes.

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“…Previous studies have demonstrated that seamless connections of WP/PE can only be achieved after surface treatment (Moghadamzadeh et al 2011;Moritzer and Hopp 2017). Especially, the combined surface treatment of sanding then coating with a silane coupling agent followed by plasma discharge for WP/PE composites, was utilized to obtain a fast treatment method and a satisfactory bonding performance (Liu et al 2010;Hou et al 2017;Yáñezpacios and Martínmartínez 2017).…”

Section: Introductionmentioning

confidence: 99%

Finite element analysis of strap lap bonding joints for wood powder/polyethylene composites with combined surface treatment

Zhou

2020

BioRes

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A design for strap lap bond joints of wood powder/polyethylene composites (WP/PE) was proposed. The effects of combined treatment on surface properties of WP/PE and failure modes of WP/PE bonded by epoxy and acrylic ester were investigated. A finite element model of strap lap bond joints of WP/PE was established based on the elastoplasticity finite element method, and the effects of lap length and adhesive (epoxy and acrylic ester) on stress distributions and comprehensive displacements of strap lap bond joints of WP/PE were investigated. The results demonstrated that the bonding interface roughness of WP/PE was enhanced by the combined surface treatment. Active oxygen-containing functional groups were introduced to the sample surface. The finite element simulation results revealed that the Mises equivalent stress peaks and comprehensive displacements of strap lap bond joints were concentrated in lap zone ends and board connections, the stress distribution was independent of the lap length, and the Mises equivalent stress peaks and comprehensive displacements were independent of the adhesive.

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Combined Surface Treatment of Polyethylene Wood-plastic Composites to Achieve Rapid Bonding with Desired Adhesion Properties

Cited by 5 publications

References 16 publications

From nanocellulose to wood particles: A review of particle size vs. the properties of plastic composites reinforced with cellulose-based entities

From nanocellulose to wood particles: A review of particle size vs. the properties of plastic composites reinforced with cellulose-based entities

Effects of Chromic Treatment on the Surface Properties of Polypropylene (PP) Wood Composites

Finite element analysis of strap lap bonding joints for wood powder/polyethylene composites with combined surface treatment

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