Activation of wood surfaces for glue bonds by mechanical pre-treatment and its effects on some properties of veneer surfaces and plywood panels

Aydın, İsmail

doi:10.1016/j.apsusc.2004.03.230

Cited by 93 publications

(47 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This relationship indicates that contact angle could be an indicator for the degree of adhesive bond strength of MDF. 4. We suggest that MDF manufactures use modified glues, paints, or varnishes adapted to these inactivated MDF surfaces to prevent in-service adhesion problems.…”

Section: Discussionmentioning

confidence: 99%

“…Inactivation flooring, overlaid panels for furniture and cabinet industry. of wood surfaces, which results in poor bond quality, When the panels are used as substrate for thin overlays is a time-dependent process accelerated by increasing their surface characteristics in terms of roughness play temperature [4]. An inactivated wood surface can cause an important role in determining quality of final product.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of Post Heat-Treatment on Surface Characteristics and Adhesive Bonding Performance of Medium Density Fiberboard

Ayrılmış

Winandy

2009

Mat. & Manufacturing Processes

View full text Add to dashboard Cite

A series of commercially manufactured medium density fiberboard (MDF) panels were exposed to a post-manufacture heat-treatment at various temperatures and durations using a hot press and just enough pressure to ensure firm contact between the panel and the press platens. Postmanufacture heat-treatment improved surface roughness of the exterior MDF panels. Panels treated at 225 � C for 30 min had the smoothest surface while the roughest surface was found for the control panels. Wettability and the adhesive bonding strength between veneer sheet and panel surface were decreased as post-treatment press temperature increased. A significant relationship (R 2 = 0 92) existed between contact angles and adhesive bond strength.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of Post Heat-Treatment on Surface Characteristics and Adhesive Bonding Performance of Medium Density Fiberboard

Ayrılmış

Winandy

2009

Mat. & Manufacturing Processes

View full text Add to dashboard Cite

show abstract

“…The layer of adhesive must be uniform thickness for high bonding quality. Aydın (2004) showed that the increase of surface roughness induces the increase of bonding quality. In another study, it was determined that the surface roughness of eucalyptus (Eucalyptus camaldulensis) was greater than that of beech (Fagus orientalis) ).…”

Section: Universidad Del Bío -Bíomentioning

confidence: 99%

Some mechanical properties of plywood produced from eucalyptus, beech, and poplar veneer

Bal

Bektaş²

2014

Maderas, Cienc. tecnol.

View full text Add to dashboard Cite

In this study, we determined the flexural properties and tensile shear strength of five-ply plywood panels produced with eucalyptus (Eucalyptus grandis), beech (Fagus orientalis), and hybrid poplar (Populus x euramericana) using urea-formaldehyde (UF), melamine-urea-formaldehyde (MUF) and phenol-formaldehyde (PF) adhesives. Flexural properties were tested on both parallel and perpendicular to grain samples. Tensile shear-strength tests were conducted on four glue lines of the plywood panels, and the effects of species of trees, type of adhesives, and direction of load were determined. The results of variance analyses showed that the effects of species of trees, direction of load, and type of adhesive on flexural properties were significant, but it was determined by specific flexural properties that the effect of the type of adhesive was based on the density of the plywood. In addition, as a result of findings, it can be said that specific mechanical properties may be a good predictor for comparative studies.

show abstract

“…Contact angle analysis is widely used to determine the wettability of solid materials (Walinder and Ström 2001;Aydin 2004). To determine wetting characteristics of modified particles, the contact angle of the water and particle surface was measured using a DSA 30E goniometer (Krüss GmbH, Hamburg, Germany).…”

Section: Contact Anglementioning

confidence: 99%

Chemical and Physical Parameters of Different Modifications of Rape Straw (Brassica napus L.)

et al. 2017

View full text Add to dashboard Cite

Material alternatives to wood, such as rape straw, are needed for the production of composite materials. This study performed an analysis of rape straw as a composite material source for production. There were three types of rape straw particle modification: untreated particles as reference variant, boiling in water, and soaking in sodium hydroxide (NaOH) solution. The pH and calorific value were highest for the variant soaked in NaOH. The total elemental content and the elements on the rape straw surface varied between variants. The modification method chosen influenced the pH, calorific value, elemental composition, and contact angle. Keywords INTRODUCTIONRecently there has been an effort to develop new composite materials using alternative sources of raw materials. This trend is largely explained by population growth, which contributes directly to a limited supply of natural resources, as well as wood shortage in all wood processing industries (Galor and Weil 2000;Bektas et al. 2005;Seintsch 2011;Lauri et al. 2012). One alternative source of raw materials is post-harvest rapeseed crop residue (Mohanty et al. 2002;Dziurka et al. 2015). As a prospective raw material, rapeseed has many advantages, as it is available in large quantities and is not yet used in other products with high added value (Bečka et al. 2007;Dukarska et al. 2017). However, waxy and siliceous substances are present on the surface of winter rape stems, which prevents the formation of quality adhesion between particle and adhesive (Grigoriou 2000). This is the main disadvantage of particles from annual plants compared to wood particles. The chemical composition differs between internal and external areas of the stem because of cuticles and epicuticular waxes (Wiśniewska et al. 2003;Trischler, and Sandberg 2014). The surface has a strong impact on the water contact angle, which deteriorates the wetting of particles by adhesives, since adhesives used in particleboard production are mainly water-based (Wiśniewska et al. 2003). Therefore, it is necessary to pre-treat these particles from annual plants before the production of the composite material itself (Mahlberg et al. 1999;Cao et al. 2017). This modification can PEER-REVIEWED ARTICLE bioresources.com Částková et al. (2018). "Modified rape straw," BioResources 13(1), 104-114. 105 be done in various ways (Pelaez-Samaniego et al. 2013;Trischler and Sandberg 2014). Boiling in water is regarded favorably as a treatment due to its ease of implementation (Bekhta et al. 2013). An alternative is alkaline treatment, which breaks ester linkages between wax and lignocellulose, as well as dissolving wax and lignin (Binod et al. 2010;Wan et al. 2011). In this study, winter rape chips were modified by applying hydrothermal and chemical (soaking in sodium hydroxide) processes (Xie et al. 2010;Bekhta et al. 2013). It is assumed that the modification destroys the waxy, siliceous substances on the surface of the chips and consequently improves adhesion in the composite product. This study characterized the phys...

show abstract

Activation of wood surfaces for glue bonds by mechanical pre-treatment and its effects on some properties of veneer surfaces and plywood panels

Cited by 93 publications

References 8 publications

Effects of Post Heat-Treatment on Surface Characteristics and Adhesive Bonding Performance of Medium Density Fiberboard

Effects of Post Heat-Treatment on Surface Characteristics and Adhesive Bonding Performance of Medium Density Fiberboard

Some mechanical properties of plywood produced from eucalyptus, beech, and poplar veneer

Chemical and Physical Parameters of Different Modifications of Rape Straw (Brassica napus L.)

Contact Info

Product

Resources

About