Effects of Radio Frequency and Heat on Wood Bonding with a Poly(vinyl acetate) Dispersion Adhesive (Articolo in rivista)

Type
Label
  • Effects of Radio Frequency and Heat on Wood Bonding with a Poly(vinyl acetate) Dispersion Adhesive (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1002/app.38805 (literal)
Alternative label
  • Chiozza F., Toniolo F., Pizzo B. (2013)
    Effects of Radio Frequency and Heat on Wood Bonding with a Poly(vinyl acetate) Dispersion Adhesive
    in Journal of applied polymer science (Online)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Chiozza F., Toniolo F., Pizzo B. (literal)
Pagina inizio
  • 1157 (literal)
Pagina fine
  • 1169 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 129 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 3 (literal)
Note
  • Scopus (literal)
  • ISI Web of Science (WOS) (literal)
  • Google Scholar (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • VINAVIL SpA - RandD, Villadossola, Italy; CNR-IVALSA, Istituto per la Valorizzazione Del Legno e Delle Specie Arboree, Sesto Fiorentino (FI), Italy. (literal)
Titolo
  • Effects of Radio Frequency and Heat on Wood Bonding with a Poly(vinyl acetate) Dispersion Adhesive (literal)
Abstract
  • Water-based poly(vinyl acetate) dispersions are widely used as wood adhesives with dielectric heating systems. However, little is known about the effects of radio frequency (RF) exposure or heat on the adhesive characteristics and on the performances of bonded joints. In this study, the properties of bonded joints exposed to RF were compared with hot pressing and with standard drying, and the observed behavior was explained. Joint characteristics were evaluated by means of both conventional (e.g., shear strength in both dry and wet conditions, etc.) and unconventional (e.g., bondline temperature, moisture content at interface, etc.) procedures, and also selected properties of polymeric film were measured (e.g., water absorption, analysis of the fraction dissolved in water, glass transition temperature [Tg], etc.) to explicate the observed differences. Results evidenced that the effect of both RF and heating was to appreciably speed up the drying process. However, when high values of energetic impulse (owing to both hot pressing and RF) were given to the assemblies, permanent changes were induced into the polymeric glueline. This occurrence was a time-driven process and reflected mainly on the mechanical performance in wet conditions, which improved appreciably in comparison to the standard reference series. The reason of such behavior was connected to the poly(vinyl alcohol) phase present inside the polymer, and a role was also assigned to AlCl3, used as complexing agent of the polymeric protective colloid. (literal)
Prodotto di
Autore CNR
Insieme di parole chiave

Incoming links:


Autore CNR di
Prodotto
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
Insieme di parole chiave di
data.CNR.it