Calcium carbonate modified urea–formaldehyde resin adhesive for strength enhanced medium density fiberboard production
Lu Li, Yan Wang, Tianhua Li, Supeng Wang, Shoulu Yang, Yan Qing, Xingong Li, Yiqiang Wu, Ming Liu
Abstract
Reactions between CaCO<sub>3</sub> and CH<sub>2</sub>O<sub>2</sub> during polycondensation of UF resin produce Ca<sup>2+</sup>. Ionic bond complexation binds Ca<sup>2+</sup> with UF resin. The UF resin crystalline percentage decreases from 26.86% to 22.71%. IB strength of resin bonded fiberboard increases from 0.75 to 0.94 MPa.
Topics & Concepts
Urea-formaldehydeAdhesiveFormaldehydeMaterials scienceFiberboardCalcium carbonateSynthetic resinUreaComposite materialChemical engineeringChemistryOrganic chemistryEngineeringLayer (electronics)Lignin and Wood ChemistryNatural Fiber Reinforced CompositesWood Treatment and Properties