Results 21 to 30 of about 2,801 (177)

Preparation of Shellac Resin Microcapsules Coated with Urea Formaldehyde Resin and Properties of Waterborne Paint Films for Tilia amurensis Rupr.

Membranes, 2020
A two-step in situ polymerization method was utilized to fabricate urea formaldehyde (UF) resin-coated shellac resin microcapsules. The morphology and composition of microcapsules with different core-wall ratios were analyzed by scanning electron ...
Xiaoxing Yan, Lin Wang
doaj   +1 more source

Hyperbranched Poly(amidoamine)s as Additives for Urea Formaldehyde Resin and Their Application in Particleboard Fabrication

BioResources, 2014
Three types of hyperbranched poly(amidoamine)s (PAMAMs), namely HB(MA-EDA)1, HB(MA-EDA)3, and HB(MA-DETA)1.2, were synthesized and used as modifiers for urea-formaldehyde (UF) resin. Particleboards bonded with these modified UF resins were fabricated and
Jizhi Zhang, Siham Amirou, Hisham A. Essawy, Antonio Pizzi, Qiang Gao, Jianzhang Li   +5 more
doaj   +1 more source

Modified plywood binder preparation process: The effect of urea formaldehyde mole ratio [PDF]

E3S Web of Conferences
The paper highlights the importance of reducing formaldehyde emissions in plywood products due to increasing public health awareness. Lowering the formaldehyde to urea mole ratio (F/U) during UF resin preparation is a crucial step in achieving this goal.
Dermawan Dicky, Pertiwi Dyah Setyo, Siddik Trio Muhammad   +2 more
doaj   +1 more source

Reinforcement of urea formaldehyde resins with pectins derived from orange peel residues for the production of wood-based panels

Sustainable Chemistry for the Environment, 2023
Pectin is a high molecular weight carbohydrate polymer that can be utilized in various applications in many sectors. The current study involved extracting pectin samples from orange peel residues and utilizing them as additives in water-based adhesive ...
Dimitrios Moutousidis, Konstantina Karidi, Eleftheria Athanassiadou, Eleni Stylianou, Nikos Giannakis, Apostolis Koutinas   +5 more
doaj   +1 more source

The influence of urea formaldehyde resins on pyrolysis characteristics and products of wood-based panels [PDF]

BioResources, 2012
In China each year, large amounts of wood-based panels are consumed and abandoned. These are huge resources for energy recovery and materials reuse. In order to study the influence of urea formaldehyde resin (UF) resin on waste wood-based panels during ...
Yongshun Feng, Jun Mu, Shihua Chen, Zhiyi Huang, Zhiming Yu   +4 more
doaj  

Improving Thermal Conductivity Coefficient in Oriented Strand Lumber (OSL) Using Sepiolite

Nanomaterials, 2020
An issue in engineered wood products, like oriented strand lumber (OSL), is the low thermal conductivity coefficient of raw material, preventing the fast transfer of heat into the core of composite mats. The aim of this paper is to investigate the effect
Hamid R. Taghiyari, Abolfazl Soltani, Ayoub Esmailpour, Vahid Hassani, Hamed Gholipour, Antonios N. Papadopoulos   +5 more
doaj   +1 more source

USING QUERCUS INFECTORIA GALL NUT TANNIN AS A BINDER INPARTICLEBOARDS PRODUCTION [PDF]

Mesopotamia Journal of Agriculture, 2006
Adhesives derived from oak (Quercus infectoria) galls tannin and urea-formaldehyde were used to produce particleboards of 18 mm. thickness from pinewood particles at 8 and 12% resin content and target density of 0.60 gm / cm3.
Walid A. Kasir
doaj   +1 more source

SHORT NOTES: THE TEA LEAVES AS A FILLER FOR UF RESIN PLYWOOD PRODUCTION

Wood Research, 2023
The addition of green tea leaves fractions < 0.315 mm as afiller to urea-formaldehyde resin to reduction of emission of formaldehyde from three-layer birch plywood was investigated. Moreover, other properties such as bonding quality and water resistance of plywood were investigated.
JOANNA WALKIEWICZ, JAKUB KAWALERCZYK, RADOSŁAW MIRSKI, ZUZANNA SZUBERT   +3 more
openaire   +1 more source

Some advantages of three-layer medium-density fibreboard as compared to the traditional single-layer one

Journal of Wood Science, 2019
The aim of the study was to develop three-layer medium-density fibreboard (MDF) manufacture by adding the coarse fibres in the middle layer, like three-layer particleboard.
Turgay Akbulut, Nadir Ayrilmis
doaj   +1 more source

Ternary Crosslinking Builds Nanosheet Hard Carbon and Interfacial Polarization Regulates Na⁺ Kinetics in Hard Carbon Anodes

Carbon Energy, EarlyView.
Nanosheet Hard Carbon for Fast Na+ Storage ABSTRACT Hard‐carbon anodes for sodium‐ion batteries are often constrained by low initial Coulombic efficiency, severe interfacial polarization, and sluggish Na⁺ kinetics, especially when porosity engineering amplifies electrolyte consumption.
Dongke Cai, Fan Liu, Shuai Jiang, Shuwen Zhang, Bing Li, Qian Zhao   +5 more
wiley   +1 more source