Materiales
Materiales
Hydrolytic and thermal stability of urea?formaldehyde resins based on tannin and betaine bio?fillers
07/06/2023 -
In this work, betaine (trimethyl glycine) and tannin (complex biomolecules of polyphenolic nature) were used as bio?fillers. Urea?formaldehyde (UF) resin with a molar ratio of formaldehyde versus...
Ureido Hyperbranched Polymer Modified Urea-Formaldehyde Resin as High-Performance Particleboard Adhesive
27/05/2023 -
The performance of urea-formaldehyde (UF) resin and its formaldehyde emission is a natural contradiction. High molar ratio UF resin performance is very good, but its formaldehyde release is high; low...
The comparative study of biocomposites based on hydrochar and chitosan?modified urea?formaldehyde resins
22/05/2023 -
Two biocomposites based on hydrochar and chitosan?modified urea?formaldehyde (UF) resin, namely HCUF and CHUF, were in situ synthesized using the same procedure with a 0.8?molar ratio of the...
Urea?glutaraldehyde?formaldehyde resin with low formaldehyde emission and high flexibility: Structure and toughening mechanism
30/12/2022 -
Glutaraldehyde was introduced into the synthesis system of urea?formaldehyde (UF) resin and urea?glutaraldehyde?formaldehyde (UGF) copolycondensation resin with combined properties of high...
Technological properties of a branched polyethyleneimine derivative as a cross-linker for low molar ratio urea-formaldehyde resins
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To address formaldehyde release problem, low-molar-ratio UF resin has become the industry's major adhesive for bonding wood-based panels. Unfortunately, its drawbacks of poor water...
An Improved Optimization Model to Predict the MOR of Glulam Prepared by UF-Oxidized Starch Adhesive: A Hybrid Artificial Neural Network-Modified Genetic Algorithm Optimization Approach
19/12/2022 -
The purpose of the present article is to study the bending strength of glulam prepared by plane tree (Platanus Orientalis-L) wood layers adhered by UF resin with different formaldehyde to urea molar...
Application of Nano-SiO2 Reinforced Urea-Formaldehyde Resin and Molecular Dynamics Simulation Study
07/12/2022 -
Nano-SiO2 is a typical modifier used for urea-formaldehyde (UF) resins to balance the reduced formaldehyde content and maintain bond strength. However, the microstructure of UF resin and the...
Oxidative stabilization of pitch?polyacrylonitrile composite nanofibers electrospun by incorporating high?percentage inexpensive pitch
16/11/2022 -
AbstractBased on the difference in the reaction rate of different groups of urea?formaldehyde resins and isocyanate resins, this study designed two different urea?formaldehyde resins: a normal...
Double-Layered Polymer Microcapsule Containing Non-Flammable Agent for Initial Fire Suppression
06/11/2022 -
Fire in energy storage systems, such as lithium-ion batteries, has been raised as a serious concern due to the difficulty of suppressing it. Fluorine-based non-flammable agents used as internal...
The Application of Various Bark Species as a Fillers for UF Resin in Plywood Manufacturing
15/10/2022 -
The aim of the presented study was to apply various bark species (birch, beech, maple, pine and spruce) as fillers for urea-formaldehyde (UF) resin in three-layer plywood manufacturing. For this...
Effects of Wood Particles from Deadwood on the Properties and Formaldehyde Emission of Particleboards
28/08/2022 -
The volume of deadwood increases annually because of changes in environmental, climatic, and hydrological conditions. On the other hand, during the last decade, manufacturers of wood-based boards...
Tung Oil Microcapsules Prepared with Different Emulsifiers and Their Effects on the Properties of Coating Film
12/08/2022 -
In water-based coatings, the addition of tung oil microcapsules coated with urea formaldehyde resin (UF) can effectively repair the microcracks in the coating film on the surface of wood. The tung...
Study on Construction and Reinforcement Technology of Dolomite Sanding Tunnel
27/07/2022 -
The No. 2 conduit of the Xiaopu Tunnel in the Yuxi section of central Yunnan’s water diversion project is taken as the research object, starting from the geological conditions along...
Biodegradable Films Prepared from Pulp Lignocellulose Adhesives of Urea Formaldehyde Resin Modified by Biosulfonate
14/07/2022 -
Traditional low-density polyethylene (LDPE) film causes environmental pollution; there is a pressing need to make new bio-based polymers for alternative products, to meet agricultural production...
Effects of Thermochromic Fluorane Microcapsules and Self-Repairing Waterborne Acrylic Microcapsules on the Properties of Water-Based Coatings on Basswood Surface
19/06/2022 -
The effect of the addition of fluorane microcapsules and urea formaldehyde resin (UF) waterborne acrylic resin microcapsules on the comprehensive properties of the water film on the surface of...
Derivative thermogravimetric analysis curve for characterizing the curing process of urea-formaldehyde resins
01/09/2022 -
The curing process of urea-formaldehyde (UF) resin affects the performance of cured UF resin. To characterize the curing process of UF resins, we proposed using the derivative thermogravimetric...
Properties and characterization of novel expanded dickite based composite phase change material
01/04/2022 -
A mortar coating with dual properties of self?healing and damage indication based on microcapsules.Microcapsule?based mortar coating can highlight micro?cracks in blue color.Micro?cracks in the...
Reinforcing urea?formaldehyde based composite foam by formation of tailored chemical/mechanical interlocking structure
10/02/2022 -
Urea?formaldehyde (UF) foam is considered to be a potential alternative for commercial polymeric foams due to its intrinsic flame retardancy and inexpensiveness, but it showed high brittleness and...
Physical and Mechanical Properties of Particleboard Produced with Addition of Walnut (Juglans regia L.) Wood Residues
09/02/2022 -
The depletion of natural resources and increased demand for wood and wood-based materials have directed researchers and the industry towards alternative raw materials for composite manufacturing,...
Production of Particleboard Using Various Particle Size Hemp Shives as Filler
24/01/2022 -
Research was performed into the use of hemp shive as a fast-growing and carbon-storing agricultural waste material in the production of particleboard for the construction industry. Hemp shives were...
Recent developments in the performance of micro/nanoparticle-modified urea-formaldehyde resins used as wood-based composite binders: A review
01/04/2022 -
Urea-formaldehyde resins (UFs) for adhesives have attracted particular interest among other thermosetting polymers applied in the broad area of wood panels technology. UFs are the most common...
