Materials

 

Materials

Construction and mechanism of efficient flame retardant system for alkali lignin?enhanced rigid polyurethane foam
02/06/2024 - Adsorptive removal of phosphate from aqueous solutions using FeCl3 immobilized MFU resinAbstractThe surplus phosphorus in aquatic environments trigger eutrophication, an irreversible pollution stage...
Molded Plywood with Proportions of Beech Bark in Adhesive Mixtures: Production on an Industrial Scale
02/04/2024 - Molded plywood is used for furniture components such as seats, backrests, or integral seat shells, and it must be durable and harmless to health. Molded plywood is made with urea-formaldehyde (UF)...
The Removal of Formaldehyde from Urea Formaldehyde Adhesive by Sodium Borohydride Treatment and Its Application in Plywood
02/04/2024 - The global production of plywood is constantly increasing as its application in the furniture and interior decoration industry becomes more widespread. An urgent issue is how to decrease the...
Effect of Nano-Silver Solution Microcapsules Mixed with Rosin-Modified Shellac Microcapsules on the Performance of Water-Based Coating on Andoung Wood (Monopetalanthus spp.)
27/02/2024 - To obtain dual functions of antibacterial and self-healing of a coating, nano-silver solution microcapsules coated with urea formaldehyde resin were selected for antibacterial agents, and...
Characteristics of the Pressing Process and Density Profile of MUPF-Bonded Particleboards Produced from Waste Plywood
10/02/2024 - Waste plywood containing phenol–formaldehyde (PF) resin is one of the materials that are difficult to use in the production of particleboards based on UF resin. Therefore, the aim of...
Particleboard Creation from Agricultural Waste Residue of Seed Hemp
28/07/2023 - In this research, agricultural residue of seed hemp variety “Adzelvieši” was used to create hemp particleboard samples. Hemp was grown in three experimental...
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
- 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...