Self-healing, flame retardant and UV resistant lignin-derived epoxy wood coating with a Schiff base structure
View abstract on PubMed
Summary
This summary is machine-generated.This study introduces a novel, self-healing, flame-retardant epoxy coating derived from biomass. The new coating offers enhanced protection for wood materials, addressing sustainability and fire safety concerns.
Area Of Science
- Materials Science
- Polymer Chemistry
- Sustainable Chemistry
Background
- Traditional epoxy resins are flammable, non-recyclable, and petroleum-dependent, hindering fire prevention and sustainable development.
- There is a need for advanced coatings that offer improved safety and environmental profiles for materials like wood.
Purpose Of The Study
- To develop a biomass-based, self-healing, flame-retardant epoxy coating with enhanced properties for wood protection.
- To create a sustainable alternative to conventional petroleum-based epoxy resins.
Main Methods
- Synthesized a vanillin intermediate (VAP) using Schiff base reaction between vanillin and OA-POSS.
- Developed a biomass-based flame retardant (VAPD) by incorporating DOPO into VAP.
- Utilized VAPD as a curing agent for epoxy resin to create VAPDs/EP coatings.
Main Results
- The VAPD-5/EP coating demonstrated 100% self-healing within 35 minutes and excellent UV-shielding.
- Achieved V-0 rating in UL-94 tests and a 29.3% Limiting Oxygen Index (LOI).
- Reduced peak heat release rate (pHRR) by 38% and showed 6H hardness and 4B adhesion.
Conclusions
- A simple strategy for preparing self-healing, flame-retardant epoxy coatings with comprehensive properties was established.
- The developed coatings offer a sustainable and high-performance solution for wood material protection.
- The P-N-Si flame retardant system provides significant improvements in fire safety and material durability.
Related Concept Videos
Wood products encompass a broad range of materials crafted from wood strands, veneers, lumber, and even waste wood-like shreds, designed for both structural and nonstructural purposes. Various specialized wood products have been developed to enhance strength, durability, and versatility in building applications.
Glue-laminated wood, often referred to as glulam, combines multiple smaller pieces of dimensional lumber using adhesives to form a single, larger piece. Cross-laminated timber consists...
Wood panel products are essential materials used in construction for applications such as flooring, siding, and roofing, typically available in standard dimensions of 4 feet by 8 feet, with thicknesses varying from one-quarter of an inch to one and one-eighth inches. Among the most common types of wood panels is plywood, which is produced by gluing multiple layers of thin wood veneers under pressure. The grain of the outer veneers runs lengthwise, while the grains of the interior layers run...
Seasoning of wood is a crucial process aimed at reducing and stabilizing the moisture content within the wood to prevent future shrinkage, structural damage, or aesthetic issues once the wood is used in construction. Wood naturally swells when it absorbs moisture and contracts as it dries.
Achieving equilibrium moisture content is the goal of seasoning; this is the point where the wood's moisture content stabilizes to align with the moisture levels of the surrounding environment. Proper...
Lumber is derived from logs which are harvested, debarked, and processed into long pieces with a rectangular cross-section. The transformation of logs into lumber involves multiple steps, beginning with an automated saw that slices the log into slabs. These slabs are then transported via a conveyor belt to smaller saws, where they are cut into square-edged pieces of specific widths.
Initially, the surfaces of these lumber pieces are rough, and their dimensions may vary slightly from one end to...
Wood surfacing is a critical finishing process designed to smoothen the wood surface, enhance its dimensional accuracy, and make handling safer. This process compensates for potential shrinkage during the seasoning phase by marginally increasing the wood dimensions before surfacing. It also helps correct some distortions that may occur as the wood dries.
The equipment used in the surfacing process is a plane equipped with rotating blades. This tool efficiently smoothens the wood surface and can...
Lumber defects, which can affect both the appearance and structural integrity of wood, include a variety of growth and manufacturing flaws. Growth defects such as knots and knotholes occur where branches were once attached to the tree trunk, with knotholes forming when these knots fall out. Other natural defects include decay and insect damage, which compromise the wood's strength and durability.
Shakes are minor fractures that run along or across the wood's annual rings, while wane is...

