Biomass-Derived Furan Epoxide Adhesive for Low Contraction
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Solution Overview
Problem
Conventional adhesive materials derived from petrochemicals pose environmental concerns due to VOC emissions and rapid curing, which leads to excessive contraction, making them unsuitable for applications requiring precise dimensional stability.
Innovation Solution
A furan-based curable compound derived from biomass, incorporating two epoxide functional groups, is developed to replace petrochemical-derived adhesives, offering a solvent-free, low contraction ratio, and cost-effective solution through a method involving the reaction of furan-based compounds with epichlorohydrin using a Phase Transfer Catalyst in a bi-phasic solvent system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional petrochemical-derived adhesive materials are used, then adhesive performance is achieved, but environmental pollution occurs due to VOC emissions and toxic substances
Solution Approach 1:
The patent changes the chemical composition parameters by using furan-based compounds derived from biomass (cellulose, hemicellulose, starch) instead of petrochemicals. This substitution maintains adhesive functionality while eliminating VOC emissions and toxic substances, as the biomass-derived compounds undergo different curing chemistry that does not release harmful volatile organic compounds.
Solution Approach 2:
The patent creates composite adhesive formulations by combining furan-based compounds with specific curing agents and functional additives. This composite approach ensures that the adhesive maintains necessary bonding performance while the furan-based backbone provides environmental benefits through biodegradability and lack of toxic emissions.
2Manufacturing precision
If conventional petrochemical adhesives are used, then adhesive bonding is achieved, but excessive contraction occurs during curing affecting dimensional stability
Solution Approach 1:
The patent changes the chemical structure parameters by incorporating furan rings and specific functional groups (epoxide, hydroxyl, carboxyl) that enable curing through mechanisms with minimal volume change. The furan-based compounds undergo polymerization or crosslinking reactions that preserve dimensional stability, avoiding the excessive contraction associated with conventional petrochemical adhesives.
3Object-affected harmful factors
If biomass-based furan compounds are used, then environmental friendliness is improved, but curing rate and efficiency may be reduced
Solution Approach 1:
The patent introduces specific curing agents and catalysts as intermediaries to accelerate the curing reaction of furan-based compounds. These curing agents mediate between the biomass-derived furan compound and the crosslinked polymer structure, enabling faster and more efficient curing while maintaining the environmental benefits of the biomass-based formulation.
Solution Approach 2:
The patent changes the reaction conditions parameters (temperature, pH, catalyst concentration) to optimize the curing rate of furan-based compounds. By adjusting these parameters, the patent achieves fast curing efficiency comparable to petrochemical adhesives while maintaining the environmental friendliness of the biomass-based material.
4Object-affected harmful factors
If solvent-free formulation is used, then environmental pollution is reduced, but material handling and processing may become more difficult
Solution Approach 1:
The patent changes the physical parameters of the adhesive formulation by using furan-based compounds with optimized viscosity and rheological properties. These parameter adjustments ensure that the solvent-free formulation remains easy to handle, spread, and process, eliminating the need for solvents while maintaining operational ease through careful control of material physical properties.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The furan-based curable compound achieves a significantly reduced curing contraction ratio, providing an environmentally friendly alternative with improved efficiency and cost-effectiveness for adhesive applications, suitable for precise dimensional stability requirements.
Implementation Method 1
a method involving the reaction of furan-based compounds with epichlorohydrin using a Phase Transfer Catalyst in a bi-phasic solvent system
Implementation Method 2
curable, particularly, photo-curable adhesive materials containing an acrylate-based or isocyanate-based functional group generally carry a rapid-curing property at a room temperature through a radical polymerization
Data Source
AI summary
The present invention relates to a furan-based curable compound derived from carbohydrate-based biomass, to a solvent-free curable composition, and to a method for preparing thereof, wherein the furan-based curable compound derived from biomass according to the present invention includes two epoxide functional groups bonded to at least one furan-based compound. The present invention may provide an environmentally friendly next-generation curable compound comprising a novel furan-based compound derived from biomass, which may be substituted for curable materials derived from oil resources, as a basic backbone, as well as a composition containing the same. According to the present invention, a curable material, which has a low contraction ratio during curing as compared to conventional radical-type curing materials, may be obtained, and a compound applied to the novel curing material may be prepared with a combination of excellent efficiency and cost-effectiveness.