Graphene Oxide Starch Adhesive for Stable Laminated Board Bonding
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Solution Overview
Problem
Existing adhesives for laminated cellulosic boards, such as cardboard, face challenges in providing adequate adhesion and resistance to environmental factors, and the incorporation of graphene oxide in aqueous solutions is not stable, leading to reduced effectiveness and short preparation times.
Innovation Solution
A water-based adhesive comprising 20-40% starch, optional polymers, monolayer graphene oxide as a glue enhancer, and additional components like fungicides and stabilizing agents, which are mixed under controlled conditions to enhance adhesive properties and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If graphene oxide is incorporated into aqueous adhesive solutions, then adhesive enhancement is achieved, but stability of the solution deteriorates
Solution Approach 1:
The patent uses starch as an intermediary substance that mediates between the graphene oxide particles and the aqueous adhesive solution. The starch molecules interact with graphene oxide to prevent aggregation and improve dispersion stability, while simultaneously maintaining adhesive properties. This intermediary approach resolves the contradiction by allowing graphene oxide enhancement without sacrificing solution stability.
Solution Approach 2:
The patent creates a composite adhesive system combining starch, graphene oxide, and aqueous solution. This composite material approach allows the synergistic effects of each component: starch provides stability and binding, graphene oxide provides strength enhancement, and the aqueous solution provides workability. The composite structure resolves the stability-strength contradiction by integrating multiple materials with complementary properties.
2Force
If conventional adhesives are used for laminated cellulosic boards, then basic adhesion is achieved, but resistance to environmental factors deteriorates
Solution Approach 1:
The patent employs a composite adhesive formulation incorporating graphene oxide into the starch-based adhesive system. This composite structure provides both the required adhesion force through starch-protein interactions and enhanced environmental resistance through the unique properties of graphene oxide, including barrier properties and structural reinforcement at the molecular level.
Solution Approach 2:
The patent modifies the chemical and physical parameters of the adhesive system by incorporating graphene oxide at specific concentrations and adjusting formulation parameters such as pH, crosslinking agents, and curing conditions. These parameter changes enable the adhesive to maintain strong bonding while gaining improved resistance to moisture, temperature variations, and other environmental factors.
3Strength
If graphene oxide is added to improve adhesive properties, then adhesion strength is enhanced, but preparation time and complexity increase
Solution Approach 1:
The patent performs preliminary actions by pre-dispersing graphene oxide in the adhesive formulation during the mixing stage, ensuring uniform distribution before application. This preliminary dispersion approach simplifies the overall process by eliminating the need for complex post-application treatments or specialized equipment, while still achieving the desired strength enhancement.
Solution Approach 2:
The patent optimizes the concentration parameters of graphene oxide in the adhesive formulation to achieve effective strength enhancement at minimal additive levels. By carefully controlling the amount of graphene oxide and other formulation parameters, the patent reduces preparation complexity while maintaining improved adhesive performance.
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 adhesive exhibits improved mechanical properties and reduced drying time, resulting in enhanced productivity and resistance to environmental factors, with laminated cellulosic boards showing increased strength and durability.
Implementation Method 1
a glue enhancer based on monolayer graphene oxide for such adhesives
Implementation Method 2
Water-based adhesive for the manufacture of laminated cellulosic boards comprising monolayer graphene oxide
Implementation Method 3
between 20.0 wt % and 40.0 wt % starch
Data Source
AI summary
A water-based adhesive for the manufacture of laminated cellulosic boards includes monolayer graphene oxide as a glue enhancer. Laminated cellulosic boards may be obtained by providing cellulosic plies, applying a water-based adhesive, and contacting the surface of another cellulosic ply to the first cellulosic ply. A method for producing the water-based adhesive includes mixing starch, water and glue enhancer. The glue enhancer is a suspension of between 0.1 wt % and 0.001 wt % of monolayer graphene oxide in water.