Epoxy-Amine Adhesive for Low-Temperature Pressed Material Curing
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Solution Overview
Problem
Existing adhesive formulations for producing pressed material molded bodies, such as chipboards and fiberboards, face challenges including high temperatures that lead to damage and scrap, as well as the release of pollutants like formaldehyde and isocyanates during the curing process, which affects efficiency and working conditions.
Innovation Solution
A chemically curable, aqueous two-component adhesive formulation comprising a reactive resin with functional epoxy groups and a curing agent with functional amine groups, which can be mixed directly before application, reducing the need for high temperatures and minimizing pollutant release, allowing for universal application in various production methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high temperatures are used for curing adhesive formulations, then complete curing in the core of pressing mixtures is achieved, but damage to molded bodies occurs and scrap rate increases
Solution Approach 1:
The patent changes the chemical parameters of the adhesive formulation by using a two-component system with epoxy resin and amine curing agent that cures at lower temperatures (100-180°C) compared to conventional adhesives requiring 200-250°C. This parameter change in curing temperature allows complete curing without damaging the molded body structure, thereby resolving the contradiction between achieving complete curing and preventing damage.
2Reliability
If conventional adhesive formulations are used, then high temperature curing is achieved, but pollutants like formaldehyde and isocyanates are released
Solution Approach 1:
The patent changes the chemical composition parameters by replacing conventional urea-formaldehyde or isocyanate-based adhesives with an epoxy-amine two-component system. This parameter change eliminates the release of harmful pollutants like formaldehyde and isocyanates while maintaining effective curing through the epoxy-amine reaction, thus resolving the contradiction between curing effectiveness and pollutant release.
Solution Approach 2:
The patent uses a composite adhesive formulation consisting of two distinct components (epoxy resin and amine curing agent) that work together to provide both effective curing and environmental benefits. This composite approach allows the adhesive system to achieve curing effectiveness without the harmful byproducts associated with single-component conventional adhesives.
3Manufacturing precision
If different adhesive formulations are used for different production procedures, then specific product requirements are met, but efficiency decreases
Solution Approach 1:
The patent creates a universal two-component adhesive formulation that can be applied across multiple production procedures and product types (chipboards, fiberboards, laminated plates, etc.). This single adhesive system replaces the need for multiple different adhesive formulations, thereby maintaining product specification compliance while improving production efficiency through standardization.
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 formulation enables a more process-safe and low-pollutant production of pressed material molded bodies with reduced scrap rates and energy costs, achieving mechanical properties that meet standardized requirements without the need for significant temperature increases, thus improving working conditions and product quality.
Implementation Method 1
A chemically curable, aqueous two-component adhesive formulation comprising a reactive resin with functional epoxy groups and a curing agent with functional amine groups
Data Source
AI summary
A chemically curable, aqueous two-component adhesive formulation for producing pressed material molded bodies, in particular pressed material plates, includes a component A of the adhesive formulation that includes 20 wt. % to 100 wt. % of an aqueous phase of a reactive resin functionalized with functional epoxy groups or a mixture of reactive resins functionalized with functional epoxy groups. A component B of the adhesive formulation includes 30 wt. % to 100 wt. % of an aqueous phase of a curing agent having functional amine groups or a mixture of curing agents having functional amine groups. Additionally, a method for producing pressed material molded bodies, in particular pressed material plates, uses such an adhesive formulation.