Cycloaliphatic Epoxy Adhesive Composition for Fast-Cure Anchoring
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Solution Overview
Problem
Adhesives used in anchoring applications, such as securing anchor pins in concrete, steel, and wood, face challenges in maintaining strong bonds under various environmental conditions, requiring improvements in fast cure time, high compressive and tensile strength, and low shrinkage.
Innovation Solution
A novel adhesive composition comprising a liquid epoxy resin and an Amine, with specific cycloaliphatic amines, organic acids, and additives like ceramic microspheres and glass fibers, which forms a two-component epoxy-resin bonding system for enhanced bonding properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional adhesives are used in anchoring applications, then the adhesive bond can maintain anchor pins in substrates, but the cure time is slow and the bond strength is insufficient under various environmental conditions
Solution Approach 1:
The patent modifies the chemical composition parameters of the adhesive by incorporating cycloaliphatic-based epoxy compounds with specific molecular structures and ratios, which fundamentally changes the curing kinetics and bond strength characteristics to achieve both fast curing and high reliability
Solution Approach 2:
The adhesive comprises a composite formulation combining cycloaliphatic-based epoxy compounds, aromatic amines, and other additives in specific proportions, creating a multi-component system that synergistically provides both rapid curing and superior bond strength
2Productivity
If the adhesive composition is optimized for fast cure time, then the productivity increases, but the compressive strength and tensile strength may be compromised
Solution Approach 1:
The patent carefully adjusts the molecular weight, epoxy equivalent weight, and amine hydrogen equivalent weight parameters within specific ranges to achieve optimal balance between cure speed and developed strength, preventing premature curing while ensuring high final strength
3Ease of manufacture
If the adhesive formulation uses simpler components, then the ease of manufacture increases, but the performance under environmental conditions (water absorption, shrinkage) deteriorates
Solution Approach 1:
The patent employs a composite adhesive system combining cycloaliphatic epoxy compounds, aromatic amines, and functional additives that work synergistically to provide excellent water resistance, low shrinkage, and high bond strength while maintaining reasonable manufacturing complexity
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 composition demonstrates improved cure times and superior bond strength, with increased compressive modulus and reduced water absorption, outperforming industry standards in anchoring applications.
Implementation Method 1
a first part comprising a liquid epoxy resin and a second part comprising an Amine
Implementation Method 2
reduced water absorption
Data Source
AI summary
A new adhesive composition comprising a cycloaliphatic-based epoxy composition, which is particularly suitable for use as a structural adhesive in anchoring applications.