Epoxy Waterproof Adhesive for Bridge Deck Interlayer Bonding
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Solution Overview
Problem
Existing waterproof adhesive materials for bridge decks face challenges such as high cost, inadequate waterproofing, brittleness, poor durability, and insufficient interlayer adhesion under environmental and traffic loads.
Innovation Solution
An epoxy waterproof adhesive material is developed, comprising a specific ratio of components A and B, which include epoxy resin, reactive diluent, adhesion promoter, curing accelerator, curing agent, and liquid rubber, optimized for high strength, flexibility, and interfacial adhesion, and capable of re-liquefaction at high temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional waterproof adhesive materials are used, then cost is reduced, but waterproofing performance and interlayer adhesion are insufficient
Solution Approach 1:
The patent uses composite materials by combining epoxy resin with rubber particles and silane-modified polymers to create a waterproof adhesive that achieves both high reliability and cost-effectiveness. The composite formulation integrates multiple material functions into a single system, improving waterproofing performance without proportionally increasing cost.
Solution Approach 2:
The patent modifies the chemical and physical parameters of the adhesive material by adjusting the molecular structure through silane modification and controlling particle size distribution of rubber additives. These parameter changes enhance waterproofing performance while maintaining cost efficiency through optimized material composition.
2Strength
If high strength and flexibility are improved, but re-liquefaction capability is lost
Solution Approach 1:
The patent utilizes phase transition properties by formulating the adhesive with thermoplastic components that can transition between solid and liquid states. The silane-modified polymer and rubber composite structure allows the material to maintain strength at service temperatures but revert to a liquid state at elevated temperatures, enabling re-liquefaction for construction adjustments.
Solution Approach 2:
The adhesive composition is designed with dynamic properties that allow it to change its physical state based on temperature conditions. The combination of cross-linked epoxy structures and thermoplastic modifiers creates a material that dynamically adjusts between rigid bonding state and fluid reworkable state.
3Loss of energy
If curing temperature is reduced to minimize volatilization, but curing speed and adhesion are compromised
Solution Approach 1:
The patent changes the chemical parameters of the curing system by introducing silane-modified polymers that enable low-temperature curing reactions. The modified molecular structure allows the adhesive to achieve full adhesion strength at reduced temperatures, preventing curing agent volatilization while maintaining reliable interlayer bonding.
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 epoxy waterproof adhesive material exhibits excellent interfacial adhesion, high strength, prominent flexibility, and adjustable performance, ensuring durable interlayer bonding and waterproofness, while its re-liquefaction property enhances construction efficiency by allowing re-melting during pavement formation.
Implementation Method 1
an epoxy resin 100 parts by massa reactive diluent 2 parts by mass to 10 parts by mass, and an adhesion promoter 0.5 part by mass to 1.5 parts by mass; and the component B includes (or consists of) the following raw materials in parts by mass: a curing accelerator 4 parts by mass to 12 parts by mass, a curing agent 70 parts by mass to 85 parts by mass
Implementation Method 2
The epoxy waterproof adhesive material exhibits excellent interfacial adhesion, high strength, prominent flexibility, and excellent waterproofness, and could be re-liquefied at a high temperature after initially being cured
Data Source
AI summary
Provided are an epoxy waterproof adhesive material and a preparation method and use thereof. The epoxy waterproof adhesive material includes a component A and a component B in a mass ratio of 1:(0.8-1.2). The component A comprises the following raw materials in parts by mass: 100 parts of an epoxy resin, 2 parts to 10 parts of a reactive diluent, and 0.5 part to 1.5 parts of an adhesion promoter; and the component B comprises the following raw materials in parts by mass: 4 parts to 12 parts of a curing accelerator, 70 parts to 85 parts of a curing agent, and 8 parts to 20 parts of a liquid rubber.