Fire Protection Composition for Battery Containers
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Solution Overview
Problem
Fire protection coatings for battery containers in electric vehicles face challenges in achieving good adhesion to metal surfaces, maintaining quality through curing ovens without mass loss, and providing corrosion resistance while maintaining low viscosity for spray application.
Innovation Solution
A two-component fire protection composition comprising liquid epoxy resin and ammonium polyphosphate, combined with specific adducts and reactive diluents, which are mixed to achieve low viscosity and high adhesion, maintaining fire protection and corrosion resistance without significant mass loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If solvents are reduced to achieve low mass loss, then mass loss is reduced, but viscosity strongly increases
Solution Approach 1:
The patent changes the chemical composition parameters by introducing a specific two-component system with epoxy resin and polyamine, where component B contains reactive diluents that modify the viscosity parameter. This allows the coating to maintain low viscosity during application while achieving low mass loss during curing through the specific chemical formulation.
Solution Approach 2:
The patent uses a composite two-component system where component A (epoxy resin with ammonium polyphosphate) and component B (polyamine adducts with reactive diluents) are combined. This composite approach allows the formulation to achieve both low viscosity for easy application and low mass loss during curing, as the components work synergistically.
2Reliability
If fire protection coatings are applied to battery containers, then fire protection is improved, but adhesion to metal surfaces without pretreatment must be maintained
Solution Approach 1:
The patent changes the chemical parameters of the coating formulation by using epoxy resin and polyamine components that inherently provide good adhesion to metal surfaces. The specific chemical composition allows the coating to bond effectively to metal without requiring surface pretreatment, while maintaining fire protection properties.
Solution Approach 2:
The epoxy resin and polyamine components act as intermediaries that facilitate adhesion between the fire protection coating and the metal substrate. These components create a bonding interface that allows the coating to adhere strongly to metal surfaces without pretreatment while maintaining the fire protection function.
3Reliability
If CDC paint is applied for corrosion resistance, then corrosion protection is improved, but additional coating steps and ovens are required
Solution Approach 1:
The patent creates a multi-functional coating that simultaneously provides fire protection, corrosion resistance, and adhesion to metal surfaces. This universal coating eliminates the need for separate CDC paint application and additional curing ovens, as the fire protection coating performs multiple protective functions in a single layer and single curing step.
Solution Approach 2:
The patent merges the functions of fire protection and corrosion resistance into a single coating system. By combining epoxy resin, ammonium polyphosphate, and polyamine components, the coating achieves both fire protection and corrosion resistance properties, eliminating the need for separate CDC painting steps.
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 composition ensures excellent adhesion, low mass loss, and enhanced corrosion resistance, allowing for effective spray application and improved fire protection without increasing VOC emissions.
Implementation Method 1
Component A comprises liquid epoxy resin... Component B comprises at least one adduct from polyamine with epoxy...
Implementation Method 2
ammonium polyphosphate A2... in order to have good fire protection values after passing through the curing ovens
Implementation Method 3
passing through the curing ovens... after passing through curing ovens
Data Source
AI summary
The present invention relates to a fire protection composition comprising a component A and a component B. Component A comprises an epoxy liquid resin and ammonium polyphosphate. Component B comprises an adduct B1 of (i) at least one polyamine having at least three amine hydrogens reactive toward epoxide groups with (ii) at least one epoxide, an ether group-containing aliphatic primary diamine B2, and an aliphatic or cycloaliphatic primary diamine B3. The fire protection composition has good adhesion to metal, and after passing through burning-in ovens in the automotive industry still shows good fire protection values with a low mass loss and is suitable for spray application.