Halogen-Free Intumescent Coating Using Terpene Binders
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Solution Overview
Problem
Solvent-based fire protection coatings have poor weather resistance due to their porosity and reliance on halogen-containing components, which impair the stability of the coating by allowing water penetration.
Innovation Solution
A halogen-free intumescent fire protection coating using a film-forming binder based on terpenes or polyterpenes, combined with melamine, ammonium phosphates, and carbon-forming substances, along with auxiliaries and additives, to enhance weather stability and fire protection without chlorinated paraffin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If solvent-based fire protection coatings use halogen-containing components and mineral oil derivatives as binders, then fire protection performance is achieved, but weather resistance deteriorates due to porosity and water penetration
Solution Approach 1:
The patent removes halogen-containing components (specifically chlorinated paraffin) and mineral oil derivative binders from the coating formulation. This extraction eliminates the sources of poor weather resistance while maintaining fire protection through alternative halogen-free flame retardant systems and natural oil-based binders
Solution Approach 2:
The patent changes the chemical composition parameters by substituting synthetic halogenated compounds with natural oil-based binders (linseed oil, tung oil, soya bean oil) and halogen-free flame retardants. This parameter change transforms the coating from halogen-based to halogen-free, improving weather resistance while preserving fire protection capabilities
2Stability of the object's composition
If the coating uses natural oil-based binders without halogenated components, then weather resistance improves, but fire protection performance may deteriorate
Solution Approach 1:
The patent creates a composite coating system combining natural oil-based binders with halogen-free flame retardant components (ammonium polyphosphate, melamine, pentaerythritol, zinc borate). This composite approach integrates the weather resistance benefits of natural oils with the fire protection capabilities of inorganic flame retardants, achieving both objectives simultaneously
Solution Approach 2:
The patent replicates the fire protection function previously achieved by halogenated compounds through alternative chemical mechanisms. Instead of using chlorinated paraffin for flame retardancy, the system uses combinations of ammonium polyphosphate, melamine, and zinc borate that provide equivalent or superior fire protection without compromising weather resistance
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 coating achieves improved weathering stability and maintains effective fire protection properties, preventing water penetration and ensuring durability even when the pigment volume concentration reaches the supercritical range.
Implementation Method 1
Intumescent fire protection coatings, also known as insulating coatings, are characterized by the fact that they foam up in the event of a fire under the influence of appropriate temperatures
Implementation Method 2
this foaming of the aforementioned fire protection coating prevents or at least hinders the transmission of heat to ceilings, steel structures, walls, cables, pipes and other materials
Data Source
AI summary
The invention relates to a halogen-free, intumescent fire-proof coating, characterised in that it contains at least one terpene- and/or polyterpene-based film-forming binder, and to the use thereof.