Vehicle Seat Flame-Retardant Coating to Prevent Hot-Water Marks
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Solution Overview
Problem
Current flame-retardant coating agents for vehicle seats face challenges in achieving sufficient flame retardancy and preventing water spotting without using halogen or antimony compounds, particularly with ammonium polyphosphate (APP), which is water-soluble and increases costs, and existing solutions fail to effectively reduce APP's solubility in hot water.
Innovation Solution
A flame-retardant coating agent comprising a nitrogen-containing compound, such as melamine or triazine, combined with a phosphorus-based compound and a thermoplastic resin, specifically designed to form a durable film that suppresses water spotting and maintains flame retardancy equal to or exceeding that of APP, while being free from halogen and antimony.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ammonium polyphosphate (APP) is used as a flame retarder, then flame retardancy is improved and cost is reduced, but water solubility increases causing water spotting and slime formation
Solution Approach 1:
The patent uses a melamine-based resin as an intermediary substance that forms a coating layer on the fiber surface. This coating layer acts as a barrier that prevents water from penetrating to the APP particles, thereby preventing water spotting while allowing the APP to maintain its flame retardant function. The melamine resin serves as a mediator between the water environment and the APP flame retarder.
Solution Approach 2:
The patent changes the physical state and surface properties of APP by encapsulating it within a melamine resin coating. This parameter change transforms the water-soluble APP particles into water-resistant coated particles, fundamentally altering their interaction with water while preserving their flame retardant properties when exposed to heat.
2Adaptability or versatility
If phosphorus-based flame retarders are used instead of halogen-based compounds, then environmental compatibility is improved, but flame retardancy becomes inferior
Solution Approach 1:
The patent creates a composite system combining melamine resin (nitrogen-containing compound) with APP (phosphorus-based compound). This composite approach synergistically combines the flame retardant properties of both nitrogen and phosphorus compounds, achieving flame retardancy that meets or exceeds that of halogen-based compounds while maintaining environmental compatibility.
Solution Approach 2:
The patent merges the functions of the melamine resin (which provides water resistance and structural matrix) with the APP (which provides flame retardancy). By combining these two substances in a specific ratio and formulation, the patent achieves both superior flame retardancy and environmental compatibility that neither substance could achieve alone.
3Adaptability or versatility
If metal hydroxides or phosphoric acid esters are used as flame retarders, then environmental compatibility is improved, but flame retardancy and cost-effectiveness deteriorate
Solution Approach 1:
The patent changes the formulation parameters by using APP in a coated state rather than in its raw form. This parameter change allows the use of a cost-effective, environmentally compatible phosphorus-based compound while achieving superior flame retardancy through the synergistic effect with melamine resin and the protective coating structure.
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 solution provides a vehicle seat material with enhanced flame retardancy and reduced water spotting resistance, balancing cost-effectiveness and design flexibility by using a nitrogen-containing compound and phosphorus-based compounds with a thermoplastic resin to create a durable, water-resistant film.
Implementation Method 1
form a durable film that suppresses water spotting and maintains flame retardancy
Implementation Method 2
reduced water spotting resistance, balancing cost-effectiveness and design flexibility by using a nitrogen-containing compound and phosphorus-based compounds with a thermoplastic resin to create a durable, water-resistant film
Data Source
AI summary
Provided is a flame-retardant coating agent for vehicle seats that contains (A) a nitrogen-containing compound, and (C) an aqueous thermoplastic resin. Also provided is a flame-retardant vehicle seat material that does not use a halogen compound or an antimony compound, that exhibits sufficient flame retardancy, and that suppresses the occurrence of marks from hot water.