Flexible Flame-Retardant Coating Composition for Low-Temperature Curing
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Solution Overview
Problem
Existing flame-retardant coating compositions struggle to achieve both high flame retardancy and flexibility, particularly when applied to flexible films, often requiring high-temperature curing and limiting their application to specific products.
Innovation Solution
A flame-retardant flexible coating composition incorporating a siloxane binder with epoxy or dimethyl groups and a phosphorus-based flame retardant, allowing for low-temperature curing and forming a flexible coating layer with excellent flame-retardant properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If inorganic substances or inorganic compounds are used in combination with organic binders to achieve flame retardancy, then flame retardancy is improved, but flexibility deteriorates and high-temperature curing is required
Solution Approach 1:
The patent uses a composite binder system combining siloxane binder with epoxy group or dimethyl group and phenyl group, together with phosphorus-based flame retardant in specific ratios (100-300% by weight). This composite material approach allows the coating to achieve both flame retardancy (passing UL94 V-0 or V-1 tests) and flexibility (maintaining film integrity after bending tests) simultaneously, resolving the contradiction between these two properties.
Solution Approach 2:
The patent changes the chemical composition parameters of the binder system by introducing specific siloxane structures with epoxy groups or dimethyl groups combined with phenyl groups, and optimizes the phosphorus-based flame retardant content ratio. This parameter optimization enables the coating to cure at lower temperatures (60-80°C) while maintaining both flame retardancy and flexibility, eliminating the need for high-temperature curing that would damage flexible substrates.
2Ease of operation
If organic binders are used to maintain flexibility, then flexibility is improved, but flame retardancy deteriorates
Solution Approach 1:
The patent creates a composite material system where siloxane binder with specific functional groups (epoxy or dimethyl with phenyl) is combined with phosphorus-based flame retardant. This composite approach allows the organic binder to provide flexibility while the phosphorus-based flame retardant component provides flame protection, achieving both flexibility (passing bending tests) and flame retardancy (UL94 V-0 or V-1) simultaneously.
3Reliability
If high-temperature curing is applied to achieve flame retardancy, then flame retardancy is improved, but product suitability deteriorates due to restrictions on flexible films
Solution Approach 1:
The patent changes the curing temperature parameter from conventional high temperatures to low temperatures (60-80°C) by optimizing the siloxane binder composition with epoxy groups or dimethyl groups and phenyl groups, combined with phosphorus-based flame retardant. This parameter change allows the coating to achieve flame retardancy (UL94 V-0 or V-1) while being suitable for flexible films and other temperature-sensitive substrates that cannot withstand high-temperature curing, thereby improving product suitability and versatility.
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 provides a flexible coating layer with high flame retardancy, suitable for various products, including films, through low-temperature curing, reducing damage and maintaining flexibility.
Implementation Method 1
a siloxane binder containing at least any one of an epoxy group or a dimethyl group and a phenyl group
Implementation Method 2
a siloxane binder containing at least any one of an epoxy group or a dimethyl group and a phenyl group
Implementation Method 3
a phosphorus-based flame retardant
Data Source
AI summary
A first task of the invention is to provide a flame-retardant flexible coating composition for a coating layer applied onto a surface of a product to satisfy both high flame retardancy and high flexibility. In an effort to achieve the task, a first aspect of the invention may provide a flame-retardant coating composition including a siloxane binder containing at least any one of an epoxy group or a dimethyl group and a phenyl group, and a phosphorus-based flame retardant.