一种微胶囊复合灭火组合物及其制备方法与应用
By encapsulating liquid core material with modified montmorillonite to form a microcapsule composite fire extinguishing composition, which is then sprayed onto the inner wall of the lithium battery casing, the heat absorption and insulation properties of montmorillonite are utilized to form a Si-O bond flame retardant layer. The liquid core material decomposes to produce polyphosphoric acid and PO free radicals to isolate oxygen and form a char layer. This solves the problem that existing fire extinguishing agents cannot completely extinguish lithium battery fires, achieving the effect of complete extinguishing and preventing reignition.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHONGQING YUJIE FIRE FIGHTING EQUIP CO LTD
- Filing Date
- 2024-02-04
- Publication Date
- 2026-07-17
AI Technical Summary
Existing fire extinguishing agents cannot completely extinguish lithium battery fires, which are prone to reignition. Methods such as physical dilution to isolate oxygen or interrupt the combustion chain are not very effective.
Modified montmorillonite is used to encapsulate liquid core material 1-butyl-3-methylimidazolium dibutyl phosphate to form a microcapsule composite fire extinguishing composition. This composition is then mixed with liquid epoxy resin, antioxidant, film-forming agent, and dispersant, and sprayed onto the inner wall of the lithium battery casing to form a fire extinguishing and protective coating. The heat absorption and insulation properties of montmorillonite are utilized to form a Si-O bond flame retardant layer. The liquid core material decomposes to produce polyphosphoric acid and PO free radicals to isolate oxygen and form PNP and POP chemical bonds to form a carbon layer.
It achieves complete extinguishing of lithium battery fires and prevents reignition. It protects the battery through multi-layer flame retardancy and oxygen isolation, and is halogen-free, environmentally friendly and safe.