A kind of heat-insulating refractory material for building curtain wall and preparation method thereof
By using a composite matrix of modified polyphenyl polymethylene polyisocyanate resin and modified carbon fibers in building curtain wall materials, as well as flame retardant coatings of ammonium polyphosphate, sorbitol and dicyandiamide, the problem of insufficient fire resistance of existing curtain wall materials is solved, and higher fire resistance and mechanical properties are achieved.
CN118725723BActive Publication Date: 2025-03-25GUANGZHOU BOWEI JIANKE ENG CO LTD
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Patent Information
- Application Number
- CN202410932437.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2044-07-12
AI Technical Summary
Technical Problem
The fire resistance of existing building curtain wall materials is insufficient and poses safety risks.
Method used
Using a composite material of a composite matrix and a flame retardant coating, the composite matrix consists of modified polyphenyl polymethylene polyisocyanate resin, modified carbon fiber, filler, plasticizer and foaming agent, and the coating consists of ammonium polyphosphate, sorbitol and dicyandiamide.
Benefits of technology
The fire resistance and mechanical properties of the material are significantly improved, and the flame retardant coating significantly reduces the combustion rate through synergistic effects and forms a stable carbon layer.
✦ Generated by Eureka AI based on patent content.
Abstract
The present invention provides a thermal insulation refractory material for building curtain walls and a preparation method thereof, the material comprising a composite matrix and a flame retardant coating coated on the surface of the composite matrix, the composite matrix comprising the following raw materials by weight: 50-70 parts of modified polyphenyl polymethylene polyisocyanate resin, 10-20 parts of modified carbon fiber, 10-20 parts of filler, 3-8 parts of plasticizer, 2-5 parts of foaming agent, the flame retardant coating comprising ammonium polyphosphate, sorbitol, dicyandiamide. The ammonium polyphosphate decomposes to produce polyphosphoric acid and polyphosphoric acid during combustion, promoting the formation of a carbon layer; sorbitol dehydrates and carbonizes under the action of the above-mentioned polyphosphoric acid and polyphosphoric acid during combustion to form a stable carbon layer; dicyandiamide decomposes to release nitrogen and other gases during combustion, inhibiting flame diffusion and reducing the combustion rate, and the nitrogen and other gases produced at the same time cause the carbon layer to expand to form a porous structure, further reducing the combustion rate. Ammonium polyphosphate, sorbitol, and dicyandiamide act synergistically, so that the flame retardant coating exhibits excellent fire resistance.
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