SMC (Sheet Molding Compound) for cable protection, U-shaped fireproof plate and preparation method of U-shaped fireproof plate
By using phenolic resin, mesophase asphalt-based carbon fibers, specific catalysts and halogen-free flame retardants in SMC sheets, the problem of insufficient oxygen index in the existing SMC sheets is solved, and the effects of high oxygen index, excellent flame retardant performance and low smoke density are achieved.
CN119708753AActive Publication Date: 2025-03-28SHANDONG RUICHENG AEROSPACE CARBON MATERIAL CO LTD
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Patent Information
- Application Number
- CN202411904987.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2044-12-23
AI Technical Summary
Technical Problem
The oxygen index of existing SMC sheets is only around 25 to 30%, which cannot meet the strict requirements of the cable industry for flame retardancy, oxygen index and smoke density.
Method used
Phenolic resin and mesophase asphalt-based carbon fiber are used as the main materials, and polyaniline doped in polyaniline as catalysts and ultrafine aluminum hydroxide is combined as halogen-free flame retardant, the flame retardancy and oxygen index of SMC sheets are improved.
Benefits of technology
The oxygen index of the prepared SMC sheet reached ≥50%, the flame retardant grade reached V0, the smoke density was ≤12mg/cm3, and the overall performance was significantly better than the existing technology.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention belongs to the technical field of cable protection, and particularly relates to an SMC (Sheet Molding Compound) for cable protection, a U-shaped fireproof plate and a preparation method of the U-shaped fireproof plate. The preparation raw materials comprise 75-85 parts of phenolic resin, 95-105 parts of mesophase pitch-based carbon fibers, 220-240 parts of a halogen-free flame retardant, 6-8 parts of a diluent, 8-10 parts of an internal release agent, 1.5-2.5 parts of a catalyst, 0.5-1.5 parts of a thickener and 0.5-3 parts of a coupling agent. The catalyst is aniline or polyaniline in a polyphosphoric acid doped state. Phenolic resin is used as a resin matrix, aniline or polyaniline in a polyphosphoric acid doped state is used as a catalyst, and the phenolic resin and the catalyst have a synergistic effect, so that the prepared SMC material has excellent flame retardant property.
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