Detailed explanation of fiberglass bridge products
Fiberglass Reinforced Plastic Cable Tray (FRP tray) is a cable laying system made of glass fiber reinforced plastic as the core material. It has excellent corrosion resistance, lightweight, insulation and non-conductive characteristics, and is specially used in extreme environments such as chemical, marine, power, and sewage treatment. It is a revolutionary alternative to metal cable trays.
1、 Material and Process Analysis
1. Core components
Fiberglass - Function: Provides mechanical strength (tensile strength ≥ 300MPa) Proportion: 30% -40%
Unsaturated polyester resin - Function: Matrix material (acid alkali/UV resistant) Proportion: 50% -60%
Flame retardant additive - Function: Achieve V0 level fire protection (oxygen index ≥ 28) Proportion: 5% -10%
2. Comparison of molding processes
-Hand lay up molding: Low cost (suitable for irregular parts)
-Extrusion molding: High strength (preferred for standard straight sections)
-Compression molding: optimal surface finish (medical/food grade)
2、 Structural types and performance advantages
1. Mainstream structural forms
Cascade type: open type, good heat dissipation (opening rate ≥ 40%)
Slot type: fully enclosed, rodent and ant resistant (IP55 protection)
3、 Typical application scenarios
1. Extreme corrosive environment
-Chlor alkali chemical industry: moisture resistant chlorine gas (no aging at 90 ℃)
-Ocean platform: salt spray resistance+UV resistance (case study of Beihai Oilfield)
2. Special electrical requirements
-Substation: Insulation characteristics to avoid eddy current losses (below 110kV)
-Photovoltaic power station: anti PID effect (back panel potential balance)
