In the modern electrical and electronic industries, the demand for safety and environmental sustainability is driving a significant shift in material standards. GPO3 Halogen-free Flame Retardant Technology has emerged as the optimized solution for enhancing the fire safety of Glass Fiber Reinforced Unsaturated Polyester Resin Insulating Sheets (UPGM203).
Why Switch to Halogen-free GPO3 Sheets?
Traditional flame retardants often rely on halogenated components like brominated epoxy resins. While effective, they release toxic gases and corrosive substances during combustion, posing severe risks to personnel and equipment.
RDS GPO3 halogen-free sheets eliminate these hazards by excluding fluorine, chlorine, bromine, iodine, and astatine from the production system. Through chemical modification and filler synergies, these sheets maintain superior insulation and mechanical strength while achieving eco-friendly flame retardancy.
The Science Behind Halogen-free Flame Retardancy
How does GPO3 achieve high-level flame retardancy without halogens? The technology works through three primary mechanisms:
- Flame Retardant Cohesion: Under high temperatures, a dense carbon layer forms on the surface. This layer isolates oxygen and heat, preventing the resin from melting and dripping.
- Heat-Absorbing Decomposition: Inorganic fillers like aluminum hydroxide decompose to release water vapor, absorbing heat and creating a protective oxide barrier.
- Gas-phase Dilution: Non-halogen retardants (e.g., phosphorus-based) release inert gases like carbon dioxide to dilute combustible gases, effectively interrupting the fire cycle.
Technical Note: The phosphorus and nitrogen composite system catalyzes the resin matrix to form a stable carbon layer, suppressing combustion at the source.
Key Application Scenarios
The "high flame retardancy + environmental safety" profile makes these sheets indispensable in several high-stakes fields:
1.Rail Transportation
For metro and high-speed rail, low-smoke and halogen-free materials are mandatory. In sealed electrical cabinets, preventing toxic gas diffusion is a matter of passenger life safety.
2.New Energy & EV Industry
Applications in EV battery packs, energy storage stations, and photovoltaic inverters require resistance to electrolyte corrosion and strict compliance with ELV and energy storage standards.
3.Global Export Electrical Products
To enter markets in the EU, North America, and Japan, products must meet strict standards like the EU RoHS 2.0 Directive and US UL 94 V-0. Traditional halogen-containing GPO3 sheets are no longer viable for these regions.
Why Choose RDS Composite?
At RDS Composite, we manufacture various thicknesses of GPO3 sheets that rigorously meet UL94-V0 standards. Our production process—from raw material procurement to final quality checks—ensures that every sheet provides reliable insulation and fire protection for international projects.
- Compliance: Fully compliant with halogen-free environmental standards.
- Performance: High vibration and impact resistance for industrial use.
- Service: Timely delivery and consistent quality management.
Ready to upgrade your insulation materials? Contact our technical team today for a custom quote or material sample.