ISO 9001/10002/14001/45001 Certified
Fiberr USA offers molded grating in two resin systems: isophthalic polyester (ISO) and vinyl ester (VE). The appropriate resin depends on the chemical environment, mechanical-performance requirements, operating temperature, required service life, and budget.
Resin forms the continuous matrix surrounding the glass-fiber reinforcement. It provides corrosion resistance, transfers loads between the reinforcing fibers, protects the fibers from environmental exposure, and influences the finished grating’s durability, thermal performance, toughness, and resistance to chemical attack.
A thermosetting polyester resin based on isophthalic acid. ISO resin provides good corrosion resistance, mechanical strength, and durability in general industrial applications. It is widely used where moderate chemical exposure and cost efficiency are priorities.
A thermosetting resin produced by the esterification of an epoxy resin with methacrylic or acrylic acid. VE resin offers superior chemical resistance, toughness, and resistance to stress cracking. It is recommended for environments involving strong acids, solvents, elevated temperatures, or prolonged exposure to aggressive chemicals.
Table 10: Resin Selection Matrix
| Factor | Isophthalic Polyester (ISO) | Vinyl Ester (VE) |
|---|---|---|
| Chemical Name | Isophthalic Polyester | Epoxy-Based Vinyl Ester |
| Relative Cost | Baseline | Approximately 35% higher than ISO |
| General Chemical Resistance | Good | Excellent |
| Resistance to Acids and Solvents | Moderate | High |
| Mechanical Strength | High | Very High |
| Thermal Resistance | Suitable up to approximately 80°C (176°F) | Suitable up to approximately 105°C (221°F) |
| UV Resistance | Good with additives | Excellent with additives |
| Best Use Cases | General industrial flooring, walkways, access platforms, and municipal projects | Chemical-processing plants, wastewater treatment, offshore facilities, and heavily corrosive industrial environments |
Resin selection should be verified against the specific chemicals, concentrations, temperatures, exposure duration, and operating conditions of the application. See the Molded Grating Chemical Resistance Guide for additional application guidance.
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