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Isophthalic polyester resin is a thermosetting polyester resin used as the matrix system in many fiberglass reinforced plastic (FRP) products. Compared with general-purpose orthophthalic polyester, isophthalic polyester is commonly selected where greater chemical, moisture, or thermal resistance is ..

Wastewater treatment facilities are among the most corrosive industrial environments. Hydrogen sulfide, sulfuric acid formed by bacterial action, chlorine compounds, and constant moisture attack steel, aluminum, and even concrete. Fiberglass reinforced plastic (FRP) is widely used in this industr..

Mining and mineral processing environments subject materials to some of the harshest combined conditions in industry: acidic drainage, abrasive slurries, heavy impact loads, and constant moisture. Steel corrodes quickly in acidic water. Timber rots or is physically worn away. Many plastics lack the ..

When engineers first compare FRP products, one of the earliest questions is often about the manufacturing process. Pultrusion and molding are the two most common methods for making structural FRP components, and they lead to noticeably different material behaviors. Understanding the basic differe..

Case at a glance: Along a busy roadway and in an adjacent public parking area, the existing metal and plastic marker posts were showing clear signs of wear. Bent metal posts from minor vehicle contact and faded, cracked plastic posts from sun exposure were creating a maintenance burden. Ho..

Vinyl ester resin is one of the most common thermosetting matrix materials used in fiberglass reinforced plastic (FRP) products. It sits between standard polyester resins and epoxy resins in terms of chemical resistance, mechanical performance, and cost. When engineers specify FRP for corrosive indu..

Glass fiber is the most widely used reinforcement material in fiberglass reinforced plastic (FRP) products. Among the different glass types available, E-glass — originally developed for electrical insulation applications — is the standard choice for most FRP structural and corrosion-resistant produc..

FRP grating load tables are not universal charts. Each table applies to a specific grating configuration—panel thickness, mesh pattern, resin system, and fiber content—and shows how that configuration behaves under a given span and load. The numbers in the table come from controlled testing, usua..

Case at a glance: In a mining operation, elevated walkways and access platforms around processing equipment had been built with steel grating. Years of moisture, chemical contact, and heavy foot traffic had caused significant corrosion, especially at cut edges and support points. HotFRP su..

Pulp and paper mills combine high humidity, aggressive bleaching chemicals, and continuous production. Walkways, platforms, and support structures in these facilities are exposed to chlorine gas, chlorine dioxide, hypochlorite solutions, and a range of process liquors. Steel rusts quickly in these c..

Case at a glance: A bridge deck in a coastal region had been experiencing concrete deterioration caused by chloride ingress. The original steel reinforcement was corroding, leading to spalling and frequent patch repairs. HotFRP supplied glass fiber reinforced polymer (GFRP) rebar as an alter..

Power generation plants and electrical utilities present a combination of challenges for structural materials. Corrosive cooling water treatment chemicals, coastal salt spray, and the constant presence of electrical equipment all shape material choices. Steel corrodes. Aluminum conducts electricity...

Food and beverage processing facilities place unique demands on building materials. Production areas are washed down frequently, sometimes multiple times per shift. Cleaning agents range from mild detergents to strong caustics and acid-based sanitizers. Organic acids from fruit, dairy, or fermentati..

Case at a glance: In a chemical processing facility, an elevated access platform originally built with steel grating had reached the point where corrosion was creating regular maintenance and safety concerns. HotFRP supplied molded fiberglass grating as a replacement, matched to the platform..

Fiberglass reinforced plastic products installed outdoors are exposed to sunlight, moisture, and temperature changes for years at a time. Among these, ultraviolet radiation from sunlight is one of the most important factors affecting the surface appearance and long-term durability of FRP. Understand..