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Enhancing Abrasion Resistance in Fiberglass Reinforced Plastics (FRP)

Updated: Jul 29, 2023

When it comes to fiberglass products, one aspect that requires careful consideration is abrasion resistance. By introducing additives like silica carbide or aluminum oxide to the interior surfaces, these products can be significantly reinforced to withstand abrasion. Such modifications are particularly effective in mixing tanks up to the agitator level, inlet piping for desalinization plants, splitter nozzles, and comparable applications.

Several resources delve into this subject extensively, such as the INEOS guide (specifically page 14), the Crimar overview, and the chapter on abrasion resistance in the Mallinson fabrication manual. These resources provide detailed insights into abrasion-resistant modifications.


There are numerous approaches to enhance the abrasion resistance in FRP products, and these include but are not limited to:

  1. Employing urethane-modified resins like Derakane 8084 or Derakane 441.

  2. Introducing abrasion-resistant additives, for instance, silica carbide or aluminum oxide, into the corrosion barrier – the area most susceptible to abrasion.

  3. Incorporation of a Kevlar veil for added durability.

  4. Utilizing thermoplastic liners, such as polypropylene, PVC, or PTFE, are known for their wear-resistant properties.

  5. The integration of replaceable wear plates or substitutable sections of pipe or related equipment for easy maintenance.

  6. Application of different colors in the wear area layers, which serve as a visual indicator of wear extent.

  7. Instituting a regular program to reline wear areas, ensuring the longevity of the product.

  8. For ductwork, deploying "flooded elbows" is recommended. This design allows the abrasive air to impact the water instead of the material directly.

  9. Design modifications to alter the flow. The malleability of FRP parts allows for the creation of complex shapes without the necessity of expensive tooling.

Flooded elbows for duct (potash mine) Floors and walls to a level above agitator blades in mix tanks Design modification to plus carbide liner to modify the flow

In conclusion, fortifying fiberglass products to boost their abrasion resistance is a strategic approach that can notably enhance the durability and operational efficacy of these products across a wide array of uses.

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