How to choose fiberglass grating

What is fiberglass grating

GRP grating plate is a resin-based glass fiber reinforced thermosetting plastic plate processed by molding process. As the name implies, it is a kind of plate that uses resin, glass fiber and filler (1:1:1) as raw materials and molds to heat and shape the square shape. It can be widely used in petroleum, chemical, electronics, nuclear power plants, power plants, electroplating, paper making, wine making, pharmaceutical, metallurgy, food processing, transportation, textile printing and dyeing, wastewater treatment, marine exploration and other industries as well as working platforms, equipment platforms, walkways, stair treads, trench covers Guardrail, fence, shelf, bridge plate, filter plate, filler bracket, etc. are ideal products in corrosive environment, and also applicable to civil construction facilities.

What are the common quality defects of fiberglass grating

Cracking and low strength

Falling off and slag

fade

Why are these quality defects

If you want to know how these quality defects come from, you must first know how they are produced, what raw materials are available, and what quality grades are available. Only when you know these can you choose your own FRP grille.

The fiberglass grating is a square heating mold. After the workers have prepared the resin, they pour the resin and fiberglass yarn into the mold alternately in batches. After curing, the mold is fixed and demoulded, and the surface is polished by a grinder before manufacturing.

The raw materials for the production of fiberglass grating include resin (generally unsaturated polyester resin), glass fiber yarn, filler, auxiliary materials and color paste.

Resin: generally 191 # and 196 # resins without special requirements. If there is acid and alkali resistance, high temperature, etc., corresponding models can be selected

Glass fiber yarn: yarn grade is high alkali yarn, medium alkali yarn and non-alkali yarn from low to high

Filler: calcium powder

Auxiliary materials: accelerator, curing agent

Color paste: resin special color paste

Then why are there quality defects such as "cracking, low strength, peeling, slag dropping, and fading"?

The quality of resin is unqualified

In terms of glass fiber yarn, the number of yarn layers is reduced

In terms of fillers, proper addition of calcium powder can improve the performance of the grid, and excessive addition can reduce the cost and strength

From the perspective of auxiliary materials, unqualified auxiliary materials and wrong proportion will lead to production accidents such as non-curing

From the perspective of color paste, poor quality or low addition will lead to color irregularity and fading.