Vinyl Ester Resins-Introduction

Vinyl Ester Resins-Introduction

Vinyl Ester Resins-Introduction 1593 751 Matin Azizi

Vinyl Ester Resin

Vinyl ester resin is a thermoset resin obtained by esterification of epoxy resin with acrylic acid or Methacrylic acid. The vinyl group of this compound depends on the type of used ester and leads to polymerization.

This resin has lower viscosity than polyester and epoxy resins and can be replaced by polyester and epoxy in thermoset polymers. The type of raw materials used in the manufacture of this resin determines the degree of mechanical, chemical resistance and thermal stability.

Vinyl ester resins categorized into three groups based on Bisphenol A, epoxy Novolac and Bromated epoxy. The use of epoxy Novalak in its structure offers more desirable properties. Vinyl ester resins have much better toughness and chemical resistance than polyester resins. High heat deflection temperature (HDT) and good adhesion strength are other properties of these resins.

Epoxy vinyl ester resins, usually based on Bisphenol A, have two reactive agents along the chain. These group of vinyl ester resins can be used in most applications in the temperature range of 105-120 °C. While epoxy vinyl ester resins modified with Novolak, they have more reactive locations along the chain and at the same time, with higher density of cross linking after the curing and hardening process, they can be used in more severe corrosion conditions and at higher temperatures (corrosive gas flow up to 240 degrees).

 

 

Vinyl Ester Resin Applications

For all the applications where polyester resin is used, vinyl ester resin can also be used. This resin can be replaced FRP-based unsaturated polyester and metals for corrosion resistance. The most common use of this resin is in the coating of steel and concrete structures resistant to acid and chemicals. The resin is also used to make aircraft, electrical equipment, televisions and antennas, fishing boats, ships, marine vessels, fiberglass, canals and plumbing, chemical tankers and fuel tanks.

One of the most important advantages of vinyl ester resins is its extremely high resistance to acidic materials and environments. This resistance is further enhanced by the addition of glass flake. Vinyl ester resin is also used in water and chemical storage tanks, high-temperature equipment coatings, concrete coatings and water wells. Vinyl ester resin can be combined with quartz, silica, ceramic fillers which should be designed according to the specifications of the project, in order to achieve the best mixing design with the aim of achieving maximum efficiency.

 

The most important features of vinyl ester resin

  • High resistance to acidic substances
  • Waterproof insulation
  • High chemical and thermal resistance in dry weather up to 160 degrees and in humid weather up to 200 degrees
  • Very easy to run
  • Very high tensile strength
  • Adhesiveness to different levels
  • Erosion and damage resistance

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