Epoxy resins

Guichon manufactures valves specially adapted to the production of Epoxy resins :

Ball and plug valve, Piston valve, Tank bottom valve, Injection valve

Lift type plug valve
Type : 301

DN 1/2" to 4" Class 150 to 1500 Lbs
Fully jacketed
– AISI 321 stainless steel
Injection piston valve
Type : 609C

DN 1" Class 2500 Lbs
– piston type injection valve
– fully jacketed

In-line piston valve
Type : 553

DN 8" Class 2500 Lbs
– Heating jacket
– Electric actuato
– 316L Stainless steel

Construction

  • Construction materials: Carbon Steel (CS), Stainless Steel (SS), Duplex & Super Duplex, Titanium, Zirconium, Uranus® B6, Tantalum, Nickel, Hastelloy®, Monel
  • Construction methods: Fabricated (Welded), Cast, Solid

Uses

  • Service conditions: High pressure, High temperature, Low temperature, Abrasion, Corrosion, High viscosity, Vacuum, Reliability, Low acoustic signature, Dead space free
  • Types of fluids: Liquids, Liquids with solid particles, Gas, Powder and powdery media, High viscosity fluids

FAQ - Epoxy resins

Epoxy resins – Uses of Epoxy resins :

Epoxy resins are thermosetting polymers containing epoxide groups.Applications for epoxy resins are extensive: adhesives, bonding, construction materials (flooring, paving, and aggregates), composites, laminates, coatings and molding.

Posted in: FAQ - Epoxy resins

Epoxy resins – Manufacturing process of Epoxy resins :

Most common epoxy resins are produced from a reaction between epichlorohydrin (ECH) and bisphenol-A (BPA), though the latter may be replaced by other raw materials (such as aliphatic glycols, phenol and o-cresol novolacs) to produce specialty resins.
The epoxy resins can be obtained in either liquid or solid states. The two processes are similar. Firstly ECH and BPA are charged into a reactor. A solution of 20-40% caustic soda is added to the reaction vessel as the solution is brought to the boiling point. After the evaporation of unreacted ECH, the two phases are separated by adding an inert solvent such as methylisobutylketone (MIBK). The resin is then washed with water and the solvent is removed by vacuum distillation.The producers will add the specific additivesto create a formula that lend special properties such as flexibility, viscosity, color, adhesiveness, and fastercuring, depending on a particular application.

In order to convert epoxy resins into a hard, infusible, and rigid material, it is necessary to cure the resin with hardener. Epoxy resins can cure at practically any temperature from 5-150oC depending on the choice of curing agent. Primary and secondary amines are widely used to cure epoxy resins.

Epoxy resin manufacturing process with flow chart

Posted in: FAQ - Epoxy resins