Unsaturated polyester resin (UPR) is largest thermosetting polymer group; Because of its excellent mechanical properties, chemical corrosion resistance and process performance, as a polymer material. Then, what is unsaturated polyester resin manufacture? Read on to find out more.

Application fields of unsaturated polyester resins:

This quality allows unsaturated polyester resin to be a very durable and flexible material. Its most common usage is as a reinforcement for composite materials (e.g., in boat hulls, automobile frames and building panels). It is used in crafting super strong yet ultra lightweight hulls for the marine industry Aside from Marine, it finds use in the automotive industry where it is used to create strong anti-corrosion components. It is also used further in the creation of other ornaments; structures e.g. furniture, statues etc..

The process of unsaturated polyester resin manufacturing usually:

Raw material: Mix polyols and dibasic acids in a specific ratio. The locati0n of the resin you want to form will determine what percentage is best. Maleic anhydride stoichiometry with ethylene glycol (1: 1 in most cases)

For example, for the reaction, heating…and so on… Hence you drive the raw materials along with each other via heating in a particular temperature (most of often 150 to 200 degrees Celsius). Unsaturated polyester is a type of polymer that can be produced by an esterification reaction between dibasic acids and polyols. This constant stirring for a uniform reaction.

Add a Catalyst: According to Mason, adding something like peroxide as a catalyst would increase reaction speed marginally. The catalyst in the reaction is required for promoting esterification, it increases the rate of this set and boosts its efficiency.

Cooling Down: The reaction cools down after the above initiated process. To facilitate easier processing in earlier stages, the resin was at lower viscosity and sometimes needed to be thinned with a diluent such as styrene.

Catalyze the altered resin. When this mixture is heated later on, the curing agent tells the resin to continue hardening. Cure is a function of Time and Temperature The curing temperatures and respective effects are determined by time, temperature at which they take place in conjunction with the correct hardener.

These final resins can used for preparing the mold, coating materials etc.

Application and storage : Liquid resin (UPR) to an extent can be stored dry for later processing.

Safety precautions:

Safety measures are strictly adopted during standards producing of unsaturated polyester resin, in order to prevent accidents and danger.Some safety measures include:

1）When touching chemicals protection gloves, goggles and respiratory masks shall be wear as personal protective equipment.This is no laughing matter…make sure to work in a well-ventilated environment so you are not huffing the smoke and fumes as sometimes happen.

2）If using any type of chemicals, use with caution and follow all storage and occupational guidelines.

3）Keep the resin out of contact with your skin and eyes. It is important to wash your hands well…as soon as you touch the resin.

The production of unsaturated polyester resin is a complex process, and the specific reaction conditions must be controlled according to the formula. With the rapid development of new alloys and applied technology, its preparation method needs to be adaptable to more industrial applications.