What is polyester resin?-Jiangsu Baiside New Materials Co., Ltd. — a manufacturer specializing in polyester resins for thermosetting powder coatings.

What is polyester resin?

Release Date:

2021-12-06

Polyester resins are a class of high‑molecular‑weight polymers obtained through the polycondensation of diols with dicarboxylic acids, or of polyols with polycarboxylic acids. Polyester resins are classified into saturated polyester resins and unsaturated polyester resins. Unsaturated polyester adhesives consist primarily of unsaturated polyester resin, pigments and fillers, and various additives such as initiators. These adhesives exhibit low viscosity, excellent wettability, and good processability; after curing, they form films that are hard, highly transparent, and brightly glossy. They can cure rapidly at room temperature under pressure, possess good heat resistance, and offer superior electrical properties. However, their drawbacks include significant shrinkage, relatively low adhesive toughness, and poor resistance to chemical media and water, which limits their use to non‑structural applications. They are mainly employed for bonding fiberglass‑reinforced plastics and rigid plastics.

Polyester resins are a class of high-molecular-weight compounds obtained through the polycondensation of diols with dicarboxylic acids, or of polyols with polycarboxylic acids.

Polyester resins are classified into saturated polyester resins and unsaturated polyester resins. Unsaturated polyester adhesives are primarily composed of unsaturated polyester resin, pigments and fillers, initiators, and other additives. These adhesives exhibit low viscosity, excellent wettability, and good processability; the cured adhesive layer boasts high hardness, superior transparency, and high gloss. They can cure rapidly at room temperature under pressure, demonstrate good heat resistance, and offer outstanding electrical properties.

Its drawbacks include a high shrinkage rate, relatively low adhesive toughness, and poor resistance to chemical media and water; it is therefore used as a non-structural adhesive. It is primarily employed for bonding fiberglass-reinforced plastics, rigid plastics, concrete, and for sealing electrical enclosures, among other applications.

What is the difference between epoxy resin and polyester?

What is the difference between polyester and resin?

What is the difference between epoxy resin and polyester?

What is the difference between polyester and resin?