Unsaturated Polyester Resin Plant
Unsaturated Polyester Resin Unsaturated polyester resins are the most commonly used thermoset resins in the world. More than 2 million tonnes of unsaturated polyester resins are utilised globally for the manufacture of a wide assortment of products, including sanitary-ware, pipes, tanks, gratings and high performance components for the marine and automotive industry. Unsaturated polyester resins are produced by chemical reaction of saturated and unsaturated di-carboxylic acids with alcohols. Unsaturated polyester resins form highly durable structures and coatings when they are cross-linked with a vinyl reactive monomer, most commonly styrene. The properties of the cross-linked unsaturated polyester resins depend on the types of acids and glycols used and their relative proportions.
Unsaturated polyester resins are further classified into the following categories:
Ortho-phthalic polyesters – resins made from ortho-phthalic anhydride are generally cheaper than the other two classes of unsaturated polyester resins. They are usually used to manufacture general purpose composite laminates where only moderate structural properties are required.
Iso-phthalic polyesters – resins made from Iso-phthalic acid. These resins are much more structurally competent than the ortho-phthalic resins. They also have superior corrosion resistance and are used for more demanding applications
Tere-phthalic polyesters – Tere-phthalate resins are made from tere-phthalic acid. These resins are currently made in small volumes and are considered a specialty resin. Although they tend to have better thermal and chemical resistance than iso-phthalic resins they are difficult to manufacture.
Propylene glycol is the predominant alcohol used in producing the various types of unsaturated polyester resins. Other alcohols like neo-pentyl glycol (NPG), di-ethylene glycol (DEG) and ethylene glycol (EG) are also used used in the production of unsaturated polyester resins. Each of these alcohols contributes to the final polymer characteristics, which includes heat distortion temperature (HDT), physical strength, water uptake and weather resistance.
Their versatility in use allows unsaturated polyester resins to be used in a myriad of composite applications. Composite parts can be made at temperatures as low as 15°C to as high as 150°C depending on the processing requirement of the application.
Application
- 1). Resin: alkyd resin,epoxy resin,phenolic resin,acrylic resin,unsaturated polyster resin,polymer resin.....
- 2). Glue/ Adhesive:
- Hot melt glue/adhesive,white glue,silicon glue,PVC glue,PVA,PU glue....
- 3). Others: Paint,pigment,other latex,emulsion and liquid glue and adhesive.
Advantage and specification:
- 1.Material: a) kettle and cover: SUS 304 or SUS 316; b) jacket: SS304 or carton steel
- 2.Heating way: Electric heating, oil heating, steam heating or firing heating. optional.
- 3. Structure type: Outer coil heating reactor, Inner coil heating reactor, Jacket heating reactor.
Structure and Features:
Reactor consists of the reactor body, tank cover, jacket, agitator, transmission, shaft seal device and supporting.