Unsaturated polyester resin, which is a kind of chemical raw material, is often used for thickening and solidifying the surface of the object. When used, it is like painting, stacking layers, and releasing harmful gases such as styrene during the curing process.
The unsaturated polyester resin is generally a linear polymer compound having an ester bond and an unsaturated double bond, which is obtained by polycondensation of an unsaturated dibasic acid diol or a saturated dibasic acid unsaturated diol. Usually, the polyester polycondensation reaction is carried out at 190 to 220 ° C until the desired acid value (or viscosity) is reached. After the polyester condensation reaction is completed, a certain amount of vinyl monomer is added while hot, and the mixture is made viscous. The liquid, such a polymer solution is referred to as an unsaturated polyester resin.
The unsaturated resin complete equipment is mainly produced by the reactor. The main equipments are high-position tank, condenser, fractionation column, water separator, collector, filter, etc. It is also the production of unsaturated polyester resin and phenolic resin. Key equipment for epoxy resin and paint!
Advantages and disadvantages of unsaturated resin:
1. Excellent process performance
This is the biggest advantage of unsaturated polyester resins. It can be cured at room temperature, molded under normal pressure, and has flexible process performance. It is especially suitable for large-scale and on-site manufacturing of FRP products. After curing, the resin has good comprehensive performance, and the mechanical properties are slightly lower than epoxy resin, but better than phenolic resin. Corrosion resistance, electrical properties and flame retardancy can be met by selecting the appropriate grade of resin. The resin is light in color and can be made into a transparent product .
2, many varieties, wide adaptability, low prices.
Disadvantages: Short storage period.
Jin Chang Tai Chemical Machinery Co., Ltd.
Welcome to our website:
Phone: +86-18028192312 0086-18028192312
Mailbox: [email protected]
Thank you very much！