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What Are The Main Properties Of Unsaturated Polyester Resin-191 Resin?

Jun 17, 2020

Everyone knows that there are many models of unsaturated polyester resins.The main function of each type of resin is also different.Let's let the editor first tell you the performance of 191 unsaturated polyester resin.


191 unsaturated polyester resin is the most common and common resin for all types of glass fiber reinforced plastics at present. 191 resin is composed of phthalic anhydride, maleic anhydride or acid and propylene glycol, and is a polyester synthesized by polycondensation reaction. Unsaturated polyester resin mixed with styrene and dissolved. It is characterized by moderate reactivity and general viscosity. When the relative density is 1.11-1.20, the volume shrinkage during curing is large, but it has good mechanical properties. So it is suitable for manufacturing FRP products.

The properties of 191 unsaturated polyester resin mainly have the following points:

Good heat resistance: Most unsaturated polyester resins have a heat distortion temperature of 50~60℃, some resins with good heat resistance can reach 120℃, and the red thermal expansion coefficient a1 is (130~150)*10-6℃ .

Tensile properties: 191 resin has strong tensile, bending, and compressibility, and is resistant to chemical corrosion and has good dielectric properties.

The above has finished the performance of 191 unsaturated polyester resin, and finally talk about the safety matters of 191 resin:

191 resin should be stored in a cool place, not exposed to the sun. Can not be placed together with alkaline metal substances. Especially can not be stored with cobalt accelerators. At the same time, people should also be very careful not to let it come into contact with everyone's skin and eyes. If you accidentally get it, rinse immediately with clean water or alkaline soapy water