Unsaturated polyester resin

The thermal deformation temperature: 50 ~ 60 ℃

Red heat expansion coefficient alpha 1: (130 ~ 150) x 10-6 ℃

Polyester polycondensation reaction temperature: 190 ~ 220 ℃

Manufacturer (origin) : shenzhen

Product description: unsaturated polyester resin, usually by unsaturated or saturated dibasic acid dibasic acid glycol unsaturated glycol polycondensation of with ester bond of linear polymers and unsaturated double bond...

Unsaturated polyester resin

Unsaturated polyester resin, usually by unsaturated or saturated dibasic acid dibasic acid glycol unsaturated glycol polycondensation of with ester bond of linear polymers and unsaturated double bond. Usually, polyester melt polycondensation reaction was conducted in 190 ~ 220 ℃, until the desired acid value (or viscosity), at the end of the polyester melt condensation reaction, add a certain amount of vinyl monomer, match into sticky liquid, the polymer solution is called unsaturated polyester resin.

Unsaturated polyester resin is a kind of chemical raw materials, used to surface and thicken, curing, when used as a paint, layer upon layer stack, release harmful gases such as styrene curing process.

Unsaturated polyester resin is one of the most commonly used in such thermosetting resin, it is made of saturated dibasic acid, unsaturated dibasic acid and glycol polycondensation of linear polymers, crosslinking monomer or active solvent dilution formation has certain viscosity resin solution, hereinafter referred to as the UP.

The performance characteristics of

1. Good process performance. This is the greatest advantages of unsaturated polyester resin. Can be solidified at room temperature, the pressure molding, flexible process performance, especially suitable for large and manufacturing glass fiber reinforced plastic products. Cured resin good comprehensive performance, mechanical performance index is slightly lower than that of epoxy resin, but better than that of the phenolic resin. Corrosion resistance, electric properties and flame retardancy can meet the requirements by selecting the appropriate type of resin, the resin color shallow, can be made into a transparent products.

2. Many varieties. Many varieties, to adapt to the wide, the price is low. On the downside, short storage period.

Physical properties

Unsaturated polyester resin of relative density at around 1.11 ~ 1.20, curing the volume shrinkage ratio is bigger, some physical properties of cured resin is as follows:

(1) heat resistance. The vast majority of the thermal deformation temperature of the unsaturated polyester resin in 50 ~ 60 ℃, some good resin heat resistance up to 120 ℃. Red heat expansion coefficient alpha 1 (130 ~ 150) x 10-6 ℃.

2 mechanics performance. Unsaturated polyester resin has high tensile, bending and compression strength.

(3) resistance to chemical corrosion. Unsaturated polyester resin water, dilute acid, dilute alkali resistant performance is good, organic solvent resistance is poor, at the same time, chemical corrosion resistance of the resin, depending on its chemical structure and geometry switch can have a big difference.

(4) dielectric properties. Good dielectric properties of unsaturated poly acid resin.