Unsaturated polyester resin: A kind of thermosetting resin, the mechanical strength of the polymer is very low, it cannot meet the most of use requirements. The price is not expensive. The core advantage of unsaturated polyester resin is that it can be cured at room temperature, the flexibility makes it suitable for large fiberglass products production at site.

Vinyl ester resin: A kind of thermosetting resin, and it has good performance on corrosion resistance, and it’s suitable for most of the anti-corrosion requirements. Disadvantages: mechanical performance is not good. Vinyl ester resin adhering to the excellent properties of epoxy resin, curing and forming is more excellent, can be dissolved in styrene and acrylic monomers,due to the advantages of both epoxy and unsaturated, its application fields are expanding.

Epoxy resin: A kind of important thermosetting resin, and it has high mechanical strength and good alkali resistance, but not resistant to corrosion. Epoxy resin has good electrical properties and adhesive force, but the brittleness and the performance of business flexibility, so the epoxy cover layer (or solder resist) materials consisting of a protective layer, via multiple bending occurs 'cracking', fault block, finally into patches and stripped down.

 

Polyester Resin

Vinyl Ester Resin

Epoxy Resin

Tensile Strength(MPa)

50~70

60~75

65~80

Elasticity Modulus(MPa)

90~100

100~115

100~150

Elongation Rate

1.5%

1.7%

2~5%

Shear Strength(MPa)

10~20

20~30

30~50

Heat Deflection Temperature()

60~80

70~93

180

Max Permissible Temperature()

60~80

70~93

110~121

Static Pressure Design Pressure

15~35

45~50

63~80

Stiffness Attenuation

40%

20%

10%

Hot Shortness

7%

7%

1~2%