Introduction of Cycloaliphatic Epoxy Resins

Cycloaliphatic epoxy resins usually refer to a class of epoxy resins with a ring-like carbon chain structure in the molecular. In industry, cycloaliphatic olefin compounds containing two double bonds are generally used to form cycloaliphatic epoxy resins through the oxidation reation.

The cycloaliphatic epoxy resins react with the curing agent to produce polymers with a cross-linked network structure. Since the epoxy groups of cycloaliphatic epoxy resins are directly attached to the rings, the reaction activity is much lower than bisphenol-A epoxy resins, so they are mostly cured by heating with anhydride curing agents. There is no hydroxyl group in the structure of cycloaliphatic epoxy resin, and the reaction speed can be improved by using accelerator.

Characteristics of cycloaliphatic epoxy resins

Good thermal stability

The outstanding advantage of cycloaliphatic epoxy resins are good thermal stability. Since the specialty epoxy resins of cycloaliphatic epoxy resin are directly connected to the cycloaliphatic rings, the cross-link density increases after curing, show a tight rigid structure, and the heat resistance temperature of the cured products is very high.

Excellent weather resistance

Due to the existence of benzene rings in the structure , poor weatherability is a common defect of bisphenol-A epoxy resins. In contrast, the cycloaliphatic epoxy resins have a stable cycloaliphatic structure instead of benzene ring, so cycloaliphatic epoxy resins have better weather resistance and anti-yellowing performance.

Great dielectric properties

The synthesis of cycloaliphatic epoxy resin does not use epichlorohydrin and does not contain chloride ions, sodium ions and other by-products, so the cycloaliphatic epoxy resins have better dielectric properties than bisphenol-A epoxy resins.

Low viscosity

The low viscosity of cycloaliphatic epoxy resins make, them convenient for pouring and potting operation and good processability. The cycloaliphatic epoxy resins can be used as epoxy diluent. Because it has excellent heat resistance stability, it can avoid the problem that the heat deflection temperature decreases under high temperature of common diluent products, which causes the heat resistance temperature of cured products to decrease.

Types of Cycloaliphatic Epoxy Resins

Cas No.2386-87-0: 3 4 epoxycyclohexylmethyl 3 4 epoxycyclohexanecarboxylate

Cas No.3130-19-6: TTA26: Bis (3,4-Epoxycyclohexylmethyl) Adipate, 3130 19 6

Cas No. 244772-00-7:TTA3150: Poly[(2-oxiranyl)-1,2-cyclohexanediol] -2-ethyl-2-(hydroxymethyl)-1,3-propanediol Ether

Cas No. 244772-00-7/2386-87-0: epoxy resin mixture

Cas No. 81-21-0:  TTA27: 1,2:5,6-Diepoxyhexahydro-4,7-methanoindan, 81-21-0

Cas No. 2886-89-7: TTA28: Tetrahydroindene Diepoxide, tetrahydroindene

Cas No. 106-86-5: TTA11: 4-Vinyl-1-Cyclohexene 1,2-Epoxide, 106-86-5

Cas No. 82428 30 6:TTA15: 3 4 epoxycyclohexylmethyl methacrylate

Cas No.106-87-6: epoxy amine wholesale, TTA22: 1,2-Epoxy-4-epoxyethylcyclohexane

Application of cycloaliphatic epoxy resin

Electronic potting materials

With good dielectricity and weather resistance, cycloaliphatic epoxy resin can be used as potting materials for outdoor high-voltage substation devices, it has the characteristics of abrasion resistance, good impact strength and high heat deflection temperature.

Composite materials

The cycloaliphatic epoxy resin has low viscosity, high heat deflection temperature and good weather resistance, and can be widely used in mold materials and high temperature resistant composites.

Coatings

The great temperature-resistance and weather resistance of cycloaliphatic epoxy resin can make the top coat keep the color lasting without yellowing. The cycloaliphatic epoxy resin has high hardness, abrasion resistance, good impact resistance, chemical corrosion resistance and good adhesion, which can be applied in the print circuit board.

Adhesive

Cycloaliphatic epoxy resin has good adhesion, and the bonding strength increases with the increase of curing temperature.