Typical Formulation Ingredients
Phase
Ingredient
Parts by weight
A
Polybutadiene resin (R45HT, Cray Valley)
A
Silica (HiSil 230, PPG Silica Products)
A
Magnesium oxide (Maglite D, Hallstar)
A
Antioxidant (Resin D, Emerald Performance Materials)
A
Co-curing agent (Saret SR633)
A
2,4-Dichlorobenzoyl peroxide (CADOX Ts 50S)
Typical Properties
Lap shear strength glass to CRS, psi
Lap shear strength glass to E-coat, psi
Resulting Properties
1K, Heat Cured Polybutadiene Sealant (100°C Cure) is for a general purpose heat cured sealant based on polybutadiene resin. Using polybutadiene will provide better hydrolytic stability than other conventional elastomers. Sartomer 633 is a metallic diacrylate coagent, which when added to peroxide-containing sealant formulations co-cures to provide the necessary properties for good sealant performance, especially adhesion. Heat age values (130°C/two weeks) increase over the RT tests.
The source of this formulation is Cray Valley.