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Adhesives Ingredients
The material selection platform
Adhesives Ingredients

EPDM Roofing Tape

Adhesives Formulation

Applicable Type
Applicable Industrial Sectors

Applicable Base Polymer Properties

EPDM rubber is an elastomer characterized by a wide range of applications. EPDM exhibits satisfactory compatibility with fireproof hydraulic fluids, ketones, hot and cold water, and alkali and exhibits unsatisfactory compatibility with most oils, gasoline, kerosene, aromatic and aliphatic hydrocarbons, halogenated solvents, and concentrated acids. The main properties of EPDM are its outstanding heat, ozone, and weather resistance. The resistance to polar substances and steam are also good. It has excellent electrical insulating properties. It has good resistance to ketones, ordinary diluted acids, and alkalines.

Typical Formulation Ingredients

Ingredient
Parts by weight
EPDM (Trilene 77, Lion Elastomers) 
xx 
Styrene-ethylene / propylene (Kraton G-1701, Kraton) 
xx 
Polyisobutylene (Vistanex CP-24, Exxon Chemical) 
xx 
Polyethylene wax 
xx 
Antioxidant 
x 
Carbon black 
xx 
Treated calcium chloride 
xxx 
Silica 
xx 
Tackifiers 
xx 
Lime 
xx 
Oleic acid 
x 
Mineral oil 
xx 
Naphtha 
xxx 
VM&P naphtha 
xxx 
(Source: US Patent 6,291,571) 
 

Typical Properties

Properties
VOC content, g/l 
xxx 
Solids content, % 
xxxx 
Press-flow viscosity, seconds 
xx 
Sag at 25°C, inches 
xxxx 
Sag at 70°C, inches 
xxxx 
Flexibility at -30°C 
xxxx 
Adhesion to EPDM 
xxxxxxxxx 
Shrinkage, % 
xxxx 

Processing

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Resulting Properties

The formulation provides a lap edge sealant composition having a high solids content, a low VOC content of less than 250 g/l, and which exhibits no more than about 35% shrinkage upon curing. By shrinkage, it is meant the decrease in volume of the sealant after curing. The sealant composition provides excellent adhesion to a variety of roofing materials such as EPDM. The tape is generally applied as a dry, rope sealant and pressed into place by hand.

Tips and Tricks

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