Acid Resistant Epoxy Adhesives

Typical Formulation Ingredients

Phase

Ingredient

Parts by weight

Part A

DGEBA Epoxy resin (e.g., Epi-Rez 510)

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Part B

Accelerated aliphatic amine (e.g., Epi-Cure 874)

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Part B

Petroleum extender

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Part B

Coal tar extender

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Part B

Accelerated aromatic amine (e.g., Epi-Cure 8494)

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Typical Properties

Properties

Weight gain, %, after immersion in 33% H2SO4 for 2 weeks at 65°C

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Processing

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Resulting Properties

The above table presents H2SO4 acid resistance data for epoxy adhesive formulations consisting of accelerated aliphatic amine and accelerated aromatic amines. Generally a weight gain of less than 4% is indicative of moderate chemical resistance. Aliphatic and aromatic amines as well as polymercaptan curing agents are often used in bonding reinforced plastic pipe in the chemical industry. The combination of a high degree of chemical resistance along with rapid, on-site cure makes these adhesive systems especially valuable.

Tips and Tricks

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Acid Resistant Epoxy Adhesives

Applicable Base Polymer Properties

Typical Formulation Ingredients

Typical Properties

Processing

Resulting Properties

Tips and Tricks