Posted to News on 7th Oct 2026, 13:00
Acid resistant, non-drip epoxy system withstands elevated temperatures
Master Bond EP62-1HTND is a two-component epoxy system formulated for bonding and sealing applications requiring high temperature capability and chemical resistance, particularly to acids.
This system exhibits a non-drip paste consistency with no flow upon mixing, making it suitable for application on vertical or non-horizontal surfaces. It resists a variety of aggressive chemicals, including sulfuric acid, nitric acid, hydrochloric acid, bases, and solvents. It serves as a dependable electrical insulator with a volume resistivity exceeding 1014 ohm-cm at 75degF.
The cured material features a glass transition temperature Tg of 145-155degC and is serviceable across a wide temperature range of -51degC to +232degC. At room temperature, EP62-1HTND exhibits a tensile strength of 10,000-11,000 psi, a tensile modulus of 500,000-550,000 psi, and a tensile lap shear strength of 2,000-2,200 psi on aluminium substrates. Additionally, it exhibits an elongation of 3-5% and a Shore D hardness of 80-90, maintaining structural integrity in demanding aerospace, electronic, and specialty OEM environments.
EP62-1HTND features a mix ratio of 100:5 by weight and offers an open time of 12-24 hours for a 100-gram batch at room temperature. It requires an elevated temperature cure, with primary schedule options of 60-70 minutes at 80-100degC or 20-30 minutes at 125degC. An optimum post cure of 3-5 hours at 100-150degC is recommended to achieve peak performance properties. Packaging options include 1/2 pint, pint, quart, and gallon kits.
