3M Scotch-Weld DP190 Gray 90-Minute Flame-Resistant Epoxy Adhesive

Product Name

3M Scotch-Weld DP190 Gray 90-Minute Flame-Resistant Epoxy Adhesive

Brief Description

The 3M Scotch-Weld DP190 Gray is a two-part, flexible epoxy adhesive designed for high-performance structural bonding. It features a 1:1 mix ratio, an extended 90-minute work life, and delivers high shear and peel strength. This gray-colored adhesive is formulated to bond a wide variety of similar and dissimilar substrates and is recognized for its flame resistance, meeting UL 94 HB standards.

Popular Applications & Uses

• Bonding plastics to metal, wood to metal, and wood to plastic.
• Used as a semi-flexible potting compound in various industrial applications.
• Ideal for panel and trim bonding, gluing, joining, attaching, and assembling.
• Serving as an alternative to riveting or welding in certain applications.
• Applications requiring high-strength bonds with resistance to environmental conditions.

Industries that Commonly Use It

• Aerospace/Defense (e.g., aircraft interiors, drone components, composite structures)
• Automotive Service/Repair (e.g., automobile manufacturing, appliance repair, fire-resistant components)
• Cabinet & Woodworking (e.g., bonding wood to metal or plastic)
• Construction/ Building Services (e.g., building and home construction, fire-resistant coatings, sealants, structural components, fire doors, wall panels)
• Electrical Services or Products (e.g., fire-resistant cables, wiring harnesses, electrical insulation, potting electronic components)
• Energy (e.g., solar energy, wind energy applications)
• General Manufacturing (e.g., appliance repair, sporting goods, composites, general industrial bonding, protective gear manufacturing)
• Government & Military (e.g., vehicle protection, aerospace applications, electronic systems, weapons manufacturing)
• Industrial Supply
• LED/Electronics (e.g., electronics assembly, potting, circuit boards)
• Marine (e.g., boat assembly)
• Metal Fabrication (e.g., bonding metals)
• Plastic Fabrication (e.g., bonding most plastics)
• Sign & Display (e.g., signage applications)
• Transportation/ Specialty Vehicle (e.g., aircraft, automobile, bicycle, specialty vehicle assembly)

Special and Unique Features

• **Extended Work Life:** Offers a 90-minute work life, providing ample time for adjustment and precise application before curing.
• **Flame-Resistant:** Recognized as meeting UL 94 HB flame resistance standards, enhancing safety in fire-prone environments.
• **Flexible Formulation:** Ideal for bonding dissimilar materials and applications subject to minor movement, impact, shock, vibration, and flexing.
• **Environmental Aging Properties:** Engineered to exhibit good environmental aging properties, contributing to long-term durability and reliable performance.
• **High Strength:** Delivers tough, strong bonds through high shear and peel strength.

Key Properties

• **Adhesive Type:** Two-part epoxy adhesive, structural adhesive.
• **Color:** Gray.
• **Mix Ratio (by volume):** 1:1.
• **Work Life/Open Time:** 60-90 minutes (typically 90 minutes).
• **Time to Handling Strength:** Approximately 8-12 hours.
• **Full Cure Time:** 7-14 days at room temperature.
• **Shear Strength:** High (e.g., 1200 psi to 2500 psi depending on substrate and test).
• **Peel Strength:** High.
• **Viscosity:** Medium viscosity, self-leveling.
• **Hardness (Shore D):** 60.
• **Temperature Resistance:** Good resistance to high temperatures.
• **Chemical Resistance:** Good resistance to solvents and chemicals.
• **Environmental Resistance:** Good resistance to environmental aging and outdoor weathering.

Surface Compatibility

This versatile epoxy adhesive is formulated to bond to a wide range of similar and dissimilar substrates, including but not limited to: metals, ceramics, wood, fiberboard, glass, rubber, and most plastics.

Known backups / known substitutes

• **3M Scotch-Weld Epoxy Adhesive 2216 B/A Gray:** This product shares the same base and accelerator as DP190 Gray but is typically packaged with a 2:3 mix ratio by volume, whereas DP190 is a convenient 1:1 ratio.
• **3M Scotch-Weld DP190 Translucent:** This is another version of the DP190 product, offering similar performance but with a translucent color and some minor differences in properties like Shore D hardness and cure times.
• Other general-purpose structural epoxy adhesives with similar performance characteristics and flame resistance ratings may serve as substitutes depending on specific application requirements.

Comparison Note

The 3M Scotch-Weld DP190 Gray stands out among epoxy adhesives due to its extended 90-minute work life, which provides a significant advantage for applications requiring precise positioning and adjustment time. Its flexible formulation is particularly beneficial for bonding dissimilar materials and in environments where impact, shock, vibration, or flexing are concerns, offering improved resistance compared to many traditional epoxies. Furthermore, its certification for UL 94 HB flame resistance makes it a preferred choice for applications where fire safety is a critical requirement.