Expanding Adhesive - Newport 51-301 - Black Syntactic Foam Sheet - 24" x 36" x 0.05"

Rock West Expanding Foam Adhesive is an expanding syntactic epoxy film adhesive (51-301) produced by Newport / Mitsubishi Chemical. This adhesive is specifically designed as a core splice material, for strengthening the splice area where core joints meet. It is also suitable for inserts and edge member attachments as well as filling available space where bladder molding is difficult.

Recommended processing conditions
51-301 is typically cured at 250°F to 300°F (121°C -149°C) depending on part size and complexity. Low, medium and high pressure molding techniques may be used depending on the desired level of expansion. Recommended cure cycle is 25 psi (172.5 kPa); 4-8°F/min (2.2-4.4°C/min) ramp to 250°F (121°C), hold for 60-90 minutes, cool to <140°F (60°C).

Benefits/features

• Expansion ratio between 2:1 and 3:1
• Does not slump during cure (meets ASTM E-990)
• Uniform expansion and cell size for superior strength
• Humidity and chemically resistant
• Low exotherm
• Co-curable with most 250°F (121°C) epoxy systems

Typical applications

• Aerospace
• Sporting goods
• Marine
• Wind energy
• Industrial manufacturing

Out life

• 30 days at 70°F (21°C)
• Shelf life
• 6 months at 40°F (4°C)
• 12 months at 0°F (-18°C)