Hysol EA 956 is a two-component adhesive, which has excellent elevated temperature strength. Its room temperature cure capability and low viscosity make it ideal for repair applications, including laminating, injection and coating.
andling
ixing This product requires mixing two components together just prior to application to the parts to be bonded. Complete mixing is necessary. The temperature of the separate components prior to mixing is not critical, but should be close to room temperature (77°F/25°C).
ix Ratio by weight) Part A - 100, Part B - 58
Note: Volume measurement is not recommended for structural applications unless special precautions are taken to assure proper ratios.
ot Life 450 gm mass) >30 minutes Method - ASTM D 2471 in water bath.
pplication
ixing Combine Part A and Part B in the correct ratio and mix thoroughly. THIS IS IMPORTANT! Heat buildup during or after mixing is normal. Do not mix quantities greater than 250 grams as dangerous heat buildup can occur causing uncontrolled decomposition of the mixed adhesive. TOXIC FUMES CAN OCCUR, RESULTING IN PERSONAL INJURY. Mixing smaller quantities will minimize the heat buildup.
pplying Bonding surfaces should be clean, dry and properly prepared. For optimum surface preparation consult the Hysol Surface Preparation Guide. The bonded parts should be held in contact until the adhesive is set. Handling strength for this adhesive will occur as shown below, after which the support tooling or pressure used during cure may be removed. Since full bond strength has not yet been attained, load application should be small at this time.
Handling strength of 500 psi (3.4 MPa) is achieved with:
6 hrs @ 77°F/25°C, or
20 mins @ 140°F/60°C, or
3 mins @ 185°F/85°C, or
1 min @ 250°F/121°C
uring Hysol EA956 may be cured for 5 to 7 days @ 77°F/25°C to achieve normal performance. Accelerated cures up to 200°F/93°C (for small masses only) be used as an alternative. For example, 1 hour @ 200°F/93°C will give complete cure.
leanup It is important to remove excess adhesive from the work area and application equipment before it hardens. Denatured alcohol and many common industrial solvents are suitable for removing uncured adhesive. Consult your supplier's information pertaining to the safe and proper use of solvents.