Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Product Type
- Technologies
- Product Families
Features & Benefits
- Ready-to-Use Product Features
- Product Benefits
- High impact and shock resistance.
- Good gap filling capabilities.
- High temperature resistance.
- Excellent adhesion to a variety of surfaces.
- Consistent rate of cure in 60º to 100ºF.
- Consistent bond strength.
- Eliminates need for mechanical clips.
- Requires minimal clamping time.
- Room temperature cure, eliminates high cost of energy needed for heat cured material.
Applications & Uses
- Markets
- Cure Method
- Directions for Use
- For best performance bond surfaces should be clean and free from grease.
- Activator 59 or 56 should be applied to one of the bond surfaces and the adhesive to the other surface. Parts should be assembled within two hours. Minimizing the on-part time of the activator maximizes the consistency of performance.
- Where bond gaps are large (up to a maximum of 0.5 mm), or faster cure speed is required, Activator 59 or 56 should be applied to both surfaces. Parts should be assembled immediately.
- Excess adhesive can be wiped away with organic solvent.
- Bond should be held clamped until adhesive has fixtured.
- Product should be allowed to develop full strength before subjecting to any service loads (typically 24 to 72 hours after assembly, depending on bond gap, materials and ambient conditions).
Properties
- Physical Form
- Typical Curing Performance
ReAct 761 is designed to be used with Activator and cured at room temperature. Cure characteristics are measured by determining fixture time (handling time) and speed of cure.
Fixture Time
Fixture time is defined as the time to develop a shear strength of 0.1 N/mm². Fixture Time, G/B steel, with Activator on 1 side.
Gap, mm Activator Fixture Time, minutes 0 Activator 59 ≤ 3 0.05 Activator 59 ≤ 3 0.20 Activator 59 ≤ 15 0.50 Activator 59 ≤ 30 0 Activator 63 ≤ 2 0 Activator 56 ≤ 2 Cure Speed vs. Substrate
The graph below shows the shear strength developed with time on steel lap-shear specimens, tested according to ASTM D1002 (Activator is applied to one surface).
- Typical Cured Performance
Shear Strength
Tested at RT according to ASTM D1002
Substrate Cure Type Cure Conditions Value (psi) G/B Steel Activator 56 24h at 22ºC 2000-3000 G/B Steel Activator 59 24h at 22ºC 2000-3000 G/B Steel Activator 63 24h at 22ºC 2500-3500 G/B Steel Heat Cure 30m at 150ºC ≥ 4000 G/B Steel Heat Cure 10m at 150ºC ≥ 3000 G/B Steel Heat Cure 30m at 120ºC ≥ 2500 Stainless Steel Activator 56 24h at 22ºC 1000-2000 - Typical Environmental Resistance
Lap shear Strength, ASTM D1002. Cured for 48 hours at 22ºC, Steel, with Activator 59 on 1 side.
Hot Strength
Tested at temperature
Heat Aging
Aged 1000 hours at the temperature indicated, tested at 22ºC.
Temperature, ºC % of Initial Strength
90 140 120 140 150 140 200 40 Chemical/Solvent Resistance
Aged for 720 hours at 87ºC in chemical/solvent indicated. Tested at 22ºC.
Chemical/Solvent % of Initial Strength
Air reference 136 Water/glycol 50/50 120 Motor oil 100 Automatic Transmission Fluid 84 Brake Fluid 33
Regulatory & Compliance
- Certifications & Compliance
Technical Details & Test Data
- General Information
This product is not recommended for use in pure oxygen and/or oxygen rich systems and should not be selected as a sealant for chlorine or other strong oxidizing materials. For safe handling information on this product, consult the Safety Data Sheet (SDS). Where aqueous washing systems are used to clean the surfaces before bonding, it is important to check for compatibility of the washing solution with the adhesive. In some case, these aqueous washes can affect the cure and performance of the adhesive. This product is not normally recommended for use on plastics (particularly thermoplastic materials where stress cracking of the plastic could result). Users are recommended to confirm compatibility of the product with such substrates.
Storage & Handling
- Storage
ReAct® 761 should be stored in a cool, dry location in unopened containers at a temperature between 45ºF to 85ºF (7ºC to 29ºC) unless otherwise labeled. Optimal storage is at the lower half of this temperature range. To prevent contamination of unused material, do not return any material to its original container.