LOCTITE® HHD 3542™ is a reactive polyurethane hot melt adhesive designed for robotic dispensing. It provides a long open time, good initial strength after solidification, and structural durability through secondary moisture cure. The fully cured adhesive does not remelt.
| Property | Value |
|---|---|
| Specific Gravity (25°C) | 1.1 |
| Viscosity @ 100°C (mPa.s) | 3,500 – 7,500 |
| Open Time @ 25°C (1mm bead) | < 4 min |
| Application Temperature (°C) | 90 – 110 |
| Property | Value |
|---|---|
| Glass Transition Temperature (°C) | -39 |
| Coefficient of Thermal Expansion (Pre Tg) | 130 x 10⁻⁶ K⁻¹ |
| Coefficient of Thermal Expansion (Post Tg) | 340 x 10⁻⁶ K⁻¹ |
| Hardness (Shore D) | 30 |
| Thermal Conductivity (W/m.K) | 0.21 |
| Elongation at Break (%) | 860 |
| Tensile Modulus (N/mm²) | 91 (13,225 psi) |
| Tensile Strength (N/mm²) | > 8 (> 1,225 psi) |
| Property | Value |
|---|---|
| Dielectric Constant @ 1,000 kHz | 3.48 |
| Substrate | Strength (N/mm²) | Strength (psi) |
|---|---|---|
| Aluminum (anodized) | 7.2 | 1,045 |
| PC/ABS | 4.8 | 695 |
| Substrate | Strength (N/mm²) | Strength (psi) |
|---|---|---|
| Aluminum (anodized) | 4.8 | 695 |
| PC/ABS | 5.8 | 840 |
| Test Condition | Strength (N/mm²) | Strength (psi) |
|---|---|---|
| 7 days @ 85°C / 85% RH | 3.9 | 570 |
| After Thermal Cycling (27 cycles) | 7.2 | 1,040 |
| After Heat Shock (20 cycles) | 6.0 | 865 |
| Test Condition | Strength (N/mm²) | Strength (psi) |
|---|---|---|
| 7 days @ 85°C / 85% RH | 4.5 | 800 |
| After Thermal Cycling | 6.4 | 935 |
| After Heat Shock | 5.3 | 775 |
| Environment | Temperature (°C) | 500 h | 1000 h |
|---|---|---|---|
| Air | 87 | 150 | 150 |
| Motor Oil | 87 | 115 | 110 |
| Isopropanol | 22 | 90 | 85 |
| Water | 22 | 115 | 150 |
| Water/Glycol | 87 | 130 | 140 |
Stronger Bonding. Cleaner Process. Reliable Performance. If you are looking for an adhesive that combines high adhesion strength, flexibility, and electronic safety, 3320-80 is the
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As the year draws to a close and the Christmas season arrives, Avantek Viet Nam would like to extend our warmest Christmas greetings to all our valued customers, partners, and friends.
Avantek Viet Nam is a dynamic MRO, direct materials and equipment supplier that brings advanced technological solutions to maximize satisfaction of customers.
We are expert in import and export of adhesives, accessories and equipment in both domestic and cosmetic industrial fields, production and technology research and development.
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