• Item Name: ARALDITE® AV 4738 / HARDENER HV 4739
• Manufacturer: Huntsman
• Technologies: Epoxy & Epoxy Derivatives, 2-component adhesive
• Color: Grey paste
• Cure Type: Ambient temperature, post-curing recommended for optimal performance
• Package Size: Contact to Techniq VN for details
• Shelf Life: Contact to Techniq VN for details
ARALDITE® AV 4738 / HARDENER HV 4739 is a two-component, ambient temperature curing epoxy adhesive in paste form. It provides strong, durable bonds with temperature resistance up to 150°C after post-curing. The adhesive demonstrates excellent chemical resistance, good gap-filling capability, and non-flowing properties for ease of application. It is suitable for bonding metals and reinforced polymer composites, including GRE, GRP, ABS, and SMC. Performance is further enhanced by post-curing, and the product has potential certification for potable water applications.
Structural bonding of metals and reinforced composites (GRE, GRP, SMC, ABS)
Pipe bonding and plumbing applications
Joints requiring high chemical and temperature resistance
Applications requiring gap filling and non-flowing adhesives
Ambient curing with optional post-cure for optimum performance
Surface Pretreatment: Clean surfaces with acetone or other degreasing agents. Avoid low-grade alcohols, gasoline, or paint thinners. For best results, mechanically abrade or chemically etch surfaces, followed by a second degreasing.
Application:
Mix resin and hardener (weight ratio 100:25–27.5).
Apply with spatula to pretreated surfaces and clamp immediately.
Achieves minimum shear strength at 23°C: 1 MPa in 3 hours, 10 MPa in 4 hours.
Post-cure recommended for optimum properties: e.g., 2 hours at 80°C or 1 hour at 120°C.
| Property | Value | Unit | Condition |
|---|---|---|---|
| Mix Ratio | 0.25–0.275 | % (W) | Hardener : Resin |
| Density | ~1.6 | g/cm³ | at 25°C |
| Gel Time | 40–50 | min | at 40°C |
| Glass Transition Temperature (Tg) | 120 | °C | Post-cured |
| Lap Shear Strength | ≥10 | MPa | at 23°C |
| Viscosity | 40–50 | Pa·s | at 25°C |
| Appearance | Grey | Paste | – |
Cured Joint Performance:
Metal-to-metal, plastic-to-plastic, and composite-to-composite joints achieve strong lap shear strengths after ambient cure + post-cure.
Roller peel strength on aluminium: 2.6 N/mm (7 days at 23°C), 4.6 N/mm (+80°C, 1h), 5.6 N/mm (+125°C, 1h).
Good resistance to water immersion, tropical weathering, and various chemicals.
LOCTITE ECCOBOND UF 9000AG-061 is specifically formulated for FCBGA and Cu pillar flip chip packaging, ensuring robust solder joint encapsulation under extreme electrothermal cycling from -65 °C to 150 °C. Its superior capillary flow also optimizes throughput in automated assembly lines for high-density ICs.
BERGQUIST microTIM mTIM 1028 is purpose built for riding cage assemblies in servers, switches, and routers, interfacing with electroless nickel plated copper or aluminum heat sinks. It ensures stable operation in high power transceiver modules while also extending applicability to liquid cooling components, heat pipes, and fin based dissipative structures.
LOCTITE® ABLESTIK NCA 3218 is specifically formulated for ADAS optical modules, ensuring secure bonding in lens barrel to housing and lens housing to circuit board interfaces where dimensional accuracy and dielectric integrity are non negotiable.
Loctite® 3296, a dual cure (UV & thermal) adhesive, is engineered for active alignment assembly of ADAS cameras and LiDAR modules. Its optimized bonding to aluminum and FR4 substrates ensures secure fixation of optical components while enabling nanometer level alignment critical for high resolution imaging.
Techniq Vietnam provides end-to-end materials and process solutions, integrating world-class technologies in adhesives, soldering, and thermal management.
Through partnerships with leading global brands, we deliver high-value materials, expert consulting, and optimized supply chains ensuring timely delivery, efficiency, and sustainable growth for our clients.
At Techniq, our mission is to connect cutting-edge materials, processes, and equipment with customer needs, enabling efficiency, reliability, and long-term value creation.
Tel: +84 88 990 19 29
Copyright © TECHNIQ VIETNAM
Leave your information or connect via Hotline, and our expert team will reach out immediately to provide professional consultation and customized solutions.
Email: info@techniq.vn
Our Technical Support Team is on hand from 8:30 AM to 5:30 PM (GMT+7).
For requests outside these hours, please submit your request form and we will respond at the earliest opportunity.