Product Introduction
3M™ Scotch-Weld™ Structural Core Splice Film AF 3028 is a low-density, thermally expanding core splice adhesive designed for high-performance aerospace applications. It excels at filling mismatched areas, reinforcing structures, and splicing honeycomb core materials. During its cure cycle, the film expands to create a strong, reliable bond, effectively joining honeycomb cores even when they have different cell sizes. This easy-to-handle film offers process flexibility with a variable curing temperature range of 250°F (121°C) to 350°F (176°C), achieving full expansion even at slow heat-up rates. With its low-sag properties and minimal volatile loss, AF 3028 provides a dependable solution that maintains high performance from -67°F to 350°F (-55°C to 176°C), ensuring long service life.
3M™ AF 3028 Features:
- Variable Curing Temperature: Cures at temperatures from 250°F (121°C) to 350°F (176°C) to fit various production schedules.
- Expands During Cure: Thermally expands for complete void filling and effective core splicing.
- Low-Density Filler: Resists shrinkage during cure to maintain bond volume and integrity.
- Low Sag Formula: Ideal for precise application on complex or vertical surfaces without dripping or migrating.
3M™ AF 3028 Applications:
- Filling mismatched areas in honeycomb sandwich structures.
- Reinforcing and splicing honeycomb cores of differing cell sizes.
- Aerospace composite manufacturing and structural repairs.
About Prostech
Prostech Philippines is a one-stop solution provider for specialty materials and equipment across electronics manufacturing, from PCBA to final assembly. Our core material and equipment solutions include:
- PCB Assembly Materials
- Cleaning & Degreaser
- Circuit Board Protection
- Thermal Management Solutions
- EMI Shielding
- General Assembly Adhesives
- Elastomeric Materials
- Process Equipment: Potting & Coating Systems, UV/ Heat Curing, Plasma Treatment, Tape placement automation, and cleaning machines
Technical Added Value to customer
Prostech offers customized material and process equipment solutions with engineering support throughout R&D, production process optimization, and performance validation. Our in-house lab located in Alabang, Muntinlupa is equipped to conduct electronics material testing, application simulation, and adhesive validation, helping customers reduce the need for onsite trials and accelerate implementation.
International Supply Chain Advantage
Regional warehouse hubs across Vietnam, Singapore, Malaysia, and the Philippines ensure cross-border reliable supply. In Philippines PEZA-bonded warehouse located at Lima Industrial Park, Batangas enables Prostech to provide responsive, demand-based delivery and significantly shortens standard lead time for Philippines customers.
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| Adhesive Type | Epoxy |
| Factory ISO Certification | No ISO Certification information available |
| Maximum Cure Conditions (Celsius) | 177 °C |
| Maximum Cure Conditions (Fahrenheit) | 350 °F |
| Maximum Operating Temperature (Celsius) | 176 °C |
| Maximum Operating Temperature (Fahrenheit) | 350 °F |
| Minimum Cure Conditions (Celsius) | 121 °C |
| Minimum Cure Conditions (Fahrenheit) | 250 °F |
| Minimum Operating Temperature (Celsius) | -55 °C |
| Minimum Operating Temperature (Fahrenheit) | -67 °F |
| Nominal Adhesive Thickness (Imperial) | 50 mil |
| Nominal Adhesive Thickness (Metric) | 1.27 mm |
| Product Color | Off White |
| Product Form | Roll, Sheet |
| Storage Environment | Freezer Storage |
Dimensions and Classifications
| Overall Length (Imperial) | 24 in, 325 in |
| Overall Length (Metric) | 8.3 m, 610 mm |
| Overall Width (Imperial) | 1 in, 1.25 in, 10 in |
| Overall Width (Metric) | 25.4 mm, 32 mm, 254 mm |
