Temporary Bonding Adhesives | Application Scenarios
Application Scenario 1 | Process Illustration
Figure 1. Illustration of a temporary bonding application.
Application Scenario 2 | Application Illustration
Figure 2. Illustration of a temporary bonding application.
Two Debonding Approaches | Material Selection
Hydrolytic Debonding | EN-679
Water-based UV-curable formulation with a water-assisted release process; representative test temperatures: 25°C and 80°C.
Solvent Debonding | EZ-D7B
Non-aqueous UV-curable formulation suitable for solvent-assisted release using NEP or GBL.
EN-679 / EZ-D7B | Technical Specifications
Representative test data for the two temporary bonding grades.
| Property | EN-679 | Hydrolytic | EZ-D7B | Solvent Debonding |
|---|---|---|
| Material and Cure System | ||
| System | Modified acrylic resin / One-component (1K) / Dual UV + thermal cure | Modified acrylic resin / One-component (1K) / Dual UV + thermal cure |
| Characteristics | Solvent-free / Very low volatile content / Fast bonding | Solvent-free / Very low volatile content / Fast bonding |
| Physical and Thermal Properties | ||
| Viscosity | 40 ± 5 Pa·s | 120 ± 10 Pa·s |
| Thixotropic Index | 4.5 ± 0.5 | 6.0 ± 0.5 |
| Shore D Hardness | 89 | 83 |
| 5% Weight-Loss Temperature (Td5) | 350°C | 300°C |
| Glass Transition Temperature (Tg) | 220°C | 180°C |
| Debonding and High-Temperature Reliability | ||
| Hydrolytic Release Time @25°C | 15 min | — |
| Hydrolytic Release Time @80°C | 3 min | — |
| Solvent Debonding Time @25°C (NEP) | — | 5 min |
| Solvent Debonding Time @25°C (GBL) | — | 90 min |
| High-Temperature Storage Reliability | 250°C × 5 h; no bubbles or cracks | 250°C × 2 h; no bubbles or cracks |
Test Methods and Conditions
Viscosity
Anton Paar Viscometer; #T-E Bar @ 50 rpm
Thixotropic Index
ASTM D2196
Shore Hardness
ASTM D2240; TECLOCK Durometer
5% Weight-Loss Temperature (Td5)
TGA (thermogravimetric analysis); source also lists 365 nm LED, 100 mW × 30 s
Glass Transition Temperature (Tg)
TMA; source also lists 365 nm LED, 100 mW × 30 s
Hydrolytic Release Time
25°C / 80°C, GTA method
Solvent Debonding Time
25°C, NEP or GBL, GTA method
High-Temperature Storage Test
Cured stripe specimen: 0.1 mm × 1 cm × 3 cm
Packaging and Storage：30 mL syringes; custom packaging available. Refrigerated storage at 0–5°C is recommended. Refer to the product TDS for storage and warm-up instructions.
Note: The above data are for reference only and do not constitute guaranteed shipping specifications. Actual specifications and test conditions are subject to the latest Technical Data Sheet (TDS) for each grade.
