CCS connector sealing UV adhesive, 8658FPC connector adhesive
DM-8658 is a single component UV curable adhesive, which has the characteristics of high adhesive strength, good flexibility, excellent weather resistance, and shock resistance after curing. Especially suitable for applications in electronic components and FPC connectors, it mainly plays a role in coating, sealing, moisture-proof, waterproof, insulation, and seismic resistance.
Typical use
FPC connector coating and sealing for automobiles and electronic products
Pre curing performance
| Testing items | Testing standards | Detection indicators |
| appearance | Milk white viscous liquid | |
| viscosity@25℃ | GB/T 2794-2013 | 27000cps |
| Thixotropic index | GB/T 2794-2013 | 2.4 |
| proportion | GB/T 13354-1992 | 1.05 |
| Refractive index | ASTM D1747-09(2019) | 1.482 |
LED curing light source band 395nm
Complete solidification energy（3mm） 8000mj/cm2
Table drying time 20s
CCS connector sealing UV adhesive, 8658FPC connector adhesive
Physical properties after curing
The following data were measured after curing with a 395nm wavelength LED light source with a cumulative energy of 8000mj/cm2:：
| Testing items | Testing standards | Detection indicators |
| hardness | GB/T 2411-2008 | 45D |
| Glass transition temperature | ISO 11357-2 | 45℃ |
| Water absorption rate | GB/T 1034-2008 | ＜1.2% |
| Shear strength (PI film PC) | GB/T 7124-2008 | 3Mpa |
| Peel strength (PI film PC) | GB/T 2790-1995 | 40N |
| Curing shrinkage rate | ASTM C1241－2000（2005） | 2% |
| elongation at break | GBT13022－1991 | 200% |
Electrical performance after curing
| Testing items | Testing standards | Detection indicators |
| Dielectric constant（1MHz） | GB/T 1409-2006 | 4.5 |
| Dielectric loss | GB/T 1409-2006 | 0.03 |
| Dielectric strength | GB/T 1408,1-1999 | 22KV/mm |
| Surface resistivity | GB/T 1410-2006 | 5.9×1015Ω |
| Volume resistivity | GB/T 1410-2006 | 8×1012Ω.cm |
matters needing attention
1
Please store away from children. This product is recommended for use in well ventilated areas
2
If it accidentally gets on the skin, please wash it immediately with soap and water.。
3
If it accidentally gets on your eyes, please rinse with plenty of water first and then seek medical attention.。
4
For detailed information, please refer to the MSDS of this product.
| Testing items | Test conditions | Test indicators |
| Thermal Shock | -40℃/85℃/30min，100 cycles, switching within 30 seconds | No abnormalities in function and appearance |
| Electric immersion | 25℃，500h | No abnormalities in function and appearance |
| High temperature storage | 85℃,48h | No abnormalities in function and appearance |
| Double 85 | 85℃，85rh%，1008h | No abnormalities in function and appearance |
| Salt mist | 5%NaCl 168H | No abnormalities in function and appearance |
| Low temperature storage | -40℃，48h | No abnormalities in function and appearance |
| Voltage withstand | 1000V，60s | No abnormalities in function and appearance |
1
The gluing area must be cleaned of oil stains with plasma before gluing can be applied.
2
It is necessary to use a UV lamp with a wavelength of 395nm for irradiation to confirm that the UV light can penetrate the bonding area.
3
The curing speed depends on the intensity of ultraviolet radiation, the distance between the light source and the adhesive layer, and the required curing time.
4
Do not move the bonded material back and forth when exposed to ultraviolet radiation, otherwise it may cause the bonding layer to turn white and the bonding strength to decrease.
5
After use, the lid must be immediately closed. Black rubber hoses must be used for gluing.
Storage conditions
The product is packaged in 55ml, 250ml, 300ml, and 900ml black or amber needle tubes, sealed and stored in a dry and dark place. No glue should be poured back into the packaging to avoid contaminating unused glue. The shelf life is 12 months at 8-28 ℃.