Knowde Enhanced TDS
Identification & Functionality
- Carrier
- Chemical Family
- Technologies
Features & Benefits
- Ready-to-Use Product Features
- Specific Features
Solvent-based
Applications & Uses
- Markets
- Applications
Si-PSA
- Application Details
DEHESIVE® PSA 850 R can be used for coating of several film-substrates such as Polyester, Polyamide, Polyimide and others substrates for manufacture of different silicone pressure sensitive adhesive tapes and other articles.
Processing
- DEHESIVE® PSA 850 R can be diluted with aliphatic or aromatic solvent (e.g. toluene, white spirit, naphtha). It is typically blended with addition curing silicone PSA system (e.g. DEHESIVE® PSA 765).
- For an optimum balance of surface tack, adhesion strength and cohesive strength it is necessary to cure the coated DEHESIVE® PSA 850 R for 1 – 2 min. at 140 – 150°C by using additing DEHESIVE® 765 and catalyst C05 or PT 5.
- It is recommended to remove the solvent before curing process at 80 - 90 °C for ~0.5 min. Higher temperature can cause incorporation of the solvent into the adhesive film, which can impair the adhesive properties.
- For tape applications DEHESIVE® PSA 850 R can be formulated with a peroxide-crosslinker e.g. Bis-(2,4-dichlorobenzoyl peroxide, which is added in a concentration of 0.5 - 3.0 wt.%. With higher peroxide levels the crosslinking density and cohesion strength can be increased, while adhesion strength is lowered.
- For an optimum balance of surface tack, adhesion strength and cohesive strength it is necessary to cure the coated DEHESIVE® PSA 850 R for 2 - 5 min. at 140 - 150°C by using Bis-(2,4-dichlorobenzoylperoxide and at 170 - 200 °C in case of Dibenzoylperoxide is used.
- It is recommended to remove the solvent before curing process at 80 - 90 °C for 2 - 4 min. Higher temperature can cause premature decomposition of the peroxide-crosslinker and incorporation of the solvent into the adhesive-film, which can impair the adhesive properties.
Properties
- Typical Properties
- Properties
- Excellent surface tack
- High adhesion levels
- High flexibility
- Excellent thermal stability
- Good resistance to moisture, weathering and aging
| Value | Units | Test Method / Conditions | |
| Active Agent Content | 62 | % | — |
| Density | approx. 1 | g/cm³ | — |
| Dynamic Viscosity | approx. 60000 | mPa·s | — |
| Flash Point | 6 | °C | DIN 51755 |
| Ignition Temperature | 535 | °C | DIN 51794 |
Packaging & Availability
- Country Availability
- Regional Availability