SK Dyne™ | Pressure-Sensitive Adhesive for Functional Applications
Product Description
Adhesives used in industrial products and in various aspects of daily life must have functionalities that match their intended purpose and use environment. We have a lineup of specialty adhesives with differentiated functions designed using our unique development capabilities. In addition to the products listed below, we also offer a wide variety of pressure-sensitive adhesives to meet your needs and applications.
Usage Examples
SK Dyne™ NT-21 | Electrolyte (High Polarity Solvent) Resistant Pressure-Sensitive Adhesive
The casing of a lithium-ion battery, the most common type of rechargeable battery, is assembled by injecting a non-aqueous electrolyte solution. The tape used for securing the wound portions of the batteries must not peel when immersed in an electrolytic solution. SK Dyne™ NT-21 has been shown to not peel even when subjected to such conditions. This ability makes it suitable for applications that require electrolyte resistance, such as tape used to secure wound elements in lithium-ion batteries. Other features include low adhesion.
Electrolyte Immersion Test (EC:DEC=1:1)
- ●Test conditions
- Peeling speed: 300 mm/min
- Peeling angle: 180°
- Measuring conditions: 23°C/50% RH
- Substrate: 60 μm CPP (unstretched polypropylene) film, 8 μm AL (aluminum) sheet coating amount: 10 μm dry
- Electrolyte solution: [Electrolyte] LiPF6 (lithium hexafluorophosphate), [Solvent] EC (ethylene carbonate)/DEC (diethyl carbonate) = 1/1, [Electrolyte]: 1 mol/L polar solvent solution
- After applying the sample, press it with a 2 kg roller, leave it for 1 hour in the measurement environment, and measure the initial adhesive strength as well as the strength after 7 days immersed in the electrolyte solution. The sample must be allowed to sit for one hour after removing from solution before measurement.
Table of Physical Properties
*Can be scrolled horizontally
| Product no. | Properties | Features | Others | ||
|---|---|---|---|---|---|
| nv (%) | Viscosity (Pa・s) | Adhesive strength | Peelability | ||
| NT-21 | 40 | 5.0 | Low | 〇 | Electrolyte (high polarity solvent) resistant, lithium-ion battery |
SK Dyne™ MD-1 | Medical Adhesive
Pressure-sensitive adhesives used on the skin must have good adhesion to the skin and be able to be removed cleanly. SK Dyne™ MD-1 has been shown to have the same adhesive strength (stick force) to Bakelite, which is commonly used in adhesive strength tests of tapes for medical use, as stainless steel. This feature makes it suitable for medical applications such as surgical tape. Other features include low odor, cold resistance, and more.
Adhesive Strength (Stick Force) Test
- ●Test conditions
- Peeling speed: 300 mm/min Peeling angle: 90° Measuring conditions: 23°C/50% RH
- Substrate: PET Adherends: SUS/Bakelite Coating amount: 32 μm dry
- After affixing the sample, it is pressed with a 2 kg roller and allowed to sit in the measurement environment for 20 minutes before being measured for adhesive strength.
Table of Physical Properties
*Can be scrolled horizontally
| Product no. | Properties | Features | Others | ||||
|---|---|---|---|---|---|---|---|
| nv (%) | Viscosity (Pa・s) | Adhesive strength | Adhesion to olefin | Adhesion to rough surface | Low temperature resistance | ||
| MD-1 | 45 | 2.0 | High | 〇 | 〇 | 〇 | Low odor, low skin irritation, single-component type |
SK Dyne™ 1429DT | Water-Resistant Pressure-Sensitive Adhesive
Potential applications include those requiring water resistance, such as window films. Window films must be water-resistant because the method to apply them involves water and because condensation and wetting are expected after the film is applied. SK Dyne™ 1429DT has been evaluated via a warm water immersion test—no peeling from the adherend or loss of adhesive strength was observed. This feature makes it suitable for water-resistant applications such as solar films and light-blocking films. Other features include adhesive compatibility with non-toluene* and olefin materials.
- *Includes toluene at a concentration of approximately 500 ppm.
Warm Water Immersion Test
- ●Test conditions
- Peeling speed: 300 mm/min Peeling angle: 180° Measuring conditions: 23°C/50% RH
- Substrate: PET Adherend: Glass Coating amount: 25 μm dry
- After applying the sample, press it with a 2 kg roller, leave it for 20 minutes in the measurement environment, and measure the initial adhesive strength as well as the strength after 24 hours immersed in warm water (60°C). The sample must be allowed to sit for one hour after removing from solution before measurement.
Table of Physical Properties
*Can be scrolled horizontally
| Product no. | Properties | Features | Others | ||||
|---|---|---|---|---|---|---|---|
| nv (%) | Viscosity (Pa・s) | Adhesive strength | Adhesion to olefin | Non-toluene | Acid-free | ||
| 1429DT | 30 | 1.5 | High | 〇 | 〇 | 〇 | Suited for initial reapplication, window films |
We also offer a variety of other types of pressure-sensitive adhesives in addition to the products listed above.
We provide suggestions based on customers' requests and intended applications. We look forward to hearing from you.
- Note: The data listed are for reference only and are not standard values.
In addition, there is no guarantee that the listed uses will not infringe on any patents.