When mixing two-component adhesive, we usually work with a static mixer, but there are a variety of types of mixer we can choose, if we use the improper mixer, not only we will lose our time, but also lead to bad results, and then it affects the adhesive ability.
Btektechshop.com offers a variety of static mixers, the following article is divided into five ways that will help you find the right static mixer.
1. Depending on the viscosity of the adhesive
- Low viscosity: 0.1~5000 CPS
- Medium viscosity: 5,000 ~ 50,000 CPS
- High viscosity: > 50,000 CPS
The higher the viscosity, the longer the required mixer length and the larger the mixer diameter. In general, the low viscosity adhesive, the mixer diameter selection range is 3-6.3 mm, the medium viscosity adhesive selection range is 5.3-8.7 mm, and the high viscosity adhesive selection range is greater than 9 mm. However, due to the different structures of the internal components of the mixer, the specific choice should also consider the actual application time, temperature and other factors.
2. Depending on the type of adhesive
- Epoxy resin
- Acrylic resin
The number of mixing elements required for epoxy resin is generally 15-24 elements, acrylic resin is 80-20 elements, polyurethane is 24-36 elements, silicone is 20-30 elements, and polysulfide is 24-32 elements. If the viscosity difference of the two-component adhesive is particularly large, the number of mixing elements required in the selection of the mixing tube should be higher. If it is not certain, a small volume experiment can be carried out.
3. Depending to the glue outlet of the mixer
- No need to connectdispensing needles, glue directly
- Need to connect dispensing needles or other equipment
If the glue is directly discharged, you can choose a stepped tip, a straight tip, and a tapered tip; if you need to connect other equipment, it'e better to choose a mixer with a threaded mouth and a Luer lock structure.
4. According onthe type of connected cartridge
When selecting a static mixing tube, the bottom connection type of the mixing tube should be determined according to the connection method with the rubber cartridge. Common types include bayonet type, bell type, thread type, B-type twist lock, F-type, the latter two types.
5. According to the application scope
In different places where glue is used, it is necessary to choose according to different environments. When the temperature is lower in winter, the viscosity of the adhesive increases, and the length of the mixing nozzle is longer than that in summer, or the type of mixing efficiency such as square mixing nozzle or X-Grid mixing nozzle is selected.