August 28, 2024
If you are looking to get a homogenous mixture, you need to make sure you are using the right methods and equipment. We are taking a closer look at the difference between static mixing and dynamic mixing, especially when it comes to combining two-part adhesives.
What Is Static Mixing?
Static mixing uses equipment that remains stationary. To mix adhesives, static mixer nozzles have elements arranged within the tube, but they do not move during application. Instead, they are arranged in such a pattern that the components are divided and combined multiple times as they are pushed down the tube without the need for any moving elements.
While most adhesives can be combined just fine using this type of nozzle, other materials may not be combined well enough with static mixing alone.
What Is Dynamic Mixing?
Dynamic mixing involves the use of motorized equipment in a mixing chamber to mechanically combine two components into a uniform mixture. Dynamic mixing is typically used when the chemicals from the two different components are difficult to combine and a homogeneous mixture is necessary. In particular, it is often used to mix two-part foaming urethanes or silicones, but in general, dynamic mixing is more rare.
Dynamic Mixing Vs. Static Mixing Adhesives
Adhesives like epoxies, acrylics, polyurethanes, and silicones often come in two components. These adhesives only cure correctly when the two parts are properly combined. If the components are not mixed enough, you will have problems.
In the past, dynamic mixing methods were used to combine two-part adhesives, but now this method is mostly a thing of the past. With the invention of static mixer nozzles, most people have turned to this equipment to get the job done.
Compared to some dynamic mixing methods, static mixer nozzles are easy to install and generally inexpensive. They may also have lower energy costs because electricity is not required.
One potential worry with static mixing adhesives is if this method can really create a homogenous mix with more difficult components. Nowadays, most chemists try to design adhesive components to have similar viscosities that can be thoroughly mixed with static nozzles, and most two-part adhesives can be effectively combined with them.
In the instances where static mixing alone is not enough, there are disposable dynamic mix nozzles available. With these nozzles, a motor is attached to the elements inside so that they spin to help combine the two components thoroughly. This nozzle is a step down from traditional dynamic mixing in a chamber but a step up from static nozzles.
Product Recommendations
At Dispensing.com, we have a wide selection of adhesive mixing nozzles to choose from. Below are just a few of our recommendations to help you get started.
- For high viscosity adhesives- Infinity Bond ThickMIX high viscosity mixer
- Bell connection- Infinity Bond 160-632 disposable static mixer
- Bayonet connection- 190-620 static mixer nozzle
- F-Connection Turbo system- Infinity Bond F-Connect Turbo adhesive mixer
- B-Connection Turbo system- B-Connection Turbo static mixer
To ensure you get the right mix and your final product will last, you need to use the right dispensing equipment. If you are still not sure what equipment is best for you, we want to help. Our team is made up of adhesive equipment experts who can offer guidance and advice on your adhesive needs. All you have to do is contact us.
