SMIDA planetary centrifugal mixer: upgrade plan for single component polyurethane mixing effect

Polyurethane is widely used in the fields of adhesives, sealants, coatings, etc. However, its high viscosity, tendency to contain bubbles, and easy settling of components make it difficult for traditional mixing equipment to break through the bottleneck of "uneven mixing" - local curing and residual bubbles are prone to occur after mixing, resulting in a decrease in bonding strength and a product qualification rate of less than 80%. ​

1、 Single component polyurethane exclusive mixing: from "unevenness" to "ultimate uniformity"
Based on the material characteristics of single component polyurethane, SMIDA planetary centrifugal mixer achieves a qualitative leap in mixing effect through precise technical design, and the comparison before and after is clear at a glance:
​
Comparing dimensions           Traditional mixing equipment                                SMIDA planetary centrifugal mixer
Uniformity                               80% -85%, local component sedimentation         ≥ 99.5%, with evenly dispersed components

                                                                                                                               throughout the entire tank
Residual bubbles                     Visible bubbles on the surface and inside            No visible bubbles, bubble removal rate ≥ 99% 

                                                (diameter 0.1-0.5mm)
Consistency of solidification    There is a large difference in local curing            Uniform curing speed, increased bonding  

                                                 speed, and the bonding surface is prone             strength by 30% 

                                                 to cracking
Mixing time                              30-60 minutes                                                      5-15 minutes, efficiency increased by more than 3 times
​
The actual effect can be verified through sample testing: provide a comparison of polyurethane samples before and after mixing. ​

2、 Core design: Key advantages of adapting to single component polyurethane
Flexible mixing control: supports 0-2000rpm stepless speed regulation. For high viscosity polyurethane (200000-10000000cP), the "low-speed revolution extrusion+medium speed rotation shear" mode is adopted to avoid material heating and performance degradation caused by high-speed mixing. ​
Vacuum defoaming integrated: optional vacuum system, real-time vacuum pumping (vacuum degree ≤ 0.2kPa) during the stirring process, synchronously removing dissolved air in polyurethane and bubbles generated by stirring, solving the problem of low efficiency and poor effect of traditional "defoaming after stirring". ​
Mixing tank design: inclined self rotation trajectory, reducing the residual amount of polyurethane on the tank wall (residual rate ≤ 0.5%), reducing material waste and cleaning difficulty. ​

3、 Industry test: Application effect of single component polyurethane
Adhesive field: After mixing, polyurethane adhesive has no local missing glue or bubbles after application. The shear strength of metal plastic bonding has increased from 12MPa to 15.6MPa, and the qualification rate has increased from 78% to 99%; ​
Sealing adhesive field: Polyurethane adhesive used for door and window sealing, with a curing shrinkage rate reduced from 3% to 1.2% after mixing, no cracking or water leakage problems, and an extended weather resistance test compliance time of 2 years; ​
In the field of coatings, after mixing polyurethane coatings, the uniformity error of the coating thickness is reduced from ± 0.05mm to ± 0.01mm, the surface glossiness is improved by 20%, and there are no sagging or pinhole defects. ​

Get exclusive testing opportunities immediately
If you are troubled by the mixing problem of single component polyurethane, please contact SMIDA now to enjoy: