Uniform and foam free mixing scheme for single component polyurethane

Single component polyurethane is widely used in sealing and bonding scenarios due to its no need for proportioning and convenient construction. However, its high viscosity makes traditional mixing difficult - bubble wrapping is difficult to discharge, uneven pigment dispersion causes color difference, and it is prone to cracking and bonding failure after curing. It also affects product competitiveness due to its mottled appearance. ​
1、 Single component polyurethane mixing: significant differences in effectiveness are visible
The SMIDA planetary centrifugal mixer achieves three core breakthroughs in addressing the viscosity and curing characteristics of single component polyurethane through the synergistic technology of "rotational defoaming+rotational mixing"
After traditional mixing, there are surface bubbles and dense internal bubbles, which form honeycomb like pores after solidification; Pigments aggregate into color blocks, and the color depth of products in the same batch varies; Uneven mixing of high viscosity materials can lead to significant differences in shrinkage rates after curing, making them prone to cracking. ​
After SMIDA stirring: there are no visible bubbles throughout the process, and the structure is dense after solidification; The pigment is uniformly dispersed throughout the entire area, with strong color consistency and a smooth appearance; The material is uniformly mixed, and the curing shrinkage is stable, greatly improving the adhesion and sealing performance. ​
2、 Core application areas of single component polyurethane
SMIDA mixer is precisely adapted to the mainstream use scenarios of single component polyurethane, solving practical problems in the industry:
1. Building sealing field
Single component polyurethane sealant used for door and window frames and curtain walls, with no bubbles and uniform color after mixing. After curing, it adheres closely to the substrate, improving waterproof and sound insulation performance, and avoiding rainwater leakage and sound insulation failure caused by bubbles. ​
2. Automotive interior field
The polyurethane adhesive for car dashboard and door panels has stable bonding strength after being mixed with SMIDA, without the risk of delamination caused by uneven mixing; The high matching degree between color and interior enhances the refinement of the vehicle's interior. ​