How was adhesion promoter discovered?

Experimenter: I never thought it could be used like this!?
In the 1940s, researchers discovered that polydimethylsilane (PDMS) could reduce the occurrence of flower and silk patterns in paint, and thus began to study it tirelessly~

During the experiment, it was unexpectedly discovered that organosilane has the bonding potential with the substrate, which ultimately led to the development of modern adhesion promoters。

How strong is the molecular force when two interfaces are attached to a distance of 1nm?

Over 100 atmospheres!

High performance adhesion promoter can enhance van der Waals forces to astonishing strength by strengthening the molecular level adhesion between the coating and substrate!If the distance between the two interfaces is reduced to 1nm, the van der Waals force can reach 9.81-98.1 MPa, approximately 100-1000 atmospheres!!!

 

What is the ‘length paradox’ of solvation chains?

Some things are not the longer the better~
Generally speaking, surfactants such as dispersants carry solvation chains, and long chains help enhance steric hindrance and improve compatibility! But the length should also be moderate!

When the critical length is exceeded, the chain segment may have excessive affinity with the solvent and desorb from the particle surface, or undergo reverse folding and molecular entanglement, leading to the re flocculation of the pigment filler particles.

 

What is the function of controllable radical polymerization technology?

Simply put, it means more efficient performance and more controllable synthesis.
This’ molecular surgery ‘can accurately control the number of anchoring groups and solvation chain length of dispersants towards functional modularization

It is important to obtain a narrow molecular weight distribution (PDI=1.1-1.3), which greatly improves dispersion efficiency and excellent batch stability.

 

Why is it said that leveling agents resemble contemporary “cattle and horses”?

The migration of leveling agents follows the principle of “minimum energy” (lying down)

During the drying process of the coating, the solvent evaporates, creating a Bernhard vortex. In such a turbulent environment, the leveling agent only wants to find a quiet place to lie flat~

After adding the coating, the leveling agent molecules will spontaneously migrate to the “paint film air interface” (take a breath)

Everyone is comparing who can run and get a penalty kick, who can run faster and stay behind, and who can run slower and get eliminated. My mind wants to lie flat, but my footsteps still keep moving~