The difference between the polymer silicone additive surface treatment agent and the traditional surface treatment agent is as follows:
The polymer silicone additive surface treatment agent is the introduction of anchoring groups to ensure its firm adsorption on the surface of solid particles, and multi-position irreversible adsorption, it is difficult to desorb.
② The main chain solvation chain lipophilic group of the polymer silicone additive surface treatment agent has certain compatibility with the resin to ensure that it forms a certain thickness of protective layer on the surface of the solid particles. When the solid particles adsorbed with the surface treatment agent interact with each other due to the van der chemical force, the particles bounce apart due to the space barrier between the adsorption layers, thus realizing the stable dispersion of the solid particles in the non-aqueous medium.
The traditional surface treatment agent is generally a random polymer, its adsorption group is randomly distributed on the polymer long chain, the adsorption form on the surface of solid particles is horizontal, ring and tail, in these three forms, the contribution of horizontal adsorption to space steric hindrance is almost zero, only ring, tail adsorption can form an effective space thickness.
Due to the presence of decumbent adsorption, the effective utilization of the solvation chain is reduced. The anchoring group in the polymer silicone additive surface treatment agent is at the same end of the molecular chain and is closely connected, and there is not enough distance between each other, and the adsorption form between it and the solid particles is multi-bit tail, thus greatly improving the effective utilization of the solvation chain.