Silicone Adjuvant Manufacturer introduced the difference between silicone adjuvant surface treatment agent and a traditional surface treatment agent in:
①The surface treatment agent of silicone additives is the introduction of anchoring groups, which ensures its firm adsorption on the surface of solid particles, and multi-site irreversible adsorption, which is difficult to desorb.
②The main chain solvated chain lipophilic group of the silicone auxiliary agent surface treatment agent has certain compatibility with the resin to ensure that it forms a certain thickness of a protective layer on the surface of the solid particles so that the solid particles with the surface treatment agent can be adsorbed Due to the interaction of the van der force, the particles bounce apart due to the space barrier between the adsorption layers, so as to realize the stable dispersion of solid particles in the non-aqueous medium. The traditional surface treatment agents are generally random polymers, and their adsorption groups are randomly distributed on the long polymer chains. The adsorption forms on the surface of solid particles are horizontal, ring, and tail. Among these three forms, horizontal The contribution of shape adsorption to the steric hindrance of space is almost zero, and only ring-shaped and tail-shaped adsorption can form an effective space thickness.
③Because of the horizontal adsorption, the effective utilization rate of the solvation chain is reduced. However, the anchoring group in the surface treatment agent of the silicone additive is at the same end of the molecular chain and is tightly connected. There is not enough distance between them. The adsorption form between it and the solid particles is the multi-position tail shape, so the solvation is greatly improved. Effective utilization of the chain.