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Jun 9, 2023
Mix the organosilicon polymer lotion and acrylate polymer lotion. First mix the organosilicon lotion with an appropriate amount of stabilizer, adjust the pH value, and then mix it evenly with acrylate lotion in a certain proportion. There is no chemical reaction between the two lotion. By means of blending, the excellent properties of each monomer in the polymer can be included and improved, and the purpose of modifying acrylate polymer lotion with organosilicon can be achieved. However, after most of the active groups of the silicone polymer participate in the reaction, no chemical bond force can be generated between the silicone polymer and the acrylate polymer and the substrate, and because the surface energy of the silicone polymer and the acrylate polymer differ greatly, the stability potential of the lotion after mixing is easy to produce two-phase separation, so the stability of the lotion is not high, the storage period is short, and its weather resistance and adhesion are not significantly improved.
The surface composition, micromorphology and mechanical properties of the polysiloxane blend modified styrene/butyl acrylate lotion film were studied in detail, and compared with the copolymerization modification method. It was found that the migration degree of polysiloxane in the blend modified styrene/butyl acrylate lotion film to the surface of the film was significantly higher than that to the surface of the copolymerization modified film, And the content of surface polysiloxane increases with the increase of polysiloxane content in the modified film, and the decrease in tensile strength of the blend modified film is also significantly higher than that of the copolymer modified film. Scanning electron microscopy observation of the morphology of the membrane cross-section can prove this.
The physical blend of silicone polymer lotion and acrylate polymer lotion has poor compatibility, easy to produce two-phase separation, short storage period, and there is no chemical bond between silicone polymer and acrylate polymer, so its weather resistance and adhesion are not significantly improved. For this reason, PMBPD solubilizer was synthesized by copolymerization of [4- (methacryloyloxy) butyl] pentamethylsiloxane (MBPD) and methyl methacrylate (MMA), and the ideal blending of silicone polymer and acrylate polymer was successfully realized; the compatibility of the blended lotion was improved by adding solubilizer or crosslinking agent; the substance with affinity to polysiloxane was grafted or chemical bond onto the acrylate polymer lotion (i.e., solubilizer) And then blended with polysiloxane lotion to organically combine the two, inhibit the migration of silicone molecules to the surface of the lotion film, significantly reduce the interfacial tension between the two phases, and significantly improve the compatibility between the two phases and the mechanical strength of the adhesive film.
Our main products are Silicones in Hair Care，Silicone Resin Blend for Personal Care，Dimethicone Silicone Resin Blend，Amino Phenyl Silicone Resin，Silicone Resin Modifier for Artificial Leather，Synthetic Leather Silicone Resin Modifier,Methyl MQ Silicone Resin Powder，MQ Methyl Silicone Resin Liquid.