| abstract |
The invention belongs to the technical field of fine chemical preparations, and discloses a non-silicon defoamer, comprising an acrylate polymer, an organic solvent carrier, hydrophobic particles, and a defoaming aid; the acrylate polymer is composed of the following raw material components Made of: Monomer‑1, Monomer‑2, unsaturated capped polyethers, olefins, diluents, initiators. The invention also discloses a preparation method of the non-silicon defoamer. The invention also discloses the application of the non-silicon defoamer in defoaming and foam suppression in systems rich in anionic surfactants. The antifoaming agent of the present invention uses acrylate polymer as the main active substance, and the antifoaming agent has excellent antifoaming performance. The defoaming performance of the acrylate polymer is improved by adding the monomer step by step, and the hydrophilicity of the acrylate polymer is improved by modifying the unsaturated end-capped polyether, which further improves its instant defoaming ability. The olefins with 6-22 carbon atoms are modified to improve the anti-foaming performance of the defoamer. |