Preparation process of homogeneous functional polymer microspheres

Abstract

The invention discloses a preparation process of homogeneous functional polymer microspheres, belonging to the technical field of chemical engineering. The preparation process comprises the followingpreparation steps: adding 100 kg of a stable liquid into a reaction liquid collecting tank for standby use; at the same time, adding high molecular polymer microsphere raw materials into an emulsification tank together; carrying out on-line emulsification for 15-30 min by an on-line emulsification pump; in the emulsification process, opening cooling water in the jacket of the emulsification tank to maintain the emulsion temperature less than 30DEG C; after emulsification is finished, transferring the emulsion in the emulsification tank to a swelling tank for swelling; keeping the temperature at 30-60 DEG C, and swelling for 1-3h; after the swelling is finished, transferring the stable liquid in the reaction liquid collecting tank to the swelling tank, stirring evenly, and quickly transferring the stable liquid under pressure to a coil reactor by a high-pressure pump. A dispersing phase can be recycled, the production cost can be reduced, and the discharge of waste liquid can be reduced, so that the preparation process has excellent application prospect and market potential.

Description

technical field [0001] The invention relates to the technical field of chemical engineering, in particular to a preparation process of uniform particle functional polymer microspheres. Background technique [0002] The seeded-swelling polymerization method (seeded-swelling polymerization) is one of the useful techniques for preparing various functional microspheres. The polymerization system of the seeded-swelling polymerization method is mainly composed of seed microspheres, oil phase monomers, dispersants, and initiators. And the stabilizer composition, the oil phase monomer in the liquid is continuously dissolved in water during the swelling process, and then absorbed by the seed microspheres until the swelling equilibrium is reached. If seed microspheres with monodisperse particle size are required, each seed absorbs monomer at almost the same rate, so the size of the swollen microspheres is also monodisperse. [0003] Generally, in the process of suspension polymerizat...

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Problems solved by technology

[0003] Generally, in the process of suspension polymerization, due to rapid stirring or dispersant, the particle size of the microspheres will be uneven during the polymerization process, which will affect the performance of the product, and even agglomerate or agglomerate side reactions will occur. In severe cases May cause production accidents

At the same time, the synthesis of functional polymer microspheres by suspension polymerization requires the use of a large amount of water as a medium, and the suspension polymerization method generally has a low solid content, so a large amount of water is required, which causes a waste of water resources and generates a large amount of dispersed particles. wastewater

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