Method of fabricating highly cross-linked polymer spheres having uniform granular sizes

摘要

Polymer spheres are fabricated. Dispersing polymerization and a two-stage swelling procedure are processed. The polymer spheres fabricated have uniform granular sizes and are highly cross-linking. Thus, the polymer spheres are heat-resistant and solvent-resistant.

主权项

1. A method of fabricating cross-linked polymer spheres having uniform granular sizes, comprising the steps of:
(a) obtaining a plurality of seeds through dispersion polymerization; (b) mixing a content of a swelling assistant and a content of a surfactant to be added with said plurality of seeds to obtain a seed solution, wherein said swelling assistant, said surfactant and said plurality of seeds are mixed through ultra-sonic vibration with magnetite for 30˜40 minutes (min) and, then, are stirred with a mechanical stirrer at a speed of 120˜160 rounds per minute (rpm) under a temperature of 25˜35 Celsius degrees (° C.) for a time period of 8˜12 hours (hr); (c) uniformly mixing a content of a monomer and a content of an initiator to be added with a content of a cross-linking agent and a content of a surfactant to obtain a monomer emulsion after homogenization; and (d) mixing said seed solution and said monomer emulsion to be stirred and added with a stabilizer and an inhibitor after processing monomer swelling; then, flowing in nitrogen and stirring to uniformly process mixing; and, then, heating up to process polymerization to obtain a plurality of cross-linked polymer spheres, wherein said spheres have an average granular diameter twice as big as that of said seeds.