Hyperbranched polyacrylamide copolymer with ion load

Abstract

The invention pertains to an ion-loaded highly branched polyacrylamide polymer and a preparation process thereof. Usually, homopolymerized or copolymerized soluble polyacrylamide can be prepared by radiation and chemical initiation in the form of bulk or emulsion polymerization. Though the polymer has excellent flocculation and thickening property, but has bad salt-tolerant property, more particularly, the polymer molecular chain is crosslinked and the aqueous solution is gelatinized by polyvalent metal ion, thus obviously reducing the application properties. The composition of the invention consists of natural high molecular, polyvalent metal salt, acrylamide, acrylic acid, urea, sodium acetate and chlorides of magnesium, calcium and aluminium; wherein, the natural high molecular is 5 to50 percent by weight, the polyvalent metal salt is 1 to 5 percent by weight, the acrylamide is 60 to 90 percent by weight, the acrylic acid is 5 to 20 percent by weight, the urea is 0 to 5 percent byweight, the sodium acetate is 0 to 5 percent by weight, the chlorides of magnesium, calcium and aluminium are 0 to 5 percent by weight. The product is applicable to the solid-liquid separation of highstability, high salinity and high solid content systems.

Description

Technical field: [0001] The invention relates to a chemical product, in particular to a highly branched polyacrylamide copolymer with ion loading. Background technique: [0002] In the prior art, homopolymer or copolymer water-soluble polyacrylamide can usually be prepared by bulk or emulsion polymerization by means of radiation and chemical initiation. Although the polymer has good flocculation and solution thickening properties, it has poor salt resistance, especially It is the multivalent metal ions that will cross-link the polymer molecular chains, gel the aqueous solution, and significantly reduce the application performance. Therefore, the technology of introducing multivalent metal ions into the polymerization system has always been a research hotspot. [0003] In the flocculation application, the primary-secondary flocculation process composed of polymer and inorganic salt is usually used, and the drug is dosed step by step. The process is complicated and the floccu...

AI Technical Summary

Problems solved by technology

[0003] In the flocculation application, the main-secondary flocculation process composed of polymer and inorganic salt is usually used, and the drug is dosed step by step. The process is complicated and the flocculation efficiency is low.