Optimization of preparation technology and application study of polymers for drilling pile construction
In this paper,an efficient wall protection polymer PZH-4 was designed and synthesized for drilling pile construction,and the optimal conditions for its synthesis were optimized by orthogonal test.N,N-dimethylacrylamide,2-acrylamide-2-methylpropanesulfonic acid,vinylpyrrolidone and acryloxyethyl trimethylammonium chloride were used as polymeric monomers.The mass ratio of polymerization was 3∶1∶1∶1 and the total proportion was 30％,the initiator concentration was 0.2wt％,the carbamide concentration was 0.2wt％,and the residual was deionized water.After reacting at 60℃ for 8h,PZH-4 polymer molecules with molecular weight higher than 12 million could be obtained,and the polymer powder could be fully dissolved in clean water within 12s after sifting through 140 mesh.The mud system is better than bentonite mud system in terms of thickening,sand content,colloid rate and water loss.At the same time,the waste polymer drilling mud system can be efficiently treated with 5％sodium hypochlorite solution and 3％hydrogen peroxide solution.
drilling pile constructionwall protector polymerpreparation technologyapplied research
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维普
