Organic solvent water absorbent and preparation method thereof

Abstract

The invention provides an organic solvent water absorber, which consists of the following raw materials by weight: 1 to 3 portions of wood flour, 10 to 30 portions of water, 8 to 25 portions of acroleic acid, 3 to 8 portions of sodium hydroxide solution of 30 percent, and 0.04 to 0.12 portion of potassium persulfate. After the raw materials are mixed, the mixture is heated and beaten in nitrogen atmosphere, thus getting high viscosity light brownish yellow cream through copolymerization; after the cream is dried and pulverized, light brownish yellow powder with the granularity from 40 meshes to 100 meshes is got; the water absorption rate is 600 to 800g / g, and the absorption speed is 25g per minute. The water absorber is prepared through the three steps of preparing softened wood flour, preparing a copolymer and preparing the water absorber, which is used as a water absorber for non-medical and non-food used organic solvents which do not require high purity, a soil water retention agent, or a cement curing compound. The water absorber uses the wood flour as a raw material, and comprehensively makes use of cellulose, hemicellulose and lignin in the wood flour as the skeleton and the cross-linking agent of the copolymer; the timber utilization rate is high; the cost is low; and the preparation process does not pollute the environment.

Description

technical field

[0001] The invention relates to an organic polymer compound, in particular to a water-absorbing agent with high water-absorbing rate incompatible with organic solvents and a production method thereof. Background technique

[0002] Many organic solvents obtained from industrial production contain water, such as ethanol, dimethyl sulfoxide, N,N-dimethylformamide, pyridine, etc. , There will be anhydrous requirements, such as ethanol, as a fuel, or used in the manufacture of electronic components, high-grade cosmetic solvents, chemical production raw materials, etc., all need anhydrous ethanol. Other organic solvents also have anhydrous requirements in many applications. At present, there are many methods for the dehydration of organic solvents, and there are both general methods and specific methods for the dehydration of different organic solvents. Take ethanol as an example: as we all know, azeotropic distillation method can be used for ethanol, but this me...

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