Preparation process for diethylene triaminepentaacetic acid dianhydride modified polyvinylidene fluoride separation membrane and resin

A technology of diethylenetriaminepentaacetic dianhydride and polyvinylidene fluoride, which is applied in the field of performance improvement of polyvinylidene fluoride polymer materials, can solve the problem of affecting the performance of polyvinylidene fluoride separation membranes and resins, limiting polyvinylidene fluoride Separation membrane and resin applications and other issues, to achieve the effect of removal and resource utilization, improvement of hydrophilic performance, and simple operation

Inactive Publication Date: 2011-02-02
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existence of these problems will affect the performance of polyvinylidene fluoride separation membranes and resins, and ultimately limit the application of polyvinylidene fluoride separation membranes and resins in the field of water treatment

Method used

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Examples

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Embodiment

[0032] 1. Preparation process of polyvinylidene fluoride modified polyvinylidene fluoride separation membrane by chemical blending / phase transfer technology

[0033] 1) Preparation of chemical solution used for alkalization of polyvinylidene fluoride:

[0034] Add 170g of sodium hydroxide and 5g of tetrabutylammonium bromide into 1L of deionized water in turn, stir to dissolve them all, and the conductivity of the deionized water is 5-10μs / cm;

[0035] 2) Polyvinylidene fluoride alkalization treatment:

[0036] After all the components in the chemical alkalization solution are dissolved, the temperature is raised slowly;

[0037] When the temperature of the alkalization solution rises to 80°C, add polyvinylidene fluoride particles with an average particle size of 0.05mm and a mass of 400g into the chemical alkalization solution for alkalization, keep the solution temperature at 75-85°C, and alkalize The processing time is 8h;

[0038] After alkalization treatment for 8 hour...

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Abstract

The invention provides a preparation process for a diethylene triaminepentaacetic acid dianhydride modified polyvinylidene fluoride separation membrane and a resin with solvents of diethylene triaminepentaacetic acid dianhydride, sodium hydroxide, sodium borohydride, tetrabutyl ammonium bromide, p-toluenesulfonic acid, N,N-dimethylacetylamide, polyvinylpyrrolidone and the like as raw materials by utilizing a chemical blending / phase transfer process, which has the advantages of simple operation, uniform blending and the like. In the process, diethylene triaminepentaacetic acid multi-aminopolycarboxylic acid compounds are uniformly blended in the polyvinylidene fluoride separation membrane and the resin; the hydrophilic performance of the polyvinylidene fluoride separation membrane and the resin is improved; the elimination of complexing state heavy metal ions from waste water can be realized by utilizing the polyvinylidene fluoride separation membrane and the resin; the efficiency for purifying drinking water by utilizing the polyvinylidene fluoride separation membrane and the resin is enhanced; the elimination and the recycling utilization of the complexing state heavy metal ions in industrial waste water can be promoted; and the application of the polyvinylidene fluoride separation membrane and the resin in the field of water processing is expanded.

Description

technical field [0001] The present invention relates to the performance improvement of polyvinylidene fluoride macromolecular materials, in particular to a kind of polyvinylidene amine pentaacetic dianhydride, sodium hydroxide, sodium borohydride, tetrabutylammonium bromide, p-toluenesulfonic acid, N , N-dimethylacetamide and other reagents are used as raw materials, and chemical blending / phase transfer technology is used to modify the preparation process of polyvinylidene fluoride separation membranes and resins. Background technique [0002] Polyvinylidene fluoride separation membrane technology has the advantages of normal temperature operation, no phase change, obvious energy saving effect, high filtration accuracy, low production pollution, large water output and good quality. Through the screening and interception of the membrane, it has an excellent removal effect on suspended particles and colloidal pollutants in the water body. Polyvinylidene fluoride separation me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/34
Inventor 宋来洲汤培赵晓丹张志辉
Owner YANSHAN UNIV
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