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
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[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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