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Hydrophilic polyvinylidene fluoride resin

A polyvinylidene fluoride resin, hydrophilic technology, applied in water/sewage treatment, water/sludge/sewage treatment, osmosis/dialysis water/sewage treatment, etc. problems, to achieve the effect of good water treatment capacity, low intrinsic viscosity, and improved hydrophilicity

Active Publication Date: 2018-09-04
ZHEJIANG QUZHOU JUSU CHEM IND CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the nanoparticles on the surface are easy to fall off, and have almost no removal effect on heavy metal ions.

Method used

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  • Hydrophilic polyvinylidene fluoride resin
  • Hydrophilic polyvinylidene fluoride resin
  • Hydrophilic polyvinylidene fluoride resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of hydrophilic polyvinylidene fluoride resin, its raw material formula is as follows:

[0024]

[0025]

[0026] The preparation method is as follows:

[0027] (1) Suspension polymerization

[0028] After adding 240kg of deionized water to the polymerization kettle, replace it with high-purity nitrogen gas. After the replacement is qualified, add 70kg of VDF monomer, 30kg of acrylic acid, 0.09kg of hydroxymethyl cellulose, 0.3kg of mercaptan, 0.4kg of diisopropyl peroxycarbonate and 10kg of deionized water was reacted at a stirring speed of 55rpm, the reaction temperature was 35°C, the reaction time was 12h, and the reaction pressure was 2.7Mpa to obtain a suspension polymerization product;

[0029] (2) Post-processing of suspension polymerization products

[0030] Wash the suspension polymerization product obtained in step (1) three times with deionized water (washing speed: 30rpm), then wash three times with deionized water at 60°C, then centrifuge and ...

Embodiment 2

[0032] A kind of hydrophilic polyvinylidene fluoride resin, its raw material formula is as follows:

[0033]

[0034] The preparation method is the same as in Example 1, and the analytical data of the product are shown in Table 1.

Embodiment 3

[0036] A kind of hydrophilic polyvinylidene fluoride resin, its raw material formula is as follows:

[0037]

[0038] The preparation method is the same as in Example 1, and the analytical data of the product are shown in Table 1.

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PUM

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Abstract

The invention discloses hydrophilic polyvinylidene fluoride resin. The hydrophilic polyvinylidene fluoride resin is prepared from, by weight, 60 to 90 parts of VDF monomers, 10 to 50 parts of comonomers, 0.05 to 1.5 parts of a dispersant, 0.1 to 0.5 part of a chain transferring agent and 0.1 to 1.0 parts of an initiator. An ultrafiltration membrane prepared from the hydrophilic polyvinylidene fluoride resin has good hydrophilicity, high membrane flux, long service life and good removal effect on metal ions.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a preparation method of hydrophilic polyvinylidene fluoride resin. Background technique [0002] Polyvinylidene fluoride (PVDF) has been widely used in the preparation of microstructures due to its good mechanical properties, heat resistance, chemical corrosion resistance and easy film formation, so that the corresponding film has excellent chemical oxidation resistance and corrosion resistance. Water treatment membrane fields such as filtration, ultrafiltration and reverse osmosis membranes. However, due to the strong hydrophobicity of PVDF, PVDF membranes have defects such as low water flux, easy to be polluted by organic matter, and short service life, and conventional PVDF water treatment membranes have almost no removal effect on heavy metal ions, which severely limit PVDF membranes. The scope of application of water treatment membranes. [0003] Conv...

Claims

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Application Information

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IPC IPC(8): C08F214/22C08F222/02C08F220/06C08F2/38C08F2/18C08F2/20B01D71/34B01D61/14C02F1/44
CPCB01D61/145B01D71/34C02F1/444C08F2/18C08F2/20C08F2/38C08F214/22C08F220/06C08F222/02
Inventor 尹作柱韩金铭吴志刚苏兰辉吴宇鹏王正良吕颖琦祝龙信赵鑫犇马从礼
Owner ZHEJIANG QUZHOU JUSU CHEM IND CO LTD
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