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Nonionic functional fluorine-containing polymer and preparation method thereof

A non-ionic, functional technology, applied to the types of packaging items, special packaging items, medical containers, etc., can solve the problems of difficult control of content, limited application range, and failure of fluorine-containing copolymers to achieve hydrophilicity, etc.

Active Publication Date: 2016-10-05
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The comonomers in the existing fluorine-containing copolymers are mostly oil-soluble monomers (such as vinyl acetate, acrylate, etc.), although the copolymerization content can reach 10-20wt%, but the obtained copolymers have poor hydrophilicity
When using water-soluble monomers (such as maleic anhydride, acrylic acid, etc.) The content of water-soluble monomer components in the copolymer is particularly low, only below 5wt%, so that the fluorine-containing copolymers prepared in the prior art cannot achieve good hydrophilicity, and the content of water-soluble monomers is particularly low and its content Difficult to control, which greatly limits its scope of application

Method used

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  • Nonionic functional fluorine-containing polymer and preparation method thereof
  • Nonionic functional fluorine-containing polymer and preparation method thereof
  • Nonionic functional fluorine-containing polymer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0147] Synthesis of non-ionic functionalized fluoropolymer P1:

[0148] Add 2000ml deionized water, additive polyvinyl alcohol (PVA) 1.2g, additive hydroxypropyl methylcellulose (HPMC) 0.4g, initiator peroxydicarbonate bis(2-ethylhexyl) in the stainless steel reaction kettle (EHP) 1g, evacuated and filled with nitrogen repeatedly 3 times, then added 1500g of vinylidene fluoride, 27.19g of hydroxyethyl acrylate and 4.85g of allyl 2-bromo-2-methylpropionate, pre-dispersed and stirred at room temperature for 30 minute. The temperature was raised to a polymerization temperature of 47° C. to carry out a polymerization reaction. React for 12 hours, stop heating when the pressure drop in the kettle reaches 0.2MPa, volatilize naturally for 15 minutes, introduce air for 5 minutes, vacuumize and fill with nitrogen three times, then add 33.51g of dimethylaminoethyl acrylate, 5g of copper, chlorine Cuprous chloride 5g, 2,2'-bipyridine (bpy) 16g, then control the temperature at 60°C, and...

Embodiment 2

[0165] Synthesis of non-ionic functionalized fluoropolymer P2:

[0166] Referring to Example 1 for the synthesis process of P2, the formula and process parameters are shown in Table 1 and Table 2 respectively.

[0167] The P2 structure and performance characterization methods are the same as those in Example 1. The general formula of the P2 structural formula is the same as that of P1, wherein the parameters in the general formula are as shown in Table 3; the molecular weight and molecular weight distribution of P2 are as shown in Table 4; 5.

Embodiment 3

[0169] Synthesis of non-ionic functionalized fluoropolymer P3:

[0170] The synthesis process of P3 refers to Example 1, and the formula and process parameters are shown in Table 1 and Table 2 respectively.

[0171] The P3 structure and performance characterization methods are the same as those in Example 1. The general formula of the P3 structural formula is the same as that of P1, wherein the parameters in the general formula are shown in Table 3; the molecular weight and molecular weight distribution of P3 are shown in Table 4; 5.

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Abstract

The invention discloses a nonionic functional fluorine-containing polymer and a preparation method thereof. The functional fluorine-containing polymer is a nonionic functional fluorine-containing polymer prepared by the steps of: taking a fluorine-containing monomer, a graftable active monomer and a hydrophilic functional monomer as copolymerization monomers, firstly polymerizing, in a water phase dispersion system, the copolymerization monomers into an active precursor polymer of which the main chain contains an atom transfer free radical polymerization active side group, then initiating a nonionic functional monomer by using the active side group on a solid liquid interface to perform interface atom transfer free radical polymerization, and performing polymerization to form the nonionic functional fluorine-containing polymer containing a nonionic side chain. The nonionic functional fluorine-containing polymer prepared by the method disclosed by the invention has a high functional monomer content and good hydrophilicity, can be applied separately to preparation or together with other resin to blending preparation of a high-hydrophilicity separation membrane, a battery diaphragm, a biological medical material, a coating, a bonding material and a flexible easy-printing packing material, and in comparison with an existing material, is good in hydrophilicity, low in cost, and good in application prospect.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a non-ionic functionalized fluorine-containing polymer and a preparation method thereof. Background technique [0002] Fluorine atoms have strong electronegativity, low polarizability, weak van der Waals force and high bond energy (485.3kJ / mol) of C-F bond, which makes fluoropolymers have outstanding heat resistance, solvent resistance, acid and alkali corrosion resistance, Excellent weather resistance, flame retardancy, and unique low surface energy, etc. Fluorine-containing polymers are mainly divided into fluorine-containing olefin polymers and fluorine-containing acrylate polymers. [0003] Polyvinylidene fluoride (PVDF) is non-toxic and odorless, and its appearance is translucent or white powder or granules. Ultraviolet radiation and aging resistance; the molecular chains of PVDF are closely arranged, the crystallinity is high, the hydrophobicity is large, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F259/08C08F220/28C08F220/58C08F220/34C08F226/06C08F220/60C08F216/14C08J5/18C08L51/00A61L33/06
Inventor 朱宝库姚之侃银雪王纳川方立峰周名勇崔月许云秋包永忠朱利平
Owner ZHEJIANG UNIV
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