Preparation method of anti-ferroelectric poly(vinylidene fluoride-trifluoroethylene-chlorotrifluoroethylene) grafted polymer

A technique for grafting polymers and chlorotrifluoroethylene, which is applied in the field of preparation of fluorine-containing graft polymers, can solve problems such as the reduction of energy storage density of polymers, and achieve low usage content, simple and easy-to-control operations, and easy grafting Effect of Polymer Purification

Active Publication Date: 2018-08-14
CHENGDU HONGMING ELECTRONICS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Recently, it has been reported that the method of grafting P(VDF-CTFE) to polystyrene (PS) (Appl. Phys. Lett. 2009, 94, 052907.) significantly reduces the energy loss of t...

Method used

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  • Preparation method of anti-ferroelectric poly(vinylidene fluoride-trifluoroethylene-chlorotrifluoroethylene) grafted polymer
  • Preparation method of anti-ferroelectric poly(vinylidene fluoride-trifluoroethylene-chlorotrifluoroethylene) grafted polymer
  • Preparation method of anti-ferroelectric poly(vinylidene fluoride-trifluoroethylene-chlorotrifluoroethylene) grafted polymer

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Embodiment 1

[0027] This embodiment includes the following steps:

[0028] Step 1. Add the polymer raw material into the three-necked bottle, and add the catalyst, ligand and reducing agent at the same time. After mixing, vacuumize and fill nitrogen for three cycles, add the deoxygenated solvent with a syringe. The mass ratio of the solvent to the polymer raw material 15:1~30:1, stir well, after the polymer raw material is completely dissolved, move the reaction bottle into the oil bath, heat up to 100°C; add the grafted monomer MMA with a syringe, the grafted monomer and the polymer raw material The mass ratio of the graft monomer to the polymer raw material is 1:1 to 5:1, and the temperature is raised to 120°C after 15 minutes of polymerization; the graft monomer St is added with a syringe, and the mass ratio of the graft monomer to the polymer raw material is 1:1 to 10:1 , the polymerization stopped after 30 minutes;

[0029] Step 2. Add acetone to the reaction solution obtained in ste...

Embodiment 2

[0043] This embodiment includes the following steps:

[0044]Step 1. Add the polymer raw material into the three-necked bottle, and add the catalyst, ligand and reducing agent at the same time. After mixing, vacuumize and fill nitrogen for three cycles, add the deoxygenated solvent with a syringe. The mass ratio of the solvent to the polymer is 15:1~30:1, stir well, after the polymer raw material is completely dissolved, move the reaction bottle into the oil bath, heat up to 100°C; add the graft monomer MMA with a syringe, The mass ratio is 1:1 to 5:1, and the temperature is raised to 120°C after 30 minutes of polymerization; the grafted monomer St is added with a syringe, and the mass ratio of the grafted monomer to the polymer raw material is 1:1 to 10:1. Polymerization stopped after 1 hour;

[0045] Step 2. Add acetone to the reaction solution obtained in step 1 to dilute to obtain a diluted reaction solution. The volume ratio of acetone to the reaction solution is 1:3; th...

Embodiment 3

[0059] This embodiment includes the following steps:

[0060] Step 1. Add the polymer raw material into the three-necked bottle, and add the catalyst, ligand and reducing agent at the same time. After mixing, vacuumize and fill nitrogen for three cycles, add the deoxygenated solvent with a syringe. The mass ratio of the solvent to the polymer raw material 15:1~30:1, fully stirred, after the polymer is completely dissolved, move the reaction bottle into the oil bath, and raise the temperature to 100°C; add the grafted monomer MMA with a syringe, the mixture of the grafted monomer and the polymer raw material The mass ratio is 1:1 to 5:1, and the temperature is raised to 120°C after the polymerization reaction for 1 hour; the grafted monomer St is added with a syringe, and the mass ratio of the grafted monomer to the polymer raw material is 1:1 to 10:1, Polymerization stopped after 1.5 hours;

[0061] Step 2. Add acetone to the reaction solution obtained in step 1 to dilute to ...

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Abstract

The invention provides a preparation method of an anti-ferroelectric poly(vinylidene fluoride-trifluoroethylene-chlorotrifluoroethylene) grafted polymer. The preparation method takes N-methyl pyrrolidone and the like as a solvent, cuprous chloride, 2,2-dipyridine, copper and the like as a catalysis system, poly(vinylidene fluoride-trifluoroethylene-chlorotrifluoroethylene) (P(VDF-TrFE-CTFE)) as polymer raw materials, and methyl methacrylate, styrene, acrylonitrile and the like as grafting monomers; after the materials are stirred to react for certain time under the condition of raising the temperature by sections, grafted polymers including P(VDF-TrFE-CTFE)-g-P(St-MMA) and the like are synthesized. The method provided by the invention is simple to operate and easy to control; the use amount of a catalyst is low and a high-purity target product is easy to obtain; the method has a good industrial application prospect.

Description

technical field [0001] The invention relates to a preparation method of a fluorine-containing graft polymer, in particular to a preparation method of an antiferroelectric poly(vinylidene fluoride-trifluoroethylene-trifluorochloroethylene) graft polymer. Background technique [0002] Polyvinylidene fluoride (PVDF)-based fluoropolymer has become a research hotspot in recent years for high-energy storage and low-loss capacitor materials due to its excellent dielectric, ferroelectric, and piezoelectric properties. However, its typical ferroelectric characteristics, As a result, it has a high remanent polarization value and most of the stored charges cannot be effectively released, accompanied by high dielectric loss and energy loss. To this end, the researchers introduced the structure into P(VDF-TrFE) by electron irradiation (Science.1998, 280, 2101-2104.) or the method of copolymerizing the third monomer (Macromolecules 2002, 35, 7678-7684.) Defects destroy its large-sized gr...

Claims

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Application Information

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IPC IPC(8): C08F259/08C08F212/08C08F220/14C08L51/00C08J5/18
CPCC08F259/08C08J5/18C08J2351/00C08F212/08C08F220/14
Inventor 廖煜张志成刘晶晶
Owner CHENGDU HONGMING ELECTRONICS CO LTD
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