Triblock fluorinated polymer and preparation method thereof

A technology of fluorinated polymers and block polymers, which is applied in the field of fluorinated polymers and its preparation, can solve the problems of high fluorine content, high price, difficulty in fluorinated alkyl groups, etc., and achieve high stable hydrophobic surface, low content The effect of fluorine content and high technical requirements

Inactive Publication Date: 2011-05-25
ZHEJIANG SCI-TECH UNIV
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since most stable hydrophobic fluorinated surfaces are obtained, special, crystalline aromatic heterocyclic fluorinated side chain monomers are used, or only under ideal conditions, the highly ordered arrangement and stacking of fluorinated alkyl groups is achieved. There are still huge problems to be solved in practical application: first, it is difficult to obtain monomers with this structure, and the price is expensive; second, it is very difficult to realize the close packing of fluorinated alkyl side chains; third, it is very difficult to obtain stable Hydrophobic surface polymer with high fluorine content

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Triblock fluorinated polymer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Polymethyl methacrylate-b-polyoctadecyl methacrylate-b-polyperfluorooctylethyl methacrylate triblock copolymer (PMMA 230 - Preparation of b-PODMAm-b-PFMAn). PMMA 230 The preparation of the -Br macromolecular initiator is as follows: the polymerization is carried out in a 500mL three-necked flask, and the baking bottle is ventilated three times to remove oxygen and moisture in the reaction device, and then in N 2Add metered catalytic CuBr or CuCl, monomer MMA, solvent toluene, complexing agent pentamethyldiethyltriamine (PMDETA), initiator 2-bromoethyl propionate (initiator / catalyst / coordination) successively under protection agent / monomer (1:1:2:120), stirred and heated to 70°C, and reacted in a constant temperature oil bath for 6h. After the reaction is finished, it is diluted with tetrahydrofuran, and the copper salt is separated through a column of neutral alumina. Dry in vacuum at 40°C to constant weight. PMMA 230 -b-PODMA m -The preparation of the Br macromol...

Embodiment 2

[0027] Polybutylmethacrylate-b-polyoctadecylmethacrylate-b-polyperfluorooctylethylmethacrylate triblock copolymer (PBMA 164 - Preparation of b-PODMAm-b-PFMAn). Polymerization was carried out in a 250mL three-neck flask, and the baking bottle was ventilated three times to remove oxygen and moisture in the reaction device, and then in N 2 Add metered catalyst CuCl and macromolecular initiator PBMA sequentially under protection 164 -Br, monomer ODMA, solvent toluene (feeding ratio ODMA / PBMA 164 - Br / catalyst / PMDETA: (10, 20, 50, 70) / 1 / 1 / 2). Waiting for PBMA 164 After the -Br is completely dissolved, the ligand is added last. Slowly raise the temperature to 85°C under stirring, and react in a constant temperature oil bath for 12 hours. After the reaction, use an ice-water cooling bath. After the temperature drops, dilute with tetrahydrofuran and separate through a column with neutral alumina to remove the catalyst CuCl. The obtained filtrate is removed by rotary evaporation t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
degree of polymerizationaaaaaaaaaa
degree of polymerizationaaaaaaaaaa
degree of polymerizationaaaaaaaaaa
Login to view more

Abstract

The invention discloses a high-molecular compound and a preparation method thereof, particularly relates to a fluorinated polymer with extremely low fluorine content and a high-stability hydrophobic surface and a preparation method thereof. In the invention, crystalline long-chain alkyl methacrylate is introduced in the middle of a polymethylmethacrylate-b-polyperfluorooctylethyl methacrylate block polymer. The preparation method comprises the steps of preparing a PMMAk-Br macroinitiator and a PMMAk-b-PODMAm-Br macroinitiator stage by stage and then preparing a fluorinated block copolymer. The compound prepared by the invention can improve the surface hydrophobic and lipophobic properties, the surface fluorine-contained component enrichment and the environment surface stability of a polymer. The preparation method has mild reaction conditions, is easy to operate, moreover, the contents of all the components used in the method can be regulated and controlled. The invention has wide application value.

Description

technical field [0001] The invention discloses a polymer compound and a preparation method thereof, in particular to a fluorinated polymer with extremely low fluorine content and a highly stable hydrophobic surface and a preparation method thereof. technical background [0002] Fluorinated polymers have very unique surface properties, such as low surface energy, low friction, self-cleaning, good weather resistance, etc., so they are widely used in optical fibers, optical components, fabric and paper finishing agents, hydrophobic materials, ship resistance Biofouling coating materials, etc. Due to their low surface energy, fluorine-containing components usually tend to concentrate at the air / polymer interface, thus giving the polymer excellent surface properties. The polymer surface is a dynamic surface. In order to adapt to the environment and make the interface energy the lowest, the fluoropolymer will quickly rearrange after contacting with water, so that its high contact...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C08F293/00C08F120/14C08F120/18C08F120/16C08F120/24
Inventor 王新平倪华钢杨菊萍
Owner ZHEJIANG SCI-TECH UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap