Production method of polyvinylidene fluoride

A technology of polyvinylidene fluoride and its production method, which is applied in the production field of polyvinylidene fluoride, can solve problems such as unsatisfactory satisfaction, and achieve good thermal stability and processability

Inactive Publication Date: 2015-03-25
CHANGSHU LIYUAN MEMBRANE TECH
View PDF7 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing vinylidene fluoride materials need to be improved in terms of thermal stability and processability, especially in the production processes such as injection molding, extrusion and film drawing.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] The specific implementation of the present invention will be further described below in conjunction with the examples. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0010] The technical scheme of concrete implementation of the present invention is:

[0011] A production method of polyvinylidene fluoride, comprising the steps of:

[0012] 1) Put 0.9 parts by weight of hydrogen peroxide and 1.2 parts by weight of inorganic alkali solution into the reaction kettle, mix well, then put in 14.5 parts by weight of trifluorotrichloroethane solvent and 1.8 parts by weight of phenylmethylsulfonyl fluoride solution, and stir at -5 °C React for 25 minutes;

[0013] 2) Add 3.2 parts by weight of hexyldecanol solution, 69 parts by weight of vinylidene fluoride monomer, and 1.8 parts by weight of n-butylcyclopentane, stir and react at 28°C, and termina...

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

No PUM Login to view more

Abstract

The invention discloses a production method of polyvinylidene fluoride. The production method comprises the following steps of (1) adding 0.9 part by weight of hydrogen peroxide and 1.2 parts by weight of an inorganic alkali solution into a reaction kettle, uniformly mixing, then, adding 14.5 parts by weight of a trifluorotrichloroethane solvent and 1.8 parts by weight of a phenylmethylsulfonyl fluoride solution, and reacting at the temperature of 5 DEG C below zero for 25 minutes by stirring; (2) introducing 3.2 parts by weight of a 2-hexyl-1-decanol solution, 69 parts by weight of vinylidene fluoride monomers and 1.8 parts by weight of n-butyl cyclopentane, reacting at the temperature of 28 DEG C by stirring, and stopping reacting when the pressure is reduced to be smaller than 0.23MPa; and (3) filtering, washing and drying to obtain powdery polyvinylidene fluoride. Polyvinylidene fluoride prepared by using the production method is favorable in thermal stability and processibility and capable of meeting the requirements of production processes such as injection molding, extruding and film drawing.

Description

technical field [0001] The invention relates to a production method of polyvinylidene fluoride. Background technique [0002] The thermal stability and processability of the existing vinylidene fluoride materials need to be improved, especially the production processes such as injection molding, extrusion and film drawing cannot be well satisfied. Contents of the invention [0003] The purpose of the present invention is to provide a production method of polyvinylidene fluoride, the prepared vinylidene fluoride has good thermal stability and processability, and can meet production processes such as injection molding, extrusion and film drawing. [0004] In order to achieve the above object, the technical solution of the present invention is to design a production method of polyvinylidene fluoride, comprising the steps of: [0005] 1) Put 0.9 parts by weight of hydrogen peroxide and 1.2 parts by weight of inorganic alkali solution into the reaction kettle, mix well, then p...

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): C08F114/22
Inventor 徐建林邹建良宗建青仇峰
Owner CHANGSHU LIYUAN MEMBRANE TECH
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