Production method of polyvinylidene fluoride with thermal stability

A technology of polyvinylidene fluoride and production method, which is applied in the field of thermally stable polyvinylidene fluoride, can solve problems such as not being well satisfied, and achieve the effect of good thermal stability and processability

Inactive Publication Date: 2015-04-08
CHANGSHU LIYUAN MEMBRANE TECH
View PDF1 Cites 7 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 pr

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 thermally stable polyvinylidene fluoride, comprising the steps of:

[0012] 1) Put 1.7 parts by weight of hydrogen peroxide and 3.1 parts by weight of inorganic alkali solution into the reaction kettle, mix well, then put in 14.3 parts by weight of dichlorofluoroethane solvent and 1.5 parts by weight of sulfonyl chloride solution, and stir and react at -2°C for 28 minutes;

[0013] 2) Add 5.8 parts by weight of sodium pyrophosphate solution, 93 parts by weight of vinylidene fluoride monomer, and 0.9 parts by weight of l,2-dimethylcyclopentane, stir and react at 1...

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 with thermal stability. The production method comprises the following steps of (1)adding 1.7 parts of hydrogen peroxide and 3.1 parts of an inorganic alkaline solution into a reaction kettle, uniformly mixing, then, adding 14.3 parts of a dichlorofluoroethane solvent and 1.5 parts of a sulfonyl chloride solution, and reacting while stirring at the temperature of 2 DEG C below zero for 28 minutes; (2) introducing 5.8 parts of a sodium pyrophosphate solution, 93 parts of vinylidene fluoride monomers and 0.9 part of 1, 2-dimethylcyclopentane, reacting while stirring at the temperature of 18 DEG C, and stopping reacting when the pressure is reduced to less than 0.25MPa; and (3) filtering, washing and drying to obtain the powdery polyvinylidene fluoride. The polyvinylidene fluoride prepared by using the production method is favorable in thermal stability and processability and capable of meeting the requirements of production processes such as injection molding, extrusion and film drawing.

Description

technical field [0001] The invention relates to a production method of thermally stable 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 object of the present invention is to provide a production method of thermally stable polyvinylidene fluoride, the vinylidene fluoride prepared by the method has good thermal stability and processability, and can meet the production processes of 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 thermally stable polyvinylidene fluoride, comprising the steps of: [0005] 1) Put 1.7 parts by weight of hydrogen peroxide and 3.1 parts by weight of inorg...

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
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

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