Modified polytrifluorochloroethylene and preparation method thereof

A technology of polychlorotrifluoroethylene and chlorotrifluoroethylene, which is applied in the field of modified polychlorotrifluoroethylene, can solve the problems of small melt index, high melt viscosity, and low elongation at break, and meet the processing and application requirements , the effect of large melt index and elongation at break

Active Publication Date: 2021-06-18
ZHEJIANG RES INST OF CHEM IND CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above-mentioned preparation of polychlorotrifluoroethylene is realized through process optimization means such as post-treatment end-capping, kettle type selection, and molecular weight regulator. Generally small, high melt viscosity, low elongation at break and other deficiencies, which are not conducive to the processing and application of polytrifluorochloroethylene resin products

Method used

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  • Modified polytrifluorochloroethylene and preparation method thereof
  • Modified polytrifluorochloroethylene and preparation method thereof
  • Modified polytrifluorochloroethylene and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Add 56.4g of chlorotrifluoroethylene, 3.6g of modified monomer fluorosiloxane compound in 5L reactor 3L deionized water, 4.5g sodium perfluorooctanoate and 3.0g NH 4 HCO 3 . The temperature of the reactor was raised to 40° C., the pressure of the reactor was 0.5 MPa, and 3.0 g of bis(trichloroacetyl) peroxide was added to initiate the reaction. Subsequently, the above-mentioned modified monomer was continuously added at a rate of 3.4 g / h, and chlorotrifluoroethylene was continuously added at a rate of 53.6 g / h to maintain the pressure of the reactor at 0.5 MPa. During the reaction process, a total of 1200 g of polymerization monomers were added to the reactor, and the total reaction time was 20 h. The polymerized emulsion was demulsified, washed and dried to obtain 1050 g of modified polychlorotrifluoroethylene.

[0052] After testing: the modified polychlorotrifluoroethylene contains 6wt% modified monomers, the strength loss time is 315s, the melt index is 80g / 10m...

Embodiment 2

[0054] Add 115.8g of chlorotrifluoroethylene, 4.2g of modified monomer fluorosiloxane compound in 5L reactor 3L of deionized water, 4.5g of ammonium perfluorooctanoate and 3.0g of sodium dihydrogen phosphate. The temperature of the reaction kettle was raised to 35° C., and the pressure of the reaction kettle was 0.8 MPa, and 3.0 g of tert-butyl peroxybenzoate was added to initiate the reaction. Subsequently, the above-mentioned modified monomer was continuously added at a rate of 3.2 g / h, and chlorotrifluoroethylene was continuously added at a rate of 86.8 g / h to maintain the pressure of the reactor at 0.8 MPa. During the reaction process, a total of 1200 g of polymerization monomers were added to the reactor, and the total reaction time was 12 hours. The polymerized emulsion was demulsified, washed and dried to obtain 1100 g of modified polychlorotrifluoroethylene.

[0055] After testing: the modified polychlorotrifluoroethylene contains 6wt% modified monomers, the strengt...

Embodiment 3

[0057] Add 117.1g of chlorotrifluoroethylene, 2.9g of modified monomer fluorosiloxane compound in 5L reactor 3L of deionized water, 4.5g of potassium perfluorooctanoate and 3.0g of sodium tetraborate. The temperature of the reactor was raised to 50° C., the pressure of the reactor was 1.2 MPa, and 3.0 g of diisopropyl peroxydicarbonate was added to initiate the reaction. Subsequently, the above-mentioned modified monomer was continuously added at a rate of 3.2 g / h, and chlorotrifluoroethylene was continuously added at a rate of 131.8 g / h to maintain the pressure of the reactor at 1.2 MPa. During the reaction, a total of 1200 g of polymerization monomers were added to the reactor, and the total reaction time was 8 hours. The polymerized emulsion was demulsified, washed and dried to obtain 1090 g of modified polychlorotrifluoroethylene.

[0058] After testing: the modified polychlorotrifluoroethylene contains 6wt% modified monomers, the strength loss time is 330s, the melt in...

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Abstract

The invention discloses modified polytrifluorochloroethylene, which is formed by polymerizing trifluorochloroethylene and at least one siloxane compound containing trifluorovinyl ether as shown in the following structural formula (I), and also discloses a preparation method of the modified polytrifluorochloroethylene. The modified polytrifluorochloroethylene provided by the invention has relatively high strength loss temperature and relatively large melt index and elongation at break, and is suitable for being used as a drug packaging film and a solar cell front panel film.

Description

technical field [0001] The invention relates to a fluorine-containing polymer, in particular to a modified polychlorotrifluoroethylene. Background technique [0002] Polytrifluorochloroethylene has excellent water vapor barrier properties and is suitable for use as coating materials for electroluminescent electronic components, electrical components, electronic components, medical materials, pharmaceuticals, etc., especially suitable for pharmaceutical packaging films and solar cell front sheets film. When polytrifluorochloroethylene is used as a drug packaging film, it is required to have a higher loss of strength temperature, melt index and elongation at break. Therefore, increase the strength loss temperature of polytrifluorochloroethylene and adjust the appropriate melt index And elongation at break has become a hot spot for technicians to explore. [0003] In order to improve the strength-loss temperature, melt index and elongation at break of polychlorotrifluoroethyl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F214/24C08F230/08C08J5/18C08L27/12
CPCC08F214/242C08J5/18C08F230/08C08J2327/12Y02E10/50
Inventor 陈科宋健孙斌赵柯张万里
Owner ZHEJIANG RES INST OF CHEM IND CO LTD
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