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Polytrifluorochloroethylene resin composition

A technology of polychlorotrifluoroethylene and resin composition, which is applied in the application field of fluorine-containing polymers, can solve problems such as limitation of improvement effect, achieve good interfacial compatibility, improve processing performance, and improve melt fluidity

Active Publication Date: 2021-09-28
JUHUA GROUP TECH CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Improvements will be limited if only two polymers with similar structural properties are physically blended

Method used

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  • Polytrifluorochloroethylene resin composition
  • Polytrifluorochloroethylene resin composition
  • Polytrifluorochloroethylene resin composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Place the ethylene-chlorotrifluoroethylene binary copolymer powder in a blast oven at 150°C for 48 hours to obtain a cross-linked modified ECTFE powder (X-ECTFE);

[0035] (2) Obtain chlorotrifluoroethylene homopolymer suspension A and chlorotrifluoroethylene copolymer (comonomer tetrafluoroethylene) suspension B by suspension polymerization, wherein the melt index of chlorotrifluoroethylene homopolymer is 1.0g / 10min, the melt index of chlorotrifluoroethylene copolymer is 15.1g / 10min;

[0036] (3) Physically mix X-ECTFE obtained in step (1), suspension A and suspension B obtained in step (2), and add dispersant ethanol, wherein chlorotrifluoroethylene homopolymer, chlorotrifluoroethylene The mass ratio of copolymer and X-ECTFE is 91:8:1;

[0037] (4) filtering, washing and drying the mixed solution obtained in step (3) to finally obtain a mixed powder;

[0038] (5) The mixed powder obtained in step (4) is passed through a molding machine to make corresponding tes...

Embodiment 2

[0040] (1) Place the ethylene-chlorotrifluoroethylene binary copolymer powder in a blast oven at 180° C. for 96 hours to obtain cross-linked modified ECTFE powder (X-ECTFE);

[0041] (2) Obtain chlorotrifluoroethylene homopolymer suspension A and chlorotrifluoroethylene copolymer (comonomer ethylene) suspension B by suspension polymerization, wherein the melt index of chlorotrifluoroethylene homopolymer is 0.5g / 10min , the melt index of chlorotrifluoroethylene copolymer is 20.0g / 10min;

[0042] (3) Physically mix X-ECTFE obtained in step (1), suspension A and suspension B obtained in step (2), and add dispersant ethanol, wherein chlorotrifluoroethylene homopolymer, chlorotrifluoroethylene The mass ratio of copolymer and X-ECTFE is 87:12:1;

[0043] (4) filtering, washing and drying the mixed solution obtained in step (3) to finally obtain a mixed powder;

[0044](5) The mixed powder obtained in step (4) is passed through a molding machine to make corresponding test samples, ...

Embodiment 3

[0046] (1) with step (1) in embodiment 2;

[0047] (2) with step (2) in embodiment 2;

[0048] (3) Physically mix X-ECTFE obtained in step (1), suspension A and suspension B obtained in step (2), and add dispersant ethanol, wherein chlorotrifluoroethylene homopolymer, chlorotrifluoroethylene The mass ratio of copolymer and X-ECTFE is 94:5:1;

[0049] (4) with step (4) in embodiment 2;

[0050] (5) With step (5) in embodiment 2. The test results are shown in Table 1.

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Abstract

The invention discloses a polytrifluorochloroethylene resin composition. The polytrifluorochloroethylene resin composition is characterized by comprising a chlorotrifluoroethylene homopolymer, polytrifluorochloroethylene with a high melt index and a cross-linking modified fluororesin material. A chlorotrifluoroethylene homopolymer is selected as matrix resin, high-melt-index polytrifluorochloroethylene is selected as a melt viscosity diluent, a cross-linked and modified fluororesin material is selected as a functional filler, and the uniformly mixed polytrifluorochloroethylene resin composition is obtained in a water phase dispersion form. The obtained composition has good melt flowability and mechanical properties.

Description

technical field [0001] The invention belongs to the application field of fluorine-containing polymers, and in particular relates to a polychlorotrifluoroethylene resin composition. Background technique [0002] It is known that polychlorotrifluoroethylene (PCTFE) is a fluororesin material with good comprehensive properties, especially low permeability and low temperature resistance. However, due to its high melt viscosity and easy decomposition at high temperature, the processing of PCTFE resin is very difficult. At the same time, PCTFE resin is easy to crystallize, resulting in a decrease in the elongation at break of the product, and the toughness of the product cannot meet the requirements. Although the processability and crystallization properties of PCTFE can be effectively improved by copolymerization modification, PCTFE copolymers often sacrifice other properties of the resin, such as permeability and temperature resistance, thereby limiting the application of the re...

Claims

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Application Information

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IPC IPC(8): C08L27/12C08L23/08
CPCC08L27/12C08L2205/03C08L2205/025C08L23/0892
Inventor 孙洪阳周晓勇陈振华江康宝志超王海连
Owner JUHUA GROUP TECH CENT
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