CN113307991A - FEP master batch with high thermal oxidation stability and processing method thereof - Google Patents
FEP master batch with high thermal oxidation stability and processing method thereof Download PDFInfo
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- CN113307991A CN113307991A CN202110640212.6A CN202110640212A CN113307991A CN 113307991 A CN113307991 A CN 113307991A CN 202110640212 A CN202110640212 A CN 202110640212A CN 113307991 A CN113307991 A CN 113307991A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2427/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2427/18—Homopolymers or copolymers of tetrafluoroethylene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2427/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2427/20—Homopolymers or copolymers of hexafluoropropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/221—Oxides; Hydroxides of metals of rare earth metal
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses an FEP master batch with high thermo-oxidative stability and a processing method thereof, wherein the processing method comprises the following steps: preferably, the weight percentage of the raw materials is 1: 1, weighing a dispersing agent and a stabilizing agent, and placing the materials in a small-sized high-speed mixer for 1: 1, mixing for 3min, taking out the mixed material, weighing the rest dispersant powder, mixing for 5min in a medium-sized high-speed mixer, wherein the mixed material in the medium-sized high-speed mixer comprises 70-80% by mass of FEP, 10-20% by mass of dispersant and 5-10% by mass of stabilizer, and finally placing the mixed material in a granulator for extrusion granulation, wherein the components of the mixed material comprise 70-80% by mass of FEP, 10-20% by mass of dispersant and 5-10% by mass of stabilizer. The invention has simple modification process, no toxic substances are added, and the safety is high; the stabilizing effect is long-acting, the recycled materials are circularly extruded and processed for three times without obvious blackening, and in addition, the strength and the release performance of the FEP film are favorably improved.
Description
Technical Field
The invention relates to the technical field of FEP master batches, in particular to an FEP master batch with high thermal oxidation stability and a processing method thereof.
Background
FEP is totally called fluorinated ethylene propylene, is formed by copolymerizing tetrafluoroethylene and hexafluoropropylene, is commonly called F46, and is a melt-processable fluoroplastic. FEP has excellent heat resistance, chemical resistance, weather resistance and insulation properties, and thus is widely used in the fields of chemical industry, machinery, medical treatment, and the like. The melting point of FEP is as high as 240-270 ℃, although FEP can be formed by thermoplastic processing, the actual processing temperature of FEP film processing needs to be raised to above 370 ℃ in order to improve the film forming property of the melt, and FEP can be decomposed at the temperature of above 420 ℃ or in an inappropriate residence time in a machine, hydrogen fluoride or other fluorine-containing compounds are released, and irreversible damage is caused to equipment and operators. In addition, FEP, as a kind of fluoroplastic, is not degradable, and the "scrap" produced in the current production process or the finished product after use is incinerated or buried, which imposes a great burden on the environment.
Publication No. CN109762083A discloses a stabilization treatment method for unstable end groups of fluoropolymers, which comprises the steps of mixing powder and a fluorinating agent for reaction, granulating, and finally reacting the granulated material with the fluorinating agent to obtain stable fluoropolymer products, wherein the preparation process is complex, the adopted fluorinating agent has high toxicity and strict operation requirements, and in addition, the obtained fluoropolymer products can still be oxidized and discolored after one-time processing; namely, the defects existing in the comparison file are as follows:
1. the preparation process is complicated and the process is complex;
2. the stable modification effect is poor, the long-acting thermal stability is poor, and the particles generate blackening phenomena of different degrees after being recycled and granulated.
Disclosure of Invention
The invention aims to provide FEP master batch with high thermo-oxidative stability and a processing method thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a processing method of FEP master batch with high thermal oxidation stability comprises the following steps: preferably, the weight percentage of the raw materials is 1: 1 weighing FEP and stabilizer, and placing in a small-sized high-speed mixer to perform the following steps of 1: 1, mixing for 3min, taking out the mixed material, weighing the rest FEP powder, mixing for 5min in a medium-sized high-speed mixer, wherein the mixed material in the medium-sized high-speed mixer comprises 70-80% of FEP, 10-20% of a dispersing agent and 5-10% of a stabilizing agent by mass percent, and finally placing the mixture in a granulator for extrusion granulation.
Preferably, the temperature of the mixture placed in the small high-speed mixer and the medium high-speed mixer is below 60 ℃.
Preferably, the granulator adopts a double-screw extrusion granulator, the length-diameter ratio of the double-screw extrusion granulator is 20-32, the compression ratio is 2-4, the extrusion processing temperature is 250-330 ℃, and the extruded particles have regular shapes and uniform sizes.
Preferably, the stabilizer refers to a rare earth stabilizer complex.
Preferably, the rare earth stabilizer complex comprises an organic rare earth and a rare earth oxide, wherein the ratio of the organic rare earth to the rare earth oxide is 2: 1.
Preferably, the organic rare earth is acrylic rare earth or methacrylic rare earth.
Preferably, the rare earth acrylate is rhenium acrylate, and the rare earth methacrylate is rhenium methacrylate.
Preferably, the rare earth oxide is rhenium oxide.
An FEP master batch with high thermal oxidation stability comprises FEP, a dispersing agent and a stabilizing agent, wherein the FEP, the dispersing agent and the stabilizing agent are respectively 70-80% by mass, 10-20% by mass and 5-10% by mass.
Compared with the prior art, the invention has the beneficial effects that:
the invention has simple modification process, no toxic substances are added, and the safety is high; the stable effect is long-acting, the recycled material is circularly extruded and processed for three times without obvious blackening, and in addition, the strength and the release performance of the FEP film are also obviously improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The invention provides a technical scheme that: an FEP master batch with high thermal oxidation stability and a processing method thereof comprise:
FEP: the powder is fluorinated ethylene propylene, and the melting rate is 5 g/min;
the implementation mode is as follows:
wherein the proportion of the stabilizer is as follows: rhenium acrylate: rhenium oxide ═ 2: 1;
firstly, weighing 300g of rhenium acrylate and 150g of rhenium oxide according to the formula, and putting the weighed rhenium acrylate and rhenium oxide with 450g of FEP powder in a small high-speed mixer to perform the following steps of 1: 1, mixing for 3min, taking out the mixed material, weighing the residual 3600g of FEP powder, mixing for 5min in a medium-sized high-speed mixer, controlling the temperature below 60 ℃ in the mixing process, sieving by using a 500-mesh sieve, and finally placing in a double-screw extrusion granulator for extrusion granulation, wherein the length-diameter ratio of the adopted double-screw extrusion granulator is 20, the compression ratio is 2, the extrusion processing temperature is 250-330 ℃, and the particles are required to be regular in shape and uniform in size.
Example 2
The invention provides a technical scheme that: an FEP master batch with high thermal oxidation stability and a processing method thereof comprise:
FEP: the powder is fluorinated ethylene propylene, and the melting rate is 22 g/min;
the implementation mode is as follows:
wherein the proportion of the stabilizer is as follows: rhenium methacrylate/rhenium oxide ═ 2: 1;
firstly, 200g of rhenium methacrylate and 100g of rhenium oxide are weighed according to the formula, and the weighed rhenium methacrylate and rhenium oxide are mixed with 300g of FEP powder in a small high-speed mixer to perform the mixing process of the components in the ratio of 1: 1, mixing for 3min, taking out the mixed material, weighing the rest 900g of FEP powder, mixing for 5min in a medium-sized high-speed mixer, controlling the temperature below 60 ℃ in the mixing process, sieving by using a 500-mesh sieve, and finally placing in a double-screw extrusion granulator for extrusion granulation, wherein the length-diameter ratio of the adopted double-screw extrusion granulator is 26, the compression ratio is 3, the extrusion processing temperature is 250-330 ℃, and the particles are required to be regular in shape and uniform in size.
Example 3
The invention provides a technical scheme that: an FEP master batch with high thermal oxidation stability and a processing method thereof comprise:
FEP: the powder is fluorinated ethylene propylene, and the melting rate is 40 g/min;
the implementation mode is as follows:
wherein the proportion of the stabilizer is as follows: rhenium methacrylate/rhenium oxide ═ 2: 1;
firstly, 400g of rhenium methacrylate and 200g of rhenium oxide are weighed according to the formula, and then mixed with 600g of FEP powder in a small high-speed mixer to perform the mixing process of 1: 1, mixing for 3min, taking out the mixed material, weighing the rest 800g of FEP powder, mixing for 5min in a medium-sized high-speed mixer, controlling the temperature below 60 ℃ in the mixing process, sieving by using a 500-mesh sieve, and finally placing in a double-screw extrusion granulator for extrusion granulation, wherein the length-diameter ratio of the adopted double-screw extrusion granulator is 32, the compression ratio is 4, the extrusion processing temperature is 250-330 ℃, and the particles are required to be regular in shape and uniform in size.
In the above embodiment, the FEP and the stabilizer are 70-90% and 10-30% by mass, respectively.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A processing method of FEP master batch with high thermo-oxidative stability is characterized by comprising the following steps: preferably, the weight percentage of the raw materials is 1: 1, weighing a dispersing agent and a stabilizing agent, and placing the materials in a small-sized high-speed mixer for 1: 1, mixing for 3min, mixing the mixed material and the rest dispersant powder in a medium-sized high-speed mixer for 5min, wherein the mixed material in the medium-sized high-speed mixer comprises 70-80% of FEP, 10-20% of dispersant and 5-10% of stabilizer by mass percent, and finally placing the mixed material in a granulator for extrusion granulation.
2. The FEP master batch with high thermo-oxidative stability and the processing method thereof as claimed in claim 1, wherein: the granulator adopts a double-screw extrusion granulator, the length-diameter ratio of the double-screw extrusion granulator is 20-32, the compression ratio is 2-4, the extrusion processing temperature is 250-330 ℃, and the extruded particles have regular shapes and uniform sizes.
3. The FEP master batch with high thermo-oxidative stability and the processing method thereof as claimed in claim 1, wherein: the dispersing agent is tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride copolymer.
4. The FEP master batch with high thermo-oxidative stability and the processing method thereof as claimed in claim 1, wherein: the stabilizer is a rare earth stabilizer complex.
5. The FEP master batch with high thermo-oxidative stability and the processing method thereof as claimed in claim 4, wherein: the rare earth stabilizer complex refers to an organic rare earth stabilizer and an inorganic rare earth stabilizer, and the ratio of the organic rare earth stabilizer to the inorganic rare earth stabilizer is 2: 1.
6. The FEP master batch with high thermo-oxidative stability and the processing method thereof as claimed in claim 5, wherein: the organic rare earth stabilizer refers to acrylic or methacrylic rare earth.
7. The FEP master batch with high thermo-oxidative stability and the processing method thereof as claimed in claim 5, wherein: the inorganic rare earth stabilizer refers to rare earth oxide.
8. The FEP master batch with high thermo-oxidative stability and the processing method thereof as claimed in claim 7, wherein: the rare earth oxide is rhenium oxide.
9. The FEP master batch with high thermo-oxidative stability and the processing method thereof as claimed in claim 6, wherein: the acrylic rare earth is rhenium acrylate, and the methacrylic rare earth is rhenium methacrylate.
10. An FEP master batch with high thermal oxidation stability is characterized by comprising FEP, a dispersing agent and a stabilizing agent, wherein the FEP, the dispersing agent and the stabilizing agent are 70-80% by mass, 10-20% by mass and 5-10% by mass respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110640212.6A CN113307991A (en) | 2021-06-08 | 2021-06-08 | FEP master batch with high thermal oxidation stability and processing method thereof |
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| CN202110640212.6A CN113307991A (en) | 2021-06-08 | 2021-06-08 | FEP master batch with high thermal oxidation stability and processing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114920961A (en) * | 2022-05-30 | 2022-08-19 | 中山市高德宝线缆有限公司 | A kind of preparation method of polyperfluoroethylene propylene color masterbatch |
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| WO1992002565A1 (en) * | 1990-08-07 | 1992-02-20 | S.C. Johnson & Son, Inc. | Concentrates for plastics |
| WO2007120122A1 (en) * | 2006-01-31 | 2007-10-25 | Dupont-Mitsui Fluorochemicals Co Ltd. | Melt processible fluoropolymer composition containing nano particles |
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| CN103921366A (en) * | 2014-03-19 | 2014-07-16 | 浙江歌瑞新材料有限公司 | FEP color particle production process |
| CN108250638A (en) * | 2018-01-18 | 2018-07-06 | 湖州讯腾电缆材料科技有限公司 | The processing method that a kind of FEP has colorant |
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| CN109679257A (en) * | 2018-12-25 | 2019-04-26 | 金华永和氟化工有限公司 | A kind of FEP color resin formula |
-
2021
- 2021-06-08 CN CN202110640212.6A patent/CN113307991A/en active Pending
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| WO2007120122A1 (en) * | 2006-01-31 | 2007-10-25 | Dupont-Mitsui Fluorochemicals Co Ltd. | Melt processible fluoropolymer composition containing nano particles |
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| CN103497464A (en) * | 2013-10-24 | 2014-01-08 | 周志坚 | FEP fluorine color master batch and processing technique thereof |
| CN103921366A (en) * | 2014-03-19 | 2014-07-16 | 浙江歌瑞新材料有限公司 | FEP color particle production process |
| CN108250638A (en) * | 2018-01-18 | 2018-07-06 | 湖州讯腾电缆材料科技有限公司 | The processing method that a kind of FEP has colorant |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114920961A (en) * | 2022-05-30 | 2022-08-19 | 中山市高德宝线缆有限公司 | A kind of preparation method of polyperfluoroethylene propylene color masterbatch |
| CN114920961B (en) * | 2022-05-30 | 2025-01-07 | 中山市高德宝线缆有限公司 | A method for preparing poly(perfluoroethylene propylene) masterbatch |
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