CN116396558A - High dielectric property polypropylene film based on ash removal and preparation method thereof - Google Patents
High dielectric property polypropylene film based on ash removal and preparation method thereof Download PDFInfo
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- CN116396558A CN116396558A CN202310235470.5A CN202310235470A CN116396558A CN 116396558 A CN116396558 A CN 116396558A CN 202310235470 A CN202310235470 A CN 202310235470A CN 116396558 A CN116396558 A CN 116396558A
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- polypropylene
- polypropylene film
- deashing
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- 239000004743 Polypropylene Substances 0.000 title claims abstract description 75
- -1 polypropylene Polymers 0.000 title claims abstract description 75
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 75
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 21
- 229910021645 metal ion Inorganic materials 0.000 claims abstract description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 238000007731 hot pressing Methods 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 230000010355 oscillation Effects 0.000 claims description 5
- OXWDLAHVJDUQJM-UHFFFAOYSA-N 2-[[2-[2-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]ethylamino]-2-oxoacetyl]amino]ethyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCCNC(=O)C(=O)NCCOC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 OXWDLAHVJDUQJM-UHFFFAOYSA-N 0.000 claims description 4
- MZZYGYNZAOVRTG-UHFFFAOYSA-N 2-hydroxy-n-(1h-1,2,4-triazol-5-yl)benzamide Chemical compound OC1=CC=CC=C1C(=O)NC1=NC=NN1 MZZYGYNZAOVRTG-UHFFFAOYSA-N 0.000 claims description 4
- OMCYEZUIYGPHDJ-OQLLNIDSSA-N chembl354261 Chemical compound OC1=CC=CC=C1\C=N\NC(=O)C1=CC=CC=C1O OMCYEZUIYGPHDJ-OQLLNIDSSA-N 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims 3
- 230000015556 catabolic process Effects 0.000 abstract description 9
- 238000009413 insulation Methods 0.000 abstract description 6
- 239000010408 film Substances 0.000 description 40
- 230000000052 comparative effect Effects 0.000 description 9
- 230000005684 electric field Effects 0.000 description 6
- 239000000969 carrier Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011104 metalized film Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- 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
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The invention discloses a high dielectric property polypropylene film based on ash removal and a preparation method thereof, S1, a metal ion passivating agent is put into a drying device for drying; s2, putting the metal ion passivating agent dried in the step S1 into an ethanol solution to obtain a deashing solution; s3, mixing the deashing solution in the step S2 with polypropylene, magnetically stirring, and then filtering and drying the mixture to obtain deashed polypropylene; s4, putting the deashing polypropylene in the S3 into a hot-pressing tablet press to obtain a sample; s5, keeping the pressure in the step S4 unchanged, reducing the temperature of the sample to 90-140 ℃ by using a cooling device, taking out the sample, and placing the sample in a natural environment to cool to room temperature to obtain the deashing polypropylene film sample. The high-dielectric-property polypropylene film based on ash removal and the preparation method thereof have the advantages that the dielectric property of the polypropylene film is improved, the breakdown strength of the film is improved, the conductivity of the film is reduced, and the occurrence of insulation failure faults is avoided.
Description
Technical Field
The invention relates to the technical field of polypropylene films, in particular to a high-dielectric-property polypropylene film based on ash removal and a preparation method thereof.
Background
The high-voltage direct-current metallized film capacitor is used as core equipment of a high-voltage direct-current transmission system and plays important roles in filtering, voltage supporting, voltage equalizing and the like in a converter station. With the rise of voltage class, the voltage class requirement for polypropylene insulation for capacitors is gradually increased, and the insulation problems of low breakdown field strength and high dielectric loss are the main problems faced by polypropylene films. Ash is used as a key index for representing the impurity content of the polypropylene material, carriers are easily ionized under the action of an electric field, so that the electric conduction loss is increased, the local electric field in the film is distorted, the breakdown field intensity is reduced, and finally, insulation faults can be possibly caused, and the safe and stable operation of the whole direct current transmission system is threatened.
Disclosure of Invention
The invention aims to provide a polypropylene film with high dielectric property based on ash removal and a preparation method thereof, which are used for improving the dielectric property of the polypropylene film, improving the breakdown strength of the film, reducing the conductivity of the film and avoiding the occurrence of insulation failure faults.
To achieve the above object, the present invention provides a high dielectric property polypropylene film based on ash removal, comprising polypropylene and a metal ion deactivator.
Preferably, the metal ion passivating agent is one or more of Mark CDA-1, chel-180 and Naugard XL-1.
The preparation method of the high dielectric property polypropylene film based on ash removal comprises the following steps: s1, putting a metal ion passivator into a drying device for drying at 40-60 ℃ for 12-36h;
s2, placing the metal ion passivating agent dried in the step S1 into an ethanol solution, and carrying out ultrasonic oscillation for 0.5-3h to obtain a deashing solution;
s3, mixing the deashing solution in the S2 with polypropylene, magnetically stirring for 0.5-2.5h at 20-60 ℃, and then filtering and drying the mixture to obtain deashed polypropylene;
s4, putting the deashing polypropylene in the step S3 into a hot-pressing tablet press to obtain a sample, setting the sample for 5-20min at the setting temperature of 175-195 ℃ and the pressure of 18-25MPa;
s5, keeping the pressure in the step S4 unchanged, reducing the temperature of the sample to 90-140 ℃ by using a cooling device, taking out the sample, and placing the sample in a natural environment to cool to room temperature to obtain the deashing polypropylene film sample.
Preferably, the amount of the metal ion passivating agent in S2 is 0.01-1g.
Preferably, the thickness of the sample of the deashed polypropylene film in S5 is 15-30. Mu.m.
Therefore, the ash removal-based high-dielectric polypropylene film and the preparation method thereof have the beneficial effects that:
1. the dielectric property of the polypropylene film is improved, the breakdown strength of the film is improved, the conductivity of the film is reduced, and the occurrence of insulation failure faults is avoided;
2. the polypropylene is treated by deashing of the metal ion passivating agent, the metal ion passivating agent and ash form a stable chelating structure, the trap characteristic of the film is improved, ionic carriers are reduced, the transportation of the carriers is inhibited, and the dielectric property of the polypropylene film is improved;
3. the polypropylene is treated by deashing through the metal ion passivating agent, so that the operation is simple and the cost is low.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
Fig. 1 is a graph of breakdown strength tests of examples 1-3 and comparative example 1;
FIG. 2 is a graph of the conductivity of examples 1-3 and comparative example 1 at different test electric fields and test temperatures.
Detailed Description
The technical scheme of the invention is further described below through the attached drawings and the embodiments.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
Example 1
The polypropylene is PPH-T03 produced by Hainan petrochemical industry.
S1, putting Mark CDA-1 into a drying device for drying at the drying temperature of 50 ℃ for 24 hours.
S2, putting 0.1g of the Mark CDA-1 dried in the S1 into 100ml of ethanol solution, and carrying out ultrasonic oscillation for 1h to obtain a deashing solution.
S3, mixing the deashing solution in the step S2 with polypropylene, magnetically stirring for 2.5 hours at 40 ℃, and then filtering and drying the mixture to obtain the deashed polypropylene.
S4, placing the deashing polypropylene in the step S3 into a hot-pressing tablet press to obtain a sample, setting the sample for 5 minutes at the setting temperature of 180 ℃ and the pressure of 20MPa.
And S5, keeping the pressure in the step S4 unchanged, reducing the temperature of the sample to 120 ℃ by using a cooling device, taking out the sample, and placing the sample in a natural environment to cool to room temperature to obtain the deashing polypropylene film sample.
The deashing polypropylene film samples in this example were designated MC-0.1-2.5-40, where 0.1 was 0.1g mark CDA-1,2.5 was the deashing time 2.5h, and 40 was the deashing temperature 40 ℃.
Example 2
The polypropylene is PPH-T03 produced by Hainan petrochemical industry.
S1, putting Chel-180 into a drying device for drying at the drying temperature of 50 ℃ for 24 hours.
S2, putting 0.05g of the dried Chel-180 in the S1 into 100ml of ethanol solution, and carrying out ultrasonic oscillation for 1h to obtain a deashing solution.
S3, mixing the deashing solution in the step S2 with polypropylene, magnetically stirring for 1.5 hours at the temperature of 30 ℃, and then filtering and drying the mixture to obtain the deashed polypropylene.
S4, placing the deashing polypropylene in the step S3 into a hot-pressing tablet press to obtain a sample, setting the sample for 5 minutes at the setting temperature of 180 ℃ and the pressure of 20MPa.
And S5, keeping the pressure in the step S4 unchanged, reducing the temperature of the sample to 120 ℃ by using a cooling device, taking out the sample, and placing the sample in a natural environment to cool to room temperature to obtain the deashing polypropylene film sample.
The deashing polypropylene film samples in this example were designated CH-0.05-1.5-30, where 0.05g Chel-180,1.5 is the deashing time 1.5h and 30 is the deashing temperature 30 ℃.
Example 3
The polypropylene is PPH-T03 produced by Hainan petrochemical industry.
S1, placing Naugard XL-1 into a drying device for drying at a drying temperature of 50 ℃ for 24 hours.
S2, putting 0.05g of dried Naugard XL-1 in the S1 into 100ml of ethanol solution, and carrying out ultrasonic oscillation for 1h to obtain a deashing solution.
S3, mixing the deashing solution in the step S2 with polypropylene, magnetically stirring for 1.5 hours at the temperature of 30 ℃, and then filtering and drying the mixture to obtain the deashed polypropylene.
S4, placing the deashing polypropylene in the step S3 into a hot-pressing tablet press to obtain a sample, setting the sample for 5 minutes at the setting temperature of 180 ℃ and the pressure of 20MPa.
And S5, keeping the pressure in the step S4 unchanged, reducing the temperature of the sample to 120 ℃ by using a cooling device, taking out the sample, and placing the sample in a natural environment to cool to room temperature to obtain the deashing polypropylene film sample.
The sample of the deashed polypropylene film in this example was designated NX-0.05-1.5-30, where 0.05 was 0.05g Naugard XL-1,1.5 was the deashing time of 1.5h, and 30 was the deashing temperature of 30 ℃.
Example 4
The breakdown strength test was conducted on the deashed polypropylene film of examples 1-3 and the polypropylene film sample of comparative example 1, and as shown in FIG. 1, it was found that the metal ion passivating agent improved the breakdown strength of the deashed polypropylene film sample of examples 1-3. The comparison of the sample of the deashed polypropylene film of example 2 with the sample of the polypropylene film of comparative example 1 shows that the sample of the deashed polypropylene film of example 2 has an improvement of 34.9% in breakdown strength and the improvement is optimal.
Example 5
The DC conductivities of the deashed polypropylene films of examples 1-3 and the polypropylene film samples of comparative example 1 were tested at different test electric fields and different test temperatures, and as shown in FIG. 2, the electric conductivities of the deashed polypropylene films of examples 1-3 and the polypropylene film samples of comparative example 1 were improved with the increase of the test electric field or the test temperature, but the enhancement degree of the deashed polypropylene films of examples 1-3 was significantly lower than that of the polypropylene film samples of comparative example 1. It is known that the deashing solution enables the conductivity of the deashed polypropylene film sample to be significantly inhibited by the sensitivity of the test electric field and the test temperature variation.
Comparative example 1
The polypropylene is PPH-T03 produced by Hainan petrochemical industry.
S1, placing polypropylene into a hot-pressing tablet press to obtain a sample, setting the sample for 5 minutes at 180 ℃ and under 20MPa.
S2, keeping the pressure in the step S1 unchanged, cooling the temperature of the sample to 120 ℃ by using a cooling device, taking out the sample, and placing the sample in a natural environment to cool to room temperature to obtain the polypropylene film sample.
The polypropylene film sample in this comparative example was designated PP0.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting it, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that: the technical scheme of the invention can be modified or replaced by the same, and the modified technical scheme cannot deviate from the spirit and scope of the technical scheme of the invention.
Claims (5)
1. The high dielectric property polypropylene film based on ash removal is characterized in that: including polypropylene and metal ion deactivators.
2. The ash removal based high dielectric properties polypropylene film according to claim 1, wherein: the metal ion passivating agent is one or more of Mark CDA-1, chel-180 and Naugard XL-1.
3. The ash removal based high dielectric properties polypropylene film production process according to any one of claims 1 to 2, wherein: s1, putting a metal ion passivator into a drying device for drying at 40-60 ℃ for 12-36h;
s2, placing the metal ion passivating agent dried in the step S1 into an ethanol solution, and carrying out ultrasonic oscillation for 0.5-3h to obtain a deashing solution;
s3, mixing the deashing solution in the S2 with polypropylene, magnetically stirring for 0.5-2.5h at 20-60 ℃, and then filtering and drying the mixture to obtain deashed polypropylene;
s4, putting the deashing polypropylene in the step S3 into a hot-pressing tablet press to obtain a sample, setting the sample for 5-20min at the setting temperature of 175-195 ℃ and the pressure of 18-25MPa;
s5, keeping the pressure in the step S4 unchanged, reducing the temperature of the sample to 90-140 ℃ by using a cooling device, taking out the sample, and placing the sample in a natural environment to cool to room temperature to obtain the deashing polypropylene film sample.
4. The ash removal based high dielectric property polypropylene film production method according to claim 3, wherein: the dosage of the metal ion passivating agent in S2 is 0.01-1g.
5. The ash removal based high dielectric property polypropylene film production method according to claim 3, wherein: the thickness of the sample of the deashed polypropylene film in S5 is 15-30 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310235470.5A CN116396558A (en) | 2023-03-13 | 2023-03-13 | High dielectric property polypropylene film based on ash removal and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310235470.5A CN116396558A (en) | 2023-03-13 | 2023-03-13 | High dielectric property polypropylene film based on ash removal and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102010548A (en) * | 2010-09-27 | 2011-04-13 | 松下家电研究开发（杭州）有限公司 | Glass fiber reinforced polypropylene material and hydrolysis resistance and oxidation resistance evaluation method thereof |
| CN115340709A (en) * | 2022-08-10 | 2022-11-15 | 山东省临沂市三丰化工有限公司 | Antioxidant stabilizer composition, polypropylene special material and preparation method of polypropylene special material |
| US20220372259A1 (en) * | 2019-10-22 | 2022-11-24 | Lumet Technologies Ltd. | Transferable composition and methods for preparing and using the same |
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2023
- 2023-03-13 CN CN202310235470.5A patent/CN116396558A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102010548A (en) * | 2010-09-27 | 2011-04-13 | 松下家电研究开发（杭州）有限公司 | Glass fiber reinforced polypropylene material and hydrolysis resistance and oxidation resistance evaluation method thereof |
| US20220372259A1 (en) * | 2019-10-22 | 2022-11-24 | Lumet Technologies Ltd. | Transferable composition and methods for preparing and using the same |
| CN115340709A (en) * | 2022-08-10 | 2022-11-15 | 山东省临沂市三丰化工有限公司 | Antioxidant stabilizer composition, polypropylene special material and preparation method of polypropylene special material |
Non-Patent Citations (1)
| Title |
|---|
| BOXUE DU 等: "Dielectric Breakdown Performance of Deashed Polypropylene for HVDC Film Capacitors", 《IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION》, vol. 29, no. 6, pages 2209 - 2217, XP011931231, DOI: 10.1109/TDEI.2022.3203659 * |
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