CN102964658A - Capacitor film with low density polyethylene as substrate and preparation method thereof - Google Patents
Capacitor film with low density polyethylene as substrate and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a capacitor film with low density polyethylene as substrate and a preparation method thereof. The capacitor film comprises the following raw materials by weight: 50-55 parts of LDPE (low density polyethylene), 20-25 parts of LLDPE (linear low density polyethylene), 10-15 parts of homo-polymer, 3-5 parts of epoxy linseed oil, 2-3 parts of polyvinyl alcohol, 1-2 parts of aluminum hydroxide, 1-2 parts of polyisobutylene, 8-12 parts of diatomite, 1-2 parts of ferrocene, 0.8-1.2 parts of poly-4-methyl-1-pentene, 5-10 parts of calcium carbonate, 2-4 parts of hydrotalcite, 1.3-1.8 parts of zinc dialkyl dithiophosphate, 0.4-0.6 part of phthalic acid ester, 0.4-0.7 part of smoke sheet rubber, 1-3 parts of zinc stearate and 0.9-1.3 parts of modified wood ash. The invention mainly adopts low density polyethylene assisted with linear low density polyethylene; and various accessories and additives are subjected to mixing and extrusion, blown film sizing and cutting to prepare the capacitor film. The preparation method is simple; and diatomite, hydrotalcite and modified wood ash are added into the raw materials at the same time to enhance barrier property and air tightness of the film; besides, the capacitor film has characteristics of good pressure resistance, impact resistance, high heat sealing strength, and good heat sealing performance.
Description
Technical field
The present invention relates to a kind of capacitor film material, be specifically related to a kind of capacitor film take Low Density Polyethylene as matrix and preparation method thereof.
Background technology
Film capacitor is to work as electrode with tinsel, with itself and poly-ethyl ester, polypropylene, the plastics films such as polystyrene or polycarbonate, overlapping from two ends after, be wound into the electrical condenser of structure cylindraceous; In the middle of all plastics film electric capacity, the characteristic of polypropylene (PP) electric capacity and polystyrene (PS) electric capacity is the most remarkable, certainly the price of these two kinds of electrical condensers is also higher, the film quality of electrical condenser directly affects work-ing life and the product performance of electrical condenser, the demand of capacitor film is large, kind is many, adopt the very difficult requirement that adapts to market of film of single raw material production, but every kind of raw material has its weak point, so the film of producing is difficult to satisfy the demand of various situations.
Summary of the invention
The object of the present invention is to provide a kind of capacitor film take Low Density Polyethylene as matrix and preparation method thereof, it is main that the present invention adopts Low Density Polyethylene, linear low density polyethylene is auxiliary, the common mixing of multiple auxiliary materials additive is extruded, blown film is finalized the design and cutting makes capacitor film, the preparation method is simple, diatomite, hydrotalcite and modification trees ashes in raw material, have been added simultaneously, barrier and the resistance to air loss of film have been strengthened, have good resistance to pressure and shock-resistance, have simultaneously heat seal strength height, characteristics that heat sealability is good.
The present invention adopts following technical scheme to achieve these goals:
Capacitor film take Low Density Polyethylene as matrix, the weight part of its constitutive material is: LDPE Low Density Polyethylene 50-55, LLDPE linear low density polyethylene 20-25, homo-polypropylene 10-15, epoxy Toenol 1140 3-5, polyvinyl alcohol 2-3, aluminium hydroxide 1-2, polyisobutene 1-2, diatomite 8-12, ferrocene 1-2, poly--4-methyl-1-pentene 0.8-1.2, light calcium carbonate 5-10, hydrotalcite 2-4, zinc dialkyl dithiophosphate 1.3-1.8, phthalic ester 0.4-0.6, smoke sheet rubber 0.4-0.7, Zinic stearas 1-3 and modification trees ashes 0.9-1.3.
Capacitor film take Low Density Polyethylene as matrix, the weight part of its constitutive material is: LDPE Low Density Polyethylene 52, LLDPE linear low density polyethylene 22, homo-polypropylene 12, epoxy Toenol 1140 4, polyvinyl alcohol 2.5, aluminium hydroxide 1.5, polyisobutene 1.5, diatomite 10, ferrocene 1.5, poly--4-methyl-1-pentene 1, light calcium carbonate 8, hydrotalcite 3, zinc dialkyl dithiophosphate 1.5, phthalic ester 0.5, smoke sheet rubber 0.55, Zinic stearas 2 and modification trees ashes 1.1.
The preparation method of the capacitor film take Low Density Polyethylene as matrix may further comprise the steps:
(1), take by weighing diatomite by the weight part of constitutive material, first with diatomite with 20-25% hydrogen peroxide dipping 3-4 hour, at 400-450 ℃ of lower roasting 3-4 hour, be ground into 400-45 order powder;
(2), press the weight part of constitutive material with in epoxy Toenol 1140, the polyvinyl alcohol adding mixer, be warming up to 80-85 ℃, add again polyisobutene, aluminium hydroxide, ferrocene stirring after 10-15 minute, add again the diatomite after step (1) is processed, stirring also is heated to 160-170 ℃, add at last homo-polypropylene and stirred 20-30 minute, obtain the modification homo-polypropylene;
(3), take by weighing other constitutive materials by the weight part of constitutive material, then and the modification homo-polypropylene of step (2) after processing mix and stir; Send into extrusion machine fused mass and extrude, melt temperature is 175-195 ℃; Carry out the typing of die head blown film, die head temperature is to raise gradually from bottom to top, and its scope control is at 185-225 ℃; Then traction cutting, last rolling obtains.
The preparation method of described modification trees ashes is Silane coupling agent KH550,0.2-0.3% sodium laurylsulfate and the 1-2% aluminium hydroxide that adds 1-2% in the trees ashes, grinds after high-speed stirring 1-2 hour to obtain.
The melting index of described LDPE Low Density Polyethylene is 1.85-1.93g/10min, density 0.915-0.930g/cm
2The melting index of described LLDPE linear low density polyethylene is 0.94-1.16g/10min, density 0.920-0.933 g/cm
2
Beneficial effect of the present invention:
It is main that the present invention adopts Low Density Polyethylene, linear low density polyethylene is auxiliary, the common mixing of multiple auxiliary materials additive is extruded, blown film is finalized the design and cutting makes capacitor film, the preparation method is simple, diatomite, hydrotalcite and modification trees ashes in raw material, have been added simultaneously, strengthen barrier and the resistance to air loss of film, had good resistance to pressure and shock-resistance, had simultaneously heat seal strength height, characteristics that heat sealability is good.
Embodiment
Embodiment 1: the capacitor film take Low Density Polyethylene as matrix, the weight part of its constitutive material is: LDPE Low Density Polyethylene 52, LLDPE linear low density polyethylene 22, homo-polypropylene 12, epoxy Toenol 1140 4, polyvinyl alcohol 2.5, aluminium hydroxide 1.5, polyisobutene 1.5, diatomite 10, ferrocene 1.5, poly--4-methyl-1-pentene 1, light calcium carbonate 8, hydrotalcite 3, zinc dialkyl dithiophosphate 1.5, phthalic ester 0.5, smoke sheet rubber 0.55, Zinic stearas 2 and modification trees ashes 1.1.
The preparation method of the capacitor film take Low Density Polyethylene as matrix may further comprise the steps:
(1), take by weighing diatomite by the weight part of constitutive material, first with diatomite with 20-25% hydrogen peroxide dipping 3-4 hour, at 400-450 ℃ of lower roasting 3-4 hour, be ground into 400-45 order powder;
(2), press the weight part of constitutive material with in epoxy Toenol 1140, the polyvinyl alcohol adding mixer, be warming up to 80-85 ℃, add again polyisobutene, aluminium hydroxide, ferrocene stirring after 10-15 minute, add again the diatomite after step (1) is processed, stirring also is heated to 160-170 ℃, add at last homo-polypropylene and stirred 20-30 minute, obtain the modification homo-polypropylene;
(3), take by weighing other constitutive materials by the weight part of constitutive material, then and the modification homo-polypropylene of step (2) after processing mix and stir; Send into extrusion machine fused mass and extrude, melt temperature is 175-195 ℃; Carry out the typing of die head blown film, die head temperature is to raise gradually from bottom to top, and its scope control is at 185-225 ℃; Then traction cutting, last rolling obtains.
The preparation method of described modification trees ashes is Silane coupling agent KH550,0.2-0.3% sodium laurylsulfate and the 1-2% aluminium hydroxide that adds 1-2% in the trees ashes, grinds after high-speed stirring 1-2 hour to obtain.
The melting index of described LDPE Low Density Polyethylene is 1.85-1.93g/10min, density 0.915-0.930g/cm
2The melting index of described LLDPE linear low density polyethylene is 0.94-1.16g/10min, density 0.920-0.933 g/cm
2
The Performance Detection of the capacitor film that above-described embodiment 1 makes is as follows:
MFR (g/10min): 34; Tensile strength (Mpa): 41; Heat seal strength: 10.2; Flexural strength (Mpa): 51.2; Modulus in flexure (Mpa): 2234; Frictional coefficient: 0.198; Percent thermal shrinkage (%): 0.9-1.1; Glossiness (%): 87-89.
Claims (5)
1. the capacitor film take Low Density Polyethylene as matrix is characterized in that the weight part of its constitutive material is: LDPE Low Density Polyethylene 50-55, LLDPE linear low density polyethylene 20-25, homo-polypropylene 10-15, epoxy Toenol 1140 3-5, polyvinyl alcohol 2-3, aluminium hydroxide 1-2, polyisobutene 1-2, diatomite 8-12, ferrocene 1-2, poly--4-methyl-1-pentene 0.8-1.2, light calcium carbonate 5-10, hydrotalcite 2-4, zinc dialkyl dithiophosphate 1.3-1.8, phthalic ester 0.4-0.6, smoke sheet rubber 0.4-0.7, Zinic stearas 1-3 and modification trees ashes 0.9-1.3.
2. the capacitor film take Low Density Polyethylene as matrix according to claim 1 is characterized in that the weight part of its constitutive material is: LDPE Low Density Polyethylene 52, LLDPE linear low density polyethylene 22, homo-polypropylene 12, epoxy Toenol 1140 4, polyvinyl alcohol 2.5, aluminium hydroxide 1.5, polyisobutene 1.5, diatomite 10, ferrocene 1.5, poly--4-methyl-1-pentene 1, light calcium carbonate 8, hydrotalcite 3, zinc dialkyl dithiophosphate 1.5, phthalic ester 0.5, smoke sheet rubber 0.55, Zinic stearas 2 and modification trees ashes 1.1.
3. the preparation method of the capacitor film take Low Density Polyethylene as matrix as claimed in claim 1 is characterized in that may further comprise the steps:
(1), take by weighing diatomite by the weight part of constitutive material, first with diatomite with 20-25% hydrogen peroxide dipping 3-4 hour, at 400-450 ℃ of lower roasting 3-4 hour, be ground into 400-45 order powder;
(2), press the weight part of constitutive material with in epoxy Toenol 1140, the polyvinyl alcohol adding mixer, be warming up to 80-85 ℃, add again polyisobutene, aluminium hydroxide, ferrocene stirring after 10-15 minute, add again the diatomite after step (1) is processed, stirring also is heated to 160-170 ℃, add at last homo-polypropylene and stirred 20-30 minute, obtain the modification homo-polypropylene;
(3), take by weighing other constitutive materials by the weight part of constitutive material, then and the modification homo-polypropylene of step (2) after processing mix and stir; Send into extrusion machine fused mass and extrude, melt temperature is 175-195 ℃; Carry out the typing of die head blown film, die head temperature is to raise gradually from bottom to top, and its scope control is at 185-225 ℃; Then traction cutting, last rolling obtains.
4. the capacitor film take Low Density Polyethylene as matrix according to claim 1, it is characterized in that: the preparation method of described modification trees ashes is for adding Silane coupling agent KH550,0.2-0.3% sodium laurylsulfate and the 1-2% aluminium hydroxide of 1-2% in the trees ashes, grinding obtains after high-speed stirring 1-2 hour.
5. the capacitor film take Low Density Polyethylene as matrix according to claim 1, it is characterized in that: the melting index of described LDPE Low Density Polyethylene is 1.85-1.93g/10min, density 0.915-0.930g/cm
2The melting index of described LLDPE linear low density polyethylene is 0.94-1.16g/10min, density 0.920-0.933 g/cm
2
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Cited By (17)
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| CN103214712A (en) * | 2013-03-26 | 2013-07-24 | 安徽双荣电器电缆有限公司 | Cold-tolerant polyethylene cable material and preparation method thereof |
| CN103788450A (en) * | 2013-12-20 | 2014-05-14 | 芜湖金鹰机械科技开发有限公司 | Flame-retardant high temperature-resistant capacitor metallized film with high-density polyethylene as substrate and preparation method thereof |
| CN103804752A (en) * | 2013-12-20 | 2014-05-21 | 芜湖金鹰机械科技开发有限公司 | Capacitor metalized film with pressure resistance, high temperature resistance and favorable performance and preparation method of capacitor metalized film |
| CN103804753A (en) * | 2013-12-20 | 2014-05-21 | 芜湖金鹰机械科技开发有限公司 | Ultrathin fracture-resistant metallized film for capacitor and preparation method thereof |
| CN103834080A (en) * | 2013-12-20 | 2014-06-04 | 芜湖金鹰机械科技开发有限公司 | Low density polyethylene composite metalized film used for capacitor, and preparation method thereof |
| CN103834082A (en) * | 2014-03-04 | 2014-06-04 | 芜湖市艾德森自动化设备有限公司 | Capacitor metallized film with low density polyethylene as matrix and preparation method thereof |
| CN103865147A (en) * | 2014-03-04 | 2014-06-18 | 芜湖市艾德森自动化设备有限公司 | Capacitor metallized film with excellent tensile strength and preparation method thereof |
| CN103951879A (en) * | 2014-04-12 | 2014-07-30 | 安徽江威精密制造有限公司 | Composite isotatic polypropylene capacitor metallized thin film, and preparation method thereof |
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| CN108364787A (en) * | 2017-12-29 | 2018-08-03 | 安徽铜峰电子股份有限公司 | A kind of High-temperature-rescapacitor capacitor film and its capacitor |
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| CN103214712B (en) * | 2013-03-26 | 2015-09-09 | 安徽双荣电器电缆有限公司 | A kind of Cold-tolerant polyethylene cable material and preparation method thereof |
| CN103214712A (en) * | 2013-03-26 | 2013-07-24 | 安徽双荣电器电缆有限公司 | Cold-tolerant polyethylene cable material and preparation method thereof |
| CN103788450A (en) * | 2013-12-20 | 2014-05-14 | 芜湖金鹰机械科技开发有限公司 | Flame-retardant high temperature-resistant capacitor metallized film with high-density polyethylene as substrate and preparation method thereof |
| CN103804752A (en) * | 2013-12-20 | 2014-05-21 | 芜湖金鹰机械科技开发有限公司 | Capacitor metalized film with pressure resistance, high temperature resistance and favorable performance and preparation method of capacitor metalized film |
| CN103804753A (en) * | 2013-12-20 | 2014-05-21 | 芜湖金鹰机械科技开发有限公司 | Ultrathin fracture-resistant metallized film for capacitor and preparation method thereof |
| CN103834080A (en) * | 2013-12-20 | 2014-06-04 | 芜湖金鹰机械科技开发有限公司 | Low density polyethylene composite metalized film used for capacitor, and preparation method thereof |
| CN103834082A (en) * | 2014-03-04 | 2014-06-04 | 芜湖市艾德森自动化设备有限公司 | Capacitor metallized film with low density polyethylene as matrix and preparation method thereof |
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| CN113140407A (en) * | 2020-01-16 | 2021-07-20 | 安徽英和电气有限公司 | Thin film capacitor |
| CN113140407B (en) * | 2020-01-16 | 2022-06-14 | 上海久壬信息科技有限公司 | Thin film capacitor |
| CN116042095A (en) * | 2022-10-18 | 2023-05-02 | 青岛迪恩特尚核新材料科技有限公司 | Modified petrolatum anti-corrosion paste and preparation method thereof |
| CN116042095B (en) * | 2022-10-18 | 2023-08-29 | 青岛迪恩特尚核新材料科技有限公司 | Modified petrolatum anti-corrosion paste and preparation method thereof |
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Effective date of registration: 20220321 Address after: 233000 first floor, building 106, microelectronics technology park, No. 10 Caiyuan Road, Bengbu City, Anhui Province Patentee after: Anhui xinzhida Electronic Technology Co.,Ltd. Address before: 233010 No. 68 Liugong Avenue, Bengbu City, Anhui Province Patentee before: ANHUI YIDA ELECTRONIC Co.,Ltd. |