CN104086811A - Special filler for storage-resistant capacitor film and preparation method of special filler - Google Patents

Abstract

The invention provides special filler for a storage-resistant capacitor film. The special filler is prepared from the following raw materials in parts by weight: 6-8 parts of CPE (Chlorinated Polyethylene) resin, 0.5-0.8 part of trioctyl triphenylphosphate, 1-2 parts of urea formaldehyde resin, 6-8 parts of aluminum hydroxide, 3-5 parts of magnetic iron ores, 1.3-1.5 parts of acrylate resin, 2-3 parts of cerium oxide, 5-7 parts of titanium oxide, 1-2 parts of tridecenylsuccinic acid, 0.3-0.5 part of silane coupling agent, 0.4-0.6 part of dibutyl benzoate, 60-65 parts of loess, a proper amount of 4-6% hydrochloric acid, a proper amount of water and 15-20 parts of adjuvant. The filler provided by the invention can be used for improving the size stability, tensile strength and wear resistance of a polypropylene film and delaying the aging of the capacitor film and is favorable in oil resistance, heat resistance, flame retardance, sunlight resistance, ozone resistance, acid and alkaline resistance and chemical reagent resistance; due to the addition of loess, the cost is reduced; and due to the adoption of adjuvant, the dispersibility and reinforcing property of the filler can be improved, and the strength and impact toughness of the film can be improved.

Description

A kind of film of resistance to reservior capacitor filler special and preparation method thereof

Technical field

The invention belongs to capacitor film field, the particularly a kind of film of resistance to reservior capacitor filler special and preparation method thereof.

Background technology

Film capacitor, owing to having a lot of good characteristics, is therefore the outstanding electrical condenser of a kind of performance.Its property such as main is as follows: nonpolarity, insulation impedance is very high, frequency response characteristic excellent (frequency response is broad), and also dielectric loss is very little.Advantage based on above, so film capacitor is used on mimic channel in a large number.Especially in the part of signal commissure, necessary frequency of utilization characteristic is good, and the electrical condenser that dielectric loss is extremely low can guarantee that signal is when transmitting, and does not have too large distortion situation and occurs.

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, thus in recent years PP electric capacity and PS electric capacity to be used in frequency and the quantity of sound appliances also more and more high.Simple polypropylene (PP) is although that film has is heat-resisting, corrosion-resistant, the outstanding advantages of goods used vapour sterilization, and also density is little, is the lightest general-purpose plastics; But it exists low-temperature impact resistance poor, easy aging shortcoming.Polystyrene (PS) film has high transparency, and electrical insulation capability is good, easy coloring, and processing fluidity is good, and good rigidly and chemical resistance are good, but more crisp, and shock strength is low, is prone to stress cracking, poor heat resistance and not resistance to boiling water; Therefore need to carry out modification to film.And along with the range of application of electrical condenser increases gradually, the performance of film also needs to improve, such as heat-resisting, low temperature resistant, acid and alkali-resistance, corrosion-resistant, intensity, ageing-resistant, UV resistant, fire-retardant, wear-resisting, toughness, the performance need such as shock-resistant improve, can be by adding the filler modified performance of improving.

Summary of the invention

The object of the present invention is to provide a kind of film of resistance to reservior capacitor filler special and preparation method thereof, this filler can improve the dimensional stability of polypropylene film, improve tensile strength, wear resistance, there is good oil resistant, heat-resisting, resistance to combustion, resistance to daylight, resistance to ozone, the performance of acid and alkali-resistance, chemical-resistant reagent, can delay the aging speed of capacitor film.

Technical scheme of the present invention is as follows:

The film of a resistance to reservior capacitor filler special, is characterized in that being made by the raw material of following weight part: CPE resin 6-8, phosphorus benzene tricarboxylic acid three monooctyl ester 0.5-0.8, urea-formaldehyde resin 1-2, aluminium hydroxide 6-8, magnetite 3-5, acrylate resin 1.3-1.5, cerium oxide 2-3, titanium oxide 5-7, tridecylene base succinic acid 1-2, silane coupling agent 0.3-0.5, phenylformic acid dibutylester 0.4-0.6, loess 60-65,4-6% hydrochloric acid is appropriate, water appropriate, auxiliary agent 15-20;

Described auxiliary agent is made by the raw material of following weight parts: kaolin 5-7,2-2.5% sodium hydroxide solution 20-25, glyceryl monostearate 0.2-0.3, methacrylic ester 1-2, ethyl propenoate 0.4-0.7, activated calcium carbonate 10-15, ten trifluoro octyl group Trimethoxy silane 0.6-0.8, nano-graphite 1-1.3, tea saponin 0.1-0.2, Fruit of Cherokee Rose essential oil 0.1-0.2, Potassium Persulphate 0.1-0.2, water are appropriate; Preparation method is: kaolin mixes with 2-2.5% sodium hydroxide solution, be heated to 70-80 ℃, stirring reaction 20-30 minute, filter, obtain filter residue, being washed to pH is 7-9, ovendry power is broken into the particle of 2-50 μ m, then spray into while stirring ten trifluoro octyl group Trimethoxy silanes, grind 20-25 minute, obtain modified kaolin; Again tea saponin is added in suitable quantity of water, add again activated calcium carbonate, after stirring, add glyceryl monostearate, methacrylic ester, ethyl propenoate, after stirring, be warming up to 70-80 ℃, add Potassium Persulphate, stirring reaction 20-30 minute, then add nano-graphite, continue stirring reaction 30-40 minute, dry, mix with modified kaolin and other remaining components, dispersion grinding becomes the particle of 2-50 μ m, obtains.

The preparation method of the described film of resistance to reservior capacitor filler special, is characterized in that comprising the following steps:

(1) loess is sent in calcining furnace, at 700-800 ℃, calcined 2-3 hour, take out and pulverize, cross 100 mesh sieves, then add 2-3 4-6% hydrochloric acid doubly, be heated to 50-70 ℃, stir 10-20 minute, filter, obtain filter residue, pickling once, then is washed to neutrality more as stated above, filters, and obtains particle;

(2) magnetite is pulverized, crossed 100 mesh sieves, mix with CPE resin, phosphorus benzene tricarboxylic acid three monooctyl esters, urea-formaldehyde resin, acrylate resin, tridecylene base succinic acid, silane coupling agent, phenylformic acid dibutylester, grind 20-30 minute, obtain mixture;

(3) material (1) step and (2) step being obtained mixes with cerium oxide, titanium oxide, aluminium hydroxide, adds suitable quantity of water to stir into mud shape, grinds to form the slurry of 2-50 μ m, and spraying is dry, then mixes with other remaining components, obtains.

Beneficial effect of the present invention

Filler of the present invention can improve the dimensional stability of polypropylene film, improves tensile strength, wear resistance, has good oil resistant, heat-resisting, resistance to combustion, and resistance to daylight, resistance to ozone, the performance of acid and alkali-resistance, chemical-resistant reagent, can delay the aging speed of capacitor film; By using loess, reduced cost; The application of the invention auxiliary agent, can improve dispersiveness, the reinforcing property of filler, can improve thin film strength and tough.

Embodiment

The film of a resistance to reservior capacitor filler special, by following weight part (kilogram) raw material make: CPE resin 7, phosphorus benzene tricarboxylic acid three monooctyl esters 0.7, urea-formaldehyde resin 1.5, aluminium hydroxide 7, magnetite 4, acrylate resin 1.4, cerium oxide 2.5, titanium oxide 6, tridecylene base succinic acid 1.5, silane coupling agent 0.4, phenylformic acid dibutylester 0.5, loess 63,5% hydrochloric acid are appropriate, water appropriate, auxiliary agent 17;

Described auxiliary agent by following weight parts (kilogram) raw material make: kaolin 6,2.3% sodium hydroxide solution 23, glyceryl monostearate 0.2, methacrylic ester 1.5, ethyl propenoate 0.6, activated calcium carbonate 13, ten trifluoro octyl group Trimethoxy silanes 0.7, nano-graphite 1.2, tea saponin 0.1, Fruit of Cherokee Rose essential oil 0.1, Potassium Persulphate 0.1, water are appropriate; Preparation method is: kaolin mixes with 2.3% sodium hydroxide solution, be heated to 75 ℃, stirring reaction 25 minutes, filter, obtain filter residue, being washed to pH is 8, ovendry power is broken into the particle of 2-50 μ m, then spray into while stirring ten trifluoro octyl group Trimethoxy silanes, grind 23 minutes, obtain modified kaolin; Again tea saponin is added in suitable quantity of water, add again activated calcium carbonate, after stirring, add glyceryl monostearate, methacrylic ester, ethyl propenoate, after stirring, be warming up to 75 ℃, add Potassium Persulphate, stirring reaction 25 minutes, then add nano-graphite, continue stirring reaction 35 minutes, dry, mix with modified kaolin and other remaining components, dispersion grinding becomes the particle of 2-50 μ m, obtains.

The preparation method of the described film of resistance to reservior capacitor filler special, comprises the following steps:

(1) loess is sent in calcining furnace, at 750 ℃, calcined 2.5 hours, take out and pulverize, cross 100 mesh sieves, then add 5% hydrochloric acid of 2.5 times, be heated to 60 ℃, stir 15 minutes, filter, obtain filter residue, pickling once, then is washed to neutrality more as stated above, filters, and obtains particle;

(2) magnetite is pulverized, crossed 100 mesh sieves, mix with CPE resin, phosphorus benzene tricarboxylic acid three monooctyl esters, urea-formaldehyde resin, acrylate resin, tridecylene base succinic acid, silane coupling agent, phenylformic acid dibutylester, grind 25 minutes, obtain mixture;

(3) material (1) step and (2) step being obtained mixes with cerium oxide, titanium oxide, aluminium hydroxide, adds suitable quantity of water to stir into mud shape, grinds to form the slurry of 2-50 μ m, and spraying is dry, then mixes with other remaining components, obtains.

Experimental data: the filler of the present embodiment is added in polypropylene capacitor film, and addition is 10-15%, film thickness is 2-50 μ m, film breakdown magnitude of voltage >=0.60kV/ μ m(100 ℃).

Claims (2)

1. the film of a resistance to reservior capacitor filler special, is characterized in that being made by the raw material of following weight part: CPE resin 6-8, phosphorus benzene tricarboxylic acid three monooctyl ester 0.5-0.8, urea-formaldehyde resin 1-2, aluminium hydroxide 6-8, magnetite 3-5, acrylate resin 1.3-1.5, cerium oxide 2-3, titanium oxide 5-7, tridecylene base succinic acid 1-2, silane coupling agent 0.3-0.5, phenylformic acid dibutylester 0.4-0.6, loess 60-65,4-6% hydrochloric acid is appropriate, water appropriate, auxiliary agent 15-20;

Described auxiliary agent is made by the raw material of following weight parts: kaolin 5-7,2-2.5% sodium hydroxide solution 20-25, glyceryl monostearate 0.2-0.3, methacrylic ester 1-2, ethyl propenoate 0.4-0.7, activated calcium carbonate 10-15, ten trifluoro octyl group Trimethoxy silane 0.6-0.8, nano-graphite 1-1.3, tea saponin 0.1-0.2, Fruit of Cherokee Rose essential oil 0.1-0.2, Potassium Persulphate 0.1-0.2, water are appropriate; Preparation method is: kaolin mixes with 2-2.5% sodium hydroxide solution, be heated to 70-80 ℃, stirring reaction 20-30 minute, filter, obtain filter residue, being washed to pH is 7-9, ovendry power is broken into the particle of 2-50 μ m, then spray into while stirring ten trifluoro octyl group Trimethoxy silanes, grind 20-25 minute, obtain modified kaolin; Again tea saponin is added in suitable quantity of water, add again activated calcium carbonate, after stirring, add glyceryl monostearate, methacrylic ester, ethyl propenoate, after stirring, be warming up to 70-80 ℃, add Potassium Persulphate, stirring reaction 20-30 minute, then add nano-graphite, continue stirring reaction 30-40 minute, dry, mix with modified kaolin and other remaining components, dispersion grinding becomes the particle of 2-50 μ m, obtains.

2. the preparation method of the film of resistance to reservior capacitor filler special according to claim 1, is characterized in that comprising the following steps:

(1) loess is sent in calcining furnace, at 700-800 ℃, calcined 2-3 hour, take out and pulverize, cross 100 mesh sieves, then add 2-3 4-6% hydrochloric acid doubly, be heated to 50-70 ℃, stir 10-20 minute, filter, obtain filter residue, pickling once, then is washed to neutrality more as stated above, filters, and obtains particle;

(2) magnetite is pulverized, crossed 100 mesh sieves, mix with CPE resin, phosphorus benzene tricarboxylic acid three monooctyl esters, urea-formaldehyde resin, acrylate resin, tridecylene base succinic acid, silane coupling agent, phenylformic acid dibutylester, grind 20-30 minute, obtain mixture;

(3) material (1) step and (2) step being obtained mixes with cerium oxide, titanium oxide, aluminium hydroxide, adds suitable quantity of water to stir into mud shape, grinds to form the slurry of 2-50 μ m, and spraying is dry, then mixes with other remaining components, obtains.