CN104086815A - Special filler for antioxidant capacitor film and preparation method of special filler - Google Patents

Abstract

The invention provides special filler for an antioxidant capacitor film. The special filler is prepared from the following raw materials in parts by weight: 10-14 parts of reclaimed ethylene-propylene-diene rubber, 5-8 parts of zinc oxide, 1-1.3 parts of polyethylene glycol, 3-5 parts of graphite powder, 2-3 parts of talcum powder, 0.6-0.8 part of polyvinylidene fluoride, 6-9 parts of vanadium diboride, 0.4-0.6 part of triglycidyl isocyanurate, 0.2-0.3 part of oleic acid, 0.3-0.4 part of citric acid, 50-55 parts of clay, a proper amount of 4-6% hydrochloric acid, a proper amount of water and 15-20 parts of adjuvant. According to the invention, due to the addition of reclaimed ethylene-propylene-diene rubber, the oxidation resistance and impact strength of the film can be improved; due to the addition of zinc oxide, the photoaging resistance of the film is improved; due to the addition of vanadium diboride, the heat resistance of the film is improved; due to the addition of clay, 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 anti-oxidant capacitor film filler special and preparation method thereof

Technical field

The invention belongs to capacitor film field, particularly a kind of anti-oxidant capacitor film 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 anti-oxidant capacitor film filler special and preparation method thereof, this filler can improve oxidation-resistance and the impact strength of film, increase the anti-light aging performance of film, increased the resistance toheat of film, reduced cost.

Technical scheme of the present invention is as follows:

An anti-oxidant capacitor film filler special, is characterized in that being made by the raw material of following weight part: Ethylene Propylene Terpolymer reclaimed rubber 10-14, zinc oxide 5-8, polyoxyethylene glycol 1-1.3, Graphite Powder 99 3-5, talcum powder 2-3, polyvinylidene difluoride (PVDF) 0.6-0.8, vanadium diboride 6-9, isocyanuric acid three-glycidyl ester 0.4-0.6, oleic acid 0.2-0.3, citric acid 0.3-0.4, clay 50-55,4-6% hydrochloric acid is appropriate, water appropriate, auxiliary agent 15-20;

Described auxiliary agent is made by the raw material of following weight parts: montmorillonite 2-3,2-3% sodium hydroxide solution 12-16, polyisobutene 0.5-0.8, aluminium triphosphate 0.7-0.9, bisphenol A epoxy acrylate 1-2, Xylitol 0.4-0.7, pure aluminium silicate 3-5, fatty alcohol-polyoxyethylene ether 0.1-0.2, calcium sulfate crystal whiskers 7-9, black silicon carbide 2-4, Yatall MA 0.4-0.6, Oleum Bupleuri 0.5-0.8, ammonium persulphate 0.1-0.2, water are appropriate; Preparation method is: montmorillonite mixes with 2-3% sodium hydroxide solution, is heated to 70-80 ℃, and stirring reaction 20-30 minute filters, and obtains filter residue, and being washed to pH is 7-8, and ovendry power is broken into the particle of 2-50 μ m; Again fatty alcohol-polyoxyethylene ether, Xylitol are added in suitable quantity of water, add again described montmorillonite particle, pure aluminium silicate, after stirring, add polyisobutene, bisphenol A epoxy acrylate, Yatall MA, Oleum Bupleuri, after stirring, be warming up to 80-90 ℃, add ammonium persulphate, stirring reaction 20-30 minute, then add calcium sulfate crystal whiskers, black silicon carbide, continue stirring reaction 30-40 minute, dry, mix with other remaining components, dispersion grinding becomes the particle of 2-50 μ m, obtains.

The preparation method of described anti-oxidant capacitor film filler special, is characterized in that comprising the following steps:

(1) clay 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) Graphite Powder 99, talcum powder are pulverized, crossed 80 mesh sieves, mix with Ethylene Propylene Terpolymer reclaimed rubber, polyoxyethylene glycol, polyvinylidene difluoride (PVDF), isocyanuric acid three-glycidyl ester, oleic acid, citric acid, grind 20-30 minute, obtain mixture;

(3) material (1) step and (2) step being obtained with zinc oxide, vanadium diboride, mix, add suitable quantity of water to stir into mud shape, grind to form the slurry of 2-50 μ m, spraying is dry, then mixes with other remaining components, obtains.

Beneficial effect of the present invention

Filler of the present invention has added Ethylene Propylene Terpolymer reclaimed rubber, can improve oxidation-resistance and the impact strength of film, by adding zinc oxide, has increased the anti-light aging performance of film; By adding vanadium diboride, increased the resistance toheat of film; By using clay, 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

An anti-oxidant capacitor film filler special, by following weight part (kilogram) raw material make: Ethylene Propylene Terpolymer reclaimed rubber 12, zinc oxide 7, polyoxyethylene glycol 1.1, Graphite Powder 99 4, talcum powder 2.5, polyvinylidene difluoride (PVDF) 0.7, vanadium diboride 7, isocyanuric acid three-glycidyl ester 0.5, oleic acid 0.2, citric acid 0.4, clay 53,4% hydrochloric acid are appropriate, water appropriate, auxiliary agent 18;

Described auxiliary agent by following weight parts (kilogram) raw material make: montmorillonite 2 .5,2.5% sodium hydroxide solution 14, polyisobutene 0.7, aluminium triphosphate 0.8, bisphenol A epoxy acrylate 1.5, Xylitol 0.5, pure aluminium silicate 4, fatty alcohol-polyoxyethylene ether 0.1, calcium sulfate crystal whiskers 8, black silicon carbide 3, Yatall MA 0.5, Oleum Bupleuri 0.7, ammonium persulphate 0.1, water are appropriate; Preparation method is: montmorillonite mixes with 2.5% sodium hydroxide solution, is heated to 75 ℃, and stirring reaction 25 minutes filters, and obtains filter residue, and being washed to pH is 8, and ovendry power is broken into the particle of 2-50 μ m; Again fatty alcohol-polyoxyethylene ether, Xylitol are added in suitable quantity of water, add again described montmorillonite particle, pure aluminium silicate, after stirring, add polyisobutene, bisphenol A epoxy acrylate, Yatall MA, Oleum Bupleuri, after stirring, be warming up to 85 ℃, add ammonium persulphate, stirring reaction 25 minutes, then add calcium sulfate crystal whiskers, black silicon carbide, continue stirring reaction 35 minutes, dry, mix with other remaining components, dispersion grinding becomes the particle of 2-50 μ m, obtains.

The preparation method of described anti-oxidant capacitor film filler special, comprises the following steps:

(1) clay 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) Graphite Powder 99, talcum powder are pulverized, crossed 80 mesh sieves, mix with Ethylene Propylene Terpolymer reclaimed rubber, polyoxyethylene glycol, polyvinylidene difluoride (PVDF), isocyanuric acid three-glycidyl ester, oleic acid, citric acid, grind 25 minutes, obtain mixture;

(3) material (1) step and (2) step being obtained with zinc oxide, vanadium diboride, mix, add suitable quantity of water to stir into mud shape, grind to form the slurry of 2-50 μ m, 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. an anti-oxidant capacitor film filler special, is characterized in that being made by the raw material of following weight part: Ethylene Propylene Terpolymer reclaimed rubber 10-14, zinc oxide 5-8, polyoxyethylene glycol 1-1.3, Graphite Powder 99 3-5, talcum powder 2-3, polyvinylidene difluoride (PVDF) 0.6-0.8, vanadium diboride 6-9, isocyanuric acid three-glycidyl ester 0.4-0.6, oleic acid 0.2-0.3, citric acid 0.3-0.4, clay 50-55,4-6% hydrochloric acid is appropriate, water appropriate, auxiliary agent 15-20;

Described auxiliary agent is made by the raw material of following weight parts: montmorillonite 2-3,2-3% sodium hydroxide solution 12-16, polyisobutene 0.5-0.8, aluminium triphosphate 0.7-0.9, bisphenol A epoxy acrylate 1-2, Xylitol 0.4-0.7, pure aluminium silicate 3-5, fatty alcohol-polyoxyethylene ether 0.1-0.2, calcium sulfate crystal whiskers 7-9, black silicon carbide 2-4, Yatall MA 0.4-0.6, Oleum Bupleuri 0.5-0.8, ammonium persulphate 0.1-0.2, water are appropriate; Preparation method is: montmorillonite mixes with 2-3% sodium hydroxide solution, is heated to 70-80 ℃, and stirring reaction 20-30 minute filters, and obtains filter residue, and being washed to pH is 7-8, and ovendry power is broken into the particle of 2-50 μ m; Again fatty alcohol-polyoxyethylene ether, Xylitol are added in suitable quantity of water, add again described montmorillonite particle, pure aluminium silicate, after stirring, add polyisobutene, bisphenol A epoxy acrylate, Yatall MA, Oleum Bupleuri, after stirring, be warming up to 80-90 ℃, add ammonium persulphate, stirring reaction 20-30 minute, then add calcium sulfate crystal whiskers, black silicon carbide, continue stirring reaction 30-40 minute, dry, mix with other remaining components, dispersion grinding becomes the particle of 2-50 μ m, obtains.

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

(1) clay 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) Graphite Powder 99, talcum powder are pulverized, crossed 80 mesh sieves, mix with Ethylene Propylene Terpolymer reclaimed rubber, polyoxyethylene glycol, polyvinylidene difluoride (PVDF), isocyanuric acid three-glycidyl ester, oleic acid, citric acid, grind 20-30 minute, obtain mixture;

(3) material (1) step and (2) step being obtained with zinc oxide, vanadium diboride, mix, add suitable quantity of water to stir into mud shape, grind to form the slurry of 2-50 μ m, spraying is dry, then mixes with other remaining components, obtains.