CN104086808A - Special filler for ultraviolet-resistant capacitor films and preparation method thereof - Google Patents

Abstract

The invention relates to a special filler for ultraviolet-resistant capacitor films, which is prepared from the following raw materials in parts by weight: 4-6 parts of calcium hydroxide, 3-5 parts of magnesium oxide, 0.4-0.7 part of palm wax, 1-2 parts of aluminum dihydrogen phosphate, 0.1-0.2 part of sodium dodecyl benzene sulfonate, 0.2-0.4 part of stearic acid, 6-8 parts of titanium dioxide, 2-3 parts of silicon dioxide, 0.3-0.4 part of aluminum isopropoxide, 60-65 parts of clay, a right amount of 4-6% hydrochloric acid, a right amount of water and 15-20 parts of assistant. The titanium dioxide and silicon dioxide added to the filler can enhance the ultraviolet resistance of the film, so that the filler has favorable reinforcing action and can greatly enhance the light aging resistance, tearing strength and impact strength of the polypropylene film; by using the clay, the cost is lowered; and the assistant can enhance the dispersity and reinforcing performance of the filler and also enhance the strength and impact resistance of the film.

Description

A kind of UV resistant capacitor film filler special and preparation method thereof

Technical field

The invention belongs to capacitor film field, particularly a kind of UV resistant 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 excellence (frequency response broadness), and also dielectric loss is very little.Based on above advantage, 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 in the time 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, easily 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 film to carry out modification.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 UV resistant capacitor film filler special and preparation method thereof, this filler has improved the UV resistant performance of film, reinforcing property is good simultaneously, can greatly improve light aging resisting property, tear strength, the impact strength of polypropylene film, has reduced cost.

Technical scheme of the present invention is as follows:

A kind of UV resistant capacitor film filler special, is characterized in that being made up of the raw material of following weight part: calcium hydroxide 4-6, magnesium oxide 3-5, palm wax 0.4-0.7, aluminium dihydrogen phosphate 1-2, Sodium dodecylbenzene sulfonate 0.1-0.2, stearic acid 0.2-0.4, titanium dioxide 6-8, silicon-dioxide 2-3, aluminum isopropylate 0.3-0.4, clay 60-65,4-6% hydrochloric acid is appropriate, water appropriate, auxiliary agent 15-20;

Described auxiliary agent is made up of the raw material of following weight parts: wilkinite 2-3,2-2.5% sodium hydroxide solution 10-15, Shawinigan black 2-3, methacrylic ester 1-2, ethyl propenoate 0.4-0.7, Paris white 10-15, Sodium dodecylbenzene sulfonate 0.1-0.2, magnesium borate crystal whisker 1-1.3, nano zinc powder 2-4, ptfe micropowder 0.4-0.6, Oleum Bupleuri 0.5-0.8, Potassium Persulphate 0.1-0.2, water are appropriate; Preparation method is: wilkinite mixes with 2-2.5% sodium hydroxide solution, is heated to 70-80 DEG C, 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 Sodium dodecylbenzene sulfonate is added in suitable quantity of water, add again described bentonite clay particle, Paris white, after stirring, add methacrylic ester, ethyl propenoate, after stirring, be warming up to 70-80 DEG C, add Potassium Persulphate, stirring reaction 20-30 minute, then add Shawinigan black, nano zinc powder, continue stirring reaction 30-40 minute, dry, mix with other remaining components, dispersion grinding becomes the particle of 2-50 μ m, to obtain final product.

The preparation method of described UV resistant capacitor film filler special, is characterized in that comprising the following steps:

(1) clay is sent in calcining furnace, at 700-800 DEG C, 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 DEG C, stir 10-20 minute, filter, obtain filter residue, pickling once, then is washed to neutrality more as stated above, filters, and obtains particle;

(2) silicon-dioxide is pulverized, crossed 80 mesh sieves, mix with palm wax, aluminium dihydrogen phosphate, stearic acid, aluminum isopropylate, grind 20-30 minute, obtain mixture;

(3) material (1) step and (2) step being obtained mixes with calcium hydroxide, Sodium dodecylbenzene sulfonate, magnesium oxide, titanium dioxide, add suitable quantity of water to stir into mud shape, grind to form the slurry of 2-50 μ m, spraying is dry, mix with other remaining components again, to obtain final product.

Beneficial effect of the present invention

Filler of the present invention has added titanium dioxide, silicon-dioxide, has improved the UV resistant performance of film, and reinforcing property is good simultaneously, can greatly improve light aging resisting property, tear strength, the impact strength of polypropylene film; By using clay, reduce cost; The application of the invention auxiliary agent, can improve dispersiveness, the reinforcing property of filler, can improve thin film strength and tough.

Embodiment

A kind of UV resistant capacitor film filler special, by following weight part (kilogram) raw material make: calcium hydroxide 5, magnesium oxide 4, palm wax 0.5, aluminium dihydrogen phosphate 1.5, Sodium dodecylbenzene sulfonate 0.1, stearic acid 0.3, titanium dioxide 7, silicon-dioxide 2.4, aluminum isopropylate 0.4, clay 63,5% hydrochloric acid is appropriate, water appropriate, auxiliary agent 18;

Described auxiliary agent by following weight parts (kilogram) raw material make: wilkinite 2.5,2.3% sodium hydroxide solution 13, Shawinigan black 2.5, methacrylic ester 1.5, ethyl propenoate 0.6, Paris white 13, Sodium dodecylbenzene sulfonate 0.1, magnesium borate crystal whisker 1.2, nano zinc powder 3, ptfe micropowder 0.5, Oleum Bupleuri 0.6, Potassium Persulphate 0.1, water are appropriate; Preparation method is: wilkinite mixes with 2.3% sodium hydroxide solution, is heated to 75 DEG C, 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 Sodium dodecylbenzene sulfonate is added in suitable quantity of water, add again described bentonite clay particle, Paris white, after stirring, add methacrylic ester, ethyl propenoate, after stirring, be warming up to 75 DEG C, add Potassium Persulphate, stirring reaction 25 minutes, then add Shawinigan black, nano zinc powder, continue stirring reaction 35 minutes, dry, mix with other remaining components, dispersion grinding becomes the particle of 2-50 μ m, to obtain final product.

The preparation method of described UV resistant capacitor film filler special, comprises the following steps:

(1) clay is sent in calcining furnace, at 750 DEG C, 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 DEG C, stir 15 minutes, filter, obtain filter residue, pickling once, then is washed to neutrality more as stated above, filters, and obtains particle;

(2) silicon-dioxide is pulverized, crossed 80 mesh sieves, mix with palm wax, aluminium dihydrogen phosphate, stearic acid, aluminum isopropylate, grind 25 minutes, obtain mixture;

(3) material (1) step and (2) step being obtained mixes with calcium hydroxide, Sodium dodecylbenzene sulfonate, magnesium oxide, titanium dioxide, add suitable quantity of water to stir into mud shape, grind to form the slurry of 2-50 μ m, spraying is dry, mix with other remaining components again, to obtain final product.

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 DEG C).

Claims (2)

1. a UV resistant capacitor film filler special, is characterized in that being made up of the raw material of following weight part: calcium hydroxide 4-6, magnesium oxide 3-5, palm wax 0.4-0.7, aluminium dihydrogen phosphate 1-2, Sodium dodecylbenzene sulfonate 0.1-0.2, stearic acid 0.2-0.4, titanium dioxide 6-8, silicon-dioxide 2-3, aluminum isopropylate 0.3-0.4, clay 60-65,4-6% hydrochloric acid is appropriate, water appropriate, auxiliary agent 15-20;

Described auxiliary agent is made up of the raw material of following weight parts: wilkinite 2-3,2-2.5% sodium hydroxide solution 10-15, Shawinigan black 2-3, methacrylic ester 1-2, ethyl propenoate 0.4-0.7, Paris white 10-15, Sodium dodecylbenzene sulfonate 0.1-0.2, magnesium borate crystal whisker 1-1.3, nano zinc powder 2-4, ptfe micropowder 0.4-0.6, Oleum Bupleuri 0.5-0.8, Potassium Persulphate 0.1-0.2, water are appropriate; Preparation method is: wilkinite mixes with 2-2.5% sodium hydroxide solution, is heated to 70-80 DEG C, 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 Sodium dodecylbenzene sulfonate is added in suitable quantity of water, add again described bentonite clay particle, Paris white, after stirring, add methacrylic ester, ethyl propenoate, after stirring, be warming up to 70-80 DEG C, add Potassium Persulphate, stirring reaction 20-30 minute, then add Shawinigan black, nano zinc powder, continue stirring reaction 30-40 minute, dry, mix with other remaining components, dispersion grinding becomes the particle of 2-50 μ m, to obtain final product.

2. the preparation method of UV resistant 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 DEG C, 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 DEG C, stir 10-20 minute, filter, obtain filter residue, pickling once, then is washed to neutrality more as stated above, filters, and obtains particle;

(2) silicon-dioxide is pulverized, crossed 80 mesh sieves, mix with palm wax, aluminium dihydrogen phosphate, stearic acid, aluminum isopropylate, grind 20-30 minute, obtain mixture;

(3) material (1) step and (2) step being obtained mixes with calcium hydroxide, Sodium dodecylbenzene sulfonate, magnesium oxide, titanium dioxide, add suitable quantity of water to stir into mud shape, grind to form the slurry of 2-50 μ m, spraying is dry, mix with other remaining components again, to obtain final product.