CN107778549A - A kind of thin film capacitor shell preparation method of perfect heat-dissipating - Google Patents
A kind of thin film capacitor shell preparation method of perfect heat-dissipating Download PDFInfo
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- CN107778549A CN107778549A CN201711014461.4A CN201711014461A CN107778549A CN 107778549 A CN107778549 A CN 107778549A CN 201711014461 A CN201711014461 A CN 201711014461A CN 107778549 A CN107778549 A CN 107778549A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2272—Ferric oxide (Fe2O3)
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/04—Polymer mixtures characterised by other features containing interpenetrating networks
Abstract
The invention discloses a kind of thin film capacitor shell preparation method of perfect heat-dissipating, comprise the following steps：Natural rubber is plasticated, cooled down, adds nitrile silicone rubber, ethylene propylene diene rubber, nanomete talc powder, zeolite powder, flyash, glass fibre, diatomite banburying obtain first material；Coconut husk powdered carbon, ferric nitrate, urea, absolute ethyl alcohol are well mixed, then hydro-thermal process, filtered, washing, be dried to obtain prefabricated material；Maleic anhydride, dibenzoyl peroxide, disproportionated rosin are stirred, POE, prefabricated material, magnesium stearate is added and continues to stir, is sent into double screw extruder and extrudes, is cooled down, crushing obtains second material；Second material, maleic anhydride, vulcanization accelerator TMTM, magnesia, age resistor ODA, Bao Tong are added into first material, is heated up, is kneaded, compression molding obtains the thin film capacitor shell of perfect heat-dissipating.
Description
Technical field
The present invention relates to the thin film capacitor shell preparation method of technical field, more particularly to a kind of perfect heat-dissipating.
Background technology
Thin film capacitor of the prior art is due to the deficiency of heat dispersion, and performance is unstable, short life.Its reason is
Thin film capacitor has certain heating power, and the film thermal conductivity of thin film capacitor is all poor, causes thin film capacitor
Generate heat more serious, thin film capacitor works in high temperature range for a long time, and performance can not just be guaranteed, and add thermal breakdown
Inefficacy ratio.In the prior art, in order to improve the job stability of thin film capacitor, and the use of thin film capacitor is extended
In the life-span, increase thin film capacitor volume is mainly taken to decline the thermal resistance of thin film capacitor to increase the method for equivalent area.But
It is that the above method result in the rising of thin film capacitor manufacturing cost, and hardly possible is fixed in the installation for adding thin film capacitor
Degree, have impact on the miniaturization of the equipment with thin film capacitor.
The content of the invention
Based on technical problem existing for background technology, the present invention proposes a kind of thin film capacitor shell of perfect heat-dissipating
Preparation method, preparation method is simple, reasonable raw material proportioning, the mechanical property of gained thin film capacitor shell, fatigue behaviour, resistance to old
The performances such as change, radiating are strong, can improve the service life of thin film capacitor, can prevent thin film capacitor from thermal breakdown phenomenon occurs.
A kind of thin film capacitor shell preparation method of perfect heat-dissipating proposed by the present invention, comprises the following steps：
S1, natural rubber plasticated, cooled down, add nitrile silicone rubber, ethylene propylene diene rubber, nanomete talc powder, zeolite powder,
Flyash, glass fibre, diatomite banburying obtain first material；
S2, coconut husk powdered carbon, ferric nitrate, urea, absolute ethyl alcohol be well mixed, then hydro-thermal process, filtered, washed, done
It is dry to obtain prefabricated material；
S3, maleic anhydride, dibenzoyl peroxide, disproportionated rosin stirred, add ethylene-octene copolymer,
Prefabricated material, magnesium stearate continue to stir, and are sent into double screw extruder and extrude, and cool down, and crushing obtains second material；
S4, second material, maleic anhydride, vulcanization accelerator TMTM, magnesia, age resistor ODA are added into first material,
Bao Tong, heat up, be kneaded, compression molding obtains the thin film capacitor shell of perfect heat-dissipating.
Preferably, in S1, natural rubber, nitrile silicone rubber, the weight ratio of ethylene propylene diene rubber are 70-90：30-40：30-
50。
Preferably, in S1, natural rubber, nanomete talc powder, zeolite powder, flyash, glass fibre, diatomaceous weight ratio
For 70-90：50-60：4-12：15-25：8-16：10-18.
Preferably, in S1, natural rubber is plasticated 10-20min, plasticating temperature is 130-140 DEG C, cooling, adds nitrile
Silicon rubber, ethylene propylene diene rubber, nanomete talc powder, zeolite powder, flyash, glass fibre, diatomite banburying 10-20min, banburying
Temperature is 120-130 DEG C, obtains first material.
Preferably, in S2, coconut husk powdered carbon, ferric nitrate, urea, the weight ratio of absolute ethyl alcohol are 60-80：4-10：4-8：
100-140。
Preferably, in S2, coconut husk powdered carbon, ferric nitrate, urea, absolute ethyl alcohol are well mixed, then hydro-thermal process 16-
24h, hydrothermal temperature are 220-280 DEG C, filtering, are washed with absolute ethyl alcohol, are dried to obtain prefabricated material.
Preferably, in S3, maleic anhydride, dibenzoyl peroxide, disproportionated rosin, ethylene-octene copolymer, prefabricated material,
The 2-4 of magnesium stearate：4-8：120-160：30-50：40-80：2-4.
Preferably, in S3, maleic anhydride, dibenzoyl peroxide, disproportionated rosin are stirred, whipping temp 75-
85 DEG C, mixing speed 500-650r/min, add ethylene-octene copolymer, prefabricated material, magnesium stearate and continue to stir 10-
20min, it is sent into double screw extruder and extrudes, extrusion temperature is 220-240 DEG C, and cooling, crushing obtains second material.
Preferably, in S4, first material, second material, maleic anhydride, vulcanization accelerator TMTM, magnesia, age resistor
ODA weight ratio is 210-225：4-8：2-4：2-4：1-3：2-4.
Preferably, in S4, into first material add second material, maleic anhydride, vulcanization accelerator TMTM, magnesia,
Age resistor ODA, it is thin logical 4-8 times, 130-140 DEG C is warming up to, is kneaded 8-16min, compression molding obtains the film of perfect heat-dissipating
Capacitor case.
Preparation method of the present invention is simple, reasonable raw material proportioning, the mechanical property of gained thin film capacitor shell, fatigability
The performance such as energy, ageing-resistant, radiating is strong, can improve the service life of thin film capacitor, can prevent thin film capacitor from thermal shock occurs
Wear phenomenon.
The present invention adds second material using natural rubber, nitrile silicone rubber, ethylene propylene diene rubber as base material, cooperation, can
Mutual compatibility is effectively improved, and forms interpenetrating structure, a large amount of passages of heat, heat dispersion are internally formed after crosslinked solidification
It is good, and excellent in mechanical performance；Coconut husk powdered carbon can load coconut husk with ferric nitrate, urea compounding hydro-thermal process, the iron oxide of generation
The fiber surface of powdered carbon, not only thermostabilization is fabulous, and has substantial amounts of heat transfer path；Prefabricated material and ethylene-octene copolymer
Compounding, flows good dispersion under the cooperation of magnesium stearate, and is grafted in the presence of maleic anhydride monomer, forms stable increasing
Tough structure；Second material can effectively promote nanomete talc powder, zeolite powder, flyash, glass fibre, diatomite abundant in system
Scattered, storeroom can form stable combination, and not only fillibility is good, and make the mechanical property of thin film capacitor obtained by the present invention
And thermostabilization can further enhance, ageing-resistant performance is excellent, and heat-resistant stability is good, while cheap, and raw material sources are wide.
Embodiment
Below, technical scheme is described in detail by specific embodiment.
Embodiment 1
A kind of thin film capacitor shell preparation method of perfect heat-dissipating, comprises the following steps：
S1, plasticate 70kg natural rubbers 20min, plasticating temperature be 130 DEG C, cooling, add 40kg nitrile silicone rubbers,
30kg ethylene propylene diene rubbers, 60kg nanomete talc powders, 4kg zeolite powders, 25kg flyash, 8kg glass fibres, 18kg diatomite are close
10min is refined, mixing temperature is 130 DEG C, obtains first material；
S2,60kg coconut husks powdered carbon, 10kg ferric nitrates, 4kg urea, 140kg absolute ethyl alcohols be well mixed, then at hydro-thermal
16h is managed, hydrothermal temperature is 280 DEG C, filtering, is washed with absolute ethyl alcohol, is dried to obtain prefabricated material；
S3,2kg maleic anhydrides, 8kg dibenzoyl peroxides, 120kg disproportionated rosins stirred, whipping temp 85
DEG C, mixing speed 500r/min, add the prefabricated material of 50kg ethylene-octene copolymers, 40kg, 4kg magnesium stearates continue to stir
10min is mixed, is sent into double screw extruder and extrudes, extrusion temperature is 240 DEG C, and cooling, crushing obtains second material；
S4,8kg second materials, 2kg maleic anhydrides, 4kg vulcanization accelerators TMTM, 1kg are added into 210kg first materials
Magnesia, 4kg age resistor ODA, it is thin logical 4 times, 140 DEG C are warming up to, is kneaded 8min, compression molding obtains the film of perfect heat-dissipating
Capacitor case.
Embodiment 2
A kind of thin film capacitor shell preparation method of perfect heat-dissipating, comprises the following steps：
S1, plasticate 90kg natural rubbers 10min, plasticating temperature be 140 DEG C, cooling, add 30kg nitrile silicone rubbers,
50kg ethylene propylene diene rubbers, 50kg nanomete talc powders, 12kg zeolite powders, 15kg flyash, 16kg glass fibres, 10kg diatomite
Banburying 20min, mixing temperature are 120 DEG C, obtain first material；
S2,80kg coconut husks powdered carbon, 4kg ferric nitrates, 8kg urea, 100kg absolute ethyl alcohols be well mixed, then at hydro-thermal
24h is managed, hydrothermal temperature is 220 DEG C, filtering, is washed with absolute ethyl alcohol, is dried to obtain prefabricated material；
S3,4kg maleic anhydrides, 4kg dibenzoyl peroxides, 160kg disproportionated rosins stirred, whipping temp 75
DEG C, mixing speed 650r/min, add the prefabricated material of 30kg ethylene-octene copolymers, 80kg, 2kg magnesium stearates continue to stir
20min is mixed, is sent into double screw extruder and extrudes, extrusion temperature is 220 DEG C, and cooling, crushing obtains second material；
S4,4kg second materials, 4kg maleic anhydrides, 2kg vulcanization accelerators TMTM, 3kg are added into 225kg first materials
Magnesia, 2kg age resistor ODA, it is thin logical 8 times, 130 DEG C are warming up to, is kneaded 16min, compression molding obtains the thin of perfect heat-dissipating
Membrane capacitance shell.
Embodiment 3
A kind of thin film capacitor shell preparation method of perfect heat-dissipating, comprises the following steps：
S1, plasticate 75kg natural rubbers 18min, plasticating temperature be 132 DEG C, cooling, add 38kg nitrile silicone rubbers,
35kg ethylene propylene diene rubbers, 55kg nanomete talc powders, 6kg zeolite powders, 22kg flyash, 10kg glass fibres, 16kg diatomite
Banburying 12min, mixing temperature are 128 DEG C, obtain first material；
S2,65kg coconut husks powdered carbon, 8kg ferric nitrates, 5kg urea, 130kg absolute ethyl alcohols be well mixed, then at hydro-thermal
18h is managed, hydrothermal temperature is 260 DEG C, filtering, is washed with absolute ethyl alcohol, is dried to obtain prefabricated material；
S3,2.5kg maleic anhydrides, 7kg dibenzoyl peroxides, 130kg disproportionated rosins stirred, whipping temp is
82 DEG C, mixing speed 550r/min, add the prefabricated material of 45kg ethylene-octene copolymers, 50kg, 3.5kg magnesium stearates after
Continuous stirring 12min, is sent into double screw extruder and extrudes, and extrusion temperature is 235 DEG C, and cooling, crushing obtains second material；
S4,7kg second materials, 2.5kg maleic anhydrides, 3.5kg vulcanization accelerators are added into 215kg first materials
TMTM, 1.5kg magnesia, 3.5kg age resistor ODA, it is thin logical 5 times, 138 DEG C are warming up to, is kneaded 10min, compression molding is dissipated
The thin film capacitor shell of good in thermal property.
Embodiment 4
A kind of thin film capacitor shell preparation method of perfect heat-dissipating, comprises the following steps：
S1, plasticate 85kg natural rubbers 12min, plasticating temperature be 138 DEG C, cooling, add 32kg nitrile silicone rubbers,
45kg ethylene propylene diene rubbers, 52kg nanomete talc powders, 10kg zeolite powders, 18kg flyash, 14kg glass fibres, 12kg diatomite
Banburying 18min, mixing temperature are 122 DEG C, obtain first material；
S2,75kg coconut husks powdered carbon, 6kg ferric nitrates, 7kg urea, 110kg absolute ethyl alcohols be well mixed, then at hydro-thermal
22h is managed, hydrothermal temperature is 240 DEG C, filtering, is washed with absolute ethyl alcohol, is dried to obtain prefabricated material；
S3,3.5kg maleic anhydrides, 5kg dibenzoyl peroxides, 150kg disproportionated rosins stirred, whipping temp is
78 DEG C, mixing speed 600r/min, add the prefabricated material of 35kg ethylene-octene copolymers, 70kg, 2.5kg magnesium stearates after
Continuous stirring 18min, is sent into double screw extruder and extrudes, and extrusion temperature is 225 DEG C, and cooling, crushing obtains second material；
S4,5kg second materials, 3.5kg maleic anhydrides, 2.5kg vulcanization accelerators are added into 220kg first materials
TMTM, 2.5kg magnesia, 2.5kg age resistor ODA, it is thin logical 7 times, 132 DEG C are warming up to, is kneaded 14min, compression molding is dissipated
The thin film capacitor shell of good in thermal property.
The gained thin film capacitor of embodiment 4 is subjected to performance detection, its result is as follows：
| Test event | Embodiment 4 | Ordinary capacitor rubbery outer cover |
| Hardness (Shao Er D) | 76 | 62 |
| Density, g/cm3 | 1.25 | 1.41 |
| Tensile strength, MPa | 29 | 16 |
| Camber intensity (2mm/min), MPa | 32 | 28 |
| Notch impact strength (23 DEG C), kJ/m2 | 48.2 | 40.3 |
| Heat distortion temperature, DEG C | 345 | 305 |
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (10)
1. the thin film capacitor shell preparation method of a kind of perfect heat-dissipating, it is characterised in that comprise the following steps：
S1, natural rubber plasticated, cool down, add nitrile silicone rubber, ethylene propylene diene rubber, nanomete talc powder, zeolite powder, fine coal
Ash, glass fibre, diatomite banburying obtain first material；
S2, coconut husk powdered carbon, ferric nitrate, urea, absolute ethyl alcohol be well mixed, then hydro-thermal process, filtered, washing, dry
To prefabricated material；
S3, maleic anhydride, dibenzoyl peroxide, disproportionated rosin stirred, add ethylene-octene copolymer, prefabricated
Material, magnesium stearate continue to stir, and are sent into double screw extruder and extrude, and cool down, and crushing obtains second material；
S4, second material, maleic anhydride, vulcanization accelerator TMTM, magnesia, age resistor ODA are added into first material, it is thin
It is logical, heat up, be kneaded, compression molding obtains the thin film capacitor shell of perfect heat-dissipating.
2. the thin film capacitor shell preparation method of perfect heat-dissipating according to claim 1, it is characterised in that in S1, day
T PNR, nitrile silicone rubber, the weight ratio of ethylene propylene diene rubber are 70-90：30-40：30-50.
3. the thin film capacitor shell preparation method of perfect heat-dissipating according to claim 1 or claim 2, it is characterised in that in S1,
Natural rubber, nanomete talc powder, zeolite powder, flyash, glass fibre, diatomaceous weight ratio are 70-90：50-60：4-12：
15-25：8-16：10-18.
4. according to the thin film capacitor shell preparation method of any one of the claim 1-3 perfect heat-dissipatings, it is characterised in that
In S1, natural rubber is plasticated 10-20min, plasticating temperature is 130-140 DEG C, cooling, adds nitrile silicone rubber, EPDM
Rubber, nanomete talc powder, zeolite powder, flyash, glass fibre, diatomite banburying 10-20min, mixing temperature 120-130
DEG C, obtain first material.
5. according to the thin film capacitor shell preparation method of any one of the claim 1-4 perfect heat-dissipatings, it is characterised in that
In S2, coconut husk powdered carbon, ferric nitrate, urea, the weight ratio of absolute ethyl alcohol are 60-80：4-10：4-8：100-140.
6. according to the thin film capacitor shell preparation method of any one of the claim 1-5 perfect heat-dissipatings, it is characterised in that
In S2, coconut husk powdered carbon, ferric nitrate, urea, absolute ethyl alcohol are well mixed, then hydro-thermal process 16-24h, hydrothermal temperature is
220-280 DEG C, filtering, washed with absolute ethyl alcohol, be dried to obtain prefabricated material.
7. according to the thin film capacitor shell preparation method of any one of the claim 1-6 perfect heat-dissipatings, it is characterised in that
In S3, maleic anhydride, dibenzoyl peroxide, disproportionated rosin, ethylene-octene copolymer, prefabricated material, the 2-4 of magnesium stearate：4-
8：120-160：30-50：40-80：2-4.
8. according to the thin film capacitor shell preparation method of any one of the claim 1-7 perfect heat-dissipatings, it is characterised in that
In S3, maleic anhydride, dibenzoyl peroxide, disproportionated rosin are stirred, whipping temp is 75-85 DEG C, and mixing speed is
500-650r/min, add ethylene-octene copolymer, prefabricated material, magnesium stearate and continue to stir 10-20min, be sent into twin-screw
Extruded in extruder, extrusion temperature is 220-240 DEG C, and cooling, crushing obtains second material.
9. according to the thin film capacitor shell preparation method of any one of the claim 1-8 perfect heat-dissipatings, it is characterised in that
In S4, first material, second material, maleic anhydride, vulcanization accelerator TMTM, magnesia, age resistor ODA weight ratio are 210-
225：4-8：2-4：2-4：1-3：2-4.
10. according to the thin film capacitor shell preparation method of any one of the claim 1-8 perfect heat-dissipatings, its feature exists
In, in S4, second material, maleic anhydride, vulcanization accelerator TMTM, magnesia, age resistor ODA are added into first material, it is thin
It is logical 4-8 times, 130-140 DEG C is warming up to, is kneaded 8-16min, compression molding obtains the thin film capacitor shell of perfect heat-dissipating.
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