CN106220153B - A kind of preparation method of electrical contact material - Google Patents
A kind of preparation method of electrical contact material Download PDFInfo
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- CN106220153B CN106220153B CN201610501783.0A CN201610501783A CN106220153B CN 106220153 B CN106220153 B CN 106220153B CN 201610501783 A CN201610501783 A CN 201610501783A CN 106220153 B CN106220153 B CN 106220153B
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- 239000000463 material Substances 0.000 title claims abstract description 47
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 56
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 28
- 239000011248 coating agent Substances 0.000 claims abstract description 22
- 238000000576 coating method Methods 0.000 claims abstract description 22
- HUMNYLRZRPPJDN-UHFFFAOYSA-N benzaldehyde Chemical compound O=CC1=CC=CC=C1 HUMNYLRZRPPJDN-UHFFFAOYSA-N 0.000 claims abstract description 18
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims abstract description 18
- 235000015110 jellies Nutrition 0.000 claims abstract description 16
- 239000008274 jelly Substances 0.000 claims abstract description 16
- 239000006004 Quartz sand Substances 0.000 claims abstract description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 9
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 9
- QNGNSVIICDLXHT-UHFFFAOYSA-N para-ethylbenzaldehyde Natural products CCC1=CC=C(C=O)C=C1 QNGNSVIICDLXHT-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910001961 silver nitrate Inorganic materials 0.000 claims abstract description 9
- 239000010457 zeolite Substances 0.000 claims abstract description 9
- 239000000839 emulsion Substances 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 230000010355 oscillation Effects 0.000 claims abstract description 8
- 229920001909 styrene-acrylic polymer Polymers 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims description 13
- 239000011812 mixed powder Substances 0.000 claims description 11
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 7
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 7
- 239000004593 Epoxy Substances 0.000 claims description 6
- 229920003180 amino resin Polymers 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 6
- 150000004678 hydrides Chemical class 0.000 claims description 6
- 238000007654 immersion Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 229920001296 polysiloxane Polymers 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000003643 water by type Substances 0.000 claims description 6
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims description 3
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 3
- 238000001291 vacuum drying Methods 0.000 claims description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 abstract description 9
- 239000002184 metal Substances 0.000 abstract description 9
- 229920002857 polybutadiene Polymers 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 6
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 6
- 230000003628 erosive effect Effects 0.000 description 4
- 230000004927 fusion Effects 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- NHPBNQZEXDUUIO-UHFFFAOYSA-N [Ag+].[Ag+].[O-][N+]([O-])=O.[O-][N+]([O-])=O Chemical compound [Ag+].[Ag+].[O-][N+]([O-])=O.[O-][N+]([O-])=O NHPBNQZEXDUUIO-UHFFFAOYSA-N 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- SBYXRAKIOMOBFF-UHFFFAOYSA-N copper tungsten Chemical compound [Cu].[W] SBYXRAKIOMOBFF-UHFFFAOYSA-N 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000010946 fine silver Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/14—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silica
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
- C04B41/49—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes
- C04B41/4905—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes containing silicon
- C04B41/4922—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes containing silicon applied to the substrate as monomers, i.e. as organosilanes RnSiX4-n, e.g. alkyltrialkoxysilane, dialkyldialkoxysilane
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- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/82—Coating or impregnation with organic materials
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D125/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
- C09D125/02—Homopolymers or copolymers of hydrocarbons
- C09D125/04—Homopolymers or copolymers of styrene
- C09D125/08—Copolymers of styrene
- C09D125/14—Copolymers of styrene with unsaturated esters
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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Abstract
The invention discloses a kind of preparation methods of electrical contact material, belong to electrical contact material preparation technical field.The present invention takes artificial zeolite, quartz sand and adhesive mixing, jelly is made through shaking table oscillation, ultrasonic disperse, isothermal holding, it takes styrene-acrylic emulsion, butadiene resin etc. that artificial stone-like coating is made again, jelly surface is evenly applied to, after cured, it is put into benzaldehyde and impregnates, it is pressed into green body after drying, is put into silver nitrate solution and impregnates, in high temperature furnace, it is passed through ammonia, keeps the temperature electrical contact material is made at a certain temperature.The beneficial effects of the present invention are: preparation step of the present invention is simple, products obtained therefrom cost is lower than other 25.3% or more products, solves the problems, such as that metal resource wastes；The strength of materials is high, and electrical wear is small, and arc extinguishing ability is good, electrical contact long service life.
Description
Technical field
The present invention relates to a kind of preparation methods of electrical contact material, belong to electrical contact material preparation technical field.
Background technique
Contact material, for switching, relay, electrical connection and electric insert-pull element contact material, also known as electricity touching
Head material.With good resistance to electrical wear, anti-melting welding, electrical and thermal conductivity, contact resistance is small, since Agcdo is with disperse point
Portion can increase the hardness of material, improve mechanical resistant abrasiveness.When passing through short circuit current, resistance fusion welding ability is strong, electrical contact
Manufacturing process influences its performance very big.What is generally used has copper-base contact material and silver based contact material.Copper-base contact material,
Copper tungsten system contact material has many advantages, such as that good resistance to arc erosion, resistance fusion welding, intensity are high.Guillaume metal has good
Resistance fusion welding, lower value of shutting off, certain connecting-disconnecting function.But such material cost is high, wastes metal resource, and because of intensity
It is low, arc erosion is big, therefore the contact service life is shorter, is only applicable to the vacuum circuit breaker and vacuum contactor of low capacity.Silver-based contact
Material, silver-colored tungsten system contact material have good heat, electrical conductivity, and damage tolerant corrosion, resistance fusion welding, major defect is contact resistance
It is unstable.Silver-colored nickel contact material has good conductive, thermal conductivity, and contact resistance is low and stablizes, and arc erosion is small and uniform,
Material transfer ratio fine silver when being opened and closed under direct current is small.The characteristics of silver-colored graphite contact material be conduct electricity very well, contact resistance is low, anti-
Heat sealability is good, will not melting welding under short circuit current.The erosion of such material arc is higher, and electrical wear is big, and arc extinguishing ability is poor,
It is at high cost, waste metal resource.
Summary of the invention
The technical problems to be solved by the invention: low for current electrical contact material intensity, electrical wear is big, arc extinguishing ability
It the drawbacks of difference causes contact life short, and the material uses made of metal standby, at high cost, wastes a large amount of metal resources, provides
One kind taking artificial zeolite, quartz sand and adhesive mixing, and jelly is made, then takes through shaking table oscillation, ultrasonic disperse, isothermal holding
Artificial stone-like coating is made in styrene-acrylic emulsion, butadiene resin etc., is evenly applied to jelly surface, after cured, is put into benzene first
It is impregnated in aldehyde, is pressed into green body after dry, is put into silver nitrate solution and impregnates, in high temperature furnace, ammonia is passed through, in certain temperature
It is lower to keep the temperature the method that electrical contact material is made.Preparation step of the present invention is simple, and products obtained therefrom is at low cost, and intensity is high, and electrical wear is small,
Electrical contact long service life.
In order to solve the above technical problems, the present invention is using technical solution as described below:
(1) 2~3kg artificial zeolite and 2~3kg quartz sand are weighed, is put into pulverizer and carries out 50~60min of crushing, and
It is placed in grinding mill the 1~2h that mills, crosses 80~100 meshes, obtains mixed-powder, hundred parts by weight, than meter, take 40~50 parts to be made
Mixed-powder, 1~3 part of polyvinyl alcohol and 49~57 parts of water, be mixed 30~40min；
(2) after mixing to be mixed, mixture is placed in 1~2h of oscillation treatment in shaking table, is placed in 300~500W ultrasound point
It dissipates and carries out ultrasonic disperse 1~2h of processing in device, after ultrasonic disperse processing, mixture is put in the heat preservation that temperature is 35~45 DEG C
In case, 2~3h is kept the temperature, jelly is obtained, it is spare；
(3) according to parts by weight, 48~51 parts of styrene-acrylic emulsions, 2~3 parts of sodium carboxymethylcelluloses, 3~4 parts of fourths two are weighed
Olefine resin, 4~5 parts of amino resins, 3~5 parts of epoxy radicals silicone hydrides and 32~40 parts of deionized waters are 70~80 DEG C in temperature, turn
Speed is under 300~500r/min, and stirring mixes them thoroughly uniformly, obtains artificial stone-like coating；
(4) artificial stone-like coating obtained above is evenly applied to the spare jelly surface of step (2), coating thickness
For 0.5~0.7mm, after having coated, it is to solidify 1~2h, after cured, by solid-liquid at 50~60 DEG C that applicator, which is put in temperature,
Than 10:1, solidfied material is put into after impregnating 20~30min in benzaldehyde, is placed in 30~40min of vacuum drying at 50~60 DEG C；
(5) after the completion of to be dried, dried object is put into mold and is pressed into green body, then green body object is put into concentration and is
1~2h is impregnated in 2.0mol/L silver nitrate solution, then the green body object after immersion is put into high temperature furnace, while into high temperature furnace
It is passed through ammonia and excludes air, it is that 20~22mL/s continues to be passed through ammonia after excluding air that control ammonia, which is passed through rate, is controlled
Temperature is 980~1050 DEG C in high temperature furnace, under the conditions of protection of ammonia, keeps the temperature 2~3h, obtains a kind of electrical contact material.
The principle of the present invention: the present invention is using polyvinyl alcohol as skeleton, by addition artificial zeolite, quartz sand to its toughening,
It is impregnated in benzaldehyde, silver nitrate solution after the coating of artificial stone-like coating, then by being passed through ammonia, makes benzaldehyde, silver nitrate
Silver mirror reaction occurs for solution and ammonia, generates metallic silver and is evenly affixed to applicator surface, to play conductive effect.
Electrical contact material conductivity produced by the present invention is 49~52%IACS, and Brinell hardness is 98~108HB, resistivity
For 3.6~4.9 μ Ω cm, tensile strength is 285~315MPa, and average voltage breakdown intensity is 1.56 × 108~2.32 ×
108V·m-1。
The present invention is compared with other methods, and advantageous effects are:
(1) preparation step of the present invention is simple, and products obtained therefrom cost is lower than other 25.3% or more products, efficiently solves gold
The problem of belonging to the wasting of resources；
(2) strength of materials is high, and electrical wear is small, and arc extinguishing ability is good, electrical contact long service life.
Specific embodiment
2~3kg artificial zeolite and 2~3kg quartz sand are weighed first, are put into pulverizer and are carried out 50~60min of crushing, and
It is placed in grinding mill the 1~2h that mills, crosses 80~100 meshes, obtains mixed-powder, hundred parts by weight, than meter, take 40~50 parts to be made
Mixed-powder, 1~3 part of polyvinyl alcohol and 49~57 parts of water, be mixed 30~40min；Then it after mixing to be mixed, will mix
It closes object and is placed in 1~2h of oscillation treatment in shaking table, be placed in 300~500W ultrasonic dispersers and carry out ultrasonic disperse 1~2h of processing,
After ultrasonic disperse processing, mixture is put in the incubator that temperature is 35~45 DEG C, keeps the temperature 2~3h, obtain jelly, it is standby
With；Again according to parts by weight, weigh 48~51 parts of styrene-acrylic emulsions, 2~3 parts of sodium carboxymethylcelluloses, 3~4 parts of butadiene resins,
4~5 parts of amino resins, 3~5 parts of epoxy radicals silicone hydrides and 32~40 parts of deionized waters are 70~80 DEG C in temperature, revolving speed 300
Under~500r/min, stirring is mixed them thoroughly uniformly, obtains artificial stone-like coating；Artificial stone-like coating obtained above is uniform
Coated on spare jelly surface, coating thickness is 0.5~0.7mm, and after having coated, it is 50~60 that applicator, which is put in temperature,
At DEG C, solidify 1~2h, after cured, by solid-to-liquid ratio 10:1, solidfied material is put into after impregnating 20~30min in benzaldehyde, is placed in
30~40min is dried in vacuo at 50~60 DEG C；After the completion of finally to be dried, dried object is put into mold and is pressed into green body, then
It is that 1~2h is impregnated in 2.0mol/L silver nitrate solution that green body object, which is put into concentration, and the green body object after immersion is then put into high temperature
In furnace, while ammonia being passed through into high temperature furnace and excludes air, it is 20~22mL/s, air to be excluded that control ammonia, which is passed through rate,
Afterwards, continue to be passed through ammonia, controlling temperature in high temperature furnace is 980~1050 DEG C, under the conditions of protection of ammonia, keeps the temperature 2~3h, that is, makes
Obtain a kind of electrical contact material.
Example 1
2kg artificial zeolite and 2kg quartz sand are weighed first, are put into pulverizer and are carried out crushing 50min, are placed in grinding mill
In mill 1h, cross 80 meshes, obtain mixed-powder, hundred parts by weight than meter, take 40 parts made from mixed-powder, 3 parts of polyvinyl alcohol
With 57 parts of water, 30min is mixed；Then after mixing to be mixed, mixture is placed in oscillation treatment 1h in shaking table, is placed in
Ultrasonic disperse is carried out in 300W ultrasonic dispersers and handles 1h, and after ultrasonic disperse processing, it is 35 DEG C that mixture, which is put in temperature,
In incubator, 2h is kept the temperature, jelly is obtained, it is spare；Again according to parts by weight, 48 parts of styrene-acrylic emulsions, 2 parts of carboxymethyl celluloses are weighed
Sodium, 3 parts of butadiene resins, 4 parts of amino resins, 3 parts of epoxy radicals silicone hydrides and 40 parts of deionized waters are 70 DEG C in temperature, and revolving speed is
Under 300r/min, stirring is mixed them thoroughly uniformly, obtains artificial stone-like coating；Artificial stone-like coating obtained above is uniformly applied
It is overlying on spare jelly surface, coating thickness 0.5mm, after having coated, it is solidification at 50 DEG C that applicator, which is put in temperature,
1h by solid-to-liquid ratio 10:1, solidfied material is put into after impregnating 20min in benzaldehyde after cured, is placed at 50 DEG C and is dried in vacuo
30min；After the completion of finally to be dried, dried object is put into mold and is pressed into green body, then green body object is put into concentration and is
1h is impregnated in 2.0mol/L silver nitrate solution, then the green body object after immersion is put into high temperature furnace, while being led into high temperature furnace
Enter ammonia and exclude air, it is 20mL/s that control ammonia, which is passed through rate, after excluding air, continues to be passed through ammonia, controls high temperature furnace
Middle temperature is 980 DEG C, under the conditions of protection of ammonia, keeps the temperature 2h, obtains a kind of electrical contact material.
Preparation step of the present invention is simple, and products obtained therefrom cost is lower than other products 25.39%, efficiently solves metal resource
The problem of waste；The strength of materials is high, and electrical wear is small, and arc extinguishing ability is good, electrical contact long service life；Electrical contact material obtained
Conductivity is 49%IACS, and Brinell hardness 98HB, resistivity is 3.6 μ Ω cm, tensile strength 285MPa, average breakdown potential
Compressive Strength is 1.56 × 108V·m-1。
Example 2
3kg artificial zeolite and 3kg quartz sand are weighed first, are put into pulverizer and are carried out crushing 55min, are placed in grinding mill
In mill 2h, cross 90 meshes, obtain mixed-powder, hundred parts by weight than meter, take 45 parts made from mixed-powder, 2 parts of polyvinyl alcohol
With 53 parts of water, 35min is mixed；Then after mixing to be mixed, mixture is placed in oscillation treatment 2h in shaking table, is placed in
Ultrasonic disperse is carried out in 400W ultrasonic dispersers and handles 2h, and after ultrasonic disperse processing, it is 40 DEG C that mixture, which is put in temperature,
In incubator, 3h is kept the temperature, jelly is obtained, it is spare；Again according to parts by weight, 50 parts of styrene-acrylic emulsions, 2 parts of carboxymethyl celluloses are weighed
Sodium, 4 parts of butadiene resins, 5 parts of amino resins, 4 parts of epoxy radicals silicone hydrides and 35 parts of deionized waters are 75 DEG C in temperature, and revolving speed is
Under 400r/min, stirring is mixed them thoroughly uniformly, obtains artificial stone-like coating；Artificial stone-like coating obtained above is uniformly applied
It is overlying on spare jelly surface, coating thickness 0.6mm, after having coated, it is solidification at 55 DEG C that applicator, which is put in temperature,
2h by solid-to-liquid ratio 10:1, solidfied material is put into after impregnating 25min in benzaldehyde after cured, is placed at 55 DEG C and is dried in vacuo
35min；After the completion of finally to be dried, dried object is put into mold and is pressed into green body, then green body object is put into concentration and is
2h is impregnated in 2.0mol/L silver nitrate solution, then the green body object after immersion is put into high temperature furnace, while being led into high temperature furnace
Enter ammonia and exclude air, it is 21mL/s that control ammonia, which is passed through rate, after excluding air, continues to be passed through ammonia, controls high temperature furnace
Middle temperature is 1035 DEG C, under the conditions of protection of ammonia, keeps the temperature 3h, obtains a kind of electrical contact material.
Preparation step of the present invention is simple, and products obtained therefrom cost is lower than other products 25.62%, efficiently solves metal resource
The problem of waste；The strength of materials is high, and electrical wear is small, and arc extinguishing ability is good, electrical contact long service life；Electrical contact material obtained
Conductivity is 50%IACS, and Brinell hardness 103HB, resistivity is 4.2 μ Ω cm, tensile strength 300MPa, average to puncture
Voltage strength is 1.88 × 108V·m-1。
Example 3
3kg artificial zeolite and 3kg quartz sand are weighed first, are put into pulverizer and are carried out crushing 60min, are placed in grinding mill
In mill 2h, cross 90 meshes, obtain mixed-powder, hundred parts by weight than meter, take 50 parts made from mixed-powder, 1 part of polyvinyl alcohol
With 49 parts of water, 40min is mixed；Then after mixing to be mixed, mixture is placed in oscillation treatment 2h in shaking table, is placed in
Ultrasonic disperse is carried out in 500W ultrasonic dispersers and handles 2h, and after ultrasonic disperse processing, it is 45 DEG C that mixture, which is put in temperature,
In incubator, 3h is kept the temperature, jelly is obtained, it is spare；Again according to parts by weight, 51 parts of styrene-acrylic emulsions, 3 parts of carboxymethyl celluloses are weighed
Sodium, 4 parts of butadiene resins, 5 parts of amino resins, 5 parts of epoxy radicals silicone hydrides and 32 parts of deionized waters are 80 DEG C in temperature, and revolving speed is
Under 500r/min, stirring is mixed them thoroughly uniformly, obtains artificial stone-like coating；Artificial stone-like coating obtained above is uniformly applied
It is overlying on spare jelly surface, coating thickness 0.7mm, after having coated, it is solidification at 60 DEG C that applicator, which is put in temperature,
2h by solid-to-liquid ratio 10:1, solidfied material is put into after impregnating 30min in benzaldehyde after cured, is placed at 60 DEG C and is dried in vacuo
40min；After the completion of finally to be dried, dried object is put into mold and is pressed into green body, then green body object is put into concentration and is
2h is impregnated in 2.0mol/L silver nitrate solution, then the green body object after immersion is put into high temperature furnace, while being led into high temperature furnace
Enter ammonia and exclude air, it is 22mL/s that control ammonia, which is passed through rate, after excluding air, continues to be passed through ammonia, controls high temperature furnace
Middle temperature is 1050 DEG C, under the conditions of protection of ammonia, keeps the temperature 3h, obtains a kind of electrical contact material.
Preparation step of the present invention is simple, and products obtained therefrom cost is lower than other products 26.1%, efficiently solves metal resource wave
The problem of taking；The strength of materials is high, and electrical wear is small, and arc extinguishing ability is good, electrical contact long service life；Electrical contact material electricity obtained
Conductance is 52%IACS, and Brinell hardness 108HB, resistivity is 4.9 μ Ω cm, tensile strength 315MPa, average breakdown potential
Compressive Strength is 2.32 × 108V·m-1。
Claims (1)
1. a kind of preparation method of electrical contact material, it is characterised in that specific preparation step are as follows:
(1) 2~3kg artificial zeolite and 2~3kg quartz sand are weighed, is put into pulverizer and carries out 50~60min of crushing, be placed in
Mill 1~2h in grinding mill, crosses 80~100 meshes, obtains mixed-powder, hundred parts by weight than meter, take 40~50 parts made from mix
Powder, 1~3 part of polyvinyl alcohol and 49~57 parts of water are closed, 30~40min is mixed；
(2) after mixing to be mixed, mixture is placed in 1~2h of oscillation treatment in shaking table, is placed in 300~500W ultrasonic dispersers
Middle progress ultrasonic disperse handles 1~2h, and after ultrasonic disperse processing, mixture is put in the incubator that temperature is 35~45 DEG C
In, 2~3h is kept the temperature, jelly is obtained, it is spare；
(3) according to parts by weight, 48~51 parts of styrene-acrylic emulsions, 2~3 parts of sodium carboxymethylcelluloses, 3~4 parts of butadiene trees are weighed
Rouge, 4~5 parts of amino resins, 3~5 parts of epoxy radicals silicone hydrides and 32~40 parts of deionized waters are 70~80 DEG C in temperature, and revolving speed is
Under 300~500r/min, stirring is mixed them thoroughly uniformly, obtains artificial stone-like coating；
(4) artificial stone-like coating obtained above is evenly applied to the spare jelly surface of step (2), coating thickness is
0.5~0.7mm, after having coated, it is to solidify 1~2h, after cured, by solid-to-liquid ratio at 50~60 DEG C that applicator, which is put in temperature,
Solidfied material is put into after impregnating 20~30min in benzaldehyde by 10:1, is placed in 30~40min of vacuum drying at 50~60 DEG C；
(5) after the completion of to be dried, dried object is put into mold and is pressed into green body, then it is 2.0mol/L that green body object, which is put into concentration,
1~2h is impregnated in silver nitrate solution, then the green body object after immersion is put into high temperature furnace, while ammonia is passed through into high temperature furnace
Air is excluded, it is 20~22mL/s that control ammonia, which is passed through rate, after excluding air, continues to be passed through ammonia, control in high temperature furnace
Temperature is 980~1050 DEG C, under the conditions of protection of ammonia, keeps the temperature 2~3h, obtains a kind of electrical contact material.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4240830A (en) * | 1978-11-30 | 1980-12-23 | Westinghouse Electric Corp. | Method for making sintered metal-coated graphite for high-current collector brushes |
| CN101510479A (en) * | 2009-03-18 | 2009-08-19 | 中国船舶重工集团公司第七二五研究所 | Method for preparing siller tin oxide electric contact material |
| CN103996426A (en) * | 2014-05-28 | 2014-08-20 | 东北大学 | Silver-nickel composite electrical contact material with nickel distributed in net-shaped mode, and preparation method thereof |
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2016
- 2016-06-30 CN CN201610501783.0A patent/CN106220153B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4240830A (en) * | 1978-11-30 | 1980-12-23 | Westinghouse Electric Corp. | Method for making sintered metal-coated graphite for high-current collector brushes |
| CN101510479A (en) * | 2009-03-18 | 2009-08-19 | 中国船舶重工集团公司第七二五研究所 | Method for preparing siller tin oxide electric contact material |
| CN103996426A (en) * | 2014-05-28 | 2014-08-20 | 东北大学 | Silver-nickel composite electrical contact material with nickel distributed in net-shaped mode, and preparation method thereof |
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