CN102169744B - Laminated magnetic conducting plate and manufacturing method thereof - Google Patents
Laminated magnetic conducting plate and manufacturing method thereof Download PDFInfo
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- CN102169744B CN102169744B CN2010106141861A CN201010614186A CN102169744B CN 102169744 B CN102169744 B CN 102169744B CN 2010106141861 A CN2010106141861 A CN 2010106141861A CN 201010614186 A CN201010614186 A CN 201010614186A CN 102169744 B CN102169744 B CN 102169744B
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Abstract
The invention discloses a laminated magnetic conducting plate and a manufacturing method thereof. The laminated magnetic conducting plate is made from the following raw materials parts by weight: 100 parts of composite resin, 3-35 parts of amine curing agent, 0.05-2 parts of curing accelerant, 370-400 parts of soft magnetic material, 60-100 parts of glass fiber cloth and 0.7-1.5 parts of antioxidant, wherein the composite resin is the mixture of bisphenol A type epoxy resin, novolac epoxy resin and multi-functionality epoxy resin. The manufacturing method of the laminated magnetic conducting plate comprises the steps: forming an alkali-free glass fiber cloth or a glass fiber cloth for electricians, the composite resin and a magnetic material into semi-solidified sheets through one-off surface sizing by using a lamination method; and then superposing and pressing the semi-solidified sheets to form the magnetic conducting plate. The laminated magnetic conducting plate of the invention has high magnetic conductivity, excellent mechanical property, good processability, long service life and is suitable for processing the magnetic slot wedges of various types of motors.
Description
Technical field
The present invention relates to a kind of lamination magnetic conductive board and manufacturing approach thereof.
Background technology
Along with expanding economy, energy shortage is more and more serious, the energy-saving and cost-reducing inexorable trend that become.Motor is as prime mover, and all trades and professions are used in a large number, and power consumption is 60% of national generating capacity 4,000,000,000,000 degree (2010), is large electricity consumer worthy of the name, also is the maximum industry of energy-saving potential, and therefore, electrical machine energy-saving is imperative.In the motor performance index, efficient is an important parameter.The efficient that improves motor has the whole bag of tricks, like effective material of optimal design and control, increase motor, use converter technique.The non magnetic slot wedge that uses magnetic slot-seal to replace in the motor stator is to improve one of cost-effective method of electric efficiency.The use of magnetic slot-seal has remarkable effect to improving electric efficiency, and it is about 1% that efficient is improved on the original basis, can practice thrift over ten billion degree electricity, reduces the discharging of over ten billion kilogram carbon dioxide, and effects of energy saving and emission reduction is remarkable.
Using more at present, magnetic slot-seal mainly comprises magnetic slot mud, pulling magnetic slot-seal, mold pressing magnetic slot-seal and laminated magnetic wedge according to its forming method.Wherein magnetic slot mud is made up of reduced iron powder and epoxy resin, has to make simply, and plasticity is good; Can improve to a certain extent characteristics such as electric efficiency [Hu Xinwan, Song Shaomin. the application of magnetic slot mud in improving motor performance, middle and small motor; 2004,31 (1): 62-64], [Yuan Qingshui. the reducing energy consumption of motor magnetic slot mud; Petrochemical technology, 2001,8 (3): 165-167].But in use there is certain defective in magnetic slot mud: need the hot curing or the cold curing of certain hour when 1, magnetic slot mud assembles, can not directly use, assemble consuming time longer; 2, the permeability of slot wedge is by the groove mud amount decision of smearing, and human factor is bigger, and magnetic is unstable, and energy-saving effect is undesirable; 3, bad mechanical strength, elevated temperature strength is lower, is prone in the motor operation course come off, and can't use for a long time, and these have all limited the use of magnetic slot mud.It is on pulling insulation slot wedge, to improve to form that CN100356663C has invented the pulling magnetic slot-seal.Iron wire pulling method can be continuously produced, and production efficiency is higher, and steel wire quantity is stable in the slot wedge, has avoided the segregation of magnetic, and magnetic property is stable; The humidification of steel wire makes the slot wedge mechanical property very high, can reach 400MPa; But a large amount of steel wires in the iron wire pulling magnetic slot-seal make its processing difficulties, if take off wedge, steel wire must be swept the boring motor, causes the destruction of stator end coil; And iron powder pulling magnetic slot-seal uses mylar to be adhesive more, and thermal endurance is not high, can not satisfy the instructions for use [CN101295894, CN1152462C] of present motor, thereby drawing groove wedge is replaced by lamination and mold pressing magnetic slot-seal gradually.MCR mold pressing magnetic slot-seal is to use one type of magnetic slot-seal [US3976902, US4040971] comparatively widely at present, and its magnetic property is higher, but mechanical property is lower, and for different motor, preparation mold pressing magnetic slot-seal needs different dies.Through facts have proved, the product of this technology made exists weak point: 1, manufacture craft time requirement is strict, and its product quality depends on the precision with manufacturing equipment and mould that strictly observes to technological operation; 2, current motor manufactory much uses stator VPI to put in order soaking technology, and the whole soaking technology temperature of its VPI is all more than 165 ℃, and the compression-molded structures slot wedge causes powder structure loose easily; 3, mold pressing magnetic slot-seal disposal molding, and laminated magnetic wedge is processed by the lamination magnetic conductive board, precision guarantee easily, and it can't carry out the mechanical grinding secondary operations if tolerance fit goes wrong during rule; 4, mold pressing magnetic slot-seal production efficiency is low, and cost is high.Therefore, these defectives of mold pressing magnetic slot-seal can not satisfy the specification requirement of motor.Laminated magnetic wedge has potential good combination property, and is higher like magnetic property, mechanical property is excellent, good processability, production efficiency high, low cost and other advantages.US4427910, US5252877, CN1953298A, US5214839 have related to the composition and the forming method of magnetic slot-seal.In US5214839; Magnetic slot-seal is made up of magnetic material, thermosetting resin (mylar), curing agent and glass fabric; Forming method is that the mixture with iron powder, mylar, reactive solvents and curing agent divides two parts blade coating on glass cloth; As support, the glass cloth that before curing, will scribble resin paste is compound relatively by the PE film for glass cloth, forms the sandwich of glass cloth-resin paste-glass cloth; Remove the outer PE film of glass cloth after the precuring, the stack compacting of glass cloth prepreg cutting back.This characteristic feature of an invention is that iron powder can evenly distribute, and helps the raising of magnetic property, but mylar itself is relatively poor with the reactive solvents thermal endurance, and the product heat resistance is not high, and is not strong with the cohesive force of magnetic layer, and properties of product are impacted.
Summary of the invention
The purpose of this invention is to provide that a kind of permeability is high, mechanical property is excellent, the lamination magnetic conductive board and the manufacturing approach thereof of the magnetic slot-seal that is applicable to the various model motors of processing of good processability, long service life.
Lamination magnetic conductive board provided by the present invention, process by the raw material of following weight portion:
Compound resin 100,
Amine curing agent 3～35,
Curing accelerator 0.05～2,
Soft magnetic material 370～400,
Glass fabric 60～100,
Oxidation inhibitor 0.7～1.5;
Said compound resin is the blend of bisphenol A type epoxy resin, novolac epoxy resin, multiple functionality epoxide resin.
Lamination magnetic conductive board of the present invention, wherein: said bisphenol A type epoxy resin 10-50 weight portion, novolac epoxy resin 30-70 weight portion, multiple functionality epoxide resin 10-40 weight portion.
Lamination magnetic conductive board of the present invention, wherein: said oxidation inhibitor is the mixture that Hinered phenols and thio-2 acid dibasic acid esters or phosphorous acid esters oxidation inhibitor mix with mass ratio 3/2～7/3.
Lamination magnetic conductive board of the present invention, wherein: the coupling agent that also comprises 0.3～1.5 weight portion; Said coupling agent is the silane coupler of amino or epoxy radicals end-blocking.
Lamination magnetic conductive board of the present invention, wherein: the particle diameter of the said soft magnetic material compound particles that to be secondary reduction iron powder or secondary reduction iron powder mix with mass ratio 3/2-3/1 with the iron-nickel alloy powder is 100～1000 orders; Said glass fabric is that alkali-free glass fiber cloth or electrical glass cloth are the plain weave glass fabric, and surface density is every square meter 60 to 250 grams.
The manufacturing approach of lamination magnetic conductive board provided by the present invention comprises the steps:
100 weight portion compound resins, 3～35 weight portion amine curing agent, 0.05～2 weight portion curing accelerator, 0.7～1.5 weight portion oxidation inhibitor are evenly mixed, add 370～400 weight portion magnetic materials, stir, obtain magnetic resin and stick with paste;
Magnetic resin is stuck with paste and is uniformly coated on 60～100 weight portion glass fabric upper surfaces, is coated with uniform resin paste glass cloth and has formed prepreg through 120～180 ℃ of baking 3-10min, and the quality that the gained prepreg is every square metre is 700 to 3000 grams;
Prepreg is pressed the required size cutting, according to the desired thickness laying, 155～200 ℃ hot-forming, cooling obtains said lamination magnetic conductive board then; Said compound resin is the blend of bisphenol A type epoxy resin, novolac epoxy resin, multiple functionality epoxide resin.
The manufacturing approach of lamination magnetic conductive board of the present invention, wherein: bisphenol A type epoxy resin 10-50 weight portion, novolac epoxy resin 30-70 weight portion, multiple functionality epoxide resin 10-40 weight portion.
The manufacturing approach of lamination magnetic conductive board of the present invention, wherein: also add the coupling agent of 0.3～1.5 weight portion and the double solvents of 20-40 weight portion in the said compound resin; Said coupling agent is the silane coupler of amino or epoxy radicals end-blocking; Described double solvents is the mixture of solvent of 120-160 ℃ of solvent and 10～30 weight portion boiling point of 40-70 ℃ of 10～20 weight portion boiling point.
The manufacturing approach of lamination magnetic conductive board of the present invention, wherein: said oxidation inhibitor is the mixture that Hinered phenols and thio-2 acid dibasic acid esters or phosphorous acid esters oxidation inhibitor mix with mass ratio 3/2～7/3.
The manufacturing approach of lamination magnetic conductive board of the present invention, wherein: the said soft magnetic material mixture that to be secondary reduction iron powder or secondary reduction iron powder mix with mass ratio 3/2-3/1 with the iron-nickel alloy powder, particle grain size is 100～1000 orders; Said glass fabric is that alkali-free glass fiber cloth or electrical glass cloth are the plain weave glass fabric, and surface density is every square meter 60 to 250 grams.
Magnetic material content is high in the lamination magnetic conductive board of the present invention, and magnetic property is good, the more effective electric efficiency of improving of ability; Because the magnetic material surface is by resin-coated, the insulation property of magnetic conductive board are improved to a certain extent; Lamination magnetic conductive board of the present invention has excellent mechanical property, and bending strength is more than or equal to 280MPa under the normality, and 155 ℃ of bending strengths are more than or equal to 210MPa, and hot conservation rate is more than 75%; Lamination magnetic conductive board thermal stability of the present invention is high, handles 24h at 200 ℃ and phenomenons such as layering, cracking, foaming do not occur, thereby prolong magnetic conductive board useful life, has further prolonged the useful life of motor; Resin in the lamination magnetic conductive board of the present invention adopts compound resin, and the epoxy resin through different structure and molecular weight provides higher cohesive force and heat resistance, improves the combination property of magnetic conductive board.
The manufacturing approach of lamination magnetic conductive board of the present invention; Adopt the laminating moulding; The prepreg manufacture process is on alkali-free glass fiber cloth, evenly to coat soft magnetism powder compound resin to stick with paste, and through vertical or horizontal chamber furnace (oven), forms prepreg; Again the prepreg HTHP that superposes is pressed into magnetic conductive board, technology is easy.
Embodiment
Embodiment 1:
Compound resin 100 weight portions, DADPS 30 weight portions, boron trifluoride mono aminoethane 1.0 weight portions, double solvents 30 weight portions, 2; The two octadecanol esters of two-three grades of butyl of 6--4-sylvan and thio-2 acid evenly mix with mixture 0.7 weight portion, KH550 0.3 weight portion that mass ratio 3/2 mixes; Slowly at the uniform velocity add 100 order reduced iron powders, 370 weight portions and stir with homogenizer; Obtain in the pasty state the soft magnetism resin paste of viscosity 20000mPa.s; Magnetic resin is stuck with paste on the alkali-free glass fiber cloth or electrical glass cloth (every weight per square meter 60 grams) surface that is uniformly coated on 100 weight portions; Be coated with uniform resin paste glass cloth through vertical heater; 120 ℃ of furnace temperature; 0.5 meter of speed of a motor vehicle per minute, the resin paste glass cloth that from stove, comes out has become prepreg, and the quality that the gained prepreg is every square metre is 800 grams; Prepreg is pressed the required size cutting, and thickness is pressed the mode laying of alkali-free glass fiber cloth layer-magnetic resin layer-alkali-free glass fiber cloth-magnetic resin layer as requested, at 175 ℃, and hot pressing moulding in 4 hours in the press of 15MPa; Cooling then; Carry out cutting process by size and obtain the lamination magnetic conductive board; Above-mentioned compound resin is the blend of bisphenol A type epoxy resin, novolac epoxy resin, multiple functionality epoxide resin, wherein, and bisphenol A type epoxy resin 10 weight portions; Novolac epoxy resin 60 weight portions, multiple functionality epoxide resin 30 weight portions; Above-mentioned double solvents is the mixture of 5 weight portion acetone and 25 parts by weight of toluene.
Embodiment 2:
Compound resin 100 weight portions, DADPS 30 weight portions, boron trifluoride mono aminoethane 1.0 weight portions, double solvents 30 weight portions, 2; The two octadecanol esters of two-three grades of butyl of 6--4-sylvan and thio-2 acid evenly mix with mixture 0.7 weight portion, KH550 0.3 weight portion that mass ratio 3/2 mixes; Slowly at the uniform velocity add 100 order reduced iron powders, 370 weight portions and stir with homogenizer; Obtain in the pasty state the soft magnetism resin paste of viscosity 20000mPa.s; Magnetic resin is stuck with paste on the alkali-free glass fiber cloth or electrical glass cloth (every weight per square meter 60 grams) surface that is uniformly coated on 100 weight portions; Be coated with uniform resin paste glass cloth through vertical heater; 120 ℃ of furnace temperature; 0.5 meter of speed of a motor vehicle per minute, the resin paste glass cloth that from stove, comes out has become prepreg, and the quality that the gained prepreg is every square metre is 700 grams; Prepreg is pressed the required size cutting, and thickness is pressed the mode laying of alkali-free glass fiber cloth layer-magnetic resin layer-alkali-free glass fiber cloth-magnetic resin layer as requested, at 175 ℃, and hot pressing moulding in 4 hours in the press of 15MPa; Cooling then; Carry out cutting process by size and obtain the lamination magnetic conductive board; Above-mentioned compound resin is the blend of bisphenol A type epoxy resin, novolac epoxy resin, multiple functionality epoxide resin, wherein, and bisphenol A type epoxy resin 50 weight portions; Novolac epoxy resin 30 weight portions, multiple functionality epoxide resin 20 weight portions; Above-mentioned double solvents is the mixture of 5 weight portion acetone and 25 parts by weight of toluene.
Embodiment 3:
Compound resin 100 weight portions, dicyandiamide 5 weight portions, glyoxal ethyline 0.05 weight portion, double solvents 25 weight portions, 2; Two-three grades of butyl of 6--4-sylvan and trioctyl phosphate evenly mix with mixture 1.5 weight portions, the KH5600.5 weight portion that mass ratio 5/3 mixes; Slowly at the uniform velocity add mixture 390 weight portions that 1000 order secondary reduction iron powders and iron-nickel alloy powder mix with mass ratio 3/1 and stir with homogenizer; Obtain in the pasty state, the magnetic resin of viscosity 100000mPa.s is stuck with paste; Magnetic resin is stuck with paste on the alkali-free glass fiber cloth or electrical glass cloth (every weight per square meter 250 grams) surface that is uniformly coated on 90 weight portions; Be coated with uniform resin paste glass cloth through horizontal chamber furnace (oven); Furnace temperature 180 degree; The speed of a motor vehicle is from 5 meters of per minutes, and the resin paste glass cloth that from stove, comes out has become prepreg, and the quality that the gained prepreg is every square metre is 2000 grams; Prepreg is pressed the required size cutting, and thickness is pressed the mode laying of alkali-free glass fiber cloth layer-magnetic resin layer-alkali-free glass fiber cloth-magnetic resin layer as requested, at 175 ℃, and hot pressing moulding in 10 hours in the press of 15MPa; Cooling then; Cut edge to handle by size and obtain the lamination magnetic conductive board; Above-mentioned compound resin is the blend of bisphenol A type epoxy resin, novolac epoxy resin, multiple functionality epoxide resin, wherein, and bisphenol A type epoxy resin 40 weight portions; Novolac epoxy resin 30 weight portions, multiple functionality epoxide resin 30 weight portions; Above-mentioned double solvents is the mixture of 10 weight portion acetone and 15 weight portion formamides.
Embodiment 4:
Compound resin 100 weight portions, dicyandiamide 5 weight portions, glyoxal ethyline 0.05 weight portion, double solvents 25 weight portions, 2; Two-three grades of butyl of 6--4-sylvan and trioctyl phosphate evenly mix with mixture 1.5 weight portions, the KH5600.5 weight portion that mass ratio 5/3 mixes; Slowly at the uniform velocity add mixture 390 weight portions that 1000 order secondary reduction iron powders and iron-nickel alloy powder mix with mass ratio 3/1 and stir with homogenizer; Obtain in the pasty state, the magnetic resin of viscosity 100000mPa.s is stuck with paste; Magnetic resin is stuck with paste on the alkali-free glass fiber cloth or electrical glass cloth (every weight per square meter 250 grams) surface that is uniformly coated on 90 weight portions; Be coated with uniform resin paste glass cloth through horizontal chamber furnace (oven); Furnace temperature 180 degree; The speed of a motor vehicle is from 5 meters of per minutes, and the resin paste glass cloth that from stove, comes out has become prepreg, and the quality that the gained prepreg is every square metre is 2300 grams; Prepreg is pressed the required size cutting, and thickness is pressed the mode laying of alkali-free glass fiber cloth layer-magnetic resin layer-alkali-free glass fiber cloth-magnetic resin layer as requested, at 175 ℃, and hot pressing moulding in 10 hours in the press of 15MPa; Cooling then; Cut edge to handle by size and obtain the lamination magnetic conductive board; Above-mentioned compound resin is the blend of bisphenol A type epoxy resin, novolac epoxy resin, multiple functionality epoxide resin, wherein, and bisphenol A type epoxy resin 20 weight portions; Novolac epoxy resin 70 weight portions, multiple functionality epoxide resin 10 weight portions; Above-mentioned double solvents is the mixture of 10 weight portion acetone and 15 weight portion formamides.
Embodiment 5:
Compound resin 100 weight portions, DADPS 25 weight portions, boron trifluoride mono aminoethane 0.5 weight portion, double solvents 20 weight portions, four (β-(3; Three grades of butyl of 5--4-hydroxy phenyl) propionic acid) pentaerythritol ester and three (nonyl phenyl) phosphite ester evenly mixes with mixture 1.5 weight portions, the KH7921.5 weight portion that mass ratio 2/1 mixes; Slowly at the uniform velocity add 600 order secondary reduction iron powder 400 weight portions and stir with homogenizer; Obtain in the pasty state, the magnetic resin of viscosity 20000mPa.s is stuck with paste; Magnetic resin is stuck with paste on the alkali-free glass fiber cloth or electrical glass cloth (every weight per square meter 250 grams) surface that is uniformly coated on 60 weight portions; Be coated with uniform resin paste glass cloth through vertical heater; Furnace temperature 180 degree; The speed of a motor vehicle is from 5 meters of per minutes, and the resin paste glass cloth that from stove, comes out has formed prepreg, and the quality that the gained prepreg is every square metre is 2800 grams; Prepreg is pressed the required size cutting, and thickness is pressed the mode laying laying of alkali-free glass fiber cloth layer-magnetic resin layer-alkali-free glass fiber cloth-magnetic resin layer as requested, at 200 ℃, and hot pressing moulding in 10 hours in the press of 15MPa; Cooling then; Carry out cutting process by size and obtain the lamination magnetic conductive board; Above-mentioned compound resin is the blend of bisphenol A type epoxy resin, novolac epoxy resin, multiple functionality epoxide resin, wherein, and bisphenol A type epoxy resin 40 weight portions; Novolac epoxy resin 50 weight portions, multiple functionality epoxide resin 10 weight portions; Above-mentioned double solvents is the mixture of 10 weight portion acetone and 10 parts by weight of toluene.
Embodiment 6:
Compound resin 100 weight portions, DADPS 25 weight portions, boron trifluoride mono aminoethane 0.5 weight portion, double solvents 20 weight portions, four (β-(3; Three grades of butyl of 5--4-hydroxy phenyl) propionic acid) pentaerythritol ester and three (nonyl phenyl) phosphite ester evenly mixes with mixture 1.5 weight portions, the KH7921.5 weight portion that mass ratio 2/1 mixes; Slowly at the uniform velocity add 600 order secondary reduction iron powder 400 weight portions and stir with homogenizer; Obtain in the pasty state, the magnetic resin of viscosity 20000mPa.s is stuck with paste; Magnetic resin is stuck with paste on the alkali-free glass fiber cloth or electrical glass cloth (every weight per square meter 250 grams) surface that is uniformly coated on 60 weight portions; Be coated with uniform resin paste glass cloth through vertical heater; Furnace temperature 180 degree; The speed of a motor vehicle is from 5 meters of per minutes, and the resin paste glass cloth that from stove, comes out has formed prepreg, and the quality that the gained prepreg is every square metre is 2900 grams; Prepreg is pressed the required size cutting, and thickness is pressed the mode laying laying of alkali-free glass fiber cloth layer-magnetic resin layer-alkali-free glass fiber cloth-magnetic resin layer as requested, at 200 ℃, and hot pressing moulding in 10 hours in the press of 15MPa; Cooling then; Carry out cutting process by size and obtain the lamination magnetic conductive board; Above-mentioned compound resin is the blend of bisphenol A type epoxy resin, novolac epoxy resin, multiple functionality epoxide resin, wherein, and bisphenol A type epoxy resin 30 weight portions; Novolac epoxy resin 30 weight portions, multiple functionality epoxide resin 40 weight portions; Above-mentioned double solvents is the mixture of 10 weight portion acetone and 10 parts by weight of toluene.
Comparative Examples 1:
Bisphenol A type epoxy resin 100 weight portions, DADPS 30 weight portions, boron trifluoride mono aminoethane 1.0 weight portions, double solvents 30 weight portions, 2; The two octadecanol esters of two-three grades of butyl of 6--4-sylvan and thio-2 acid evenly mix with mixture 0.7 weight portion, KH550 0.3 weight portion that mass ratio 3/2 mixes; Slowly at the uniform velocity add 100 order reduced iron powders, 370 weight portions and stir with homogenizer; Obtain in the pasty state the soft magnetism resin paste of viscosity 20000mPa.s; Magnetic resin is stuck with paste on the alkali-free glass fiber cloth or electrical glass cloth (every weight per square meter 60 grams) surface that is uniformly coated on 100 weight portions; Be coated with uniform resin paste glass cloth through vertical heater; 120 ℃ of furnace temperature; 0.5 meter of speed of a motor vehicle per minute, the resin paste glass cloth that from stove, comes out has become prepreg, and the quality that the gained prepreg is every square metre is 700 grams; Prepreg is pressed the required size cutting, and thickness is pressed the mode laying of alkali-free glass fiber cloth layer-magnetic resin layer-alkali-free glass fiber cloth-magnetic resin layer as requested, at 175 ℃, and hot pressing moulding in 4 hours in the press of 15MPa; Cooling is carried out cutting process by size and is obtained the lamination magnetic conductive board then; Above-mentioned double solvents is the mixture of 5 weight portion acetone and 25 parts by weight of toluene.
Comparative Examples 2:
Novolac epoxy resin 100 weight portions, dicyandiamide 5 weight portions, glyoxal ethyline 0.05 weight portion, double solvents 25 weight portions, 2; Two-three grades of butyl of 6--4-sylvan and trioctyl phosphate evenly mix with mixture 1.5 weight portions, the KH5600.5 weight portion that mass ratio 5/3 mixes; Slowly at the uniform velocity add mixture 390 weight portions that 1000 order secondary reduction iron powders and iron-nickel alloy powder mix with mass ratio 3/1 and stir with homogenizer; Obtain in the pasty state, the magnetic resin of viscosity 100000mPa.s is stuck with paste; Magnetic resin is stuck with paste on the alkali-free glass fiber cloth or electrical glass cloth (every weight per square meter 250 grams) surface that is uniformly coated on 90 weight portions; Be coated with uniform resin paste glass cloth through horizontal chamber furnace (oven); Furnace temperature 180 degree; The speed of a motor vehicle is from 5 meters of per minutes, and the resin paste glass cloth that from stove, comes out has become prepreg, and the quality that the gained prepreg is every square metre is 2200 grams; Prepreg is pressed the required size cutting, and thickness is pressed the mode laying of alkali-free glass fiber cloth layer-magnetic resin layer-alkali-free glass fiber cloth-magnetic resin layer as requested, at 175 ℃, and hot pressing moulding in 10 hours in the press of 15MPa; Cool off then, cutting edge to handle by size obtains the lamination magnetic conductive board, and above-mentioned double solvents is the mixture of 10 weight portion acetone and 15 weight portion formamides.
Comparative Examples 3:
Multiple functionality epoxide resin 100 weight portions, DADPS 25 weight portions, boron trifluoride mono aminoethane 0.5 weight portion, double solvents 20 weight portions, four (β-(3; Three grades of butyl of 5--4-hydroxy phenyl) propionic acid) pentaerythritol ester and three (nonyl phenyl) phosphite ester evenly mixes with mixture 1.5 weight portions, the KH7921.5 weight portion that mass ratio 2/1 mixes; Slowly at the uniform velocity add 600 order secondary reduction iron powder 400 weight portions and stir with homogenizer; Obtain in the pasty state, the magnetic resin of viscosity 20000mPa.s is stuck with paste; Magnetic resin is stuck with paste on the alkali-free glass fiber cloth or electrical glass cloth (every weight per square meter 250 grams) surface that is uniformly coated on 60 weight portions; Be coated with uniform resin paste glass cloth through vertical heater; Furnace temperature 180 degree; The speed of a motor vehicle is from 5 meters of per minutes, and the resin paste glass cloth that from stove, comes out has formed prepreg, and the quality that the gained prepreg is every square metre is 3000 grams; Prepreg is pressed the required size cutting, and thickness is pressed the mode laying laying of alkali-free glass fiber cloth layer-magnetic resin layer-alkali-free glass fiber cloth-magnetic resin layer as requested, at 200 ℃, and hot pressing moulding in 10 hours in the press of 15MPa; Cooling is carried out cutting process by size and is obtained the lamination magnetic conductive board then, and above-mentioned double solvents is the mixture of 10 weight portion acetone and 10 parts by weight of toluene.
Comparative Examples 4:
Compound resin 100 weight portions, DADPS 30 weight portions, boron trifluoride mono aminoethane 1.0 weight portions, acetone 30 weight portions, 2; The two octadecanol esters of two-three grades of butyl of 6--4-sylvan and thio-2 acid evenly mix with mixture 0.7 weight portion, KH550 0.3 weight portion that mass ratio 3/2 mixes; Slowly at the uniform velocity add 100 order reduced iron powders, 370 weight portions and stir with homogenizer; Obtain in the pasty state the soft magnetism resin paste of viscosity 20000mPa.s; Magnetic resin is stuck with paste on the alkali-free glass fiber cloth or electrical glass cloth (every weight per square meter 60 grams) surface that is uniformly coated on 100 weight portions; Be coated with uniform resin paste glass cloth through vertical heater; 120 ℃ of furnace temperature; 0.5 meter of speed of a motor vehicle per minute, the resin paste glass cloth that from stove, comes out has become prepreg, and the quality that the gained prepreg is every square metre is 700 grams; Prepreg is pressed the required size cutting, and thickness is pressed the mode laying of alkali-free glass fiber cloth layer-magnetic resin layer-alkali-free glass fiber cloth-magnetic resin layer as requested, at 175 ℃, and hot pressing moulding in 4 hours in the press of 15MPa; Cooling then; Carry out cutting process by size and obtain the lamination magnetic conductive board; Above-mentioned compound resin is the blend of bisphenol A type epoxy resin, novolac epoxy resin, multiple functionality epoxide resin, wherein, and bisphenol A type epoxy resin 10 weight portions; Novolac epoxy resin 60 weight portions, multiple functionality epoxide resin 30 weight portions.
Claims (10)
1. lamination magnetic conductive board, process by the raw material of following weight portion:
Compound resin 100,
Amine curing agent 3～35,
Curing accelerator 0.05～2,
Soft magnetic material 370～400,
Alkali-free glass fiber cloth or electrical glass cloth 60～100,
Oxidation inhibitor 0.7～1.5;
Said compound resin is the blend of bisphenol A type epoxy resin, novolac epoxy resin, multiple functionality epoxide resin.
2. lamination magnetic conductive board according to claim 1 is characterized in that: said bisphenol A type epoxy resin 10-50 weight portion, novolac epoxy resin 30-70 weight portion, multiple functionality epoxide resin 10-40 weight portion.
3. lamination magnetic conductive board according to claim 1 and 2 is characterized in that: said oxidation inhibitor is the mixture that Hinered phenols and thio-2 acid dibasic acid esters or phosphorous acid esters oxidation inhibitor mix with mass ratio 3/2～7/3.
4. lamination magnetic conductive board according to claim 3 is characterized in that: the coupling agent that also comprises 0.3～1.5 weight portion; Said coupling agent is the silane coupler of amino or epoxy radicals end-blocking.
5. lamination magnetic conductive board according to claim 4 is characterized in that: the said soft magnetic material mixture that to be secondary reduction iron powder or secondary reduction iron powder mix with mass ratio 3/2-3/1 with the iron-nickel alloy powder, and particle grain size is 100～1000 orders; Said alkali-free glass fiber cloth or electrical glass cloth are the plain weave glass fabric, and surface density is every square meter 60 to 250 grams.
6. the manufacturing approach of lamination magnetic conductive board comprises the steps:
100 weight portion compound resins, 3～35 weight portion amine curing agent, 0.05～2 weight portion curing accelerator, 0.7～1.5 weight portion oxidation inhibitor are evenly mixed, add 370～400 weight portion soft magnetic materials, stir, obtain the soft magnetism resin paste;
The soft magnetism resin paste is uniformly coated on 60～100 weight portion alkali-free glass fiber cloths or the electrical glass cloth surface; Be coated with uniform resin paste glass cloth and formed prepreg through 120～180 ℃ of baking 3-10min, the quality that the gained prepreg is every square metre is 700 to 3000 grams;
Prepreg is pressed the required size cutting, according to the desired thickness laying, 155～200 ℃ hot-forming, cooling obtains said lamination magnetic conductive board then; Said compound resin is the blend of bisphenol A type epoxy resin, novolac epoxy resin, multiple functionality epoxide resin.
7. the manufacturing approach of lamination magnetic conductive board according to claim 6 is characterized in that: bisphenol A type epoxy resin 10-50 weight portion, novolac epoxy resin 30-70 weight portion, multiple functionality epoxide resin 10-40 weight portion.
8. according to the manufacturing approach of claim 6 or 7 described lamination magnetic conductive boards, it is characterized in that: also add the coupling agent of 0.3～1.5 weight portion and the double solvents of 20-40 weight portion in the said compound resin; Said coupling agent is the silane coupler of amino or epoxy radicals end-blocking; Described double solvents is the mixture of solvent of 120-160 ℃ of solvent and 10～30 weight portion boiling point of 40-70 ℃ of 10～20 weight portion boiling point.
9. the manufacturing approach of lamination magnetic conductive board according to claim 8 is characterized in that: said oxidation inhibitor is the mixture that Hinered phenols and thio-2 acid dibasic acid esters or phosphorous acid esters oxidation inhibitor mix with mass ratio 3/2～7/3.
10. the manufacturing approach of lamination magnetic conductive board according to claim 9; It is characterized in that: the said soft magnetic material mixture that to be secondary reduction iron powder or secondary reduction iron powder mix with mass ratio 3/2-3/1 with the iron-nickel alloy powder, particle grain size is 100～1000 orders; Said alkali-free glass fiber cloth or electrical glass cloth are the plain weave glass fabric, and surface density is every square meter 60 to 250 grams.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106141861A CN102169744B (en) | 2010-12-30 | 2010-12-30 | Laminated magnetic conducting plate and manufacturing method thereof |
Applications Claiming Priority (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105226863A (en) * | 2015-11-10 | 2016-01-06 | 株洲时代新材料科技股份有限公司 | A kind of city rail vehicle linear electric motor primary coil high heat conductive insulating structure |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102371731A (en) * | 2011-09-25 | 2012-03-14 | 顾根山 | Planar resistance copper foil laminated plate coated with polytetrafluoroethylene glass |
| CN103862048B (en) * | 2012-12-07 | 2015-12-02 | 中国科学院理化技术研究所 | Method for preparing soft magnetic composite material by hot pressing |
| CN103131135B (en) * | 2013-02-05 | 2014-10-22 | 焦作市天益科技有限公司 | Laminated magnetic conductive plate raw material composition and production method for manufacturing laminated magnetic conductive plate |
| CN103254574B (en) * | 2013-05-28 | 2015-09-09 | 北京新福润达绝缘材料有限责任公司 | Glass felt layers pressing plate its preparation method |
| CN105280318A (en) * | 2014-07-04 | 2016-01-27 | 郑长茂 | Magnetic iron powder composition and preparation method thereof, magnetic core and inductor |
| CN111516282B (en) * | 2020-04-24 | 2022-03-18 | 湖北平安电工材料有限公司 | Preparation method of laminated mica magnetic conduction plate |
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| US5214839A (en) * | 1989-05-19 | 1993-06-01 | General Electric Company | Method of making dynamoelectric machines including metal filled glass cloth slot closure wedges |
| CN1953298A (en) * | 2006-10-16 | 2007-04-25 | 湘潭电机股份有限公司 | High magnetic laminated magnetic slot wedge |
| CN200962545Y (en) * | 2006-10-20 | 2007-10-17 | 周少华 | Magnetic slot wedge for motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS6277030A (en) * | 1985-09-27 | 1987-04-09 | Hitachi Ltd | Magnetic wedge for rotary electric machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5214839A (en) * | 1989-05-19 | 1993-06-01 | General Electric Company | Method of making dynamoelectric machines including metal filled glass cloth slot closure wedges |
| CN1953298A (en) * | 2006-10-16 | 2007-04-25 | 湘潭电机股份有限公司 | High magnetic laminated magnetic slot wedge |
| CN200962545Y (en) * | 2006-10-20 | 2007-10-17 | 周少华 | Magnetic slot wedge for motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105226863A (en) * | 2015-11-10 | 2016-01-06 | 株洲时代新材料科技股份有限公司 | A kind of city rail vehicle linear electric motor primary coil high heat conductive insulating structure |
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