CN101857724A - High-temperature insulation composite, insulated conductor and magnetic element - Google Patents
High-temperature insulation composite, insulated conductor and magnetic element Download PDFInfo
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- CN101857724A CN101857724A CN200910133088A CN200910133088A CN101857724A CN 101857724 A CN101857724 A CN 101857724A CN 200910133088 A CN200910133088 A CN 200910133088A CN 200910133088 A CN200910133088 A CN 200910133088A CN 101857724 A CN101857724 A CN 101857724A
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Abstract
The invention relates to a high-temperature insulation composite, an insulated conductor and a magnetic element. The high-temperature insulation composite comprises an organic material and inorganic bond materials, wherein the weight percent content of the inorganic bond materials is between 10% and 90%; and the high-temperature insulation composite still has strength and insulating property after being subject to the process of high temperature above 400 DEG C, can be used for manufacturing the novel integrated magnetic element with high performance; and an insulated coil coated with the high-temperature insulation coating can be directly embedded in magnetic materials requiring high temperature annealing/sintering, thereby greatly improving the production efficiency of the magnetic element and being suitable for large-scale bulk production, improving the space use ratio of the magnetic element, reducing the manufacturing cost of the magnetic element, and improving the power density and performance of relative electronic products.
Description
Technical field
The present invention relates to a kind of insulation composition, insulated conductor and magnetics, relate in particular to a kind of high-temperature insulation composite, use this high-temperature insulation composite as the insulated conductor of insulation coat and the magnetics that uses this insulated conductor.
Background technology
Magnetic such as transformer and inductance element is the critical elements that is widely used in power system or the electrical equipment.Magnetics mainly comprises coil and magnetic core, and wherein magnetic core can be made of for example soft magnetic materials.Be usually used at present magnetics magnetic core soft magnetic materials one for ferrocart core, use ferrocart core to make magnetics in the prior art, for example the method for inductance is as follows: at first, one lead is provided, and this lead applied common insullac and be shaped to coil, wherein Chang Yong common insullac material is temperature resistant grade insulating material such as the polyimide below 240 degree Celsius, polyester, polyester-imide, polymeric amide acyl usually.Then, the coil that applies common insullac is embedded in pressing and forming and curing in the ferrocart core, its technological temperature is all below 240 degree.At last, the coil corner cut moulding (Trim-Form) that will expose has the magnetics of a plurality of pins with formation.
Handle owing to need not high temperature (for example more than 400 degree) in the production process of making magnetics with ferrocart core, the coil that can directly use common insullac to apply is made magnetics, therefore it is simple to have production technique, advantages such as low price, but the magnetic loss of the magnetics that ferrocart core is made is bigger, magnetic electricity performance is the poorest, therefore only is applied to some at present in the less demanding electronic product of efficient.
Because it is relatively poor that the use ferrocart core is made the magnetic electricity performance of magnetics, therefore will obtain the high performance magnetic element need use for example iron aluminium silica flour core (FeAlSi), iron nickel powder core (FeNi), iron nickel manganese powder core (FeNiMo), iron silica flour core (FeSi), iron silicochromium powder core (FeSiCr), ferrite (for example: iron nickel zinc (FeNiZn), ferrimanganic zinc (FeMnZn)) magnetic material such as, yet make magnetics with these high performance magnetic materials and need pass through high temperature annealing/sintering process, the temperature of this high-temperature technology usually need in Celsius approximately 400 spend more than, and the coil that applies common insullac can't bear this hot environment.
Usually adopt magneticsubstance and the isolating way of coil in the mode that needs high temperature annealing/agglomerating magneticsubstance to make magnetics in the prior art, its making method is as follows: at first, and with for example magneticsubstance pressing and forming of iron aluminium silicon (FeAlSi).Subsequently, the magneticsubstance blank after the moulding is annealed/sintering under the hot environment of for example 650 degree Celsius.At last, the coil that applies common insullac is set around on the magneticsubstance behind this annealing/sintering, with the formation magnetics.Though the magnetics of this method made has preferable magnetic electricity performance, but adopt this method to still have higher relatively assembling difficulty and cost, low production efficiency, be not suitable for scale of mass production, made magnetics space availability ratio is lower, and the shortcomings such as electronic product that are not suitable for high power density.
Summary of the invention
For overcoming the defective of prior art, the object of the present invention is to provide a kind of high-temperature insulation composite, it is the composition that adds inorganic cohesive material in the organic materials, can be used as the insulation coat of lead, and (for example, Celsius subzero 60 spend about 200 degree extremely Celsius at low temperature, be generally room temperature) soft down, have toughness, and still have sufficient intensity and insulating property through the residue behind the high temperature (for example, more than 400 degree Celsius).
Another object of the present invention is to provide a kind of insulated conductor, this insulated conductor adopts high-temperature insulation composite as the insulation coat.The lead that has applied high-temperature insulation composite can turn to insulated coil or bend.Use insulated conductor of the present invention to come the insulated coil of coiling, can be embedded in needs behind pressing and forming, directly to carry out high temperature annealing/sintering in high temperature annealing/agglomerating magneticsubstance.The making method of this magnetics is greatly simplified with respect to structure and the making method of using the magnetics that needs high temperature annealing/agglomerating magneticsubstance making in the prior art, is suitable for the scale of mass production of magnetics, has improved production efficiency.
For reaching above-mentioned purpose, of the present invention one than the broad sense embodiment for a kind of high-temperature insulation composite is provided, comprise: organic materials; And inorganic cohesive material, the weight percent content of this inorganic cohesive material is between 10% to 90%; Wherein, this high-temperature insulation composite is still had intensity and insulating property after through the hot environment technology more than 400 degree Celsius.
For reaching above-mentioned purpose, of the present invention another than the broad sense embodiment for a kind of insulated conductor is provided, comprise at least: lead; And the insulation coat, be formed at the surface of this lead, and this insulation coat is made of a high-temperature insulation composite; Wherein, this high-temperature insulation composite comprises organic materials and the inorganic cohesive material of weight percent content between 10% to 90%, and this high-temperature insulation composite is still had intensity and insulating property after through the hot environment technology more than 400 degree Celsius.
For reaching above-mentioned purpose, of the present invention another than the broad sense embodiment for a kind of magnetics is provided, comprise at least: the magnetic body; And insulated conductor, turn to insulated coil, and be arranged at least in part in the magnetic body; Wherein, this insulated conductor comprises: lead; And the insulation coat, be formed at the surface of lead, and the coat that insulate is made of a high-temperature insulation composite; Wherein, high-temperature insulation composite comprises organic materials and the inorganic cohesive material of weight percent content between 10% to 90%, and this high-temperature insulation composite is still had intensity and insulating property after through the hot environment technology more than 400 degree Celsius.
In sum, the present invention proposes the composition that in organic materials, adds inorganic cohesive material, can obtain to be easy to form the high-temperature insulation composite of insulation coat, and soft at low temperatures, have toughness, and still have sufficient intensity and insulating property through the residue behind the high temperature.High-temperature insulation composite of the present invention can be applicable to make high-performance, novel integrated magnetics (winding embeddedmagnetic element), the insulated coil that is coated with this high-temperature insulation coat can directly be embedded in to be needed in high temperature annealing/agglomerating magneticsubstance, significantly improve the production efficiency of high performance magnetic element and be suitable for scale of mass production, improved the space availability ratio of magnetics, reduce the manufacturing cost of magnetics, improved the power density and the performance thereof of associated electrical product.The high-temperature insulation composite that adds inorganic cohesive material in the organic materials of the present invention also can be used in the application that other need high-temperature insulation.
Description of drawings
Figure 1A: be high-temperature insulation composite organic materials and the inorganic cohesive material blended internal structure before that shows preferred embodiment of the present invention without pyroprocessing.
Figure 1B: be residue and inorganic cohesive material (for example, low melting glass) the blended internal structure that shows high-temperature insulation composite organic materials in the process of pyroprocessing and after the cooling of preferred embodiment of the present invention.
Fig. 2 A: be to show that the high-temperature insulation composite that uses preferred embodiment of the present invention forms the structural representation of the insulation coat of lead.
Fig. 2 B: be the structural representation of Fig. 2 A in the AA cross section.
Fig. 3: be the making method schema that shows the insulated conductor of preferred embodiment of the present invention.
Fig. 4 A～Fig. 4 C: be to show that the insulated conductor with preferred embodiment of the present invention is applied to the structure flow chart of need through the integrated magnetics of high temperature annealing/agglomerating.
Fig. 5: be the making method schema that shows this magnetics.
Description of reference numerals in the above-mentioned accompanying drawing is as follows:
1: the insulation coat
2: lead
3: insulated conductor (or insulated coil)
4: the magnetic body
5: magnetics
11: organic materials
12: inorganic cohesive material
13: the product (or residue) after organic materials decomposes
14: liquid glass
15: infiltrate into the liquid glass composition in the residue
21,22: pin
S11～S12: the making method flow process of insulated conductor
S21～S24: the making method flow process of magnetics
Embodiment
Some exemplary embodiments that embody feature of the present invention and advantage will be described in detail in the explanation of back segment.Be understood that the present invention can have various variations on different modes, its neither departing from the scope of the present invention, and explanation wherein and accompanying drawing be when the usefulness that explain in itself, but not in order to restriction the present invention.
According to conception of the present invention, high-temperature insulation composite of the present invention can be applicable to the insulation coat of insulated conductor, and comprises organic materials and inorganic cohesive material, and wherein the weight percent content of inorganic cohesive material is between 10% to 90%.High-temperature insulation composite of the present invention is when low temperature, about subzero 60 degree for example Celsius are spent to Celsius 200 (being generally room temperature), tool flexibility and toughness, and through high temperature, more than 400 degree for example Celsius, be preferably between Celsius 400 the degree to Celsius 1000 the degree, after residue still have high strength and insulating property.Wherein, one of them is constituted the group family that organic materials can be made up of organosilicon resin, polyimide, polyester, polyester-imide, polyamidoimide and combination thereof, and not as limit.Inorganic cohesive material can be the inorganic sintered material.One of them is constituted the group family that inorganic cohesive material can be made up of low melting glass powder, ceramic particle/fiber, glass and the ceramic mixture, boric anhydride and the alumina particle mixture that coat low melting glass and combination thereof, and not as limit.
High-temperature insulation composite of the present invention, before without high-temperature technology, inorganic cohesive material (can be particle) wherein is distributed in the organic materials, has between the inorganic cohesive material to contact or do not contact, but does not form very strong connection.At this moment, the soft character of this high-temperature insulation composition and the intensity character that depends primarily on organic materials.Behind high-temperature technology through an assigned temperature, though the character of organic materials has (some organic materials of degenerating to a certain extent, polyvinyl alcohol for example, even can take place to decompose fully, gasify, volatilize), but because between the inorganic cohesive material wherein, and can form connection between the high temperature residue of inorganic cohesive material and organic materials, and the body resistivity of organic materials residue is higher than the 1M ohm-meter, therefore through behind the high temperature, still can have enough intensity and insulating property.In addition, inorganic cohesive material (for example, low melting glass) can change into liquid state in high-temperature annealing process, at this moment, even can repair organic materials automatically through the hair line between the residue behind the high temperature, therefore after cooling, still can keep enough intensity and insulating property.
Figure 1A shows high-temperature insulation composite organic materials and inorganic cohesive material blended internal structure before without pyroprocessing of preferred embodiment of the present invention, and Figure 1B shows the residue and inorganic cohesive material (for example, low melting glass) the blended internal structure of high-temperature insulation composite organic materials in the process of pyroprocessing and after the cooling of preferred embodiment of the present invention.Shown in Figure 1A, high-temperature insulation composite of the present invention comprises organic materials 11 and inorganic cohesive material 12, wherein organic materials 11 can be but is not limited to organosilicon, and inorganic cohesive material 12 can be but is not limited to low melting point solid glass powder, and its softening/sintering temperature is 450 degree Celsius approximately.At low temperatures, about subzero 60 degree for example Celsius were spent to Celsius 200, the contained organic materials 11 of high-temperature insulation composite provided flexibility and the intensity under the low temperature.At hot stage, the above hot environment of 400 degree for example Celsius, decomposition, vaporization (for example Pintsch process) have taken place in the contained organic materials 11 of high-temperature insulation composite, organic materials 11 (for example, the organosilicon resin) product after the decomposition (or claiming residue) 13 (is mainly silica compound, for example silicon-dioxide (SiO
2), contain siloxicon (SiCO) etc.).These residues 13 have very high thermotolerance and electrical insulating property, but quality is relatively loose, intensity is relatively low.Yet, at high temperature, inorganic cohesive material 12, for example the low melting glass powder changes into liquid glass 14, and infiltration in residue 13, and wherein label 15 is promptly represented the liquid glass composition that infiltrates in the residue 13.After cooling, room temperature for example, liquid glass 14 is transformed into solid-state again, but this structure is able to complete reservation, therefore by between the inorganic cohesive material 12, and the mutual binding between the product 13 after inorganic cohesive material 12 and the organic materials decomposition, can form complex network, make final product have enough intensity and insulating property.
Fig. 2 A shows that the high-temperature insulation composite that uses preferred embodiment of the present invention forms the structural representation of the insulation coat of lead, and Fig. 2 B is the structural representation of Fig. 2 A in the AA cross section.Shown in Fig. 2 A and Fig. 2 B, high-temperature insulation composite of the present invention can be coated on lead 2 surfaces to form insulation coat 1, can make insulated conductor 3 whereby.Insulated conductor 3 of the present invention can turn to insulated coil (also with label 3 representatives) or bend.Because high-temperature insulation composite of the present invention is when low temperature, about subzero 60 degree for example Celsius are spent to Celsius 200, tool flexibility and toughness, and through high temperature, more than 400 degree for example Celsius, be preferably between 400 degree Celsius to 1000 degree Celsius, after residue still have sufficient intensity and insulating property, so insulated coil that uses insulated conductor 3 coilings of the present invention to form, can be embedded in needs in high temperature annealing/agglomerating magneticsubstance, behind the magneticsubstance pressing and forming, directly carry out high temperature annealing/sintering process, so can make needs the structure and the making method of high temperature annealing/agglomerating magnetics greatly to simplify, and is suitable for the scale of mass production of magnetics, has improved production efficiency.
Fig. 3 is the making method schema that shows the insulated conductor of preferred embodiment of the present invention.As Fig. 2 A, Fig. 2 B and shown in Figure 3, at first, shown in step S11, the preparation high-temperature insulation composite, wherein the composition of this high-temperature insulation composite and characteristic repeat no more in this as previously mentioned.In certain embodiments, the preparation method of this high-temperature insulation composite is as follows: the organic materials with liquid state adds inorganic cohesive material by specified proportion earlier, and mixes.Wherein, one of them is constituted the group family that organic materials can be formed by organosilicon resin, polyimide, polyester, polyester-imide, polyamidoimide and combination thereof, and not as limit.One of them is constituted the group family that inorganic cohesive material can be formed by glass powder with low melting point end, ceramic particle/fiber, glass and the ceramic mixture, boric anhydride and the alumina particle mixture that coat low melting glass and combination thereof, and not as limit.The weight percent content of inorganic cohesive material is between 10% to 90%.Subsequently, shown in step S12, provide a lead, and the high-temperature insulation composite of liquid state is coated in the surface of this lead 2 equably, and through solidifying (for example, thermofixation, photocuring etc.), to obtain the insulation coat 1 of desired thickness, to finish the making of insulated conductor 3.Wherein, the thickness of insulation coat 1 can be 5 μ m to 200 μ m, but not as limit.In certain embodiments, in order to adjust the viscosity of liquid high-temperature insulation composite, make the technology that applies this high-temperature insulation composite on conductor 2 carry out easily, can add solvent, for example toluene, dimethylbenzene wait and realize.This high-temperature insulation composite also can be to make the semicure organic materials, and organosilicon for example is during blank, directly to wherein sneaking into inorganic cohesive material (low melting point is preferable).Subsequently, again high-temperature insulation composite is pushed, is coated on the lead 2, and make regelate.
Fig. 4 A～Fig. 4 C shows that the insulated conductor with preferred embodiment of the present invention is applied to the structure flow chart of need through the integrated magnetics of high temperature annealing/agglomerating, and Fig. 5 shows the making method schema of this magnetics.As Fig. 4 A, Fig. 4 B, Fig. 4 C and shown in Figure 5, magnetics 5 of the present invention comprises an insulated conductor 3 and a magnetic body 4, and wherein insulated conductor 3 turns to insulated coil, and is arranged at magnetic body 4 inside.Insulated conductor 3 comprises lead 2 and insulation coat 1, and wherein this insulation coat 1 is formed by the surface that high-temperature insulation composite is coated on lead 2, and this high-temperature insulation composite comprises organic materials and inorganic cohesive material.Wherein the weight percent content of inorganic cohesive material is between 10% to 90%.This high-temperature insulation composite is when low temperature, and for example Celsius subzero 60 spend about 200 degree extremely Celsius tool flexibility and toughness, and through high temperature, for example Celsius 400 the degree more than, be preferably between Celsius 400 the degree to Celsius 1000 the degree, after residue still have high strength and insulating property.
Please consult Fig. 4 A, Fig. 4 B, Fig. 4 C and Fig. 5 again, the making method of magnetics 5 of the present invention is as follows: at first, shown in step S21, an insulated conductor 3 is provided, wherein this insulated conductor 3 lead 2 surface-coated of turning to insulated coil and this insulated conductor 3 have high-temperature insulation coat 1.In this step, the production method of insulated conductor 3 repeats no more in this to embodiment illustrated in fig. 3 similar.Then, shown in step S22, provide a magneticsubstance, and insulated coil 3 is arranged at extrusion forming in the magneticsubstance.In certain embodiments, this magneticsubstance can be group family that iron aluminium silica flour core (FeAlSi), iron nickel powder core (FeNi), iron nickel manganese powder core (FeNiMo), iron silica flour core (FeSi), iron silicochromium powder core (FeSiCr), ferrite (for example: iron nickel zinc (FeNiZn), ferrimanganic zinc (FeMnZn)) and combination thereof formed one of them constitutes.In certain embodiments, insulated coil 3 is embedded in the magneticsubstance, and the pressure of magneticsubstance extrusion forming be can be for example 20ton/cm
2Subsequently, shown in step S23, the magneticsubstance that insulated coil 3 is set is carried out high temperature annealing/sintering process, to form magnetic body 4.In certain embodiments, the service temperature of this high temperature annealing/sintering process is more than 400 degree Celsius, is preferably between 400 degree Celsius to 1000 degree Celsius.In certain embodiments, the softening or sintering temperature of the inorganic cohesive material of insulating cover 1 is lower than a preset temp, for example annealing/the sintering temperature of magneticsubstance powder.At last, shown in step S24, the lead 2 that exposes to the formed magnetic body 4 of magneticsubstance is formed pin 21,22, to finish the making of magnetics 5.In certain embodiments, this magnetics 5 can be inductance, transformer, common mode inductance, magnetic amplifier, and not as limit.
Embodiment one
Organic materials can be the organosilicon resin OE6630 of DowCorning among the present invention, inorganic cohesive material can be the glass powder (is preferable with the glass for sealing powder) about softening temperature 450 degree Celsius approximately and the about 10 μ m of granular size, and wherein the weight percent content of glass powder is at 10%-90%.Subsequently, this composition evenly is coated in conductive line surfaces, and toasts, solidify.Insulation coat after the curing, after for some time, the intensity of sintered product, insulating property are still good through 650 degree sintering Celsius, and its body resistivity is higher than 1Mohm.m in the present embodiment, and when glass powder content 40% when above, intensity is higher than common iron aluminium silicon (FeAlSi).
Embodiment two
Organic materials can be polyimide among the present invention, inorganic cohesive material is the glass powder (is preferable with the glass for sealing powder) about softening temperature 450 degree Celsius approximately and the about 10 μ m of granular size, and wherein the weight percent content of glass powder is at 10%-90%.Subsequently, this composition evenly is coated in conductive line surfaces, and toasts, solidify.Insulation coat after the curing, after for some time, intensity, the insulating property of sintered product are good through 600 degree sintering Celsius, and its body resistivity is higher than 1Mohm.m in the present embodiment.
Embodiment three
Organic materials can be the organosilicon resin OE6630 of DowCorning among the present invention, inorganic cohesive material can be the glass powder (is preferable with the glass for sealing powder) about softening temperature 450 degree Celsius approximately and the about 10 μ m of granular size, and wherein organic materials and inorganic cohesive material were with 10: 10,10: 7,10: 6,10: 4 equal proportion preparation high-temperature insulation composites.Subsequently, these compositions are coated in conductive line surfaces respectively equably, and toast, solidify, wherein being coated to the lip-deep insulation coat thickness of lead (for example copper cash) is about 30 μ m.Then, insulated conductor is turned to insulated coil, and be embedded in the magnetic material powder of iron aluminium silicon (FeAlSi), with for example 20ton/cm
2The pressure pressing and forming.Subsequently, through about one hour of 650 degree annealing Celsius, the magnetics that obtains, inductance for example, substitute the ferrocart core inductance of same size and sensibility reciprocal, be applied to obtain higher efficient on DC power converter (POL) platform, especially light-load efficiency, withstand voltage more than 12V between the every circle of coil after tested.
In certain embodiments, because the magneticsubstance in the magnetics, the lead of insulated coil (for example copper cash), there is the inconsistent situation of thermal expansivity (CTE) between the formed insulation coat of high-temperature insulation composite, therefore in the process of cooling behind high temperature annealing/sintering, slight crackle may appear in the part position on this insulation coat, can solve by following method when this situation takes place.Method one: adjust the kind and the content of organic materials, inorganic cohesive material, will be adjusted to as far as possible that (5ppm-17ppm " 10 between lead (for example copper cash) between insulated coil and the magneticsubstance through the thermal expansivity (CTE) of the insulation coat behind the high temperature
-6").Method two: reduce the softening or sintering temperature of inorganic cohesive material, for example select the glass of tool low melting point or softening temperature for use, 300 degree for example Celsius.But, if magnetics, inductance for example, (for example: voltage 12V between the coil adjacent turn), the partial fracture of insulation coat is an acceptable, because only depend on air isolation also can satisfy such insulating requirements only to be used for the low pressure occasion.Make the magnetics of high pressure (for example 600V) at needs, inductance for example, can solve on the one hand by avoiding breaking through insulation coat after the pyroprocessing, on the other hand, also can make that the actual voltage value between adjacent every circle coil still maintains on the lower value by adjusting the winding of insulated coil.
In certain embodiments, in the process of making magnetics, with coil and magnetic powder material pressing and forming together the time, may take place because magneticsubstance and coil method resilience are inconsistent, and finally cause stock generation disruptive phenomenon after the pressing, at this problem, can be by in the magnetic powder material, adding organic cohesive material, for example the organosilicon resin is alleviated.
In certain embodiments, in the process of making magnetics, magneticsubstance can be filled between the circle and circle of insulated coil, may reduce the sensibility reciprocal of inductance like this, can soak once high-temperature insulation composite of the present invention and curing again by the insulated coil that coiling is good to this, make to seal fully between circle and the circle that magneticsubstance no longer infiltrates between circle and the circle, thereby improves the performance of this magnetics.
In certain embodiments, magnetics of the present invention can be annealed under reducing atmosphere/sintering process, when lead 2 materials of the insulated coil 3 that utilizes during for copper cash, if the too high oxygen level in the copper cash, might embrittlement through the copper cash behind the high-temperature annealing process.Reducing gas, as hydrogen, with the Red copper oxide generation redox reaction that is dissolved in the copper, generate copper and water vapor, when the pressure of water vapor internal fissure will take place during greater than the intensity of copper, thereby the intensity that makes and conductivity reduce, the therefore oxygen element content in the may command wire rod when selecting copper material, and 200ppm is preferable for example to be lower than.Also same consideration can be arranged when using the conductor material of other kinds insulated coil.
In sum, the present invention proposes the composition that in organic materials, adds inorganic cohesive material, can obtain to be easy to form the high-temperature insulation composite of insulation coat, and soft at low temperatures, have toughness, and still have sufficient intensity and insulating property through the residue behind the high temperature.High-temperature insulation composite of the present invention can be applicable to make high-performance, novel integrated magnetics (winding embeddedmagnetic element), the insulated coil that is coated with this high-temperature insulation coat can directly be embedded in to be needed in high temperature annealing/agglomerating magneticsubstance, significantly improve the production efficiency of high performance magnetic element and be suitable for scale of mass production, improved the space availability ratio of magnetics, reduce the manufacturing cost of magnetics, improved the power density and the performance thereof of associated electrical product.The high-temperature insulation composite that adds inorganic cohesive material in the organic materials of the present invention also can be used in the application that other need high-temperature insulation.
The present invention must be appointed by those of ordinary skills and executes that the craftsman thinks and be to modify as all, right neither scope of taking off as the desire protection of attached claim institute.
Claims (26)
1. high-temperature insulation composite comprises:
Organic materials; And
Inorganic cohesive material, the weight percent content of this inorganic cohesive material is between 10% to 90%;
Wherein, this high-temperature insulation composite is still had intensity and insulating property after through the hot environment technology more than 400 degree Celsius.
2. high-temperature insulation composite as claimed in claim 1, wherein this organic materials body resistivity of its residue after through the high-temperature technology of an assigned temperature is higher than the 1M ohm-meter.
3. high-temperature insulation composite as claimed in claim 1, wherein this organic materials is gasified totally behind the high-temperature technology through an assigned temperature.
4. high-temperature insulation composite as claimed in claim 1, wherein this organic materials by organosilicon resin, polyimide, polyester, polyester-imide, polyamidoimide and combination thereof form group family one of them constituted.
5. high-temperature insulation composite as claimed in claim 1, wherein this inorganic cohesive material is the inorganic sintered material.
6. high-temperature insulation composite as claimed in claim 1, wherein the group family that forms by glass powder, ceramic particle/fiber, glass and the ceramic mixture, boric anhydride and the alumina particle mixture that coat glass and combination thereof of this inorganic cohesive material one of them constituted.
7. high-temperature insulation composite as claimed in claim 1, wherein softening the or sintering temperature of this inorganic cohesive material is lower than a preset temp.
8. high-temperature insulation composite as claimed in claim 1, wherein this organic materials is the organosilicon resin, this inorganic cohesive material is the low melting glass powder.
9. high-temperature insulation composite as claimed in claim 1, wherein the low temperature environment of this high-temperature insulation composite in subzero 60 degree Celsius to 200 degree Celsius has flexibility and toughness.
10. high-temperature insulation composite as claimed in claim 1, wherein this high-temperature insulation composite is still had intensity and insulating property in 400 degree Celsius to hot environment technologies of 1000 degree Celsius.
11. high-temperature insulation composite as claimed in claim 1, wherein this high-temperature insulation composite is coated on the surface of a lead to form an insulation coat.
12. an insulated conductor comprises at least:
One lead; And
One insulation coat be formed at the surface of this lead, and this insulation coat is made of a high-temperature insulation composite;
Wherein, this high-temperature insulation composite comprises organic materials and the inorganic cohesive material of weight percent content between 10% to 90%, and this high-temperature insulation composite is still had intensity and insulating property after through the hot environment technology more than 400 degree Celsius.
13. insulated conductor as claimed in claim 12, the thickness of the coat that wherein should insulate is between 5 μ m to 200 μ m.
14. insulated conductor as claimed in claim 12, wherein insulated conductor turns to insulated coil, this insulated coil is arranged in the magneticsubstance, this magneticsubstance through extrusion forming and through 400 degree Celsius formation one magnetic body after above this hot environment technology, and this insulated coil and this magnetic body form a magnetics.
15. insulated conductor as claimed in claim 14, wherein this hot environment technology annealing/sintering process that is this magneticsubstance.
16. insulated conductor as claimed in claim 14, wherein this magneticsubstance by iron aluminium silica flour core, iron nickel powder core, iron nickel manganese powder core, iron silica flour core, iron silicochromium powder core, ferrite and combination thereof form group family one of them constituted.
17. insulated conductor as claimed in claim 14, wherein this magnetics is inductance, transformer, common mode inductance or magnetic amplifier.
18. insulated conductor as claimed in claim 14, the thermal expansivity of the coat process that wherein should insulate high-temperature process is between this lead and this magneticsubstance of this insulated coil.
19. insulated conductor as claimed in claim 14, wherein softening the or sintering temperature of the inorganic cohesive material of this of this insulating cover is lower than the annealing or the sintering temperature of this magneticsubstance.
20. insulated conductor as claimed in claim 12, wherein the oxygen element content of this lead is lower than 200ppm.
21. a magnetics comprises at least:
One magnetic body; And
One insulated conductor turns to insulated coil, and is arranged at least in part in this magnetic body, and this insulated conductor comprises:
One lead; And
One insulation coat be formed at the surface of this lead, and this insulation coat is made of a high-temperature insulation composite;
Wherein, this high-temperature insulation composite comprises organic materials and the inorganic cohesive material of weight percent content between 10% to 90%, and this high-temperature insulation composite is still had intensity and insulating property after through the hot environment technology more than 400 degree Celsius.
22. magnetics as claimed in claim 21, wherein this magnetic body is made of a magneticsubstance, forms this magnetic body after this hot environment technology more than this magneticsubstance is spent through extrusion forming and through Celsius 400.
23. magnetics as claimed in claim 22, wherein this hot environment technology annealing/sintering process that is this magneticsubstance.
24. magnetics as claimed in claim 22, wherein this magneticsubstance by iron aluminium silica flour core, iron nickel powder core, iron nickel manganese powder core, iron silica flour core, iron silicochromium powder core, ferrite and combination thereof form group family one of them constituted.
25. magnetics as claimed in claim 21, wherein the group family that forms by glass powder, ceramic particle/fiber, glass and the ceramic mixture, boric anhydride and the alumina particle mixture that coat glass and combination thereof of this inorganic cohesive material one of them constituted.
26. magnetics as claimed in claim 21, wherein this organic materials be organosilicon resin, polyimide, polyester, polyester-imide, polyamidoimide and combination thereof form group family one of them constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910133088 CN101857724B (en) | 2009-04-07 | 2009-04-07 | High-temperature insulation composition, insulated conductor and magnetic element |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910133088 CN101857724B (en) | 2009-04-07 | 2009-04-07 | High-temperature insulation composition, insulated conductor and magnetic element |
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| Publication Number | Publication Date |
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| CN101857724A true CN101857724A (en) | 2010-10-13 |
| CN101857724B CN101857724B (en) | 2013-05-29 |
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| CN 200910133088 Active CN101857724B (en) | 2009-04-07 | 2009-04-07 | High-temperature insulation composition, insulated conductor and magnetic element |
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