CN102254648A - Production of electrical insulation and insulated products - Google Patents
Production of electrical insulation and insulated products Download PDFInfo
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- CN102254648A CN102254648A CN201110084796XA CN201110084796A CN102254648A CN 102254648 A CN102254648 A CN 102254648A CN 201110084796X A CN201110084796X A CN 201110084796XA CN 201110084796 A CN201110084796 A CN 201110084796A CN 102254648 A CN102254648 A CN 102254648A
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- 238000004519 manufacturing process Methods 0.000 title abstract description 19
- 238000010292 electrical insulation Methods 0.000 title 1
- 239000000945 filler Substances 0.000 claims abstract description 68
- 239000000203 mixture Substances 0.000 claims abstract description 48
- 238000000034 method Methods 0.000 claims abstract description 36
- 239000000615 nonconductor Substances 0.000 claims abstract description 35
- 238000002156 mixing Methods 0.000 claims abstract description 34
- 239000011810 insulating material Substances 0.000 claims abstract description 23
- 230000003068 static effect Effects 0.000 claims abstract description 11
- 238000000465 moulding Methods 0.000 claims abstract description 10
- 238000005266 casting Methods 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims description 22
- 238000007872 degassing Methods 0.000 claims description 8
- 238000005029 sieve analysis Methods 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 4
- 239000003989 dielectric material Substances 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 25
- 239000002986 polymer concrete Substances 0.000 description 15
- 239000000463 material Substances 0.000 description 14
- 239000004593 Epoxy Substances 0.000 description 13
- 239000003795 chemical substances by application Substances 0.000 description 12
- 229920000647 polyepoxide Polymers 0.000 description 12
- 239000000377 silicon dioxide Substances 0.000 description 11
- 239000000470 constituent Substances 0.000 description 9
- 239000003822 epoxy resin Substances 0.000 description 9
- 230000014509 gene expression Effects 0.000 description 8
- 229920005989 resin Polymers 0.000 description 8
- 239000011347 resin Substances 0.000 description 8
- 238000010348 incorporation Methods 0.000 description 7
- 238000005457 optimization Methods 0.000 description 7
- 239000006185 dispersion Substances 0.000 description 6
- 238000009413 insulation Methods 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 5
- 238000001000 micrograph Methods 0.000 description 5
- 229920003319 Araldite® Polymers 0.000 description 4
- 150000008065 acid anhydrides Chemical class 0.000 description 4
- 235000013312 flour Nutrition 0.000 description 4
- 239000012212 insulator Substances 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000001878 scanning electron micrograph Methods 0.000 description 3
- 239000011800 void material Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 239000011353 cycloaliphatic epoxy resin Substances 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 230000007850 degeneration Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007723 die pressing method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 238000010237 hybrid technique Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000010944 pre-mature reactiony Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004626 scanning electron microscopy Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000009849 vacuum degassing Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/40—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes epoxy resins
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B19/00—Apparatus or processes specially adapted for manufacturing insulators or insulating bodies
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/56—Insulating bodies
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
This invention relates to a method (100) for manufacturing an electrical insulator for medium or high voltage equipment. The method (100) comprises the steps of forcing all liquid components of an insulating material of the electric insulator through a static mixture (101); adding at least one filler to the components (102); forcing the components with the at least one filler through a tube comprising a fast-turning screw mixing device mixing the components with the at least one filler to a final mixture of the insulating material (103); leading the final mixture to a mould, for example of a hot press, or a mould for vacuum casting, the mould being located in a vacuum chamber the inlet of the vacuum chamber connected to an outlet of the mixing device that is fluidly connected to the mould (104a, 104b); forming an electrical insulator by at least partly curing the final mixture (105); and moulding the electrical insulator (106). The curing may be part of the moulding.
Description
Technical field
The present invention relates in general to the electric insulation product and is particularly related to height or middle die pressing product.Presents is paid close attention to the details in the manufacturing process that for example intercepts insulating products (insulated product) such as insulator.
The present invention is based on and be used to make the method for electrical insulator and the electrical insulator of making by this method according to independent claims.
Background technology
In electric equipment industry, the heat cured insulation material is used for for example producing dry type distribution transformer, pressure (MV) embedded electrode and other insulation.The mixing cost considerable time of highly-filled insulating material, usually be higher than 1 hour.Standard technology comprises that resin mixes in two jars in being equipped with turbomixer respectively with filler with filler and curing agent, so that prevent premature reaction.Reach good fillers dispersed in two components (component) after, they are urged by so-called static mixer simultaneously and inject mould.
Molding (moulding) principle is traditional vacuum pressing and casting (vacuum casting) or the automatic pressure gelization technology of vacuum-assisted (also can).
The some reliable hybrid system that is used for producing this pourable compound (compound) commercial be obtainable, be obtainable for example from Hedrich Vacuum Systems and Huebers Verfahrenstechnik.
Summary of the invention
The improvement and the high efficiency method that are provided for producing electrical insulator can be regarded purpose of the present invention as.
The different hybrid techniques that this purpose is used to handle insulating material by employing quicken production processes and realize.Replace using comprising the separately conventional system of container that is used for resin and curing agent that is equipped with turbomixer, this invention system is based on the fast rotational conveying worm.
According to embodiments of the invention, in being provided for making or the method for the electrical insulator of high-tension apparatus, this method may further comprise the steps: all liq component of the insulating material of pushing electrical insulator is passed through static mixer, add at least one filler and give this component, thereby push the final mixture that this component and this at least one filler are mixed into this component and this at least one filler by the pipeline that comprises fast steering spiral mixing arrangement insulating material, the outlet (flow type be connected to mould) of this final mixture by this mixing arrangement guided to mould, form electrical insulator by partly solidified at least (curing) this final mixture, and this electrical insulator of molding.
According to another embodiment of the invention, in being provided for making or the method for the electrical insulator of high-tension apparatus, this method may further comprise the steps: all liq component of the insulating material of pushing electrical insulator is passed through static mixer, add at least one filler and give this component, thereby push the final mixture that this component and this at least one filler are mixed into this component and this at least one filler by the pipeline that comprises fast steering spiral mixing arrangement insulating material, this final mixture is guided to the mould that is used for vacuum pressing and casting, and (this mould is positioned at vacuum chamber, the inlet of this vacuum chamber is connected to the outlet of mixing arrangement, its flow type is connected to mould), form electrical insulator by partly solidified at least this final mixture, and this electrical insulator of molding.
But the part of above-described curing molding.
According to another one exemplary embodiment, the method for the embodiment that based on context mentions is provided, wherein at least two fillers add component to, and wherein the mixed proportion of the filler of insulating material is followed the Fuller sieve-analysis curve, and it has Fuller and distributes:
Wherein d is the particle size of filler, and D is a maximum particle size, for example is 300 μ m, and P is the ratio that is less than or equal to the particle of d, and n is gradation factor, may be 0.37 or 0.5.
The Fuller sieve-analysis curve is described the optimization filler composite materials of mixture, and it provides the optimization characteristics of mixture, for example the intensity of the optimization of mixture and porosity or cavity etc.
By composition, can optimize the compactness (compactness) of the insulator of manufacturing, thereby the ideal relationship between filler and the component/matrix is provided according to two fillers of Fuller distribution optimization mentioned above.
Component can comprise curing agent and resin.
Replace using batch mixer, use to have the very continuous mixing device of high shear force.High shear force is compared with conventional turbomixer and is reduced incorporation time considerably, thereby this routine turbomixer typically causes quite long program with the dispersion of low-shearing force mixed fillers in resin and curing agent.
But insulating material standard filling epoxy resin (for example having a filler size), silicon dioxide typically, filer content with about 65% percentage by weight (corresponding to about 44% percent by volume).This insulating material can comprise polymer concrete (polymer concrete).
According to another embodiment of the invention, can use at least two fillers, filer content (corresponding to about 49% to 91% percent by volume) between 70% and 96% percentage by weight wherein, and typically between 83% and 85% percentage by weight (corresponding to about 60% to 70% percent by volume).Polymer concrete can be used for each in the filler.
Compare and to reduce to 1/10 by applying time that the dispersion of higher shearing force mixed fillers in resin and curing agent need and prior-art devices (for example turbomixer etc.), because mixing efficiency significantly increases.Filler, resin and curing agent can be regarded the component of the insulating material of electrical insulator as.
According to embodiments of the invention, in being provided for making or the method for the insulator of high-tension apparatus, wherein push material, for example cylinder pipe etc. by pipeline, its inside has the spiral of the fast steering that causes high shear force, thereby causes the fine dispersion of filler in material matrix.Component is being shorter than in one minute by mixing auger, and it comprises the film degasification unit.The high shear force that is produced by this system allows higher filer content, and it can reach by using a plurality of fillers.
In addition, this invention method helps following advantage:
The significantly incorporation time that reduces and therefore the production throughput of increase
Filler particles sedimentation risk that reduces and better dispersion
Higher filer content and the cost (experimentally confirm the silicon dioxide up to 85% percentage by weight, by the different fillers of the bigger quantity of use and bigger maximum filler granularity, higher solids content will be possible) that therefore reduces
Because the lower spillage of material that the low relatively volume of limited hybrid channel causes
Less wear more: mixing auger is with special wear-resistant alloy manufacturing, and therefore for example wearing and tearing filler such as aluminium oxide can be handled with it.
Additional embodiments of the present invention, advantage and application will become obvious by following detailed description and accompanying drawing by claim or claim combination.
Description of drawings
Purport of the present invention will illustrate in greater detail with reference to one exemplary embodiment (it illustrates in the accompanying drawings) in following text, and accompanying drawing schematically illustrates following:
Fig. 1 is the light micrograph that adopts first sample of the mixed polymer concrete of conventional turbomixer;
Fig. 2 is the light micrograph that adopts second sample of the mixed polymer concrete of conventional turbomixer;
Fig. 3 is according to one exemplary embodiment of the present invention, with the general survey (scanning electron micrograph) of the light micrograph of the sample of the mixed invention polymer concrete of continuous helical blender;
Fig. 4 is the close-up illustration IV according to one exemplary embodiment of the present invention, scanning electron micrograph shown in Figure 3;
Fig. 5 is the schematic diagram of Fuller sieve-analysis curve with example of different fillers;
Fig. 6 A is according to one exemplary embodiment of the present invention, is used for making or the flow chart of the method for the electrical insulator of high-tension apparatus; And
Fig. 6 B is according to another exemplary embodiment of the present invention, is used for making or the flow chart of the method for the electrical insulator of high-tension apparatus.
Embodiment
During when the microphoto of the polymer concrete of relatively producing with the method according to this invention with the microphoto of the polymer concrete of the conventional production method production of adopting the vane type mixing arrangement, it is clear that the difference of technique effect of the present invention will become.
When paying close attention to Fig. 1, it shows the light micrograph of first sample that adopts the mixed polymer concrete of conventional turbomixer, can discern three recognizable zones substantially.Label 1 expression has the big silica filler particle of the typical mean diameter of 0.3mm, and 2 expression spaces, and 3 expressions have the young waiter in a wineshop or an inn's cilicon oxide filler particle of typical mean diameter of 0.016mm and the zone of epoxy matrix.Especially, particle 1 and space 2 have sizable size.
If insulating material is subjected to high electric field action, big void size may cause partial discharge, and it may cause the life period degeneration of material at insulating products.
The most common ground, the insulation formulation is made up of epoxy resin, curing agent, catalyst, filler and other liquid or solid additives.Typical filer content is 65% percentage by weight.
Similarly, the situation in Fig. 2 shows the light micrograph of second sample of the polymer concrete of producing by mixed these compositions of the conventional production method that adopts the vane type mixing arrangement.The difference that second sample compared with first sample shown in Figure 1 is that void content can significantly reduce by the combination of using vacuum degassing and vibration.Once more, can discern three recognizable zones substantially.
The scanning electron micrograph of first sample of the polymer concrete that mixes with the invention production method according to the present invention is shown in Figure 3.Although the scale of this microphoto is 500 μ m (micron), discern big relatively silica dioxide granule 1 (suitable) easily with the label 1 in Fig. 1.Label 3 expressions have the zone (suitable with the label 3 in Fig. 1) of young waiter in a wineshop or an inn's cilicon oxide filler particle and epoxy matrix.The zone of being pointed out by arrow IV is included among Fig. 3 in addition.Described area I V is the feature of label 3 and will be illustrated by Fig. 4.
About producing the composition that this polymer concrete needs, with reference to the example of discussing in detail after a while 5.The cylinder of pushing mixture by comprising fast steering spiral mixing arrangement causes case of bending modulus of shearing (Young's modulus) in about scope of 20 to about 30GPa and about 30 to about 40GPa compressive state Young's modulus with the step that produces final mixture.
The feature of area I V shown in Figure 4 proof zone 3 comprise a large amount of relatively little filler particles 7 in the 0.004mm diameter range be in larger particles 8 in the 0.016mm diameter range and the particle in the scope of 0.06mm diameter 9 around.The high shear force that puts on mixture during blend step causes the even distribution of particle.During this step, mixture is urged by the cylinder that comprises continuous fast steering spiral mixing arrangement so that produce final mixture and the film degasification unit that causes the material with low-down void content.The dark-coloured part 10 expression epoxy matrixes of Fig. 4.
Fig. 5 schematically illustrates the Fuller sieve-analysis curve.It is as follows that the Fuller sieve-analysis curve of Fig. 5 is described the ratio of filler of the concrete different size that is used to obtain closely knit filling:
D is a particle size, and D is a maximum particle size, and it is 300 μ m according to Fig. 5, and P is the ratio that is less than or equal to the particle of d, and n is a gradation factor.For circular granular, n is set to 0.5 usually, and the particle n for crushing is set to 0.37 (Fuller W.B., Thompson S.E., The laws of proportioning concrete, Transactions of the American Society of Civil Engineers, opinion code 1053,1907, pp67-143).600EST, W12 EST are the different fillers with variable grain ratio with Sihelco 30.
The Fuller sieve-analysis curve is described the optimization filler composite materials of mixture, and it provides the optimization characteristics of mixture, for example the intensity of the optimization of mixture and porosity or cavity etc.
Fig. 6 A illustrates and is used for making or the flow chart of the method 100 of the electrical insulator of high-tension apparatus, it comprises step: all liq component of the insulating material of pushing electrical insulator is by static mixer 101, add at least one filler and give this component 102, thereby push the final mixture 103 that this component and this at least one filler are mixed into this component and this at least one filler by the pipeline that comprises fast steering spiral mixing arrangement insulating material, the outlet (flow type be connected to mould) of this final mixture by this mixing arrangement guided to mould 104a, form electrical insulator 105 by partly solidified at least this final mixture, this electrical insulator 106 of molding, by removal unit with this final mixture degasification 107, and outside mould at least in part the back solidify this final mixture 108.
Fig. 6 B illustrates and is used for making or the flow chart of the method 100 of the electrical insulator of high-tension apparatus, it comprises step: all liq component of the insulating material of pushing electrical insulator is by static mixer 101, add at least one filler and give this component 102, thereby push the final mixture 103 that this component and this at least one filler are mixed into this component and this at least one filler by the pipeline that comprises fast steering spiral mixing arrangement insulating material, this final mixture is guided to the mould that is used for vacuum pressing and casting, and (this mould is positioned at vacuum chamber, the inlet of this vacuum chamber is connected to the outlet of mixing arrangement, its flow type is connected to mould) 104b, form electrical insulator 105 by partly solidified at least this final mixture, cast this electrical insulator 106, by removal unit with this final mixture degasification 107, and outside mould at least in part the back solidify this final mixture 108.
Be used to carry out mode of the present invention
Open and the argumentation by example hereinafter of some modes of the possible embodiment of property method of the present invention.
Example 1 (aromatic epoxies constituent (aromatic epoxy composition))
Epoxy resin component is with making as the component that provides in form 1.This component is mixed with different mixing arrangement (2 different production specification turbomixers and production specification continuous helical blender).The record incorporation time, and cast the thick square plate of about 4mm (150 * 150mm), solidified about 8 hours and after about 140 ℃, solidified about 4 hours at about 80 ℃.The sample that is used for mechanical test goes out with machining and according to the standard testing that provides at form 2 from these plates.Each character of listing of five samples of test.
The production specification turbomixer comprises be equipped with impeller two separately mixers (being used for epoxy resin and acid anhydride curing agent).In these containers, filler disperses to enter resin and curing agent respectively.These two components are urged thereafter passes through static mixer.
In the continuous helical blender, the epoxy constituent prepares by the volume dose of liquid component by static mixer.Add thereafter filler and by the pushing all components disperse by the cylinder pipe (wherein also comprising the film degasification unit) that is equipped with the fast steering spiral.
The raw material formulation of form 1 aromatic epoxies constituent (prescription adopts phr (umbers of per hundred parts of epoxy resin) to provide)
| Type | Trade name | The producer | phr |
| Epoxy resin | Epikote?EPR845 | Hexion(DE) | 100 |
| The acid anhydride curing agent | Epikure?EPH05389 | Hexion(DE) | 84 |
| Silica filler | W12 | Quarzwerke(DE) | 320 |
Relatively turbomixer A and B observe turbomixer A after approximately 240min mixes, and compare after about 480min mixes with turbomixer B, produce better result.For turbomixer B, observe the small increase of engineering properties with incorporation time.
As seeing in form 2, the continuous helical blender is compared with two turbomixers and is caused engineering properties preferably.Even with the very long incorporation time of about 480min, can not reach the engineering properties of continuous helical blender.Engineering properties is the function of the dispersion of filler in basis material, itself so that depend on mixing efficiency.This mixing efficiency depends on incorporation time and mixes both how much.The continuous helical blender is compared the very high shearing force of formation with turbomixer, even and therefore the very short incorporation time in about 1 minute scope also cause good dispersion.
The mechanical test result of the aromatic epoxies that the different mixing arrangements of form 2 usefulness are handled
Example 2 to 4 (cycloaliphatic epoxy that insulator usefulness is filled and the manufacturing of polymer concrete)
The component manufacturing that epoxy resin component (form 3) is used as provided in form 4.
The epoxy constituent prepares by the volume dose of liquid component by static mixer.Add thereafter filler and by the pushing all components disperse by the cylinder pipe (wherein also comprising the film degasification unit) that comprises the fast steering spiral.Material typically is lower than 1 minute the quiescent time in spiral in several minutes scope.The outlet of mixing duct is directly connected to the heated punching block that is installed on the hot press by flexible pipe.This punching block is used for pressing the outdoor insulation body.Mould on hot press is in 125 ℃ temperature.After injecting and solidifying in other two hours, with this parts demoulding.
| Prescription | Example 2 | Example 3 | Example 4 |
| Araldite? |
100 | 100 | 100 |
| Aradur?HY1235 | 90 | 90 | 90 |
| DY062 | 0.54 | 0.54 | 0.54 |
| Silbond?W12EST | 354 | 354 | 354 |
| Sihelco?30 | 576 | 726 | |
| Filer content (wt.%) | 65 | 83 | 85 |
The raw material of form 4 cycloaliphatic epoxy constituents
| Type | Trade name | The producer |
| The cycloaliphatic epoxy resin | Araldite?CY184 | Huntsman?Advanced?Materials(CH) |
| The acid anhydride curing agent | Aradur?HY1235 | Huntsman?Advanced?Materials(CH) |
| Accelerator | DY062 | Huntsman?Advanced?Materials(CH) |
| Silica flour | Silbond?W12EST | Quarzwerke(DE) |
| Silica sand | Sihelco?30 | Sihelco(CH) |
Example 5 (the even mixing of highly-filled polymer concrete)
The component manufacturing that polymer concrete constituent (form 5) is used as provided in form 6.Four silica fillers of different size are followed the Fuller sieve-analysis curve and are selected to fill to obtain closely knit filler.This causes improved engineering properties, the precipitation risk that reduces, the material cost that reduces and the thermal conductivity of increase.
The fillers dispersed of two process for dispersing of this example assessment: the continuous helical blender of laboratory scale turbomixer and production specification.For the laboratory scale turbomixer, blending ingredients is up to obtaining homogeneous mixture (typically 30-60min).This mixing is thereafter in the 5mbar degasification and providing in the board mold of 6mm slab and cast.This plate solidified 2 hours and solidified 10 hours at 140 ℃ at 90 ℃.The mixed process of continuous helical blender is described in example 2-4.The small sample slave plate downcuts and prepares microscopic examination.Sample characterizes with optics and scanning electron microscopy.
| Prescription | Example 5 |
| Araldite? |
100 |
| Aradur?HY1102 | 90 |
| DY070 | 0.3 |
| Silbond?600EST | 66 |
| Silbond?W12EST | 131 |
| Millisil?W3 | 312 |
| Sihelco?30 | 569 |
| Filer content (wt.%) | 65 |
The raw material of form 6 cycloaliphatic epoxy constituents
| Type | Trade name | The producer |
| The cycloaliphatic epoxy resin | Araldite?CY184 | Huntsman?Advanced?Materials(CH) |
| The acid anhydride curing agent | Aradur?HY1135 | Huntsman?Advanced?Materials(CH) |
| Accelerator | DY070 | Huntsman?Advanced?Materials(CH) |
| Silica flour | Millisil?W3 | Quarzwerke(DE) |
| Silica flour | Silbond?W12EST | Quarzwerke(DE) |
| Silica flour | 600EST | Quarzwerke(DE) |
| Silica sand | Sihelco?30 | Sihelco(CH) |
Claims (13)
1. one kind is used for making or the method (100) of the electrical insulator of high-tension apparatus, and described method (100) comprises step:
The all liq component that pushes the insulating material of described electrical insulator is passed through static mixer (101);
Add at least one filler and give described component (102);
Thereby push the final mixture (103) that described component and described at least one filler are mixed into described component and described at least one filler by the pipeline that comprises fast steering spiral mixing arrangement described insulating material;
The outlets direct of described mixing arrangement that described final mixture is connected to mould by flow type is to mould (104a);
Form electrical insulator (105) by partly solidified at least described final mixture; And
The described electrical insulator of molding (106).
2. one kind is used for making or the method (100) of the electrical insulator of high-tension apparatus, and described method (100) comprises step:
The all liq component that pushes the insulating material of described electrical insulator is passed through static mixer (101);
Add at least one filler and give described component (102);
Thereby push the final mixture (103) that described component and described at least one filler are mixed into described component and described at least one filler by the pipeline that comprises fast steering spiral mixing arrangement described insulating material;
Described final mixture is guided to the mould that is used for vacuum pressing and casting, and described mould is arranged in vacuum chamber, and the inlet of described vacuum chamber is connected to the outlet of described mixing arrangement, and its flow type is connected to described mould (104b);
Form electrical insulator (105) by partly solidified at least described final mixture; And
The described electrical insulator of molding (106).
3. the method for claim 1 (100), wherein said mould is the part of vacuum chamber.
4. method as claimed in claim 1 or 2 (100) further comprises step:
By removal unit with described final mixture degasification (107);
Wherein said fast steering spiral mixing arrangement comprises this removal unit.
5. method as claimed in claim 1 or 2 (100), wherein said curing is at least partially in carrying out in the described mould.
6. method as claimed in claim 1 or 2 (100), wherein said completion of cure is carried out in mould.
7. as each described method (100) in the claim 1 to 6, further comprise step:
Outside described mould, at least in part, preferably in forced convection oven, afterwards solidify described final mixture (108).
8. as each described method (100) in the claim 1 to 7, wherein at least two fillers add described component to; And
The mixed proportion of the filler of wherein said insulating material is followed the Fuller sieve-analysis curve, and it has Fuller and distributes:
Wherein d is the particle size of described filler, and D is a maximum particle size, and P is the ratio that is less than or equal to the particle of d, and n is a gradation factor.
9. as each described method (100) in the claim 1 to 8, comprise that fast steering spiral mixing arrangement is mixed into described component and described at least one filler that final mixture obtains in about scope of 2 to about 40GPa, the case of bending Young's modulus in about scope of 10 to about 30GPa preferably thereby wherein push the step of described mixture by described pipeline.
10. as each described method (100) in the claim 1 to 9, the volume of wherein said at least two fillers constitute described electrical insulator insulating material volume at least 49%.
11. as each described method (100) in the claim 8 to 10, the ratio of wherein said filler is determined according to 0.5 gradation factor n.
12. as each described method (100) in the claim 8 to 10, the ratio of wherein said filler is determined according to 0.37 gradation factor n.
Be used for or the electrical insulator of high-tension apparatus 13. each described method (100) is made in basis such as the claim 1 to 12.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP10157948.0A EP2372725B1 (en) | 2010-03-26 | 2010-03-26 | Production of electrical insulation and insulated products |
| EP10157948.0 | 2010-03-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102254648A true CN102254648A (en) | 2011-11-23 |
| CN102254648B CN102254648B (en) | 2013-08-14 |
Family
ID=42937207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110084796XA Active CN102254648B (en) | 2010-03-26 | 2011-03-24 | Production of electrical insulation and insulated products |
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| KR (1) | KR101252593B1 (en) |
| CN (1) | CN102254648B (en) |
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| CN109256245A (en) * | 2017-07-14 | 2019-01-22 | 泰科电子(上海)有限公司 | Insulator and its manufacturing method |
| JP7308799B2 (en) * | 2020-08-31 | 2023-07-14 | 東芝三菱電機産業システム株式会社 | Resin manufacturing method and insulating structure manufacturing method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1479927A (en) * | 2000-12-06 | 2004-03-03 | 皮雷利有限公司 | Process for producing cable with recyclable coating |
| CN101189686A (en) * | 2005-05-04 | 2008-05-28 | Abb研究有限公司 | Electric insulation material, an electric device and a method for producing an electric insulation material |
| WO2009043376A1 (en) * | 2007-10-03 | 2009-04-09 | Abb Research Ltd | Electrical insulation system with improved electrical breakdown strength |
| WO2010031445A1 (en) * | 2008-09-19 | 2010-03-25 | Abb Research Ltd | Epoxy resin composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2002047092A1 (en) * | 2000-12-06 | 2002-06-13 | Pirelli S.P.A. | Process for producing a cable with a recyclable coating |
| DE10208644A1 (en) * | 2002-02-28 | 2003-09-11 | Bakelite Ag | Process for the production and processing of epoxy resin molding compounds |
| ATE355318T1 (en) * | 2003-06-16 | 2006-03-15 | Abb Technology Ltd | EPOXY RESIN COMPOSITIONS AND METHODS FOR PRODUCING MOLDED ARTICLES THEREFROM |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1479927A (en) * | 2000-12-06 | 2004-03-03 | 皮雷利有限公司 | Process for producing cable with recyclable coating |
| CN101189686A (en) * | 2005-05-04 | 2008-05-28 | Abb研究有限公司 | Electric insulation material, an electric device and a method for producing an electric insulation material |
| WO2009043376A1 (en) * | 2007-10-03 | 2009-04-09 | Abb Research Ltd | Electrical insulation system with improved electrical breakdown strength |
| WO2010031445A1 (en) * | 2008-09-19 | 2010-03-25 | Abb Research Ltd | Epoxy resin composition |
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| Publication number | Publication date |
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| EP2372725B1 (en) | 2013-09-11 |
| KR101252593B1 (en) | 2013-04-10 |
| KR20110108279A (en) | 2011-10-05 |
| CN102254648B (en) | 2013-08-14 |
| EP2372725A1 (en) | 2011-10-05 |
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