CN109369874A - A kind of urethane composition and the saturable reactor using it - Google Patents

A kind of urethane composition and the saturable reactor using it Download PDF

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Publication number
CN109369874A
CN109369874A CN201811063595.XA CN201811063595A CN109369874A CN 109369874 A CN109369874 A CN 109369874A CN 201811063595 A CN201811063595 A CN 201811063595A CN 109369874 A CN109369874 A CN 109369874A
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China
Prior art keywords
inorganic filler
urethane composition
parts
saturable reactor
iron core
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CN201811063595.XA
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CN109369874B (en
Inventor
张翀
杨威
史晓宁
陈赟
张卓
陈新
李维康
肖雨
尹立
颜丙越
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State Grid Jiangsu Electric Power Co Ltd
Global Energy Interconnection Research Institute
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State Grid Jiangsu Electric Power Co Ltd
Global Energy Interconnection Research Institute
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
    • C08K13/02—Organic and inorganic ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/28—Nitrogen-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/05—Alcohols; Metal alcoholates
    • C08K5/053—Polyhydroxylic alcohols
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04—Polyurethanes
    • C09J175/08—Polyurethanes from polyethers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/22—Cooling by heat conduction through solid or powdered fillings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2217—Oxides; Hydroxides of metals of magnesium
    • C08K2003/222—Magnesia, i.e. magnesium oxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/28—Nitrogen-containing compounds
    • C08K2003/282—Binary compounds of nitrogen with aluminium
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/003—Additives being defined by their diameter

Abstract

The present invention relates to a kind of urethane composition and use its saturable reactor, wherein, the urethane composition, in parts by weight, its raw material includes, 100-120 parts of methyl diphenylene diisocyanate, 20-30 parts of polyether polyol, 0.5-1 parts of catalyst, 0.5-2 parts of fire retardant, 150-350 parts of inorganic filler, the inorganic filler includes little particle inorganic filler of bulky grain inorganic filler and partial size D50 of the partial size D50 between 30-50 μm between 10-15 μm, urethane composition obtained has good insulating properties and Mechanics of Machinery characteristic, it is used cooperatively by urethane composition obtained and existing high-thermal-conductivity epoxy resin and saturable reactor is prepared, urethane composition and high-thermal-conductivity epoxy resin can play synergistic effect, it mentions The iron core running temperature of saturable reactor is greatly reduced in the heat conduction efficiency of high saturable reactor.

Description

A kind of urethane composition and the saturable reactor using it
Technical field
The present invention relates to electric elements technical fields, and in particular to a kind of urethane composition and the saturation reactance using it Device.
Background technique
DC converter valve is the critical component of super extra-high voltage direct-current transmission engineering thyristor valves with saturable reactor, can For reducing the surge current climbing of converter valve, inhibit the converter valve voltage build-up rate under thunder and lightning, abrupt slope, and rise to converter valve It is acted on to pressure, plays the purpose of protection converter valve.
For example, Chinese patent literature CN105070476A discloses a kind of Anode saturable reactor of DC converter valve, packet It includes: shell, one group of coil, at least a pair of of iron core and iron core radiator；Each iron core includes the first core portion and the second iron core Part, first core portion and second core portion are upper and lower U-shaped structure or left and right c-type structure；At least a pair of of iron core at It is coupled to closing is formed between the inside and outside wall for snapping onto one group of coil；Circumferential setting of at least a pair of of iron core along one group of coil；Iron Core radiator is arranged in the inner wall of one group of coil, contacts at least a pair of of iron core, and iron core radiator exposes in air, and It is docked with shell.
In recent years, with electrical, electronic equipment high-power and integrated, current density increases, heat dissipation and insulation It is required that increasing therewith, the converter valve loss of especially DC transmission engineering is increasing, as DC current is higher and higher, satisfies Become larger with the core loss of reactor, fever is serious, and long-term overheat accelerated ageing shortens the working life, electronic component is caused to lose Effect reduces iron core temperature, to reduce the iron of saturable reactor this requires further increasing the heat-sinking capability of saturable reactor Core loss.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that overcome in the prior art saturable reactor heat-sinking capability it is poor, iron Core loss is bigger than normal, iron core heating it is excessively high and the problem of reduce saturable reactor service life and safety in utilization, to provide one Kind urethane composition and the saturable reactor for using it.
For this purpose, the technical solution that the application takes are as follows:
The present invention provides a kind of urethane composition, and in parts by weight, raw material includes methyl diphenylene diisocyanate 100-120 parts, 20-30 parts of polyether polyol, 0.5-1 parts of catalyst, 0.5-2 parts of fire retardant, 150-350 parts of inorganic filler, institute Stating inorganic filler includes that bulky grain inorganic filler and partial size D50 of the partial size D50 between 30-50 μm are small between 10-15 μm Particulate inorganic filler.
The mass ratio of the bulky grain inorganic filler and little particle inorganic filler is 1:(1.0-1.3).
The inorganic filler is aluminium oxide, silica, magnesia, aluminium nitride, a kind of in silicon nitride or at least two Mixture.
The present invention also provides a kind of preparation methods of above-mentioned urethane composition, include the following steps:
It (1) is 40-60 DEG C in temperature, under conditions of vacuum degree is 150-200Pa, by polyether polyol, fire retardant, catalysis Agent and the inorganic filler of the total dosage 50-70wt% of inorganic filler are uniformly mixed, and mixture is made；
It (2) is 30-50 DEG C in temperature, under conditions of vacuum degree is 200-300Pa, into mixture made from step (1), Methyl diphenylene diisocyanate is added and remaining inorganic filler is uniformly mixed, urethane composition is made.
The present invention provides application of the urethane composition as saturable reactor casting glue.
The present invention provides a kind of saturable reactor, two including coil, shell and the upper and lower side pairing in the coil Iron core, in the gap between the iron ring and iron core and between iron core and shell encapsulating have the urethane composition so that Iron core, coil and shell casting are together.
The loss value of described two iron cores is different.
In described two iron cores, the loss value of an iron core is 700-800W, and the loss value of another iron core is 500-600W.
The coil ecto-entad is successively enclosed with semi-conductive layer and stress-buffer layer, and the stress-buffer layer is knitted by glass Perhaps polyester textile is entwined the surface density of the Woven glass cloth or polyester textile as 160-200g/m to object2, the glass The yams of fabric are 100-200TEX, and the yams of the polyester textile are 300-600D.
Technical solution of the present invention has the advantages that
1, the present invention provides a kind of urethane compositions, by the way that inorganic fill out is added in the raw material of urethane composition Material, and the particle size of particle in inorganic filler is controlled, make wherein to include D50 value between 10-15 μm and D50 value is in 30-50 μ The particle of two kinds of particle size ranges between m, can significantly improve the thermal conductivity of urethane composition, so that urethane composition Thermal coefficient is improved by 0.1W/m.k to 1.3-1.5W/m.k, and high urethane composition obtained has good insulating properties With Mechanics of Machinery characteristic, ensure that while the insulation performance and Mechanics of Machinery characteristic for not influencing urethane composition have compared with High thermal conductivity, so that iron core and polyurethane composition in saturable reactor can not only be reduced when being applied to saturable reactor Interfacial resistance between object improves heat conduction efficiency, reduces iron core temperature, improves iron core fever phenomenon, and can be improved full With the insulating properties of reactor, Mechanics of Machinery characteristic improves the service life of saturable reactor.
2, the present invention provides a kind of saturable reactor, by by urethane composition and existing high-thermal-conductivity epoxy resin It is used cooperatively, synergistic effect can be played, increase substantially heat conduction efficiency, and pass through low loss ferrite and high damage Consumption iron core is used cooperatively, and can not only be reduced iron core temperature from source, be improved iron core heating problem, and improve low because using Current oscillation mistake when the poor damping and biggish reverse current peak value of iron core bring is lost, and then avoiding transient operating mode Zero to cause thyristor accidentally to turn off, in addition, through the loss value of the high loss iron core of control between 700-800W, low-loss iron The loss value of core, will not be due to the loss value of two iron cores difference be too big to the stability of saturable reactor between 500-600W It is had an impact with reliability.
3, the present invention provides a kind of saturable reactors, by being successively enclosed with semi-conductive layer in the coil ecto-entad And stress-buffer layer, and be wound stress slow release layer by using Woven glass cloth or polyester textile, can uniform electric field, Improve the interface cohesion of glass and epoxy resin；Wherein, the surface density of the Woven glass cloth or polyester textile is 160-200g/ m2, the yams of the Woven glass cloth are 100-200TEX, and the yams of the polyester textile are 300-600D, so that institute Stating has good interface cohesion between Loop fibers fabric and epoxy insulation layer, the partial discharge for effectively reducing coil is horizontal.
Specific embodiment
Embodiment 1
(1) in the present embodiment urethane composition preparation process, include the following steps:
The inorganic filler for taking the polyether polyol of 20g, the fire retardant of 2g, the catalyst of 0.5g and 120g is 45 in temperature DEG C, vacuum degree is uniformly mixed under conditions of being 150Pa, and the methyl diphenylene diisocyanate of 100g and the nothing of 80g is then added Machine filler is 35 DEG C in temperature, and vacuum degree is uniformly mixed under conditions of being 300Pa, and urethane composition is made；Wherein, described Inorganic filler is aluminium oxide, wherein inorganic filler include the ratio between parts by weight be 1:1.1 partial size D50 value between 45.73 μm Alumina particle between 10.25 μm of alumina particle and partial size D50 value, fire retardant is dibromoneopentyl glycol, catalyst For 11 carbon -7- alkene of 1,8- diazacyclo (5.4.0).
(2) in the present embodiment saturable reactor moulding process, include the following steps:
(1) winding and pretreatment of coil line group: aluminium is turned into crepe cord astragal group, is successively twined on the outside of coil line group Around stress-buffer layer and semi-conductive layer；Busbar and water nozzle are welded in the coil line group, and are fitted into coil and are poured into mold Preheating, preheating temperature are 100 DEG C, preheating time 4.5h；
(2) pretreatment, casting and solidification of epoxy resin: preheating 5h at being 100 DEG C in temperature by the epoxy resin of 100g, Amine type accelerator by the acid anhydride type curing agent of 100g, 2g preheats 4h at being 70 DEG C in temperature；It is uniformly mixed, obtains epoxy resin Composition；Then composition epoxy resin is placed in vacuum degree is 300Pa, temperature is to preheat 1.5h at 70 DEG C, then same It is poured into the coil line group of step (1) preheating in condition with composition epoxy resin, duration of pouring 0.5h；Then at 75 DEG C Lower solidification 3h, then be warming up to 85 DEG C of solidification 4.5h, then be warming up at 95 DEG C and solidify 4.5h, after demoulding, then be warming up at 120 DEG C into Row secondary curing, curing time 12h form epoxy resin pouring coil；
(3) iron core assembly and shell encapsulation: will be on two iron core assemblies to above-mentioned epoxy resin pouring coil, wherein One iron core is high loss iron core of the loss value in 731W, another described iron core is low-loss iron of the loss value in 502W Core, the iron core are suppressed by ultra-thin silicon steel sheet, and the coil for assembling iron core is packed into glass fibre reinforced plastics casing；
(4) encapsulation of elastomer: and then the epoxy resin pouring coil that step (3) is fitted into shell is placed in mold, Preheat 1h in the case where temperature is 30 DEG C, vacuum degree is 0.5MPa, then urethane composition obtained above, temperature be 28 DEG C, Vacuum degree is under 0.3MPa, then vacuum pouring 1h solidifies 3 hours at 50 DEG C.
Embodiment 2
(1) in the present embodiment urethane composition preparation process, include the following steps:
The inorganic filler for taking the polyether polyol of 30g, the fire retardant of 0.5g, the catalyst of 0.8g and 75g is 60 in temperature DEG C, vacuum degree is uniformly mixed under conditions of being 200Pa, and the methyl diphenylene diisocyanate of 100g and the nothing of 75g is then added Machine filler is 50 DEG C in temperature, and vacuum degree is uniformly mixed under conditions of being 200Pa, and urethane composition is made；Wherein, described Inorganic filler includes the bulky grain inorganic filler and partial size D50 that the partial size D50 value that the ratio between parts by weight are 1:1.3 is 31.45 μm The little particle inorganic filler that value is 14.97 μm, fire retardant is dibromoneopentyl glycol, catalyst 1,8- diazacyclo (5.4.0) 11 carbon -7- alkene, inorganic filler is aluminium oxide.
(2) in the present embodiment saturable reactor moulding process, with differing only in for the moulding process of embodiment 1: this The high loss iron core for a use of loss value being 794W in embodiment, another loss value is replaced real by the low loss ferrite of 556W Two in example 1 iron cores are applied to be assembled；And use urethane composition generation obtained in the present embodiment preparation process (one) It is poured for the urethane composition in embodiment 1.
Embodiment 3
(1) in the present embodiment urethane composition preparation process, include the following steps:
The inorganic filler for taking the polyether polyol of 25g, the fire retardant of 1.2g, the catalyst of 1g and 120g is 55 in temperature DEG C, vacuum degree is uniformly mixed under conditions of being 150Pa, and the methyl diphenylene diisocyanate of 110g and the nothing of 80g is then added Machine filler is 30 DEG C in temperature, and vacuum degree is uniformly mixed under conditions of being 250Pa, and urethane composition is made；Wherein, described Inorganic filler includes that the partial size D50 value that the ratio between parts by weight are 1:1.3 is bulky grain inorganic filler and partial size between 40.56 μm The little particle inorganic filler that D50 value is 10.49 μm, fire retardant is dibromoneopentyl glycol, catalyst 1,8- diazacyclo (5.4.0) 11 carbon -7- alkene, inorganic filler is aluminium oxide.
(2) in the present embodiment saturable reactor moulding process, with differing only in for the moulding process of embodiment 1: this The high loss iron core for a use of loss value being 767W in embodiment, another loss value is replaced real by the low loss ferrite of 589W Two in example 1 iron cores are applied to be assembled；And it is replaced using urethane composition made from the present embodiment preparation process (one) Urethane composition in embodiment 1 is poured.
Embodiment 4
(1) in the present embodiment urethane composition preparation process, include the following steps:
The inorganic filler for taking the polyether polyol of 20g, the fire retardant of 1.2g, the catalyst of 1g and 165g is 40 in temperature DEG C, vacuum degree is uniformly mixed under conditions of being 175Pa, and the methyl diphenylene diisocyanate of 120g and the nothing of 165g is then added Machine filler is 30 DEG C in temperature, and vacuum degree is uniformly mixed under conditions of being 250Pa, and urethane composition is made；Wherein, described Inorganic filler includes the bulky grain inorganic filler and partial size D50 that the partial size D50 value that the ratio between parts by weight are 1:1.1 is 34.78 μm The little particle inorganic filler that value is 10.15 μm, fire retardant is dibromoneopentyl glycol, catalyst 1,8- diazacyclo (5.4.0) 11 carbon -7- alkene, inorganic filler is aluminium oxide.
(2) in the present embodiment saturable reactor moulding process, with differing only in for the moulding process of embodiment 1: this Two iron cores in embodiment 1 are replaced to be assembled using the low loss ferrite that two loss values are 507W in embodiment；And And the urethane composition in embodiment 1 is replaced to pour using urethane composition made from the present embodiment preparation process (one) Note.
Embodiment 5
(1) in the present embodiment urethane composition preparation process, include the following steps:
The inorganic filler for taking the polyether polyol of 25g, the fire retardant of 0.5g, the catalyst of 0.8g and 75g is 60 in temperature DEG C, vacuum degree is uniformly mixed under conditions of being 150Pa, and the methyl diphenylene diisocyanate of 100g and the nothing of 75g is then added Machine filler is 50 DEG C in temperature, and vacuum degree is uniformly mixed under conditions of being 200Pa, and urethane composition is made；Wherein, described Inorganic filler includes the bulky grain inorganic filler and partial size D50 that the partial size D50 value that the ratio between parts by weight are 1:1.2 is 50.01 μm The little particle inorganic filler that value is 13.24 μm, fire retardant is dibromoneopentyl glycol, catalyst 1,8- diazacyclo (5.4.0) 11 carbon -7- alkene, inorganic filler is aluminium oxide.
(2) in the present embodiment saturable reactor moulding process, with differing only in for the moulding process of embodiment 1: this Two iron cores in embodiment 1 are replaced to be assembled using the high loss iron core that two loss values are 786W in embodiment；And And the urethane composition in embodiment 1 is replaced to pour using urethane composition made from the present embodiment preparation process (one) Note.
Embodiment 6
(1) in the present embodiment urethane composition preparation process, include the following steps:
The inorganic filler for taking the polyether polyol of 20g, the fire retardant of 0.5g, the catalyst of 0.8g and 175g is in temperature 50 DEG C, vacuum degree is uniformly mixed under conditions of being 200Pa, and the methyl diphenylene diisocyanate and 120g of 100g is then added Inorganic filler is 50 DEG C in temperature, and vacuum degree is uniformly mixed under conditions of being 200Pa, and urethane composition is made；Wherein, institute Stating inorganic filler is silica, and the inorganic filler includes that the partial size D50 value that the ratio between parts by weight are 1:1.2 is 29.54 μm The little particle silica that bulky grain silica and partial size D50 value are 12.79 μm, fire retardant is dibromoneopentyl glycol, and catalyst is 11 carbon -7- alkene of 1,8- diazacyclo (5.4.0).
Two, in the present embodiment saturable reactor moulding process, with differing only in for the moulding process of embodiment 1: this The high loss iron core for a use of loss value being 786W in embodiment, another loss value is replaced real by the low loss ferrite of 547W Two in example 1 iron cores are applied to be assembled；And it is replaced using urethane composition made from the present embodiment preparation process (one) Urethane composition in embodiment 1 is poured.
Comparative example 1
(1) in the present embodiment urethane composition preparation process, include the following steps:
The inorganic filler for taking the polyether polyol of 20g, the fire retardant of 2g, the catalyst of 0.5g and 120g is 45 in temperature DEG C, vacuum degree is uniformly mixed under conditions of being 150Pa, and the methyl diphenylene diisocyanate of 100g and the nothing of 80g is then added Machine filler is 35 DEG C in temperature, and vacuum degree is uniformly mixed under conditions of being 300Pa, and urethane composition is made；Wherein, fire-retardant Agent is dibromoneopentyl glycol, and catalyst 1,11 carbon -7- alkene of 8- diazacyclo (5.4.0), inorganic filler is aluminium oxide.
(2) in the present embodiment saturable reactor moulding process, with differing only in for the moulding process of embodiment 1: making The urethane composition made from the present embodiment preparation process (one) replaces the urethane composition in embodiment 1 to be poured.
Comparative example 2
(1) in the present embodiment urethane composition preparation process, include the following steps:
The inorganic filler for taking the polyether polyol of 20g, the fire retardant of 2g, the catalyst of 0.5g and 120g is 45 in temperature DEG C, vacuum degree is uniformly mixed under conditions of being 150Pa, and the methyl diphenylene diisocyanate of 100g and the nothing of 80g is then added Machine filler is 35 DEG C in temperature, and vacuum degree is uniformly mixed under conditions of being 300Pa, and urethane composition is made；Wherein, described Inorganic filler is aluminium oxide, and aluminium oxide is nano-scale inorganic filler of the partial size D50 value at 0.12 μm, and fire retardant is dibromo new penta 2 Alcohol, catalyst 1,11 carbon -7- alkene of 8- diazacyclo (5.4.0), inorganic filler is aluminium oxide.
(2) in the present embodiment saturable reactor moulding process, with differing only in for the moulding process of embodiment 1: this Embodiment replaces the urethane composition in embodiment 1 to be poured using urethane composition made from preparation process (one).
Comparative example 3
(1) in the present embodiment urethane composition preparation process, include the following steps:
The inorganic filler for taking the polyether polyol of 20g, the fire retardant of 2g, the catalyst of 0.5g and 120g is 45 in temperature DEG C, vacuum degree is uniformly mixed under conditions of being 150Pa, and the methyl diphenylene diisocyanate of 100g and the nothing of 80g is then added Machine filler is 35 DEG C in temperature, and vacuum degree is uniformly mixed under conditions of being 300Pa, and urethane composition is made；Wherein, described Inorganic filler is bulky grain inorganic filler of the partial size D50 value between 30-50 μm, and fire retardant is dibromoneopentyl glycol, catalyst For 1,8- diazacyclo (5.4.0), 11 carbon -7- alkene, inorganic filler is aluminium oxide.
(2) in the present embodiment saturable reactor moulding process, with differing only in for the moulding process of embodiment 1: this Embodiment replaces the urethane composition in embodiment 1 to be poured using urethane composition made from preparation process (one).
Evaluation
The embodiment 1-6 and comparative example 1-3 urethane composition prepared and saturable reactor are tested for the property, as a result As shown in Tables 1 and 2.
The performance test table of urethane composition made from table 1 embodiment 1-6 and comparative example 1-3
The performance test table of saturable reactor made from table 2 embodiment 1-6 and comparative example 1-3
As shown in Table 1, in embodiment 1-6 urethane composition obtained thermal conductivity, insulating properties, mechanical property compared to Comparative example 1-3 is obviously improved, wherein thermal coefficient maintains the higher level of 1.3-1.5W/ (m.K), dielectric loss dimension The reduced levels between 0.006-0.008 are held, for dielectric constant in the range of 4.8-5.7, volume resistivity is maintaining 1016 The higher level of Ω .cm, tensile strength is between 4.6-5.9MPa.In addition, although comparative example 2 uses nano-scale inorganic filler oxygen The thermal conductivity of urethane composition can also be improved to a certain extent by changing aluminium, but since its dielectric constant is lower, dielectric It is lost larger, is substantially reduced its insulating properties；And the breakdown strength of its urethane composition obtained is relatively low.
As shown in Table 2, saturable reactor obtained in embodiment 1-6 can not only reduce full compared to comparative example 1-3 And the interfacial resistance in reactor between iron core and urethane composition, promote heat to pass to outward, reduce iron core temperature, improves Iron core fever phenomenon, and can be improved the insulating properties of saturable reactor, Mechanics of Machinery characteristic improves the use of saturable reactor Service life.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or It changes still within the protection scope of the invention.

Claims (9)

1. a kind of urethane composition, in parts by weight, raw material includes,
100-120 parts of methyl diphenylene diisocyanate,
20-30 parts of polyether polyol,
0.5-1 parts of catalyst,
0.5-2 parts of fire retardant,
150-350 parts of inorganic filler, the inorganic filler include bulky grain inorganic filler of the partial size D50 between 30-50 μm and Little particle inorganic filler of the partial size D50 between 10-15 μm.
2. poly- ammonia elastomer according to claim 1, which is characterized in that the bulky grain inorganic filler and little particle are inorganic The mass ratio of filler is 1:(1.0-1.3).
3. urethane composition according to claim 1 or 2, which is characterized in that the inorganic filler is aluminium oxide, oxygen SiClx, magnesia, aluminium nitride, it is a kind of in silicon nitride or at least two mixture.
4. a kind of preparation method of urethane composition of any of claims 1-3, which is characterized in that including as follows Step:
(1) temperature be 40-60 DEG C, vacuum degree be 150-200Pa under conditions of, by polyether polyol, fire retardant, catalyst and The inorganic filler of the total dosage 50-70wt% of inorganic filler is uniformly mixed, and mixture is made；
(2) it is 30-50 DEG C in temperature, under conditions of vacuum degree is 200-300Pa, into mixture made from step (1), is added Methyl diphenylene diisocyanate and remaining inorganic filler are uniformly mixed, and urethane composition is made.
5. application of the urethane composition of any of claims 1-3 as saturable reactor casting glue.
6. a kind of saturable reactor, two iron cores including coil, shell and the upper and lower side pairing in the coil, feature exist In encapsulating has the right to require described in any one of 1-3 in the gap between the iron ring and iron core and between iron core and shell Urethane composition so that iron core, coil and shell casting together.
7. saturable reactor according to claim 6, which is characterized in that the loss value of described two iron cores is different.
8. saturable reactor according to claim 6 or 7, which is characterized in that in described two iron cores, the loss of an iron core Value is 700-800W, and the loss value of another iron core is 500-600W.
9. saturable reactor a method according to any one of claims 6-8, which is characterized in that the coil ecto-entad is successively It is enclosed with semi-conductive layer and stress-buffer layer, the stress-buffer layer is entwined by Woven glass cloth or polyester textile, described The surface density of Woven glass cloth or polyester textile is 160-200g/m2, the yams of the Woven glass cloth are 100-200TEX, The yams of the polyester textile are 300-600D.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110128992A (en) * 2019-05-17 2019-08-16 陈定方 A kind of polyurethane pouring sealant that can effectively improve heat transfer efficiency and preparation method
CN115678479A (en) * 2022-10-10 2023-02-03 无锡东润电子材料科技有限公司 Low-dielectric-loss polyurethane packaging material for capacitor and preparation method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030211328A1 (en) * 1999-12-08 2003-11-13 Fujitsu Limited Halogen-free, flame-retardant insulating epoxy resin composition and circuit board comprising insulation layer formed thereof
CN102942767A (en) * 2012-12-06 2013-02-27 及荣军 Insulation composition as well as insulation material, shed and insulator using same, and manufacturing method thereof
CN103408939A (en) * 2013-08-02 2013-11-27 昆山市中迪新材料技术有限公司 Insulation pad and preparation method thereof
CN104193947A (en) * 2014-08-15 2014-12-10 华南理工大学 Flame retardant heat conducting polyurethane composite material and preparation method thereof
CN105070476A (en) * 2015-08-21 2015-11-18 南京南瑞继保电气有限公司 Anode saturation reactor of direct-current converter valve

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030211328A1 (en) * 1999-12-08 2003-11-13 Fujitsu Limited Halogen-free, flame-retardant insulating epoxy resin composition and circuit board comprising insulation layer formed thereof
CN102942767A (en) * 2012-12-06 2013-02-27 及荣军 Insulation composition as well as insulation material, shed and insulator using same, and manufacturing method thereof
CN103408939A (en) * 2013-08-02 2013-11-27 昆山市中迪新材料技术有限公司 Insulation pad and preparation method thereof
CN104193947A (en) * 2014-08-15 2014-12-10 华南理工大学 Flame retardant heat conducting polyurethane composite material and preparation method thereof
CN105070476A (en) * 2015-08-21 2015-11-18 南京南瑞继保电气有限公司 Anode saturation reactor of direct-current converter valve

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110128992A (en) * 2019-05-17 2019-08-16 陈定方 A kind of polyurethane pouring sealant that can effectively improve heat transfer efficiency and preparation method
CN115678479A (en) * 2022-10-10 2023-02-03 无锡东润电子材料科技有限公司 Low-dielectric-loss polyurethane packaging material for capacitor and preparation method thereof
CN115678479B (en) * 2022-10-10 2023-12-08 无锡东润电子材料科技有限公司 Low dielectric loss polyurethane packaging material for capacitor and preparation method thereof

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