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A polyurethane composition and a saturable reactor using the same

A reactor, polyurethane technology, applied in the direction of polyurea/polyurethane adhesive, transformer/inductor cooling, electrical components, etc., can solve the problems of reducing the service life of saturated reactors, poor heat dissipation, and iron core heating, etc. The effect of improving the service life, high thermal conductivity, and reducing the temperature of the iron core

Active Publication Date: 2021-11-30
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problems in the prior art that the saturable reactor has poor heat dissipation capability, the core loss is too large, and the temperature rise of the iron core is too high to reduce the service life and safety of the saturated reactor, thereby providing a Polyurethane composition and saturable reactor using same

Method used

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  • A polyurethane composition and a saturable reactor using the same
  • A polyurethane composition and a saturable reactor using the same

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Embodiment 1

[0023] (1) The preparation technology of polyurethane composition in the present embodiment, comprises the following steps:

[0024] Take 20g of polyether polyols, 2g of flame retardants, 0.5g of catalysts and 120g of inorganic fillers, mix them uniformly at a temperature of 45°C and a vacuum of 150Pa, and then add 100g of diphenylmethane diisocyanate And the inorganic filler of 80g, be 35 ℃ in temperature, under the condition that vacuum degree is 300Pa, mix homogeneously, make polyurethane composition; Wherein, described inorganic filler is aluminum oxide, wherein the ratio of the parts by weight of inorganic filler is 1: 1.1 Alumina particles with a particle size D50 value between 45.73 μm and alumina particles with a particle size D50 value between 10.25 μm, the flame retardant is dibromoneopentyl glycol, and the catalyst is 1,8-diazepine Cyclo(5.4.0)undec-7-ene.

[0025] (2) The molding process of the saturable reactor in the present embodiment comprises the following st...

Embodiment 2

[0031] (1) The preparation technology of polyurethane composition in the present embodiment, comprises the steps:

[0032] Take 30g of polyether polyols, 0.5g of flame retardants, 0.8g of catalysts and 75g of inorganic fillers, mix them uniformly at a temperature of 60°C and a vacuum of 200Pa, then add 100g of diphenylmethane di The isocyanate and 75g of inorganic filler are uniformly mixed at a temperature of 50°C and a vacuum of 200Pa to prepare a polyurethane composition; wherein, the inorganic filler includes a particle size D50 value of 1:1.3 in parts by weight The large-particle inorganic filler with a particle size of 31.45 μm and the small-particle inorganic filler with a particle size D50 value of 14.97 μm, the flame retardant is dibromoneopentyl glycol, and the catalyst is 1,8-diazacyclo(5.4.0)11 Carb-7-ene, the inorganic filler is alumina.

[0033] (2) The molding process of the saturable reactor in this embodiment differs from the molding process of Embodiment 1 o...

Embodiment 3

[0035] (1) The preparation technology of polyurethane composition in the present embodiment, comprises the steps:

[0036]Take 25g of polyether polyols, 1.2g of flame retardants, 1g of catalysts and 120g of inorganic fillers, mix them uniformly at a temperature of 55°C and a vacuum of 150Pa, and then add 110g of diphenylmethane diisocyanate and 80g of inorganic fillers, mixed uniformly under the condition that the temperature is 30°C and the vacuum degree is 250Pa, and the polyurethane composition is prepared; wherein, the inorganic fillers include a particle size D50 value of 1:1.3 in parts by weight The large particle inorganic filler between 40.56 μm and the small particle inorganic filler with a particle size D50 value of 10.49 μm, the flame retardant is dibromoneopentyl glycol, and the catalyst is 1,8-diazacycle (5.4.0) deca One carbon-7-ene, the inorganic filler is alumina.

[0037] (2) The molding process of the saturable reactor in this embodiment differs from that of...

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Abstract

The present invention relates to a polyurethane composition and a saturated reactor using the same, wherein, the polyurethane composition, in parts by weight, its raw materials include 100-120 parts of diphenylmethane diisocyanate, 20-120 parts of polyether polyol 30 parts, 0.5-1 part of catalyst, 0.5-2 parts of flame retardant, 150-350 parts of inorganic fillers, said inorganic fillers include large particle inorganic fillers with particle diameter D50 between 30-50 μm and particle diameter D50 between 10-50 μm Small particle inorganic filler between 15 μm, the prepared polyurethane composition has good insulation and mechanical properties, and the saturated reactor is prepared by using the prepared polyurethane composition in combination with the existing high thermal conductivity epoxy resin, polyurethane The composition and the high thermal conductivity epoxy resin can play a synergistic effect, improve the heat conduction efficiency of the saturated reactor, and greatly reduce the operating temperature of the iron core of the saturated reactor.

Description

technical field [0001] The invention relates to the technical field of electrical components, in particular to a polyurethane composition and a saturated reactor using the same. Background technique [0002] Saturable reactors for DC converter valves are key components of thyristor converter valves in ultra-UHVDC power transmission projects. It can equalize the pressure of the converter valve and protect the converter valve. [0003] For example, Chinese patent document CN105070476A discloses an anode saturable reactor for a DC converter valve, including: a casing, a set of coils, at least a pair of iron cores and an iron core radiator; each iron core includes a first iron core part and The second iron core part, the first iron core part and the second iron core part are up and down U-shaped structure or left and right C-shaped structure; at least one pair of iron cores is fastened in pairs between the inner and outer walls of a group of coils to form a seal Coupling; at l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/48C08K13/02C08K3/22C08K3/36C08K3/28C08K3/34C08K5/053C09J175/08H01F27/22H02M1/32
CPCC08G18/48C08K3/22C08K3/28C08K3/34C08K3/36C08K5/053C08K13/02C08K2003/222C08K2003/2227C08K2003/282C08K2201/003C09J175/08H01F27/22H02M1/32
Inventor 张翀杨威史晓宁陈赟张卓陈新李维康肖雨尹立颜丙越
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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