CN105017727A - Flame-retarded resin composition, winding of dry type transformer and manufacturing method of winding of dry type transformer - Google Patents
Flame-retarded resin composition, winding of dry type transformer and manufacturing method of winding of dry type transformer Download PDFInfo
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- CN105017727A CN105017727A CN201510491285.8A CN201510491285A CN105017727A CN 105017727 A CN105017727 A CN 105017727A CN 201510491285 A CN201510491285 A CN 201510491285A CN 105017727 A CN105017727 A CN 105017727A
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Abstract
The invention discloses a flame-retarded resin composition, a winding of a dry type transformer and a manufacturing method of the winding of the dry type transformer. The flame-retarded resin composition comprises, by weight, 20 parts to 25 parts of bisphenol A epoxy resin, 16 parts to 20 parts of anhydride curing agent, 36 parts to 45 parts of activated silicon powder, 18 parts to 35 parts of compounded fire retardant, 0.1 part to 0.2 part of accelerant and 0 part to 1 part of color paste. The compounded fire retardant comprises, by weight, 5 parts to 10 parts of red phosphorus, 10 parts to 20 parts of active aluminum hydroxide and 3 parts to 5 parts of o-tolyl phosphate. The flame-retarded resin composition can be used as casting materials of the dry type transformer; a cured body manufactured through the flame-retarded resin composition has the advantages of being aging resistant, free of environment pollution, high in insulating performance, high in mechanical strength, good in safety performance, fireproof, flame resistant and the like, and the flame retardant performance of the cured body meets the requirements of the national standard GB/T2408-2008 and reaches the V-0-level standard.
Description
Technical field
The present invention relates to fire retardant material technical field, particularly relate to a kind of fire-proof resin composition, dry type transformer winding and preparation method thereof.
Background technology
From First transformer in mid-term in 19th century is born, almost become traditional, unique structure formation using transformer oil as the oil-filled transformer of the dielectric of power transformer in the world.But because transformer oil is inflammable and explosive, thus oil-filled transformer should not be arranged on the high place of fire protection requirement, and the leakage of oil of the transformer that is in operation also pollutes the environment.
Oil-filled transformer gradually little by volume, free from environmental pollution, high safety performance and epoxy resin dry type transformer easy to maintenance replace.Along with society ground with rapid changepl. never-ending changes and improvements is fast-developing, people are to environment, safety problem growing interest, also more and more higher to the requirement of dry type transformer.
But, the cast potting compound that the epoxy resin dry type transformer of prior art uses mostly is non-flame resistant resin or filler resin compound, and filler mostly also is the inorganics of the resistance combustion poor performance such as silicon powder, transformer winding is once meet extraneous naked light or self overload short circuit catches fire, mould material on coil also just becomes inflammable substance, together burns, and give off poisonous gas contaminate environment, transformer burns to be scrapped, and causes fire and heavy losses.Based on the requirement to environment protection and minimizing fire, people constantly find the suitable flame-retardant resin formulation that can be used on dry type transformer.
Summary of the invention
Based on this, the object of this invention is to provide a kind of fire-proof resin composition.
Concrete technical scheme is as follows:
A kind of fire-proof resin composition, comprises the raw material composition of following weight part:
Described compound flame retardant is the red phosphorus of weight ratio 5-10:10-20:3-5: active aluminium hydroxide: phosphoric acid trimethylbenzene phenolic ester.
Wherein in an embodiment, described compound flame retardant is the red phosphorus of weight ratio 5:10:3.5: active aluminium hydroxide: phosphoric acid trimethylbenzene phenolic ester.
Wherein in an embodiment, described anhydride curing agent is selected from methyl tetrahydrophthalic anhydride.
Wherein in an embodiment, described promotor is selected from tertiary amine.
Another object of the present invention is to provide the application of above-mentioned fire-proof resin composition.
Concrete technical scheme is as follows:
The application of above-mentioned fire-proof resin composition in dry transformer pouring material.
Another object of the present invention is to provide a kind of preparation method of dry type transformer winding
Concrete technical scheme is as follows:
A preparation method for dry type transformer winding, comprises the steps:
Take bisphenol A type epoxy resin, the active silica flour of 1/3-1/2 consumption, red phosphorus, the active aluminium hydroxide of 1/3-1/2 consumption, the phosphoric acid trimethylbenzene phenolic ester of 1/3-1/2 consumption, mill base by weight part described in claim 1, be uniformly mixed, obtain component A;
Take anhydride curing agent, the active silica flour of surplus, the active aluminium hydroxide of surplus, the phosphoric acid trimethylbenzene phenolic ester of surplus, promotor by weight part described in claim 1, be uniformly mixed, obtain B component;
Be provided with in the casting moulds of coil winding by being poured into after component A and B component mix and blend;
Then casting moulds is placed in sintering oven, at 85-95 DEG C, solidifies 7.5-8.5h, at 125-135 DEG C, solidify 11-13h;
Remove casting moulds after cooling, obtain described dry type transformer winding.
Another object of the present invention is to provide a kind of dry type transformer winding.
Concrete technical scheme is as follows:
The dry type transformer winding that above-mentioned preparation method prepares.
Principle and advantage of the present invention is as follows:
Fire-proof resin composition of the present invention can be applied to the mould material of dry type transformer, the cured body adopting this fire-proof resin composition to make has ageing-resistant, free from environmental pollution, the performance such as insulating property are strong, physical strength is high, safety performance is good, fire protection flame retarding, its flame retardant properties meets the requirement of standard GB/T/T 2408-2008, reaches V-0 grade standard.
Fire-proof resin composition of the present invention, is made up of bisphenol-A-type epoxy resin, anhydride curing agent, active silica flour, red phosphorus, active aluminium hydroxide, phosphoric acid trimethylbenzene phenolic ester (TCP), mill base and promotor.Be further described below in conjunction with the special-purpose anti-flaming resin combination of fire retardant mechanism to dry type transformer of the present invention.
Fire retardant mechanism:
The fire-retardant of material realizes mainly through following approach: 1. gas phase fire retardant mechanism; 2. condensed phase fire retardant mechanism; 3. heat exchange mechanism is interrupted.This formula mainly adopts phosphorus flame retardant and inorganic combustion inhibitor, they is used in thermosetting epoxy resin, produces extraordinary flame retardant synergistic effect.Wherein, phosphorus flame retardant comprises phosphoric acid trimethylbenzene phenolic ester, red phosphorus (surface is treated), and inorganic combustion inhibitor comprises red phosphorus, active aluminium hydroxide, active silica flour.
The fire retardant mechanism of phosphorus flame retardant: in this formula, red phosphorus and phosphoric acid trimethylbenzene phenolic ester (TCP) are important flame retardance element, phosphoric acid trimethylbenzene phenolic ester (TCP) more as softening agent, can reduce the physical strength of the viscosity before resin compound solidification and adjustment cured body.Red phosphorus and phosphoric acid trimethylbenzene phenolic ester (TCP) can generate phosphoric acid at a certain temperature.Phosphoric acid had both covered the surface of material, oxygen, volatile combustiblematerials and heat and inner superpolymer matrix is separated again, thus make burning be suppressed at the surface of material acceleration dehydration carbonization formation liquid film and layer of charcoal.The fire retardant mechanism reaction of phosphoric acid is as follows:
H
3PO
4→HPO
2+HPO+PO·
H·+PO·→HPO
HPO+H·→H
2+PO·
PO·+OH→HPO+O·
OH·+H
2+PO·→HPO+H
2O
The fire retardant mechanism of inorganic combustion inhibitor: the inorganic combustion inhibitor in this formula comprises red phosphorus, active aluminium hydroxide and active silica flour.Wherein, active aluminium hydroxide is a kind of nontoxic white powder, at a certain temperature can thermolysis Cheng Shui and aluminum oxide, because this decomposition course is a thermo-negative reaction, thus the temperature of burning is reduced, plays fire-retardant effect.The decomposition reaction of aluminium hydroxide is as follows:
Al(OH)
3→AL
20
3+H
20
Active silica flour is as a kind of inert diluent, and produce flame retardant effect due to the effect of non-combustible materials, it is again the main stuffing of dry transformer pouring material, can reduce resin demand, thus reduces the amount of flammable superpolymer.
Further, red phosphorus is controlled especially: active aluminium hydroxide: the weight ratio of phosphoric acid trimethylbenzene phenolic ester is 5-10:10-20:3-5 in the application, as previously described, phosphoric acid is the main fire retardant matter suppressing burning, and red phosphorus and water and oxygen reaction obtain phosphoric acid, so during burning, the water decomposited by aluminium hydroxide and red phosphorus reaction generate phosphoric acid.Generally, 5O
2+ P+6H
2o=4H
3pO
4, 1 part of aluminium hydroxide generates 3 parts of water, so 1 part of red phosphorus just will can obtain comparatively Tripyrophosphoric acid with minimum 2 parts of aluminium hydroxide association reactions.And the decomposition mechanism of phosphoric acid trimethylbenzene phenolic ester is generate phosphoric acid equally, but another feature of phosphoric acid trimethylbenzene phenolic ester is toughness reinforcing, so should not add, control the interpolation component being less than red phosphorus, if add component, the physical strength of epoxy-resin systems can reduce greatly.
Embodiment
By the following examples the application is further elaborated.
The raw material used in the embodiment of the present invention is as follows:
Anhydride curing agent is selected from methyl tetrahydrophthalic anhydride;
Promotor is selected from tertiary amine.
Embodiment 1
A kind of fire-proof resin composition, comprises the raw material composition of following weight part:
Described compound flame retardant is the red phosphorus of weight ratio 5:10:3.5: active aluminium hydroxide: phosphoric acid trimethylbenzene phenolic ester.
A preparation method for dry type transformer winding, comprises the steps:
Take bisphenol A type epoxy resin, the active silica flour of 1/2 consumption, red phosphorus, the active aluminium hydroxide of 1/2 consumption, the phosphoric acid trimethylbenzene phenolic ester of 1/2 consumption, mill base by above-mentioned weight part, be uniformly mixed, obtain component A;
Take anhydride curing agent, the active silica flour of surplus, the active aluminium hydroxide of surplus, the phosphoric acid trimethylbenzene phenolic ester of surplus, promotor by above-mentioned weight part, be uniformly mixed, obtain B component;
Be provided with in the casting moulds of coil winding by being poured into after component A and B component mix and blend;
Then casting moulds is placed in sintering oven, at 90 DEG C, solidifies 8h, at 130 DEG C, solidify 12h;
Remove casting moulds after cooling, obtain described dry type transformer winding.
The flame retardant properties of this dry type transformer winding meets the requirement of standard GB/T/T 2408-2008, reaches V-0 grade standard.
Embodiment 2
A kind of fire-proof resin composition, comprises the raw material composition of following weight part:
Described compound flame retardant is the red phosphorus of weight ratio 9:18:3: active aluminium hydroxide: phosphoric acid trimethylbenzene phenolic ester.
A preparation method for dry type transformer winding, comprises the steps:
Take bisphenol A type epoxy resin, the active silica flour of 1/3 consumption, red phosphorus, the active aluminium hydroxide of 1/3 consumption, the phosphoric acid trimethylbenzene phenolic ester of 1/3 consumption, mill base by above-mentioned weight part, be uniformly mixed, obtain component A;
Take anhydride curing agent, the active silica flour of surplus, the active aluminium hydroxide of surplus, the phosphoric acid trimethylbenzene phenolic ester of surplus, promotor by above-mentioned weight part, be uniformly mixed, obtain B component;
Be provided with in the casting moulds of coil winding by being poured into after component A and B component mix and blend;
Then casting moulds is placed in sintering oven, at 90 DEG C, solidifies 8h, at 130 DEG C, solidify 12h;
Remove casting moulds after cooling, obtain described dry type transformer winding.
The flame retardant properties of this dry type transformer winding meets the requirement of standard GB/T/T 2408-2008, reaches V-0 grade standard.
Comparative example
A kind of fire-proof resin composition, comprises the raw material composition of following weight part:
Described compound flame retardant is the red phosphorus of weight ratio 5:10:10: active aluminium hydroxide: phosphoric acid trimethylbenzene phenolic ester.
A preparation method for dry type transformer winding, comprises the steps:
Take bisphenol A type epoxy resin, the active silica flour of 1/2 consumption, red phosphorus, the active aluminium hydroxide of 1/2 consumption, the phosphoric acid trimethylbenzene phenolic ester of 1/2 consumption, mill base by above-mentioned weight part, be uniformly mixed, obtain component A;
Take anhydride curing agent, the active silica flour of surplus, the active aluminium hydroxide of surplus, the phosphoric acid trimethylbenzene phenolic ester of surplus, promotor by above-mentioned weight part, be uniformly mixed, obtain B component;
Be provided with in the casting moulds of coil winding by being poured into after component A and B component mix and blend;
Then casting moulds is placed in sintering oven, at 90 DEG C, solidifies 8h, at 130 DEG C, solidify 12h;
Remove casting moulds after cooling, obtain described dry type transformer winding.
Contrast with the product of embodiment 1, the phosphoric acid trimethylbenzene phenolic ester consumption of comparative example has exceeded 1 times of red phosphorus, as previously mentioned, the decomposition mechanism of phosphoric acid trimethylbenzene phenolic ester is generate phosphoric acid equally, but another feature of phosphoric acid trimethylbenzene phenolic ester is toughness reinforcing, so should not add, the interpolation component being less than red phosphorus be controlled, if add component, the physical strength of epoxy-resin systems can reduce greatly.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this specification sheets is recorded.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (7)
1. a fire-proof resin composition, is characterized in that, comprises the raw material composition of following weight part:
Described compound flame retardant is the red phosphorus of weight ratio 5-10:10-20:3-5: active aluminium hydroxide: phosphoric acid trimethylbenzene phenolic ester.
2. fire-proof resin composition according to claim 1, is characterized in that, described compound flame retardant is the red phosphorus of weight ratio 5:10:3.5: active aluminium hydroxide: phosphoric acid trimethylbenzene phenolic ester.
3. fire-proof resin composition according to claim 1 and 2, is characterized in that, described anhydride curing agent is selected from methyl tetrahydrophthalic anhydride.
4. fire-proof resin composition according to claim 1 and 2, is characterized in that, described promotor is selected from tertiary amine.
5. the application of the fire-proof resin composition described in any one of claim 1-4 in dry transformer pouring material.
6. a preparation method for dry type transformer winding, is characterized in that, comprises the steps:
Take bisphenol A type epoxy resin, the active silica flour of 1/3-1/2 consumption, red phosphorus, the active aluminium hydroxide of 1/3-1/2 consumption, the phosphoric acid trimethylbenzene phenolic ester of 1/3-1/2 consumption, mill base by weight part described in claim 1, be uniformly mixed, obtain component A;
Take anhydride curing agent, the active silica flour of surplus, the active aluminium hydroxide of surplus, the phosphoric acid trimethylbenzene phenolic ester of surplus, promotor by weight part described in claim 1, be uniformly mixed, obtain B component;
Be provided with in the casting moulds of coil winding by being poured into after component A and B component mix and blend;
Then casting moulds is placed in sintering oven, at 85-95 DEG C, solidifies 7.5-8.5h, at 125-135 DEG C, solidify 11-13h;
Remove casting moulds after cooling, obtain described dry type transformer winding.
7. the dry type transformer winding for preparing of preparation method described in claim 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510491285.8A CN105017727A (en) | 2015-08-11 | 2015-08-11 | Flame-retarded resin composition, winding of dry type transformer and manufacturing method of winding of dry type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510491285.8A CN105017727A (en) | 2015-08-11 | 2015-08-11 | Flame-retarded resin composition, winding of dry type transformer and manufacturing method of winding of dry type transformer |
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| CN105017727A true CN105017727A (en) | 2015-11-04 |
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|---|---|---|---|
| CN201510491285.8A Pending CN105017727A (en) | 2015-08-11 | 2015-08-11 | Flame-retarded resin composition, winding of dry type transformer and manufacturing method of winding of dry type transformer |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS548643A (en) * | 1977-06-21 | 1979-01-23 | Matsushita Electric Ind Co Ltd | Flame-retardant adhesive |
| JPS5483939A (en) * | 1977-12-19 | 1979-07-04 | Matsushita Electric Ind Co Ltd | Flame-retardant adhesive |
| JPH0593097A (en) * | 1991-09-19 | 1993-04-16 | Idemitsu Petrochem Co Ltd | Polyethylene resin composition |
| CN102181128A (en) * | 2011-03-30 | 2011-09-14 | 吴江固德电材系统有限公司 | Epoxy resin premix and preparation technology of the epoxy resin premix |
| CN103642118A (en) * | 2013-12-21 | 2014-03-19 | 深圳市沃尔核材股份有限公司 | Irradiating crosslinking halogen-free flame-retardant material with non-foaming pipe wall in heating shrinkage and application thereof |
| CN103724847A (en) * | 2014-01-14 | 2014-04-16 | 宜昌奥佳新材料科技有限公司 | Graphite, rubber and plastic composite flame retardant material |
| CN104786408A (en) * | 2015-04-30 | 2015-07-22 | 江苏铭安电气有限公司 | Method for preparing epoxy resin for casting dry type transformer |
| CN104788912A (en) * | 2015-04-30 | 2015-07-22 | 江苏铭安电气有限公司 | Insulation castable for dry-type transformer |
-
2015
- 2015-08-11 CN CN201510491285.8A patent/CN105017727A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS548643A (en) * | 1977-06-21 | 1979-01-23 | Matsushita Electric Ind Co Ltd | Flame-retardant adhesive |
| JPS5483939A (en) * | 1977-12-19 | 1979-07-04 | Matsushita Electric Ind Co Ltd | Flame-retardant adhesive |
| JPH0593097A (en) * | 1991-09-19 | 1993-04-16 | Idemitsu Petrochem Co Ltd | Polyethylene resin composition |
| CN102181128A (en) * | 2011-03-30 | 2011-09-14 | 吴江固德电材系统有限公司 | Epoxy resin premix and preparation technology of the epoxy resin premix |
| CN103642118A (en) * | 2013-12-21 | 2014-03-19 | 深圳市沃尔核材股份有限公司 | Irradiating crosslinking halogen-free flame-retardant material with non-foaming pipe wall in heating shrinkage and application thereof |
| CN103724847A (en) * | 2014-01-14 | 2014-04-16 | 宜昌奥佳新材料科技有限公司 | Graphite, rubber and plastic composite flame retardant material |
| CN104786408A (en) * | 2015-04-30 | 2015-07-22 | 江苏铭安电气有限公司 | Method for preparing epoxy resin for casting dry type transformer |
| CN104788912A (en) * | 2015-04-30 | 2015-07-22 | 江苏铭安电气有限公司 | Insulation castable for dry-type transformer |
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Application publication date: 20151104 |