CN110079051A - A kind of high stability current mutual inductor mould material and preparation method thereof - Google Patents
A kind of high stability current mutual inductor mould material and preparation method thereof Download PDFInfo
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- CN110079051A CN110079051A CN201910394131.5A CN201910394131A CN110079051A CN 110079051 A CN110079051 A CN 110079051A CN 201910394131 A CN201910394131 A CN 201910394131A CN 110079051 A CN110079051 A CN 110079051A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The present invention provides a kind of high stability current mutual inductor mould material and preparation method thereof, is related to current transformer technical field.The current transformer mould material is made of raw material from the following weight: 25-28 parts of epoxy resin, 12-14 parts of vinyl polybutadiene rubber, 2-3 parts of liquid silastic, 1-1.5 parts of diacetyl tartaric acid monodiglyceride, 2-3 parts of cryogenic glass powder, 2-2.4 parts of acid-washed quartz sand, 8-10 parts of methylnadic anhydride, 0.4-0.6 parts of dimethylethanolamine, aqueous castor oil 0.2-0.6 parts, 1-2 parts of lauryl diglycidyl ether, 0.8-1.2 parts of coloring agent, 0.4-0.6 parts of antioxidant, 0.5-0.8 parts of dispersing agent.The present invention overcomes the deficiencies in the prior art, improve the crack resistance and stability of conventional current mutual inductor mould material, while promoting the ageing-resistant performance of product, extend product service life, promote economic benefit, are suitable for promoting the use of.
Description
Technical field
The present invention relates to current transformer processing technique fields, and in particular to a kind of high stability current mutual inductor casting material
Material and preparation method thereof.
Background technique
Primary side high current is converted into secondary side low current to measure according to electromagnetic induction principle by current transformer
Instrument requires also higher and higher, the mould material used for mutual inductor to current transformer with the development of power industry
It having different needs, traditional current transformer mould material usually only selects common epoxy resin, but due to asphalt mixtures modified by epoxy resin
Since the variation of environment makes it and its is easy cracking and aging in the property and use process of rouge itself, electric current is seriously affected
The service life of mutual inductor.
It is unresolved that application No. is " the current transformer dedicated pouring materials and preparation method thereof " of CN201510259902.1
The above problem provides a kind of mould material for effectivelying prevent finished product to crack, and improves the yield rate of product, but it is in product
Stability and its ageing-resistant performance on slightly deficiency, good prolongation effect is not played to the service life of product, so
The current transformer mould material of a high stability is studied as important directions at this stage.
Summary of the invention
In view of the shortcomings of the prior art, the present invention provides a kind of high stability current mutual inductor mould material and its preparation side
Method, improves the crack resistance and stability of conventional current mutual inductor mould material, while promoting the ageing-resistant performance of product, extends
Product service life promotes economic benefit, is suitable for promoting the use of.
In order to achieve the above object, technical solution of the present invention is achieved by the following technical programs:
A kind of high stability current mutual inductor mould material, the current transformer mould material by following parts by weight original
Material is made: 25-28 parts of epoxy resin, 12-14 parts of vinyl polybutadiene rubber, 2-3 parts of liquid silastic, diacetyl tartarate
Single double glyceride 1-1.5 parts, 2-3 parts of cryogenic glass powder, 2-2.4 parts of acid-washed quartz sand, 8-10 parts of methylnadic anhydride, diformazan
0.4-0.6 parts of ethylethanolamine, castor oil 0.2-0.6 parts aqueous, 1-2 parts of lauryl diglycidyl ether, coloring agent 0.8-1.2
Part, 0.4-0.6 parts of antioxidant, 0.5-0.8 parts of dispersing agent.
Preferably, the antioxidant is bis- (3,5- three-level butyl -4- hydroxy phenyl) thioethers, double Lauryl Alcohol esters and three
(Lauryl Alcohol) ester mass ratio 2: 4: 1 is mixed with.
Preferably, the dispersing agent is polyacrylamide, lauryl sodium sulfate, triethyl group hexyl phosphoric acid, tripolyphosphate
Any one in sodium.
The preparation method of the current transformer mould material the following steps are included:
(1) epoxy resin, vinyl polybutadiene rubber and liquid silastic are weighed by weight, in high-temperature stirring after mixing
Heat up quickly stirring in tank, and it is spare to obtain mixed slurry；
(2) it is added in grinder after being dried after mixing cryogenic glass powder and acid-washed quartz sand, must be mixed after grinding
It is spare that powder crosses 400-600 mesh；
(3) it is placed in pyroreaction kettle together after above-mentioned mixed powder being added in the mixed slurry in step (1), in argon gas
Protection is lower to carry out high temperature mixing, and it is spare to obtain mixed resin；
(4) diacetyl tartaric acid monodiglyceride, aqueous castor oil, dimethylethanolamine and dispersant are stirred equal
Above-mentioned mixed resin is added after even, carries out vacuumizing mixing in reaction kettle, it is spare to obtain mixture；
(5) lauryl diglycidyl ether, antioxidant and coloring agent is added in above-mentioned mixture to carry out in kneading machine
High-temperature mixing, rear addition methylnadic anhydride, which stirs evenly, to be cast in mold, and drying and shaping demoulding obtains mutual inductor of the present invention
Mould material.
Preferably, the temperature that heating is quickly stirred in the step (1) is 260-280 DEG C, speed of agitator 600-800r/
Min, mixing time 80-100min.
Preferably, mixed powder crosses 600 meshes in the step (2).
Preferably, the temperature of step (3) the high temperature mixing is 320-340 DEG C, incorporation time 50-80min.
Preferably, the vacuum degree that stirring is vacuumized in the step (4) is 800-1000Pa, and the pumpdown time is 4-
4.5h。
Preferably, the temperature that step (5) high temperature is kneaded is 250-190 DEG C, mixing time 1.5-2h, and is dried
The temperature of sizing is 60-80 DEG C.
The present invention provides a kind of high stability current mutual inductor mould material and preparation method thereof, excellent compared with prior art
Point is:
(1) present invention addition epoxy resin, vinyl polybutadiene rubber and liquid silastic are the main of mould material
While guaranteeing the normal performance of current transformer the brittleness of single epoxy resin is effectively reduced, while promoting product in base-material
Toughness, effectively promoted casting yield rate, and vinyl polybutadiene rubber and liquid silastic mixing can effectively be promoted
The heat resistance of material, while glass transition temperature is reduced, reduce spoilage of current transformer during using this.
(2) present invention mixes addition added with substances such as cryogenic glass powder, acid-washed quartz sand, and after being ground up, sieved, effectively
Wear-resisting, the acid-proof alkaline of product are promoted, while high temperature mixes mixed resin under protection of argon gas after being ground, and can effectively fill
Divide dispersed substance, promote the stability of product, and is further high temperature modified to base-material progress, enhances the stretch-resistance of product
Can, while it being effectively prevent the aging of product, it prolongs its service life.
(3) present invention also adds diacetyl tartaric acid monodiglyceride, dimethylethanolamine, aqueous castor oil and dodecane
The ingredients such as base glycidol ether, effectively promote the antioxygenic property of product, while increasing the yield rate of product, and enhance product
Toughness and tensile strength, it is comprehensive to promote properties of product.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below with reference to the embodiment of the present invention pair
Technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is a part of the invention
Embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making wound
Every other embodiment obtained under the premise of the property made labour, shall fall within the protection scope of the present invention.
Embodiment 1:
A kind of high stability current mutual inductor mould material, the current transformer mould material by following parts by weight original
Material is made: 25 parts of epoxy resin, 12 parts of vinyl polybutadiene rubber, 2 parts of liquid silastic, diacetyl tartarate list diglycerol
1 part of ester, 2 parts of cryogenic glass powder, 2 parts of acid-washed quartz sand, 8 parts of methylnadic anhydride, 0.4 part of dimethylethanolamine, aqueous castor
0.2 part of sesame oil, 1 part of lauryl diglycidyl ether, 0.8 part of coloring agent, 0.4 part of antioxidant, 0.5 part of dispersing agent.
The antioxidant is bis- (3,5- three-level butyl -4- hydroxy phenyl) thioether, double Lauryl Alcohol esters and three (12 carbon
Alcohol) ester mass ratio 2: 4: 1 is mixed with；The dispersing agent is polyacrylamide, lauryl sodium sulfate, triethyl group hexyl phosphorus
Any one in acid, sodium tripolyphosphate.
The preparation method of the current transformer mould material the following steps are included:
(1) epoxy resin, vinyl polybutadiene rubber and liquid silastic are weighed by weight, in high-temperature stirring after mixing
Heat up quickly stirring in tank, and it is spare to obtain mixed slurry；
(2) it is added in grinder after being dried after mixing cryogenic glass powder and acid-washed quartz sand, must be mixed after grinding
It is spare that powder crosses 400-600 mesh；
(3) it is placed in pyroreaction kettle together after above-mentioned mixed powder being added in the mixed slurry in step (1), in argon gas
Protection is lower to carry out high temperature mixing, and it is spare to obtain mixed resin；
(4) diacetyl tartaric acid monodiglyceride, aqueous castor oil, dimethylethanolamine and dispersant are stirred equal
Above-mentioned mixed resin is added after even, carries out vacuumizing mixing in reaction kettle, it is spare to obtain mixture；
(5) lauryl diglycidyl ether, antioxidant and coloring agent is added in above-mentioned mixture to carry out in kneading machine
High-temperature mixing, rear addition methylnadic anhydride, which stirs evenly, to be cast in mold, and drying and shaping demoulding obtains mutual inductor of the present invention
Mould material.
Wherein, the temperature that heating is quickly stirred in the step (1) is 260-280 DEG C, speed of agitator 600-800r/
Min, mixing time 80-100min；Mixed powder crosses 600 meshes in the step (2)；Step (3) the high temperature mixing
Temperature is 320-340 DEG C, incorporation time 50-80min；The vacuum degree that stirring is vacuumized in the step (4) is 800-
1000Pa, and the pumpdown time is 4-4.5h；The temperature that step (5) high temperature is kneaded is 250-190 DEG C, and mixing time is
1.5-2h, and the temperature of drying and shaping is 60-80 DEG C.
Embodiment 2:
A kind of high stability current mutual inductor mould material, the current transformer mould material by following parts by weight original
Material is made: 28 parts of epoxy resin, 14 parts of vinyl polybutadiene rubber, 3 parts of liquid silastic, diacetyl tartarate list diglycerol
1.5 parts of ester, 3 parts of cryogenic glass powder, 2.4 parts of acid-washed quartz sand, 10 parts of methylnadic anhydride, 0.6 part of dimethylethanolamine, water
Property 0.6 part of castor oil, 2 parts of lauryl diglycidyl ether, 1.2 parts of coloring agent, 0.6 part of antioxidant, 0.8 part of dispersing agent.
The antioxidant is bis- (3,5- three-level butyl -4- hydroxy phenyl) thioether, double Lauryl Alcohol esters and three (12 carbon
Alcohol) ester mass ratio 2: 4: 1 is mixed with；The dispersing agent is polyacrylamide, lauryl sodium sulfate, triethyl group hexyl phosphorus
Any one in acid, sodium tripolyphosphate.
The preparation method of the current transformer mould material the following steps are included:
(1) epoxy resin, vinyl polybutadiene rubber and liquid silastic are weighed by weight, in high-temperature stirring after mixing
Heat up quickly stirring in tank, and it is spare to obtain mixed slurry；
(2) it is added in grinder after being dried after mixing cryogenic glass powder and acid-washed quartz sand, must be mixed after grinding
It is spare that powder crosses 400-600 mesh；
(3) it is placed in pyroreaction kettle together after above-mentioned mixed powder being added in the mixed slurry in step (1), in argon gas
Protection is lower to carry out high temperature mixing, and it is spare to obtain mixed resin；
(4) diacetyl tartaric acid monodiglyceride, aqueous castor oil, dimethylethanolamine and dispersant are stirred equal
Above-mentioned mixed resin is added after even, carries out vacuumizing mixing in reaction kettle, it is spare to obtain mixture；
(5) lauryl diglycidyl ether, antioxidant and coloring agent is added in above-mentioned mixture to carry out in kneading machine
High-temperature mixing, rear addition methylnadic anhydride, which stirs evenly, to be cast in mold, and drying and shaping demoulding obtains mutual inductor of the present invention
Mould material.
Wherein, the temperature that heating is quickly stirred in the step (1) is 260-280 DEG C, speed of agitator 600-800r/
Min, mixing time 80-100min；Mixed powder crosses 600 meshes in the step (2)；Step (3) the high temperature mixing
Temperature is 320-340 DEG C, incorporation time 50-80min；The vacuum degree that stirring is vacuumized in the step (4) is 800-
1000Pa, and the pumpdown time is 4-4.5h；The temperature that step (5) high temperature is kneaded is 250-190 DEG C, and mixing time is
1.5-2h, and the temperature of drying and shaping is 60-80 DEG C.
Embodiment 3:
A kind of high stability current mutual inductor mould material, the current transformer mould material by following parts by weight original
Material is made: 27 parts of epoxy resin, 13 parts of vinyl polybutadiene rubber, 2.5 parts of liquid silastic, diacetyl tartarate list are double sweet
1.3 parts of grease, 2.5 parts of cryogenic glass powder, 2.2 parts of acid-washed quartz sand, 9 parts of methylnadic anhydride, dimethylethanolamine 0.5
Part, 0.4 part of aqueous castor oil, 1.5 parts of lauryl diglycidyl ether, 1 part of coloring agent, 0.5 part of antioxidant, dispersing agent 0.7
Part.
The antioxidant is bis- (3,5- three-level butyl -4- hydroxy phenyl) thioether, double Lauryl Alcohol esters and three (12 carbon
Alcohol) ester mass ratio 2: 4: 1 is mixed with；The dispersing agent is polyacrylamide, lauryl sodium sulfate, triethyl group hexyl phosphorus
Any one in acid, sodium tripolyphosphate.
The preparation method of the current transformer mould material the following steps are included:
(1) epoxy resin, vinyl polybutadiene rubber and liquid silastic are weighed by weight, in high-temperature stirring after mixing
Heat up quickly stirring in tank, and it is spare to obtain mixed slurry；
(2) it is added in grinder after being dried after mixing cryogenic glass powder and acid-washed quartz sand, must be mixed after grinding
It is spare that powder crosses 400-600 mesh；
(3) it is placed in pyroreaction kettle together after above-mentioned mixed powder being added in the mixed slurry in step (1), in argon gas
Protection is lower to carry out high temperature mixing, and it is spare to obtain mixed resin；
(4) diacetyl tartaric acid monodiglyceride, aqueous castor oil, dimethylethanolamine and dispersant are stirred equal
Above-mentioned mixed resin is added after even, carries out vacuumizing mixing in reaction kettle, it is spare to obtain mixture；
(5) lauryl diglycidyl ether, antioxidant and coloring agent is added in above-mentioned mixture to carry out in kneading machine
High-temperature mixing, rear addition methylnadic anhydride, which stirs evenly, to be cast in mold, and drying and shaping demoulding obtains mutual inductor of the present invention
Mould material.
Wherein, the temperature that heating is quickly stirred in the step (1) is 260-280 DEG C, speed of agitator 600-800r/
Min, mixing time 80-100min；Mixed powder crosses 600 meshes in the step (2)；Step (3) the high temperature mixing
Temperature is 320-340 DEG C, incorporation time 50-80min；The vacuum degree that stirring is vacuumized in the step (4) is 800-
1000Pa, and the pumpdown time is 4-4.5h；The temperature that step (5) high temperature is kneaded is 250-190 DEG C, and mixing time is
1.5-2h, and the temperature of drying and shaping is 60-80 DEG C.
Embodiment 4:
Thermo-oxidative ageing detection is carried out to the resulting mould material of the present invention, mould material obtained by above-described embodiment 1-3 is set
For experimental group 1-3, test method is as follows:
(1) choosing common poured with epoxy resin material is control group, and experimental group and control group material selection is identical heavy
Amount and shape simultaneously mark；
(2) each group material is cleaned in ultrasound environments using alcohol, it is latter to be placed in 120 DEG C of constant temperature ovens together
After dry 2h takes out；
(3) material of experimental group and control group is placed in 170 DEG C of constant temperature ovens, takes out each group material afterwards at regular intervals
It weighs after material is cooling, calculates mass loss rate.
Following table is the testing result of mass loss during aging course (η) under different time (t):
As seen from the above table, heat loss amount of the resulting material of 1-3 of embodiment of the present invention at a temperature of 170 DEG C is significantly lower than general
The loss amount of logical epoxide resin material, i.e. product of the present invention have good heatproof air aging performance compared to epoxy resin.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features；And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (9)
1. a kind of high stability current mutual inductor mould material, which is characterized in that the current transformer mould material is by following
The raw material of parts by weight is made: 25-28 parts of epoxy resin, 12-14 parts of vinyl polybutadiene rubber, 2-3 parts of liquid silastic, double
Acetyltartaric acid single 1-1.5 parts of double glyceride, 2-3 parts of cryogenic glass powder, 2-2.4 parts of acid-washed quartz sand, methylnadic anhydride
8-10 parts, 0.4-0.6 parts of dimethylethanolamine, castor oil 0.2-0.6 parts aqueous, 1-2 parts of lauryl diglycidyl ether, dyeing
0.8-1.2 parts of agent, 0.4-0.6 parts of antioxidant, 0.5-0.8 parts of dispersing agent.
2. a kind of high stability current mutual inductor mould material according to claim 1, it is characterised in that: described anti-oxidant
Agent is that bis- (3,5- three-level butyl -4- hydroxy phenyl) thioethers, double Lauryl Alcohol esters and three (Lauryl Alcohol) ester mass ratioes 2: 4: 1 are mixed
Close preparation.
3. a kind of high stability current mutual inductor mould material according to claim 1, it is characterised in that: the dispersing agent
For any one in polyacrylamide, lauryl sodium sulfate, triethyl group hexyl phosphoric acid, sodium tripolyphosphate.
4. a kind of preparation method of high stability current mutual inductor mould material, it is characterised in that: the current transformer casting
The preparation method of material the following steps are included:
(1) epoxy resin, vinyl polybutadiene rubber and liquid silastic are weighed by weight, after mixing in high-temperature stirring tank
Heating quickly stirring, it is spare to obtain mixed slurry；
(2) it is added in grinder after being dried after mixing cryogenic glass powder and acid-washed quartz sand, mixed powder mistake is obtained after grinding
400-600 mesh is spare；
(3) it is placed in pyroreaction kettle together after above-mentioned mixed powder being added in the mixed slurry in step (1), in the protection of argon gas
Lower progress high temperature mixing, it is spare to obtain mixed resin；
(4) after mixing evenly by diacetyl tartaric acid monodiglyceride, aqueous castor oil, dimethylethanolamine and dispersant
Above-mentioned mixed resin is added, carries out vacuumizing mixing in reaction kettle, it is spare to obtain mixture；
(5) lauryl diglycidyl ether, antioxidant and coloring agent is added in above-mentioned mixture and carries out high temperature in kneading machine
It is kneaded, rear addition methylnadic anhydride, which stirs evenly, to be cast in mold, and drying and shaping demoulding obtains mutual inductor casting of the present invention
Material.
5. a kind of preparation method of high stability current mutual inductor mould material according to claim 4, it is characterised in that:
The temperature that heating is quickly stirred in the step (1) is 260-280 DEG C, speed of agitator 600-800r/min, and mixing time is
80-100min。
6. a kind of preparation method of high stability current mutual inductor mould material according to claim 4, it is characterised in that:
Mixed powder crosses 600 meshes in the step (2).
7. a kind of preparation method of high stability current mutual inductor mould material according to claim 4, it is characterised in that:
The temperature of step (3) the high temperature mixing is 320-340 DEG C, incorporation time 50-80min.
8. a kind of preparation method of high stability current mutual inductor mould material according to claim 4, it is characterised in that:
The vacuum degree that stirring is vacuumized in the step (4) is 800-1000Pa, and the pumpdown time is 4-4.5h.
9. a kind of preparation method of high stability current mutual inductor mould material according to claim 4, it is characterised in that:
The temperature that step (5) high temperature is kneaded is 250-190 DEG C, mixing time 1.5-2h, and the temperature of drying and shaping is 60-
80℃。
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| CN201910394131.5A CN110079051A (en) | 2019-05-13 | 2019-05-13 | A kind of high stability current mutual inductor mould material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102020842A (en) * | 2010-12-22 | 2011-04-20 | 东莞市意普万工程塑料有限公司 | Nylon composite material special for electric wire and cable jacket and preparation method thereof |
| CN102816411A (en) * | 2011-06-10 | 2012-12-12 | 株式会社日立产机系统 | Electrical insulating material and high voltage equipment |
| CN103030934A (en) * | 2012-12-13 | 2013-04-10 | 东莞市海旭工艺制品有限公司 | Novel epoxy wood substitute |
| CN109456573A (en) * | 2017-11-03 | 2019-03-12 | 株洲电力机车广缘科技有限责任公司 | A kind of poured with epoxy resin insulating materials and preparation method thereof |
-
2019
- 2019-05-13 CN CN201910394131.5A patent/CN110079051A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102020842A (en) * | 2010-12-22 | 2011-04-20 | 东莞市意普万工程塑料有限公司 | Nylon composite material special for electric wire and cable jacket and preparation method thereof |
| CN102816411A (en) * | 2011-06-10 | 2012-12-12 | 株式会社日立产机系统 | Electrical insulating material and high voltage equipment |
| CN103030934A (en) * | 2012-12-13 | 2013-04-10 | 东莞市海旭工艺制品有限公司 | Novel epoxy wood substitute |
| CN109456573A (en) * | 2017-11-03 | 2019-03-12 | 株洲电力机车广缘科技有限责任公司 | A kind of poured with epoxy resin insulating materials and preparation method thereof |
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Application publication date: 20190802 |