CN104629587A - Low temperature adhesive type self-adhesive paint for transposing cable of transformer - Google Patents
Low temperature adhesive type self-adhesive paint for transposing cable of transformer Download PDFInfo
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- CN104629587A CN104629587A CN201510088612.5A CN201510088612A CN104629587A CN 104629587 A CN104629587 A CN 104629587A CN 201510088612 A CN201510088612 A CN 201510088612A CN 104629587 A CN104629587 A CN 104629587A
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- transposed conductor
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Abstract
The invention provides low temperature adhesive type self-adhesive paint for a transposing cable of a transformer. The self-adhesive paint comprises the following raw material components in parts by weight: 116-120 parts of epoxy resin, 46-50 parts of anhydride type curing agent, 1.6-2 parts of epoxidized soybean oil, 0.3-0.4 part of flatting agent and 100-120 parts of xylene. The low temperature adhesive type self-adhesive paint for the transposing cable of the transformer is applied to the transposing cable of the extra-high voltage and extreme high voltage transformers for meeting the low temperature adhesive requirement for the transposing cable of the extra-high voltage and extreme high voltage transformers.
Description
Technical field
The invention belongs to paint field, be specifically related to a kind of high-tension transformer transposed conductor low temperature adhesion type self-adhesion paint.
Background technology
Domestic application number provide a kind of fire resistant environment-friendly varnished wire hot melt self-adhering paint and preparation method thereof for the patent of 2013105988200.It is made up of the raw material of following weight part: nylon 12112-15, polystyrene 8 ~ 12, polyacrylonitrile 10 ~ 12, E-12 epoxy resin 8 ~ 10, diphenylmethanediisocyanate 2 ~ 3, silicone resin 7 ~ 9, silane coupling agent 1 ~ 2, tetrafluoroethylene 2 ~ 3, urethane acrylate 10 ~ 15, zinc oxide 3 ~ 4, magnesium oxide 1 ~ 2, nano silicon 1 ~ 2, auxiliary agent 7 ~ 9, dimethylbenzene 100 ~ 120, M-and P-cresols 80 ~ 90; Can meet heat conditions requirement more than 180 DEG C with the varnished wire hot melt self-adhering paint of preparation of filling a prescription disclosed in its invention, goods have good application adaptability, bright and clean, the easy demoulding of finished product, heat-resisting, cohesive force evenly, deformation resistant.
Traditional self-adhesion paint bonding temperature is higher, generally will reach more than 150 DEG C, but due to the insulation paper of transposed conductor will thermal ageing more than 120 DEG C, thus the self-adhesion paint of this tack temperature cannot be applied on high-power transformer.Although the domestic self-adhesion paint that existing bonding temperature is lower, but in the process that temperature raises, its cohesive strength can decline rapidly, therefore need to develop one can be 110 ~ 120 DEG C at a lower temperature and issue heat-dissipating bonding, still can keep the self-adhesion paint compared with high bond strength, to meet the service requirements of high-power transformer transformer use temperature about 110 DEG C simultaneously.
Summary of the invention
The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of transposed conductor of transformer low temperature adhesion type self-adhesion paint, the defect of the needs of ultra-high voltage and extra-high voltage transformer transposed conductor low temperature adhesion can not be met for overcoming self-adhesion paint in prior art.
In order to reach foregoing invention object and other objects, the present invention is achieved by the following technical solutions:
A kind of transposed conductor of transformer low temperature adhesion type self-adhesion paint, it is characterized in that, the feed composition of following weight part drawn together by described self-adhesion enamel-cover:
Preferably, the number-average molecular weight of described epoxy resin is 5000 ~ 8000.
Preferably, the softening temperature of described epoxy resin is 140 ~ 150 DEG C.
Preferably, described acid anhydride type curing agent is aromatics isomerization anhydride curing agent.
More preferably, described aromatics isomerization anhydride curing agent is selected from 3-methyl tetrahydro phthalic anhydride, 4-methyl tetrahydro phthalic anhydride, one or more in methyl hexahydrophthalic anhydride and MNA.
Preferably, described flow agent is polyacrylic ester.The number-average molecular weight 5000-6000 of described polyacrylic ester.
The invention also discloses a kind of method preparing transposed conductor of transformer low temperature adhesion type self-adhesion paint as described above, comprise the following steps:
1) according to the weight part of each feed composition, first dimethylbenzene is joined in reactor, be heated to 45 ~ 50 DEG C;
2) then epoxy resin is added, insulated and stirred;
3) be down to room temperature, add acid anhydride type curing agent, epoxy soybean oil and flow agent successively, namely stirring reaction obtains high-tension transformer transposed conductor low temperature adhesion type self-adhesion paint.
Preferably, step 3) described in reaction reaction times be at least 1 hour.
The invention also discloses the application of transposed conductor of transformer low temperature adhesion type self-adhesion paint as described above on transposed conductor of transformer.
Self-adhesion paint in the present invention is especially adapted to the application on the transposed conductor of transformer of ultra-high voltage and extra-high voltage.
The transposed conductor of high-tension transformer disclosed in the present invention low temperature adhesion type self-adhesion paint has following beneficial effect:
1) bonding temperature of the self-adhesion paint in the present invention is 110 ~ 120 DEG C.Compared with traditional self-adhesion paint, achieve lower bonding temperature, under high temperature, still keep the target compared with high bond strength simultaneously, be used in the globality and physical strength and burst anti-short circuit capability that ultra-high voltage and extra-high voltage transformer transposed conductor can improve winding.
2) use paint transposed conductor main performance index of the present invention as follows:
A) snappiness tack is good;
B) room temperature cohesive strength > 10N/mm
2;
C) the cohesive strength > 5N/mm under 110 DEG C of high temperature
2.
The transposed conductor of high-tension transformer disclosed in the present invention low temperature adhesion type self-adhesion paint overcomes many disadvantages of the prior art and creative.
Embodiment
Below by way of specific specific examples, embodiments of the present invention are described, those skilled in the art the content disclosed by this specification sheets can understand other advantages of the present invention and effect easily.The present invention can also be implemented or be applied by embodiments different in addition, and the every details in this specification sheets also can based on different viewpoints and application, carries out various modification or change not deviating under spirit of the present invention.
Embodiment 1
The feed composition of following weight part drawn together by the enamel-cover of self-adhesion disclosed in the present embodiment:
The number-average molecular weight 5000 ~ 8000 of described epoxy resin.
The softening temperature of described epoxy resin is 140 ~ 150 DEG C.
Described acid anhydride type curing agent is 3-methyl tetrahydro phthalic anhydride.
Described flow agent is selected from polyacrylic ester; The number-average molecular weight 5000 ~ 6000 of described polyacrylic ester.
Embodiment 2
The feed composition of following weight part drawn together by the enamel-cover of self-adhesion disclosed in the present embodiment:
The number-average molecular weight 5000 ~ 8000 of described epoxy resin.
The softening temperature of described epoxy resin is 140 ~ 150 DEG C.
Described acid anhydride type curing agent is 4-methyl tetrahydro phthalic anhydride.
Described flow agent is selected from polyacrylic ester; The number-average molecular weight 5000 ~ 6000 of described polyacrylic ester.
Embodiment 3
The feed composition of following weight part drawn together by the enamel-cover of self-adhesion disclosed in the present embodiment:
The number-average molecular weight 5000 ~ 8000 of described epoxy resin.
The softening temperature of described epoxy resin is 140 ~ 150 DEG C.
Described acid anhydride type curing agent is methyl hexahydrophthalic anhydride.
Described flow agent is selected from polyacrylic ester; The number-average molecular weight 5000 ~ 6000 of described polyacrylic ester.
Embodiment 4
The feed composition of following weight part drawn together by the enamel-cover of self-adhesion disclosed in the present embodiment:
The number-average molecular weight 5000 ~ 8000 of described epoxy resin.
The softening temperature of described epoxy resin is 140 ~ 150 DEG C.
Described acid anhydride type curing agent is MNA.
Described flow agent is selected from polyacrylic ester; The number-average molecular weight 5000 ~ 6000 of described polyacrylic ester.
Embodiment 5
The feed composition of following weight part drawn together by the enamel-cover of self-adhesion disclosed in the present embodiment:
The number-average molecular weight 5000 ~ 8000 of described epoxy resin.
The softening temperature of described epoxy resin is 140 ~ 150 DEG C.
Described acid anhydride type curing agent is 3-methyl tetrahydro phthalic anhydride.
Described flow agent is selected from polyacrylic ester; The number-average molecular weight 5000 ~ 6000 of described polyacrylic ester.
Self-adhesion paint in embodiment 1 ~ 5 prepares all in accordance with the following methods:
1) according to the weight part of each feed composition, first dimethylbenzene is joined in reactor, be heated to 45 ~ 50 DEG C;
2) then epoxy resin is added, insulated and stirred;
3) be down to room temperature, add acid anhydride type curing agent, epoxy soybean oil and flow agent successively, namely stirring reaction obtains high-tension transformer transposed conductor low temperature adhesion type self-adhesion paint.
In above-described embodiment, the reaction times is 1 hour.
Be coated on ultra-high voltage and extra-high voltage transformer transposed conductor to the high-tension transformer transposed conductor low temperature adhesion type self-adhesion paint of preparation in embodiment 1 ~ 5 according to following technique: for 1.10mm × 5.00mm acetal enameled sheet wire, be coated with line twice, self-adhesion film thickness 0.01 ~ 0.02mm, import furnace temperature 150 DEG C, middle furnace temperature 195 DEG C, outlet furnace temperature 210 DEG C, linear velocity 3m/min.
The bonding temperature adopted is 115 DEG C.The bonding time is 48 hours.
Test its cohesive strength at room temperature by " JB 6758.1-2007 transposed conductor first part general provision " and be all greater than 10N/mm
2; Cohesive strength under 110 DEG C of high temperature is all greater than 5N/mm
2.
The fundamental property of self-adhesion paint is carried out according to the requirement in " JBT 7599.1-94 enamelled winding wire insullac part 1: general provision ", " JBT 7599.14-94 enamelled winding wire insullac the 14th part: epoxy self-bonding wire enamel ", " the flat winding wire part 2 of GBT 7095.2 enamel-cover copper: 120 grades of acetal paint wire copper-clad flat lines ", and result is as following table:
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.
Claims (9)
1. a transposed conductor of transformer low temperature adhesion type self-adhesion paint, it is characterized in that, the feed composition of following weight part drawn together by described self-adhesion enamel-cover:
2. transposed conductor of transformer low temperature adhesion type self-adhesion paint as claimed in claim 1, is characterized in that, the number-average molecular weight 5000 ~ 8000 of described epoxy resin.
3. transposed conductor of transformer low temperature adhesion type self-adhesion paint as claimed in claim 1, it is characterized in that, the softening temperature of described epoxy resin is 140 ~ 150 DEG C.
4. transposed conductor of transformer low temperature adhesion type self-adhesion paint as claimed in claim 1, it is characterized in that, described acid anhydride type curing agent is aromatics isomerization anhydride curing agent.
5. transposed conductor of transformer low temperature adhesion type self-adhesion paint as claimed in claim 4, it is characterized in that, described aromatics isomerization anhydride curing agent is selected from 3-methyl tetrahydro phthalic anhydride, 4-methyl tetrahydro phthalic anhydride, one or more in methyl hexahydrophthalic anhydride and MNA.
6. transposed conductor of transformer low temperature adhesion type self-adhesion paint as claimed in claim 1, it is characterized in that, described flow agent is selected from polyacrylic ester; The number-average molecular weight 5000 ~ 6000 of described polyacrylic ester.
7. prepare as arbitrary in claim 1 ~ 6 as described in the method for transposed conductor of transformer low temperature adhesion type self-adhesion paint, comprise the following steps:
1) according to the weight part of each feed composition, first dimethylbenzene is joined in reactor, be heated to 45 ~ 50 DEG C;
2) epoxy resin is added, insulated and stirred;
3) be down to room temperature, add acid anhydride type curing agent, epoxy soybean oil and flow agent successively, namely stirring reaction obtains high-tension transformer transposed conductor low temperature adhesion type self-adhesion paint.
8. method as claimed in claim 7, is characterized in that, step 3) described in reaction times of reaction be at least 1 hour.
9. the application of transposed conductor of transformer low temperature adhesion type self-adhesion paint on transposed conductor of transformer as described in as arbitrary in claim 1 ~ 6.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510088612.5A CN104629587B (en) | 2015-02-26 | 2015-02-26 | A kind of transposed conductor of transformer low temperature adhesion type self-adhesion paint |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510088612.5A CN104629587B (en) | 2015-02-26 | 2015-02-26 | A kind of transposed conductor of transformer low temperature adhesion type self-adhesion paint |
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| CN104629587A true CN104629587A (en) | 2015-05-20 |
| CN104629587B CN104629587B (en) | 2017-03-01 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130075230A (en) * | 2011-12-27 | 2013-07-05 | 주식회사 케이씨씨 | Rust resisting paint and anticorrosive coating pelicle using the same |
| CN103382319A (en) * | 2013-06-27 | 2013-11-06 | 马鞍山采石矶涂料有限公司 | Epoxy impregnated resin and preparation method thereof |
| CN103382352A (en) * | 2013-06-27 | 2013-11-06 | 马鞍山采石矶涂料有限公司 | Filling type heat-conductive insulating impregnating varnish and preparation method thereof |
| CN103555136A (en) * | 2013-10-25 | 2014-02-05 | 安徽文峰电子科技集团有限公司 | Epoxy impregnating varnish and preparation method thereof |
| CN103897557A (en) * | 2014-03-21 | 2014-07-02 | 溧阳市佳禾电子材料有限公司 | High-strength oil-resistant heat-resistant electromagnetic wire epoxy self-adhesive paint and preparation method thereof |
-
2015
- 2015-02-26 CN CN201510088612.5A patent/CN104629587B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130075230A (en) * | 2011-12-27 | 2013-07-05 | 주식회사 케이씨씨 | Rust resisting paint and anticorrosive coating pelicle using the same |
| CN103382319A (en) * | 2013-06-27 | 2013-11-06 | 马鞍山采石矶涂料有限公司 | Epoxy impregnated resin and preparation method thereof |
| CN103382352A (en) * | 2013-06-27 | 2013-11-06 | 马鞍山采石矶涂料有限公司 | Filling type heat-conductive insulating impregnating varnish and preparation method thereof |
| CN103555136A (en) * | 2013-10-25 | 2014-02-05 | 安徽文峰电子科技集团有限公司 | Epoxy impregnating varnish and preparation method thereof |
| CN103897557A (en) * | 2014-03-21 | 2014-07-02 | 溧阳市佳禾电子材料有限公司 | High-strength oil-resistant heat-resistant electromagnetic wire epoxy self-adhesive paint and preparation method thereof |
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