CN114324192A - Method for judging oxidation resistance of tin-plated wire - Google Patents
Method for judging oxidation resistance of tin-plated wire Download PDFInfo
- Publication number
- CN114324192A CN114324192A CN202210016444.9A CN202210016444A CN114324192A CN 114324192 A CN114324192 A CN 114324192A CN 202210016444 A CN202210016444 A CN 202210016444A CN 114324192 A CN114324192 A CN 114324192A
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- Prior art keywords
- tin
- plated wire
- oxidation resistance
- solution
- glossiness
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- 230000003647 oxidation Effects 0.000 title claims abstract description 42
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 19
- HYHCSLBZRBJJCH-UHFFFAOYSA-N sodium polysulfide Chemical compound [Na+].S HYHCSLBZRBJJCH-UHFFFAOYSA-N 0.000 claims abstract description 17
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims abstract description 11
- 230000003301 hydrolyzing effect Effects 0.000 claims abstract description 10
- 229910052979 sodium sulfide Inorganic materials 0.000 claims description 4
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 claims description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 239000011593 sulfur Substances 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 150000004763 sulfides Chemical class 0.000 claims description 2
- 238000007747 plating Methods 0.000 abstract description 6
- 230000001590 oxidative effect Effects 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 29
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012085 test solution Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The invention discloses a method for judging the oxidation resistance of a tinned wire, which comprises the following steps: placing a tin-plated wire to be tested into a hydrolytic sulfide solution to be immersed for a preset time; taking the tin-plated wire to be tested out of the hydrolytic sulfide solution, and oxidizing the tin-plated wire to a second preset time; and obtaining whether the oxidation resistance of the tin-plated wire reaches the standard or not according to the color and the glossiness of the tin-plated wire to be detected. The tin-plating wire is soaked by selecting the sodium polysulfide solution, then is exposed in the air to accelerate the oxidation of the tin-plating wire, and then whether the oxidation resistance of the tin-plating wire to be tested reaches the standard or not can be quickly judged by observing the color and the glossiness of the tin-plating wire.
Description
Technical Field
The invention relates to the field of material detection, in particular to a method for judging the oxidation resistance of a tinned wire.
Background
The tinned copper wire is soft in material and good in conductivity, and compared with a bare copper wire, the tinned copper wire is stronger in corrosion resistance and oxidation resistance, and the service life of the electric cable can be greatly prolonged; however, the corrosion resistance and the oxidation resistance of the tin-plated wire are different, and when the corrosion resistance and the oxidation resistance of the tin-plated wire are not up to the standard, the tin-plated wire is yellow and seriously blackened in a short time, so that serious quality accidents are caused; at present, the chemical components of the tin raw material and the tin layer thickness of the finished tin-plated wire product are mainly detected in the industry, and a method for quickly and directly detecting the oxidation resistance of the tin-plated wire is not provided.
Disclosure of Invention
The invention provides a method for judging the oxidation resistance of a tinned wire, aiming at solving the technical problem of low efficiency of testing the oxidation resistance of the tinned wire in the prior art.
The technical scheme adopted by the invention is as follows:
the invention provides a method for judging the oxidation resistance of a tinned wire, which comprises the following steps:
placing a tin-plated wire to be tested into a hydrolytic sulfide solution to be immersed for a preset time;
taking out the tin-plated wire to be tested from the hydrolytic sulfide solution and exposing the tin-plated wire to the air, and waiting for a second preset time;
and judging whether the oxidation resistance of the tin-plated wire reaches the standard or not according to the color and the glossiness of the tin-plated wire to be detected.
And when the color of the tin-plated wire to be detected is black and the glossiness is less than the preset glossiness, judging that the oxidation resistance of the tin-plated wire does not reach the standard.
And when the color of the tin-plated wire to be detected is yellow and the glossiness is greater than a second preset glossiness, judging that the oxidation resistance of the tin-plated wire reaches the standard.
The preferred embodiments are: the hydrolysable sulfide salt solution is a sodium polysulfide solution.
The preset time ranges from 4 to 6 minutes.
The second preset time ranges from 8 to 12 minutes.
The preparation method of the sodium polysulfide solution comprises the following steps: dissolving sodium sulfide crystals in distilled water until the solution is saturated at a preset temperature, then adding sulfur, heating and stirring to completely saturate the solution, standing the solution for a third preset time, and filtering to prepare sodium polysulfide solution.
Further, the preset temperature ranges from 18 to 22 degrees.
Further, the third preset time is in the range of 20 to 28 hours.
Furthermore, the tinning wire to be detected is twisted into a strip shape and is placed into the hydrolytic sulfide solution.
Compared with the prior art, the tin-plated wire can be quickly judged whether the oxidation resistance of the tin-plated wire to be tested reaches the standard or not by selecting the sodium polysulfide solution to soak the tin-plated wire, exposing the tin-plated wire in the air to accelerate the oxidation of the tin-plated wire and observing the color and the glossiness of the tin-plated wire.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a flow chart in an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The principles and construction of the present invention will be described in detail below with reference to the drawings and examples.
As shown in FIG. 1, the invention provides a method for determining oxidation resistance of a tin-plated wire, comprising the following steps: placing the tin-plated wire to be tested into a hydrolytic sulfide solution (specifically, a sodium polysulfide solution or other hydrolytic sulfide solutions can be selected) to be immersed for a preset time, taking the tin-plated wire to be tested out of the sodium sulfide solution, and oxidizing the tin-plated wire to be tested for a second preset time; and judging whether the oxidation resistance of the tin-plated wire reaches the standard or not according to the color and the glossiness of the tin-plated wire to be detected. The hydrolytic sulfide solution is characterized in that sodium polysulfide solution is specifically selected, the tin-plated wire is soaked by the sodium polysulfide solution and then exposed in the air, the oxidation of the tin-plated wire is accelerated, and whether the tin-plated wire reaches the standard or not can be quickly judged by observing the color and the glossiness of the tin-plated wire.
Specifically, when the color of the tinned wire to be tested is black and the glossiness is less than the preset glossiness, the oxidation resistance of the tinned wire is judged not to reach the standard. Namely, the color of the tin-plated wire is blackened after being oxidized, and the glossiness of the tin-plated wire is too low due to rough surface, so that the oxidation resistance of the tin-plated wire does not reach the standard.
And when the color of the tin-plated wire to be detected is yellow and the glossiness is greater than a second preset glossiness, judging that the oxidation resistance of the tin-plated wire reaches the standard. Namely, the tin-plated wire is yellow in color and high in glossiness after being oxidized by the sodium polysulfide solution, which shows that the tin-plated wire has strong oxidation resistance.
When the sodium polysulfide solution is selected as the test solution, the preset time ranges from 4 minutes to 6 minutes, and 5 minutes can be optimally selected as the immersion preset time of the tin plating wire. The second preset time is in the range of 8-12 minutes, and preferably 10 minutes can be selected as the time length of the tin-plated wire exposed in the air, so that the oxidation of the tin-plated wire can be accelerated in the air, and the judgment time length can be shortened.
The specific preparation method of the sodium polysulfide solution comprises the following steps: dissolving sodium sulfide crystals in distilled water to form a solution until the solution is saturated at a preset temperature, then adding sulfur (more than 250 g/L), heating and stirring to completely saturate the solution, standing the solution for a third preset time, and filtering to prepare the sodium polysulfide solution. The predetermined temperature is in the range of 18 to 22 degrees, preferably 20 degrees. The third predetermined time is in the range of 20 to 28 hours, preferably 24 hours.
The following are the specific experimental procedures and results of the present invention.
Twisting the normal A and abnormal B tinning wires into strips, respectively soaking the samples in sodium polysulfide solution for 5min, 10min and 15min, and then exposing the samples in air for 5min, 10min and 15min to obtain oxidation degree; totally 9 groups of experiments are carried out, and the difference of the oxidation degrees of the two tin plating wires after the sample is soaked in the sodium polysulfide solution for 5min and then is exposed to air for 10min is found through comparison.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A method for judging the oxidation resistance of a tin-plated wire is characterized by comprising the following steps:
placing a tin-plated wire to be tested into a hydrolytic sulfide solution to be immersed for a preset time;
taking out the tin-plated wire to be tested from the hydrolytic sulfide solution and exposing the tin-plated wire to the air, and waiting for a second preset time;
and judging whether the oxidation resistance of the tin-plated wire to be detected reaches the standard or not according to the color and the glossiness of the tin-plated wire to be detected.
2. The method for determining oxidation resistance of a tin-plated wire according to claim 1, wherein when the color of the tin-plated wire to be measured is black and the glossiness is less than the preset glossiness, it is determined that the oxidation resistance of the tin-plated wire to be measured does not meet the standard.
3. The method for determining oxidation resistance of a tin-plated wire according to claim 1, wherein when the color of the tin-plated wire to be measured is yellow and the glossiness is greater than a second preset glossiness, the oxidation resistance of the tin-plated wire to be measured is determined to reach the standard.
4. The method of determining oxidation resistance of a tin-plated wire according to claim 1, wherein the hydrolyzable sulfide solution is a sodium polysulfide solution.
5. The method for determining oxidation resistance of a tin-plated wire according to claim 4, wherein the predetermined time is in a range of 4 to 6 minutes.
6. The method for determining oxidation resistance of a tin-plated wire according to claim 4, wherein the second predetermined time is in a range of 8 to 12 minutes.
7. The method for determining oxidation resistance of a tin-plated wire according to claim 4, wherein the sodium polysulfide solution is prepared by a method comprising: dissolving sodium sulfide crystals in distilled water until the solution is saturated at a preset temperature, then adding sulfur, heating and stirring to completely saturate the solution, standing the solution for a third preset time, and filtering to prepare sodium polysulfide solution.
8. The method for determining oxidation resistance of a tin-plated wire according to claim 7, wherein the predetermined temperature is in a range of 18 to 22 degrees.
9. The method for determining oxidation resistance of a tin-plated wire according to claim 7, wherein the third predetermined time is in a range of 20 to 28 hours.
10. The method for determining the oxidation resistance of the tin-plated wire according to claim 1, wherein the tin-plated wire to be measured is twisted into a strip shape and put into a solution containing a hydrolyzable sulfide salt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210016444.9A CN114324192A (en) | 2022-01-07 | 2022-01-07 | Method for judging oxidation resistance of tin-plated wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210016444.9A CN114324192A (en) | 2022-01-07 | 2022-01-07 | Method for judging oxidation resistance of tin-plated wire |
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| Publication Number | Publication Date |
|---|---|
| CN114324192A true CN114324192A (en) | 2022-04-12 |
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| CN202210016444.9A Pending CN114324192A (en) | 2022-01-07 | 2022-01-07 | Method for judging oxidation resistance of tin-plated wire |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202710445U (en) * | 2012-07-18 | 2013-01-30 | 上海宝钢工业技术服务有限公司 | Test box for tin plate corrosion resistance tests |
| CN103884708A (en) * | 2014-04-04 | 2014-06-25 | 哈尔滨工业大学 | Sulfur-containing test paper and method for detecting sulphidation stains by use of sulfur-containing test paper |
| CN105021516A (en) * | 2014-04-15 | 2015-11-04 | 上海梅山钢铁股份有限公司 | Testing liquid and testing adhesion film for detecting tin plating plate corrosion resistance, and detection method thereof |
| CN108956928A (en) * | 2018-04-25 | 2018-12-07 | 远东电缆有限公司 | The detection method of twisted tinned copper conductor tin layers integrality |
| CN111024539A (en) * | 2019-12-23 | 2020-04-17 | 北京斯普乐电线电缆有限公司 | Durability detection method for tin plating adhesion of tin-plated copper braided flat wire |
-
2022
- 2022-01-07 CN CN202210016444.9A patent/CN114324192A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202710445U (en) * | 2012-07-18 | 2013-01-30 | 上海宝钢工业技术服务有限公司 | Test box for tin plate corrosion resistance tests |
| CN103884708A (en) * | 2014-04-04 | 2014-06-25 | 哈尔滨工业大学 | Sulfur-containing test paper and method for detecting sulphidation stains by use of sulfur-containing test paper |
| CN105021516A (en) * | 2014-04-15 | 2015-11-04 | 上海梅山钢铁股份有限公司 | Testing liquid and testing adhesion film for detecting tin plating plate corrosion resistance, and detection method thereof |
| CN108956928A (en) * | 2018-04-25 | 2018-12-07 | 远东电缆有限公司 | The detection method of twisted tinned copper conductor tin layers integrality |
| CN111024539A (en) * | 2019-12-23 | 2020-04-17 | 北京斯普乐电线电缆有限公司 | Durability detection method for tin plating adhesion of tin-plated copper braided flat wire |
Non-Patent Citations (1)
| Title |
|---|
| 中华人民共和国工业和信息化部: "中华人民共和国电子行业标准 SJ/T11519-2015 电子连接用镀锡铜线规范", 中华人民共和国电子行业标准 SJ/T11519-2015》, pages 1 - 8 * |
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Application publication date: 20220412 |