CN108975661B - Tin stripping liquid for float glass and surface tin stripping method - Google Patents
Tin stripping liquid for float glass and surface tin stripping method Download PDFInfo
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- CN108975661B CN108975661B CN201811007580.1A CN201811007580A CN108975661B CN 108975661 B CN108975661 B CN 108975661B CN 201811007580 A CN201811007580 A CN 201811007580A CN 108975661 B CN108975661 B CN 108975661B
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- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 title claims abstract description 146
- 239000005329 float glass Substances 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000007788 liquid Substances 0.000 title claims abstract description 19
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims description 56
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 54
- 239000003381 stabilizer Substances 0.000 claims description 53
- 239000000243 solution Substances 0.000 claims description 48
- 229940120146 EDTMP Drugs 0.000 claims description 34
- NFDRPXJGHKJRLJ-UHFFFAOYSA-N edtmp Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CCN(CP(O)(O)=O)CP(O)(O)=O NFDRPXJGHKJRLJ-UHFFFAOYSA-N 0.000 claims description 34
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 33
- 229910017604 nitric acid Inorganic materials 0.000 claims description 33
- 239000004317 sodium nitrate Substances 0.000 claims description 27
- 235000010344 sodium nitrate Nutrition 0.000 claims description 27
- 239000007864 aqueous solution Substances 0.000 claims description 25
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical group Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 claims description 22
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical compound OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 claims description 9
- 239000002253 acid Substances 0.000 claims description 9
- -1 diethyl triaminepentaacetic acid Chemical compound 0.000 claims description 8
- 150000003839 salts Chemical class 0.000 claims description 8
- 229910021627 Tin(IV) chloride Inorganic materials 0.000 claims description 7
- YDONNITUKPKTIG-UHFFFAOYSA-N [Nitrilotris(methylene)]trisphosphonic acid Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CP(O)(O)=O YDONNITUKPKTIG-UHFFFAOYSA-N 0.000 claims description 5
- 238000000137 annealing Methods 0.000 claims description 5
- BAERPNBPLZWCES-UHFFFAOYSA-N (2-hydroxy-1-phosphonoethyl)phosphonic acid Chemical compound OCC(P(O)(O)=O)P(O)(O)=O BAERPNBPLZWCES-UHFFFAOYSA-N 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 229910002651 NO3 Inorganic materials 0.000 claims 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims 1
- 125000004177 diethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims 1
- 239000011521 glass Substances 0.000 abstract description 51
- 230000008569 process Effects 0.000 abstract description 9
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 238000009826 distribution Methods 0.000 abstract description 2
- 238000005530 etching Methods 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 description 18
- 238000002834 transmittance Methods 0.000 description 13
- 238000003756 stirring Methods 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 7
- 238000001035 drying Methods 0.000 description 7
- 239000010410 layer Substances 0.000 description 6
- 229910000679 solder Inorganic materials 0.000 description 6
- CJGYQECZUAUFSN-UHFFFAOYSA-N oxygen(2-);tin(2+) Chemical compound [O-2].[Sn+2] CJGYQECZUAUFSN-UHFFFAOYSA-N 0.000 description 5
- 230000035515 penetration Effects 0.000 description 5
- QHGNHLZPVBIIPX-UHFFFAOYSA-N tin(II) oxide Inorganic materials [Sn]=O QHGNHLZPVBIIPX-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- DBVJJBKOTRCVKF-UHFFFAOYSA-N Etidronic acid Chemical compound OP(=O)(O)C(O)(C)P(O)(O)=O DBVJJBKOTRCVKF-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 229910021626 Tin(II) chloride Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 2
- 239000005341 toughened glass Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000006060 molten glass Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 229910001432 tin ion Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- YQMWDQQWGKVOSQ-UHFFFAOYSA-N trinitrooxystannyl nitrate Chemical compound [Sn+4].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O YQMWDQQWGKVOSQ-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B18/00—Shaping glass in contact with the surface of a liquid
- C03B18/02—Forming sheets
- C03B18/14—Changing the surface of the glass ribbon, e.g. roughening
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Surface Treatment Of Glass (AREA)
Abstract
The invention provides a tin stripping solution for float glass and a surface tin stripping method. The tin stripping solution has good stability and uniform component distribution, can uniformly and quickly remove the tin layer on the surface of the float glass, has the advantages of high tin stripping speed, simple tin stripping method, easy operation, clean tin stripping and the like, and can effectively eliminate the five-color phenomenon on the surface of the glass. The tin stripping liquid has low corrosion to glass, the micro-etching rate is about 0.3 micron/min, and the tin stripping process does not damage the glass.
Description
Technical Field
The invention relates to a method for removing tin surface of tin layer on the surface of float glass and a preparation formula, in particular to a method for dealing with the phenomenon of five colors of float glass.
Background
Float glass is widely used, and is one of the most important raw sheets in glass deep processing, and the forming process is completed in a tin bath into which protective gas is introduced, i.e. molten glass continuously flows into the tin bath from an overflow channel and a launder, spreads on the tin liquid surface and drifts forwards under the traction of a transmission roller, and completes the steps of spreading and thinning by means of surface tension and gravity under a certain temperature system. After cooling, the glass is supported by a transition roller table, leaves the tin bath, enters an annealing kiln, and is cut, inspected and boxed. The float glass produced by the process has the characteristics of good quality, multiple varieties, high yield, short operation period and the like.
However, the formation of the tin bath has a problem which is difficult to avoid, namely a five-color phenomenon on the single-layer surface of the float glass, which can also be called as a rainbow phenomenon, and the rainbow phenomenon seriously affects the quality parameters of the float glass, such as scattering, light transmittance and the like, and the later processing of the glass deep processing industry, such as tempering, film coating and the like, and is also one of the main differences between the quality of the float glass and the international advanced level in China. The reasons for this phenomenon are: in the process of producing float glass, the lower surface of the glass is contacted with molten tin for a few minutes, and tin ions enter the lower surface of the glass to form a thin tin-infiltrated layer. The glass is heated in an oxidizing environment, tin is oxidized to produce stannous oxide (SnO), which diffuses into the surface layer of the glass in contact with the molten tin, and the thicker the glass, the greater the probability of producing glass. When the temperature of the glass in a tempering furnace exceeds 600 ℃, stannous oxide (SnO) in the surface layer of the glass is oxidized into stannic oxide (SnO)2). Due to Sn4+Ionic radius less than Sn2+Ionic radius, if oxidized Sn2+The area where the glass is soft will make this areaThe glass shrinks and wrinkles, and a rainbow or fog-like thin layer appears, which is the surface five-color phenomenon. The tin penetration amount is an important control parameter in the tin penetration process of the float glass, and researches show that the larger the tin penetration amount on the surface of the glass is, the more serious the five-color phenomenon is, so that in order to solve the common conditions of large tin penetration amount and serious five-color of the float glass, the market competitiveness of the float glass in China is improved, researches are carried out aiming at the problem, and effective measures for reducing the tin penetration amount and lightening the five-color phenomenon of the glass are provided.
At present, the main measures for reducing the tin infiltration amount are as follows: reduce the temperature of the tin bath, strengthen the sealing of the tin bath, improve the pressure of the tin bath and improve H in protective gas2And (3) adding pure metal iron sheets into the molten metal tin to purify the molten tin. All the measures have the disadvantages of complicated operation process, complex process flow and high cost, and the problem of tin surface on the glass surface cannot be completely solved in the measures. Therefore, it is imperative to find a method which has lower cost, can simplify the tin stripping operation flow and eliminate the tin content on the glass surface.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the float glass tin stripping solution which can reduce the tin amount on the surface of the float glass, does not damage the glass and eliminates the surface multicolour phenomenon of the float glass.
The invention also provides a tin stripping method for the surface of float glass, which adopts the tin stripping liquid to carry out tin stripping treatment on the surface of the glass, has convenient operation, fast and thorough tin stripping, does not influence the physicochemical property of the glass, eliminates the multicolour phenomenon on the surface of the glass, improves the scattering rate and the light transmittance of the glass, is more convenient for the deep processing of the glass and effectively improves the market competitiveness of the float glass.
The specific technical scheme of the invention is as follows:
the tin stripping liquid for float glass comprises the following components in percentage by mass: 67.5-98% of nitric acid, 1-20% of ferric nitrate and 0.1-5% of stabilizing agent.
Preferably, the tin stripping liquid comprises the following components in percentage by mass: 85-88% of nitric acid, 12-15% of ferric nitrate and 0.5-2% of stabilizing agent.
Further, the stabilizer is composed of stannous salt, diethyltriaminepentaacetic acid (DTPA), organic phosphonic acid and sodium nitrate. Based on 100% of the stabilizer, preferably, the stabilizer comprises the following components in percentage by weight: 5-15% of stannous salt, 5-15% of diethyl triaminepentaacetic acid (DTPA), 20-30% of organic phosphonic acid and 40-60% of sodium nitrate. More preferably, the weight percentage of each component in the stabilizer is as follows: 12.7% of stannous salt, diethyl triaminepentaacetic acid (DTPA), 10.6% of organic phosphonic acid and 53.1% of sodium nitrate.
Further, the divalent tin salt of the stabilizer is a divalent tin salt such as tin chloride or tin nitrate. The organic phosphonic acid is ATMP (aminotrimethylene phosphonic acid), HEDP (hydroxyethylidene diphosphonic acid), EDTMP (ethylenediamine tetramethylene phosphonic acid), or the like, preferably EDTMP (ethylenediamine tetramethylene phosphonic acid).
The float glass tin stripping solution is simple to prepare, nitric acid and ferric nitrate are uniformly mixed, then stannous salt and sodium nitrate in a stabilizer are added and uniformly mixed, finally, diethyltriamine pentaacetic acid (DTPA) and organic phosphonic acid are added and uniformly mixed, and the float glass tin stripping solution is obtained.
In the formula of the tin stripping solution, the concentration of nitric acid is high, concentrated nitric acid can react with tin on the surface of glass to form white precipitate, and the reaction formula is as follows.
Ferric nitrate is used as a catalyst to promote the speed of tin removal, and the stabilizer has the effects of ensuring that all components and concentration in the tin removing liquid are uniformly and stably distributed and are not easy to volatilize so as to realize consistent tin removing degree of all parts of glass, and simultaneously can ensure that white precipitates formed by the reaction of concentrated nitric acid and tin can be dissolved in the tin removing liquid, cannot be deposited on the surface of the glass, and is convenient to clean. The tin stripping solution can quickly and uniformly remove the tin layer on the surface of the float glass, thereby realizing the tin stripping effect. The color and light transmittance of the glass can be influenced by too low or too high concentration of the ferric nitrate; the tin stripping speed can be reduced and the glass preparation time can be prolonged due to the excessively low concentration of the nitric acid; if the concentration of the stabilizing agent is too low, the concentrations of nitric acid and ferric nitrate in the tin stripping liquid are unstable, so that the tin stripping degree of each part of the glass is different when the tin stripping is carried out on the glass, and the problems of color spots, non-uniform glass color, different light transmittance and the like can occur after the tin stripping.
The invention also provides a method for removing tin on the surface of float glass, which comprises the following steps: and (3) coating the float glass tin stripping solution on the surface of the float glass to strip tin, or soaking the float glass into the float glass tin stripping solution to strip tin. Preferably, the tin stripping time is 5-10 min. And after the tin removing treatment is finished, cleaning and drying the tin removing liquid on the surface of the float glass.
Furthermore, the tin stripping solution can be coated on the surface of the float glass by spraying, brushing and the like.
Furthermore, the finished product glass of the float glass is the float glass obtained by tin bath forming-annealing process.
The invention provides the tin stripping liquid with special components, which has good stability and uniform component distribution, can uniformly and quickly remove a tin layer on the surface of float glass, has the advantages of high tin stripping speed, simple tin stripping method, easy operation, clean tin stripping and the like, and can effectively eliminate the five-color phenomenon on the surface of the glass. The tin stripping liquid has low corrosion to glass, the micro-etching rate is about 0.3 micron/min, and the tin stripping process does not damage the glass.
Drawings
FIG. 1 is a picture of a tempered glass tableware tray before tin stripping treatment.
FIG. 2 is a drawing of a tempered glass tableware tray after tin stripping treatment.
Detailed Description
The present invention is further illustrated by the following specific examples, which are intended to be exemplary only and are not intended to be limiting.
In the following examples, the concentrations are all mass percent concentrations unless otherwise specified.
Example 1
1000kg of 85wt% nitric acid aqueous solution, 120kg of ferric nitrate and 31kg of stabilizer are used for preparing the tin stripping solution. Wherein the stabilizer consists of tin chloride, diethyltriaminepentaacetic acid (DTPA), EDTMP (ethylenediamine tetramethylene phosphonic acid) and sodium nitrate, and the content of each component in the stabilizer is (wt%) based on 100 percent of the stabilizer: 12.7% of stannic chloride, 10.6% of diethyl triaminepentaacetic acid (DTPA), 23.6% of EDTMP (ethylenediamine tetramethylene phosphonic acid) and 53.1% of sodium nitrate.
And adding the ferric nitrate, the tin chloride and the sodium nitrate into a nitric acid aqueous solution, uniformly mixing, then adding the DTPA and the EDTMP, and uniformly mixing and stirring to obtain the tin stripping solution.
Example 2
1000kg of 88wt% nitric acid aqueous solution, 160kg of ferric nitrate and 42kg of stabilizer were used to prepare a tin stripping solution. The stabilizer was the same as in example 1.
And adding the ferric nitrate, the tin chloride and the sodium nitrate into a nitric acid aqueous solution, uniformly mixing, then adding the DTPA and the EDTMP, and uniformly mixing and stirring to obtain the tin stripping solution.
Example 3
1000kg of 86wt% nitric acid aqueous solution, 150kg of ferric nitrate and 10kg of stabilizer are used for preparing the tin stripping solution. The stabilizer was the same as in example 1.
And adding the ferric nitrate, the tin chloride and the sodium nitrate into a nitric acid aqueous solution, uniformly mixing, then adding the DTPA and the EDTMP, and uniformly mixing and stirring to obtain the tin stripping solution.
Example 4
1000kg of 98wt% nitric acid aqueous solution, 200kg of ferric nitrate and 50kg of stabilizer are used for preparing the tin stripping solution. The stabilizer was the same as in example 1.
And adding the ferric nitrate, the tin chloride and the sodium nitrate into a nitric acid aqueous solution, uniformly mixing, then adding the DTPA and the EDTMP, and uniformly mixing and stirring to obtain the tin stripping solution.
Example 5
1000kg of a 67.5wt% nitric acid aqueous solution, 10kg of ferric nitrate and 1kg of a stabilizer were used to prepare a tin stripping solution. The stabilizer was the same as in example 1.
And adding the ferric nitrate, the tin chloride and the sodium nitrate into a nitric acid aqueous solution, uniformly mixing, then adding the DTPA and the EDTMP, and uniformly mixing and stirring to obtain the tin stripping solution.
Example 6
1000kg of 75wt% nitric acid aqueous solution, 80kg of ferric nitrate and 23kg of stabilizer are used for preparing the tin stripping solution. The stabilizer was the same as in example 1.
And adding the ferric nitrate, the tin chloride and the sodium nitrate into a nitric acid aqueous solution, uniformly mixing, then adding the DTPA and the EDTMP, and uniformly mixing and stirring to obtain the tin stripping solution.
Example 7
1000kg of 85wt% nitric acid aqueous solution, 120kg of ferric nitrate and 31kg of stabilizer are used for preparing the tin stripping solution. Wherein the stabilizer consists of tin chloride, diethyltriaminepentaacetic acid (DTPA), EDTMP (ethylenediamine tetramethylene phosphonic acid) and sodium nitrate, and the content of each component in the stabilizer is (wt%) based on 100 percent of the stabilizer: 5% of stannic chloride, 8% of diethyltriaminepentaacetic acid (DTPA), 30% of EDTMP (ethylenediamine tetramethylene phosphonic acid) and 47% of sodium nitrate.
And adding the ferric nitrate, the tin chloride and the sodium nitrate into a nitric acid aqueous solution, uniformly mixing, then adding the DTPA and the EDTMP, and uniformly mixing and stirring to obtain the tin stripping solution.
Example 8
1000kg of 85wt% nitric acid aqueous solution, 120kg of ferric nitrate and 31kg of stabilizer are used for preparing the tin stripping solution. Wherein the stabilizer consists of tin chloride, diethyltriaminepentaacetic acid (DTPA), EDTMP (ethylenediamine tetramethylene phosphonic acid) and sodium nitrate, and the content of each component in the stabilizer is (wt%) based on 100 percent of the stabilizer: 15% of stannic chloride, 15% of diethyltriamine pentaacetic acid (DTPA), 20% of EDTMP (ethylenediamine tetramethylene phosphonic acid) and 50% of sodium nitrate.
And adding the ferric nitrate, the tin chloride and the sodium nitrate into a nitric acid aqueous solution, uniformly mixing, then adding the DTPA and the EDTMP, and uniformly mixing and stirring to obtain the tin stripping solution.
Example 9
1000kg of 85wt% nitric acid aqueous solution, 120kg of ferric nitrate and 31kg of stabilizer are used for preparing the tin stripping solution. Wherein the stabilizer consists of tin chloride, diethyltriaminepentaacetic acid (DTPA), EDTMP (ethylenediamine tetramethylene phosphonic acid) and sodium nitrate, and the content of each component in the stabilizer is (wt%) based on 100 percent of the stabilizer: 10% of stannic chloride, 5% of diethyl triaminepentaacetic acid (DTPA), 25% of EDTMP (ethylenediamine tetramethylene phosphonic acid) and 60% of sodium nitrate.
And adding the ferric nitrate, the tin chloride and the sodium nitrate into a nitric acid aqueous solution, uniformly mixing, then adding the DTPA and the EDTMP, and uniformly mixing and stirring to obtain the tin stripping solution.
Example 10
A solder stripping solution was prepared as in example 1, except that: EDTMP (ethylenediamine tetramethylene phosphonic acid) in the stabilizer was replaced by ATMP (aminotrimethylene phosphonic acid).
Example 11
A solder stripping solution was prepared as in example 1, except that: EDTMP (ethylenediamine tetramethylene phosphonic acid) in the stabilizer was replaced by HEDP (hydroxyethylidene diphosphonic acid).
Comparative example 1
A solder stripping solution was prepared as in example 1, except that: no stabilizer is contained.
Comparative example 2
A solder stripping solution was prepared as in example 1, except that: the stabilizer consists of tin chloride, diethyl triaminepentaacetic acid (DTPA) and sodium nitrate, and the content of each component in the stabilizer is (wt%) based on 100% of the stabilizer: 12.7 percent of stannic chloride, 27.3 percent of diethyl triaminepentaacetic acid (DTPA) and 60 percent of sodium nitrate.
Comparative example 3
A solder stripping solution was prepared as in example 1, except that: the stabilizer comprises the following components in percentage by weight: 12.7% of stannic chloride, 10.6% of acetic acid, 23.6% of phosphoric acid and 53.1% of sodium nitrate.
Comparative example 4
A solder stripping solution was prepared as in example 1, except that: the dosage of the ferric nitrate is 250kg, and the dosage of the stabilizing agent is 76 kg.
Application example
The tin stripping solution obtained by the invention can be used for stripping tin of float glass, and the tin stripping treatment method comprises the following steps: the float glass obtained by the tin bath forming and annealing treatment is uniformly sprayed with the tin stripping solution or directly soaked in the tin stripping solution for treatment for 5-10min, and then the tin stripping solution on the surface of the glass is washed clean by clear water.
In order to verify the tin stripping effect of the tin stripping liquid, the tin stripping time, the corrosion performance, the light transmittance, the color and other performances of the tin stripping liquid after tin stripping are tested, and the method comprises the following steps:
the float glass obtained by the tin bath forming and annealing treatment is taken and soaked in the tin stripping liquid prepared in the embodiment and the comparative example respectively for treatment, the surface of the glass is detected to have the five-color phenomenon at variable time, the tin stripping is finished when the five-color phenomenon disappears, and the time from the beginning of soaking to the disappearance of the five-color effect is recorded as the tin stripping time. After the tin stripping is finished, the color and the light transmittance of the float glass treated by the tin stripping solution of the embodiment 1-11 have no obvious change, the glass is transparent and has high light transmittance, the surface five-color phenomenon disappears, and no color spots exist; in contrast, in the glasses treated by the tin stripping solutions of comparative examples 1 to 4, because of the change of the stabilizer or the components of the tin stripping solution, the color and the light transmittance of the glass are greatly influenced, the color of the glass changes, the light transmittance is obviously reduced, and although the five-color phenomenon on the surface of the glass disappears, a large number of color spots appear on the surface of the glass, which is caused by the non-uniformity of the tin stripping solution.
In addition, the corrosion degree and the light transmittance of the glass after the tin stripping treatment are tested, and the microetching rate is determined by the following method: taking 10cm 15cm double-layer glass (tin surface facing outwards), placing in a 110 ℃ oven, drying for 10min, taking out, placing in a drying oven, cooling to room temperature, weighing W1(g) In that respect After adding the tin stripping liquid, taking out the sample after passing through a drying section, placing the sample in a drying oven at 110 ℃ for drying for 10min, placing the sample in the drying oven for cooling to room temperature, weighing W2(g)。
Etch rate calculation (um) = (W)1-W2)/(8.92* 300）*10000
And testing the light transmittance of the glass before and after tin stripping by using a light transmittance tester.
The performance data of the tin stripping solutions of the examples and comparative examples are shown in table 1 below:
using the tin stripping solution of example 1 of the present invention, the formed float glass tableware plate was tin-stripped according to the above tin stripping method, and photographs of the tableware before and after the treatment are shown in FIGS. 1 and 2. It can be seen from the figure that the glass five-color phenomenon disappears after the tin stripping liquid treatment, and the color, the pattern, the light transmittance and the like of the glass are not obviously influenced.
Claims (8)
1. A float glass tin stripping solution is characterized in that: the stabilizer consists of a nitric acid aqueous solution, ferric nitrate and a stabilizer, wherein the concentration of the nitric acid aqueous solution is 67.5-98wt%, the mass percentage of the ferric nitrate in the nitric acid aqueous solution is 1-20%, and the mass percentage of the stabilizer in the nitric acid aqueous solution is 0.1-5%; the stabilizer consists of stannous salt, diethyl triaminepentaacetic acid, organic phosphonic acid and sodium nitrate, and comprises the following components in percentage by weight based on 100% of the stabilizer: 5-15% of stannous salt, 5-15% of diethyl triamino pentaacetic acid, 20-30% of organic phosphonic acid and 40-60% of sodium nitrate.
2. The float glass tin stripping solution as claimed in claim 1, wherein: the concentration of the nitric acid aqueous solution is 85-88wt%, the mass percentage of ferric nitrate in the nitric acid aqueous solution is 12-15%, and the mass percentage of the stabilizing agent in the nitric acid aqueous solution is 0.5-3%.
3. The float glass tin stripping solution as claimed in claim 1, wherein: based on 100% of the stabilizer, the stabilizer comprises the following components in percentage by weight: 12.7% of stannous salt, 10.6% of diethyl triaminepentaacetic acid, 23.6% of organic phosphonic acid and 53.1% of sodium nitrate.
4. The float glass tin stripping solution as claimed in claim 1 or 3, wherein: the stannous salt is stannic chloride or stannic nitrate, and the organic phosphonic acid is amino trimethylene phosphonic acid, hydroxy ethylidene diphosphonic acid or ethylene diamine tetramethylene phosphonic acid.
5. A method for removing tin on the surface of float glass is characterized in that: carrying out surface tin stripping treatment on float glass by using the float glass tin stripping liquid as defined in any one of claims 1 to 4.
6. The method of stripping tin from a surface of a float glass according to claim 5, wherein: and (3) coating the float glass tin stripping solution on the surface of the float glass to strip tin, or soaking the float glass into the float glass tin stripping solution to strip tin.
7. The method of stripping tin from a surface of a float glass according to claim 6, wherein: the tin stripping time is 5-10 min.
8. The method of stripping tin from a surface of a float glass according to claim 5, wherein: the float glass is obtained after tin bath forming and annealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811007580.1A CN108975661B (en) | 2018-08-31 | 2018-08-31 | Tin stripping liquid for float glass and surface tin stripping method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811007580.1A CN108975661B (en) | 2018-08-31 | 2018-08-31 | Tin stripping liquid for float glass and surface tin stripping method |
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| CN108975661B true CN108975661B (en) | 2021-04-13 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4713144A (en) * | 1986-08-01 | 1987-12-15 | Ardrox Inc. | Composition and method for stripping films from printed circuit boards |
| CN101760743A (en) * | 2009-11-09 | 2010-06-30 | 广东奥美特集团有限公司 | Tin stripping liquid |
| CN102061477A (en) * | 2010-12-31 | 2011-05-18 | 深圳市格林美高新技术股份有限公司 | Solder removing liquid, preparation method and application thereof |
| CN105506631A (en) * | 2016-01-29 | 2016-04-20 | 江苏净拓环保科技有限公司 | PCB surface tin stripping solution |
| CN106946474A (en) * | 2017-04-10 | 2017-07-14 | 蚌埠玻璃工业设计研究院 | A kind of electronical display glues the online minimizing technology of tin with float flat glass |
| CN107881506A (en) * | 2017-11-21 | 2018-04-06 | 东莞市广华化工有限公司 | A kind of new-type stripping tin liquor |
-
2018
- 2018-08-31 CN CN201811007580.1A patent/CN108975661B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4713144A (en) * | 1986-08-01 | 1987-12-15 | Ardrox Inc. | Composition and method for stripping films from printed circuit boards |
| CN101760743A (en) * | 2009-11-09 | 2010-06-30 | 广东奥美特集团有限公司 | Tin stripping liquid |
| CN102061477A (en) * | 2010-12-31 | 2011-05-18 | 深圳市格林美高新技术股份有限公司 | Solder removing liquid, preparation method and application thereof |
| CN105506631A (en) * | 2016-01-29 | 2016-04-20 | 江苏净拓环保科技有限公司 | PCB surface tin stripping solution |
| CN106946474A (en) * | 2017-04-10 | 2017-07-14 | 蚌埠玻璃工业设计研究院 | A kind of electronical display glues the online minimizing technology of tin with float flat glass |
| CN107881506A (en) * | 2017-11-21 | 2018-04-06 | 东莞市广华化工有限公司 | A kind of new-type stripping tin liquor |
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| CN108975661A (en) | 2018-12-11 |
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