CN114031299A - Method for reducing hygroscopicity of glass powder - Google Patents
Method for reducing hygroscopicity of glass powder Download PDFInfo
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- CN114031299A CN114031299A CN202111495572.8A CN202111495572A CN114031299A CN 114031299 A CN114031299 A CN 114031299A CN 202111495572 A CN202111495572 A CN 202111495572A CN 114031299 A CN114031299 A CN 114031299A
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- glass powder
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- coating agent
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- 239000011521 glass Substances 0.000 title claims abstract description 135
- 239000000843 powder Substances 0.000 title claims abstract description 107
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000011248 coating agent Substances 0.000 claims abstract description 21
- 239000001856 Ethyl cellulose Substances 0.000 claims abstract description 7
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 claims abstract description 7
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229920001249 ethyl cellulose Polymers 0.000 claims abstract description 7
- 235000019325 ethyl cellulose Nutrition 0.000 claims abstract description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 12
- 238000010521 absorption reaction Methods 0.000 claims description 12
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 claims description 12
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 10
- 238000000498 ball milling Methods 0.000 claims description 9
- 238000003723 Smelting Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- 238000007873 sieving Methods 0.000 claims description 7
- 239000002893 slag Substances 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 239000011701 zinc Substances 0.000 claims description 7
- 229910052810 boron oxide Inorganic materials 0.000 claims description 6
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 claims description 6
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 claims description 6
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 235000012239 silicon dioxide Nutrition 0.000 claims description 6
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 6
- 239000011787 zinc oxide Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 229910000416 bismuth oxide Inorganic materials 0.000 claims description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000292 calcium oxide Substances 0.000 claims description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 3
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 2
- 238000010791 quenching Methods 0.000 claims description 2
- 230000000171 quenching effect Effects 0.000 claims description 2
- 229920006395 saturated elastomer Polymers 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 7
- 238000000926 separation method Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 229910052593 corundum Inorganic materials 0.000 description 3
- 239000010431 corundum Substances 0.000 description 3
- 238000007598 dipping method Methods 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000002419 bulk glass Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000009837 dry grinding Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000006060 molten glass Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C12/00—Powdered glass; Bead compositions
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/006—Surface treatment of glass, not in the form of fibres or filaments, by coating with materials of composite character
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/28—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2217/00—Coatings on glass
- C03C2217/40—Coatings comprising at least one inhomogeneous layer
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2217/00—Coatings on glass
- C03C2217/70—Properties of coatings
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Composite Materials (AREA)
- Glass Compositions (AREA)
Abstract
The invention discloses a method for reducing the hygroscopicity of glass powder, which is characterized in that a coating agent prepared from tetraethoxysilane and ethyl cellulose is used for modifying finished glass powder on the basis of the conventional glass powder preparation process, so that the hygroscopicity of the glass powder can be greatly reduced. The method is simple and is suitable for the glass powder which is easy to absorb moisture and hydrolyze, such as V-Ba-B-Zn system glass powder, Ba-Si-Ca-P system glass powder, Sn-P-Si system glass powder and the like. The coating agent is simple to prepare, low in cost and high in stability, and is not decomposed and ethyl cellulose dissolved in ethyl orthosilicate is not separated out under the condition of long time at 25-80 ℃; the moisture-proof effect of the glass powder treated by the coating agent is obviously improved, and the coating agent is completely decomposed and volatilized when the treated glass powder is sintered at the temperature of more than 500 ℃.
Description
Technical Field
The invention belongs to the technical field of powder material processing, and particularly relates to a method for effectively reducing the moisture absorption of glass powder, so that the moisture resistance of the glass powder can be kept for a long time.
Background
With the development of science and technology and times, the glass powder is widely applied to the fields of chemical industry, electronic components, food processing, mechanical manufacturing and the like by virtue of high transparency, large hardness, uniform particle size distribution, good dispersibility, easy dissolution with other components in organic systems such as resin, paint and the like, easy processing, good adhesion, certain acid resistance, alkali resistance and the like; because part of the glass powder is limited by the glass system, the prepared glass powder has higher moisture absorption speed and is very easy to be hydrolyzed, thereby losing the original excellent characteristics of the glass powder. The V-Ba-B-Zn system glass powder, the Ba-Si-Ca-P system glass powder and the Sn-P-Si system glass powder are widely applied to thick film circuits, but the glass powder is easy to absorb moisture and then is hydrolyzed, so that the performance of the glass powder is changed, the quality of the whole thick film circuit is influenced, and a method for reducing the moisture absorption of the glass powder is required to be found.
Disclosure of Invention
The invention aims to provide a method for reducing the hygroscopicity of glass powder, thereby greatly reducing the influence of moisture on the characteristics of the glass powder.
Aiming at the purposes, the technical scheme adopted by the invention comprises the following steps:
1. at normal temperature, adding excessive ethyl cellulose into ethyl orthosilicate, continuously stirring until the solution is saturated, and then sieving the solution by using a stainless steel screen to obtain the coating agent.
2. Mixing the glass powder which is easy to absorb moisture and hydrolyze according to the formula composition, then mixing, smelting after mixing uniformly, quenching the smelted glass liquid by using a pair roller machine, ball-milling the cooled glass slag, sieving to obtain glass powder, finally soaking the glass powder in a coating agent, then taking out and drying.
In the step 1, the glass powder is soaked in the coating agent for 20-24 hours.
In the step 2, the glass powder which is easy to absorb moisture and hydrolyze is any one of V-Ba-B-Zn system glass powder, Ba-Si-Ca-P system glass powder, Sn-P-Si system glass powder and the like. Wherein the V-Ba-B-Zn system glass powder comprises 35-50 wt% of vanadium pentoxide, 5-11 wt% of barium oxide, 6-10 wt% of boron oxide, 25-40 wt% of zinc oxide, 1-3 wt% of aluminum oxide and 2-7 wt% of bismuth oxide; the Ba-Si-Ca-P glass powder comprises, by weight, 7% -15% of barium oxide, 20% -45% of silicon dioxide, 7% -15% of calcium oxide, 15% -30% of phosphorus pentoxide, 10% -18% of zinc oxide and 1% -3% of zirconium oxide; the Sn-P-Si system glass powder comprises, by weight, 25% -40% of tin dioxide, 40% -60% of phosphorus pentoxide, 7% -13% of silicon dioxide, 0.5% -2.5% of aluminum oxide and 1% -5% of boron oxide.
7. The method of reducing moisture absorption of glass frit according to claim 1, wherein: the smelting temperature is 900-1250 ℃, and the heat preservation time is 20-60 minutes.
8. The method of reducing moisture absorption of glass frit according to claim 1, wherein: and ball-milling the cooled glass slag until the granularity D50 is less than 2 mu m, and sieving by using a 80-mesh stainless steel sieve to separate the ball material.
The invention has the following beneficial effects:
the coating agent is simple to prepare, low in cost and high in stability, and is not decomposed and ethyl cellulose dissolved in ethyl orthosilicate is not separated out under the condition of long time at 25-80 ℃; the moisture-proof effect of the glass powder treated by the coating agent is obviously improved, and the treated glass powder is completely decomposed and volatilized when being sintered at the temperature of more than 500 ℃, so that metal salt is not remained, the performance of the glass powder is not influenced, and the coating agent is suitable for the moisture-absorbing and easily-hydrolyzed glass powder for thick film circuits such as V-Ba-B-Zn system glass powder, Ba-Si-Ca-P system glass powder, Sn-P-Si system glass powder and the like, so that the quality of the whole thick film circuit is ensured.
Detailed description of the preferred embodiments
The present invention will be described in further detail with reference to examples, but the scope of the present invention is not limited to these examples.
Example 1
1. Weighing 3kg of ethyl orthosilicate in a 5L stainless steel barrel, then pouring 1kg of ethyl cellulose into the ethyl orthosilicate, continuously stirring for 2 hours at normal temperature by using a stirring rod, and then sieving the solution by using an 80-mesh stainless steel sieve to remove excessive undissolved ethyl cellulose to obtain the coating agent.
2. The glass powder comprises the following components in percentage by weight: mixing vanadium pentoxide 42%, barium oxide 6%, boron oxide 6%, zinc oxide 38%, aluminum oxide 1% and bismuth oxide 7% by weight for 2kg, pouring into a 5L turnover barrel, covering the barrel cover tightly, placing the turnover barrel on an eight-roller ball mill, and mixing the raw materials until the raw materials are uniform without obvious color difference. Pouring the uniformly mixed raw materials into a 2L platinum crucible, and smelting by using a silicon carbide rod resistance furnace at 1150 ℃ for 30 minutes; opening the double-roller mill, switching on circulating water, adjusting the distance between the two rollers to be 0.5mm, rotating at the speed of 25 r/min, slowly and uniformly pouring the completely molten glass liquid between the two rollers of the double-roller mill, after the glass liquid is completely poured, waiting for the quenched glass slag to return to room temperature, carrying out dry grinding on the glass slag by using a 5L corundum ball milling tank, adding zirconia balls with the diameters of 5mm, 10mm and 15mm into the corundum ball milling tank according to the weight ratio of 5:3:2, completely adding the glass slag, and placing the ball milling tank on an eight-roller ball mill until the granularity D50 of the glass powder is less than 2 mu m; and (3) after ball milling is finished, performing ball material separation on powder in the corundum ball milling tank by using a stainless steel screen of 80 meshes, putting glass powder into the coating agent obtained in the step (1), soaking at normal temperature for 20 hours, taking out, drying by using an oven at 80 ℃, and drying for 10 hours to obtain the treated glass powder.
And 6 parts of the treated glass powder is sampled after testing the moisture content, each part is 50g and is marked as No. 1-6 glass powder, the glass powder is placed in a constant temperature and humidity room with the temperature of 25 ℃ and the humidity of 35% RH, the placing time of each part is 0 hour, 3 hours, 6 hours, 12 hours, 24 hours and 48 hours respectively, then the glass powder is taken out and the respective moisture content is tested, and the test results are shown in Table 1.
TABLE 1
| Name (R) | No. 1 glass powder | 2# glass powder | 3# glass powder | 4# glass powder | 5# glass powder | 6# glass powder |
| Moisture (%) | 0.02 | 0.03 | 0.07 | 0.08 | 0.11 | 0.14 |
| Standing time (h) | 0 | 3 | 6 | 12 | 24 | 48 |
Comparative example 1
In example 1, the glass frit obtained after the separation of the pellets was not subjected to the dipping and drying with the coating agent, the other steps were the same as those of example 1, the obtained glass frit was labeled as 7# to 12# glass frit, and the moisture test results of each glass frit are shown in table 2.
TABLE 2
| Name (R) | 7# glass powder | 8# glass powder | 9# glass powder | No. 10 glass powder | 11# glass powder | 12# glass powder |
| Moisture (%) | 0.11 | 0.31 | 0.77 | 1.94 | 4.56 | 9.01 |
| Standing time (h) | 0 | 3 | 6 | 12 | 24 | 48 |
As can be seen from the data in tables 1 and 2, the moisture resistance of the V-Ba-B-Zn bulk glass powder treated by the coating agent is obviously improved.
Example 2
In the present example, the composition in weight percentage of the Ba-Si-Ca-P system glass powder is: the method comprises the following steps of mixing 12% of barium oxide, 40% of silicon dioxide, 7% of calcium oxide, 27% of phosphorus pentoxide, 13% of zinc oxide and 1% of zirconium oxide for 2kg, smelting at 1250 ℃, keeping the temperature for 30 minutes, and obtaining treated glass powder labeled 13# to 18# glass powder in the same manner as in example 1, wherein the test moisture results of the glass powders are shown in Table 3.
TABLE 3
| Name (R) | 13# glass powder | 14# glass powder | 15# glass powder | 16# glass powder | 17# glass powder | 18# glass powder |
| Moisture (%) | 0.04 | 0.06 | 0.08 | 0.10 | 0.11 | 0.14 |
| Standing time (h) | 0 | 3 | 6 | 12 | 24 | 48 |
Comparative example 2
In example 2, the glass frit obtained after the separation of the pellets was not subjected to the dipping and drying with the coating agent, the other steps were the same as those of example 2, the obtained glass frit was labeled as 19# to 24# glass frit, and the moisture test results of each glass frit are shown in table 4.
TABLE 4
| Name (R) | 19# glass powder | 20# glass powder | 21# glass powder | 22# glass powder | 23# glass powder | 24# glass powder |
| Moisture (%) | 0.12 | 0.26 | 0.51 | 1.92 | 4.50 | 8.92 |
| Standing time (h) | 0 | 3 | 6 | 12 | 24 | 48 |
As can be seen from the data in tables 3 and 4, the moisture resistance of the Ba-Si-Ca-p system glass powder treated by the coating agent is significantly improved.
Example 3
In the embodiment, the Sn-P-Si system glass powder comprises the following components in percentage by weight: the method comprises the following steps of mixing 35% of tin dioxide, 55% of phosphorus pentoxide, 8% of silicon dioxide, 0.5% of aluminum oxide and 1.5% of boron oxide for 2kg, smelting at 900 ℃, keeping the temperature for 40 minutes, and obtaining the treated glass powder marked as 25# to 30# glass powder by the same steps as the example 1, wherein the test moisture results of the glass powders are shown in a table 5.
TABLE 5
| Name (R) | 25# glass powder | 26# glass powder | 27# glass powder | 28# glass powder | 29# glass powder | 30# glass powder |
| Moisture (%) | 0.02 | 0.05 | 0.06 | 0.10 | 0.14 | 0.21 |
| Standing time (h) | 0 | 3 | 6 | 12 | 24 | 48 |
Comparative example 3
In example 3, the glass frit obtained after the separation of the pellets was not subjected to the dipping and drying with the coating agent, the other steps were the same as those of example 3, the obtained glass frit was labeled as 31# to 36# glass frit, and the moisture test results of each glass frit are shown in table 6.
TABLE 6
As can be seen from the data in tables 5 and 6, the moisture resistance of the Sn-P-Si bulk glass powder treated by the coating agent is significantly improved.
Claims (8)
1. A method for reducing the hygroscopicity of glass powder, which is characterized by comprising the following steps:
(1) adding excessive ethyl cellulose into tetraethoxysilane at normal temperature, continuously stirring until the solution is saturated, and then sieving the solution by using a stainless steel screen to obtain a coating agent;
(2) mixing the glass powder which is easy to absorb moisture and hydrolyze according to the formula composition, then mixing, smelting after mixing uniformly, quenching the smelted glass liquid by using a pair roller machine, ball-milling the cooled glass slag, sieving to obtain glass powder, finally soaking the glass powder in a coating agent, then taking out and drying.
2. The method of reducing moisture absorption of glass frit according to claim 1, wherein: the glass powder is soaked in the coating agent for 20-24 hours.
3. The method for reducing moisture absorption of glass frit according to claim 1 or 2, wherein: the glass powder which is easy to absorb moisture and hydrolyze is any one of V-Ba-B-Zn system glass powder, Ba-Si-Ca-P system glass powder and Sn-P-Si system glass powder.
4. A method of reducing the moisture absorption of glass frits as claimed in claim 3 wherein: the V-Ba-B-Zn system glass powder comprises, by weight, 35-50% of vanadium pentoxide, 5-11% of barium oxide, 6-10% of boron oxide, 25-40% of zinc oxide, 1-3% of aluminum oxide and 2-7% of bismuth oxide.
5. A method of reducing the moisture absorption of glass frits as claimed in claim 3 wherein: the Ba-Si-Ca-P glass powder comprises, by weight, 7% -15% of barium oxide, 20% -45% of silicon dioxide, 7% -15% of calcium oxide, 15% -30% of phosphorus pentoxide, 10% -18% of zinc oxide and 1% -3% of zirconium oxide.
6. A method of reducing the moisture absorption of glass frits as claimed in claim 3 wherein: the Sn-P-Si system glass powder comprises, by weight, 25% -40% of tin dioxide, 40% -60% of phosphorus pentoxide, 7% -13% of silicon dioxide, 0.5% -2.5% of aluminum oxide and 1% -5% of boron oxide.
7. The method of reducing moisture absorption of glass frit according to claim 1, wherein: the smelting temperature is 900-1250 ℃, and the heat preservation time is 20-60 minutes.
8. The method of reducing moisture absorption of glass frit according to claim 1, wherein: and ball-milling the cooled glass slag until the granularity D50 is less than 2 mu m, and sieving by using a 80-mesh stainless steel sieve to separate the ball material.
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