CN110937824A - 化学强化玻璃及其制备方法和应用 - Google Patents
化学强化玻璃及其制备方法和应用 Download PDFInfo
- Publication number
- CN110937824A CN110937824A CN201911236354.5A CN201911236354A CN110937824A CN 110937824 A CN110937824 A CN 110937824A CN 201911236354 A CN201911236354 A CN 201911236354A CN 110937824 A CN110937824 A CN 110937824A
- Authority
- CN
- China
- Prior art keywords
- glass
- sodium
- ion exchange
- chemically strengthened
- lithium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 239000005345 chemically strengthened glass Substances 0.000 title claims abstract description 64
- 238000002360 preparation method Methods 0.000 title abstract description 14
- 239000011521 glass Substances 0.000 claims abstract description 133
- 238000005342 ion exchange Methods 0.000 claims abstract description 78
- VVNXEADCOVSAER-UHFFFAOYSA-N lithium sodium Chemical group [Li].[Na] VVNXEADCOVSAER-UHFFFAOYSA-N 0.000 claims abstract description 53
- BITYAPCSNKJESK-UHFFFAOYSA-N potassiosodium Chemical group [Na].[K] BITYAPCSNKJESK-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 239000010410 layer Substances 0.000 claims description 89
- 239000011734 sodium Substances 0.000 claims description 27
- 238000005728 strengthening Methods 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 21
- 239000002344 surface layer Substances 0.000 claims description 21
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 19
- 230000008569 process Effects 0.000 claims description 14
- 239000002994 raw material Substances 0.000 claims description 14
- FUJCRWPEOMXPAD-UHFFFAOYSA-N Li2O Inorganic materials [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 claims description 12
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 12
- 229910052593 corundum Inorganic materials 0.000 claims description 12
- XUCJHNOBJLKZNU-UHFFFAOYSA-M dilithium;hydroxide Chemical compound [Li+].[Li+].[OH-] XUCJHNOBJLKZNU-UHFFFAOYSA-M 0.000 claims description 12
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 12
- 238000003426 chemical strengthening reaction Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- 238000000137 annealing Methods 0.000 claims description 8
- 229910052708 sodium Inorganic materials 0.000 claims description 8
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 7
- 229910052681 coesite Inorganic materials 0.000 claims description 6
- 229910052906 cristobalite Inorganic materials 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 229910052682 stishovite Inorganic materials 0.000 claims description 6
- 229910052905 tridymite Inorganic materials 0.000 claims description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 5
- 229910052744 lithium Inorganic materials 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 229910001414 potassium ion Inorganic materials 0.000 claims description 4
- 229910001415 sodium ion Inorganic materials 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 claims 1
- 239000012530 fluid Substances 0.000 claims 1
- 238000005452 bending Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 239000000523 sample Substances 0.000 description 21
- 238000012360 testing method Methods 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 11
- 229910052783 alkali metal Inorganic materials 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 4
- 229910052700 potassium Inorganic materials 0.000 description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000013001 point bending Methods 0.000 description 3
- 239000011591 potassium Substances 0.000 description 3
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 3
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 3
- 239000006058 strengthened glass Substances 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 239000005341 toughened glass Substances 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 244000137852 Petrea volubilis Species 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004453 electron probe microanalysis Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- 241000084490 Esenbeckia delta Species 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- 229910001413 alkali metal ion Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000007688 edging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000006060 molten glass Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- 239000004323 potassium nitrate Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- C03C21/00—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
- C03C21/001—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions
- C03C21/002—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions to perform ion-exchange between alkali ions
-
- 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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
- C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Surface Treatment Of Glass (AREA)
- Glass Compositions (AREA)
Abstract
Description
Claims (14)
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CN110937824A true CN110937824A (zh) | 2020-03-31 |
CN110937824B CN110937824B (zh) | 2022-04-19 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111484245A (zh) * | 2020-04-30 | 2020-08-04 | 四川旭虹光电科技有限公司 | 一种高强度、低介电常数低介电损耗玻璃及其制备和应用 |
CN113945598A (zh) * | 2021-09-07 | 2022-01-18 | 河北光兴半导体技术有限公司 | 一种玻璃强化离子交换效率的评价方法 |
CN115448594A (zh) * | 2022-09-16 | 2022-12-09 | 河南旭阳光电科技有限公司 | 玻璃及其制备方法和应用 |
CN115925281A (zh) * | 2022-12-27 | 2023-04-07 | 诚玺电子(湖北)有限公司 | 一种玻璃钢化膜的生产工艺 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102149649A (zh) * | 2008-08-08 | 2011-08-10 | 康宁股份有限公司 | 强化的玻璃制品及其制造方法 |
CN103068759A (zh) * | 2010-08-26 | 2013-04-24 | 康宁股份有限公司 | 强化玻璃的二步法 |
US20160214889A1 (en) * | 2013-10-14 | 2016-07-28 | Corning Incorporated | Ion exchange processes and chemically strengthened glass substrates resulting therefrom |
CN106746741A (zh) * | 2014-12-23 | 2017-05-31 | 中国南玻集团股份有限公司 | 铝硅酸盐玻璃、铝硅酸盐玻璃的强化方法及强化玻璃 |
CN107663032A (zh) * | 2017-09-18 | 2018-02-06 | 彩虹集团(邵阳)特种玻璃有限公司 | 一种用于电子装置的化学强化玻璃及其制备方法 |
CN108726876A (zh) * | 2018-06-11 | 2018-11-02 | 中国南玻集团股份有限公司 | 可离子交换的铝乳浊玻璃及其制备方法 |
CN110002744A (zh) * | 2019-04-30 | 2019-07-12 | 四川旭虹光电科技有限公司 | 一种高抗冲击性玻璃及其制备方法 |
CN110482855A (zh) * | 2019-06-11 | 2019-11-22 | 中国南玻集团股份有限公司 | 铝硅酸盐玻璃及制备方法 |
-
2019
- 2019-12-05 CN CN201911236354.5A patent/CN110937824B/zh active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102149649A (zh) * | 2008-08-08 | 2011-08-10 | 康宁股份有限公司 | 强化的玻璃制品及其制造方法 |
CN103068759A (zh) * | 2010-08-26 | 2013-04-24 | 康宁股份有限公司 | 强化玻璃的二步法 |
US20160214889A1 (en) * | 2013-10-14 | 2016-07-28 | Corning Incorporated | Ion exchange processes and chemically strengthened glass substrates resulting therefrom |
CN106746741A (zh) * | 2014-12-23 | 2017-05-31 | 中国南玻集团股份有限公司 | 铝硅酸盐玻璃、铝硅酸盐玻璃的强化方法及强化玻璃 |
CN107663032A (zh) * | 2017-09-18 | 2018-02-06 | 彩虹集团(邵阳)特种玻璃有限公司 | 一种用于电子装置的化学强化玻璃及其制备方法 |
CN108726876A (zh) * | 2018-06-11 | 2018-11-02 | 中国南玻集团股份有限公司 | 可离子交换的铝乳浊玻璃及其制备方法 |
CN110002744A (zh) * | 2019-04-30 | 2019-07-12 | 四川旭虹光电科技有限公司 | 一种高抗冲击性玻璃及其制备方法 |
CN110482855A (zh) * | 2019-06-11 | 2019-11-22 | 中国南玻集团股份有限公司 | 铝硅酸盐玻璃及制备方法 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111484245A (zh) * | 2020-04-30 | 2020-08-04 | 四川旭虹光电科技有限公司 | 一种高强度、低介电常数低介电损耗玻璃及其制备和应用 |
CN113945598A (zh) * | 2021-09-07 | 2022-01-18 | 河北光兴半导体技术有限公司 | 一种玻璃强化离子交换效率的评价方法 |
CN115448594A (zh) * | 2022-09-16 | 2022-12-09 | 河南旭阳光电科技有限公司 | 玻璃及其制备方法和应用 |
CN115448594B (zh) * | 2022-09-16 | 2023-11-28 | 河南旭阳光电科技有限公司 | 玻璃及其制备方法和应用 |
CN115925281A (zh) * | 2022-12-27 | 2023-04-07 | 诚玺电子(湖北)有限公司 | 一种玻璃钢化膜的生产工艺 |
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