CN105645763A - Composition for silicate glass, silicate glass, and preparation method and application of silicate glass - Google Patents
Composition for silicate glass, silicate glass, and preparation method and application of silicate glass Download PDFInfo
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- CN105645763A CN105645763A CN201511021192.5A CN201511021192A CN105645763A CN 105645763 A CN105645763 A CN 105645763A CN 201511021192 A CN201511021192 A CN 201511021192A CN 105645763 A CN105645763 A CN 105645763A
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- 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
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
- C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
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Abstract
The invention relates to the field of glass, and discloses a composition for silicate glass, the silicate glass, and a preparation method and the application of the silicate glass. The composition for the silicate glass provided by the invention contains SiO2, Al2O3, B2O3, Na2O, K2O, MgO, CaO and SrO. The silicate glass prepared by utilizing the composition for the silicate glass has few bubbles, moderate density (between 2.45 and 2.48 g/cm<3>), high transmittance (between 1.49 and 1.5) and high light transparency (between 90 and 92 percent), can replace acrylic plastics and can avoid the design of structural components and corresponding space of a panel manufacturer; when the silicate glass serves as a light guide plate glass for an LCD display device, the thickness of the silicate glass can be reduced below 2 mm, so that an ultrathin thickness design of the LCD display device can be realized.
Description
Technical field
The present invention relates to glass art, particularly, relate to a kind of composition, silicate for silicate glassGlass and its preparation method and application.
Background technology
Along with the development of Display Technique, electronic product is towards intelligence, high definition, large scale, ultra-thin striding forward,Cause relevant LCD Display Technique, OLED Display Technique, LTPS Display Technique, oxide to show skillBetween art, competition is fiercer. Wherein, OLED shows and is developed rapidly, saturated in brightness, colorDegree, dynamically, the aspect such as slimming shows and brought huge challenge to LCD. Compared with showing with LCD,OLED shows does not need backlight module, and therefore aspect slimming, OLED shows the very large advantage that occupied,From certain viewpoint of measures, the competition of two kinds is slimming competition to a great extent.
In order to contend with in high-end market and OLED demonstration, the ultrathin outward appearance of LCD panel vendor's needsSolution, solve the problem that LCD shows thickness, and in backlight module, the thinning of LGP is crucial.Popular ultra-thin LCD TV on the market, except television manufacturer adopts the fuselage material and the worker that upgradeOutside skill, more crucial factor adopts extra-thin liquid crystal panel exactly. And these novel liquid crystal panelsWhy can become thinner, very crucial effect has been played in the improvement of technology for making glass. NovelGlass material can use in liquid crystal panel in a large number, and it can be in the situation that ensures firm degree and performanceThe thickness of lower reduction glass substrate and associated components, for liquid crystal panel and TV " weight reducing " are vacateed moreMany spaces.
At present, the main material of the LGP of LCD backlight is acrylic plastics, namely acrylic,Acrylic thickness is generally 3-5mm, and this makes designer be difficult to reduce television set thickness again. Therefore, grindSend out can to substitute acrylic and can make the leaded light sheet material of the Novel LCD backlight board of LGP thinning a kind ofMaterial, is of great practical significance.
Summary of the invention
The object of the invention is, in order to overcome above-mentioned defect of the prior art, provides a kind of silicate glassWith composition, silicate glass and its preparation method and application.
The present inventor surprisingly finds under study for action, utilizes and contains SiO2、Al2O3、B2O3、Na2O、K2The silicate glass of O, MgO, CaO and SrO is prepared silicate glass with composition, can prepareObtain hard tens times of hardness ratio acrylic plastics, thermal coefficient of expansion than plastics are low by 90%, transmissivity is high,Can instead of propylene acid plastics and can allow panel vendor remove the silicon of the design of structure member and corresponding space fromSilicate glass, while using LGP glass as LCD display part, its thickness can be down to below 2mm,Make LCD display part in Thickness Design, realize ultrathin.
Therefore, to achieve these goals, first aspect, the invention provides a kind of silicate glass and usesComposition, said composition contains SiO2、Al2O3、B2O3、Na2O、K2O, MgO, CaO and SrO.
Second aspect, the invention provides a kind of method of preparing silicate glass, and the method comprises basisThe described silicate glass of invention carries out melt process, annealing in process and machining place successively with compositionReason.
The third aspect, the invention provides the silicate glass that said method prepares.
Fourth aspect, the invention provides silicate glass of the present invention composition or glassy silicateGlass is in the application of preparing in display.
Silicate glass of the present invention contains SiO with composition2、Al2O3、B2O3、Na2O、K2O、MgO, CaO and SrO, the silicate glass that utilizes this silicate glass to prepare with composition is hardDegree than hard tens times of acrylic plastics, thermal coefficient of expansion are lower by 90% than plastics, fusion temperature is suitable (1450-1600 DEG C), less, the density of bubble is 2.45-2.48g/cm3, refractive index is high (at 1.49-1.5Between), light transmission rate high (between 90-92%), can instead of propylene acid plastics and can allow panel factoryBusiness removes the design of structure member and corresponding space from, while using LGP glass as LCD display part,Its thickness can be down to below 2mm, makes LCD display part in Thickness Design, realize ultrathin.
Other features and advantages of the present invention are described in detail the detailed description of the invention part subsequently.
Detailed description of the invention
Below the specific embodiment of the present invention is elaborated. Should be understood that, retouch in this placeThe detailed description of the invention of stating only, for description and interpretation the present invention, is not limited to the present invention.
First aspect, the invention provides a kind of silicate glass composition, and said composition contains SiO2、Al2O3、B2O3、Na2O、K2O, MgO, CaO and SrO.
In composition of the present invention, the present inventor further finds under study for action, with said compositionWeight be benchmark, the SiO containing in composition2、Al2O3、B2O3、Na2O、K2O、MgO、CaO and SrO be respectively 55-65wt%, 0.1-5wt%, 5-15wt%, 9-15wt%, 0.1-5wt%,When 0.1-5wt%, 4-12wt%, 0.1-5wt%, can improve and utilize silicate glass composition to prepareThe combination property of the silicate glass obtaining, the density that makes the silicate glass obtaining is 2.45-2.48g/cm3, refractive index is 1.49-1.5, light transmission rate is 90-92%. Therefore, under preferable case, with thisThe weight of composition is benchmark, SiO2Content be 55-65wt%, Al2O3Content be 0.1-5wt%,B2O3Content be 5-15wt%, Na2The content of O is 9-15wt%, K2The content of O is 0.1-5wt%,The content of MgO is 0.1-5wt%, and the content of CaO is 4-12wt%, and the content of SrO is 0.1-5wt%.
In composition of the present invention, SiO2The composition that forms glass skeleton, SiO2The raising of content canImprove glass machinery intensity, reduce the dielectric properties of glass, but the high temperature viscosity of glass is also increased.SiO2Lower being difficult for of content forms glass, and strain point is declined, and the coefficient of expansion increases, under acid resistanceFall, alkali resistance declines. Consider fusion temperature, crystallization ceiling temperature, glass swelling coefficient, machinery by forceThe composite factors such as degree, therefore, taking the weight of said composition as benchmark, SiO2Content be 55-65wt%,More preferably 59-62wt%.
In composition of the present invention, Al2O3Contribute to improve the mechanical performance of glass, but Al2O3ContentToo high, the easy crystallization of glass, is difficult to found. Therefore, consider, under preferable case, with this combinationThe weight of thing is benchmark, Al2O3Content be 0.1-5wt%, more preferably 2-4wt%.
In composition of the present invention, B2O3Can reduce glass viscosity and fragility, increase glass intensity andLight transmission rate. Consider, under preferable case, taking the weight of said composition as benchmark, B2O3ContentFor 5-15wt%, more preferably 7-10wt%.
In composition of the present invention, Na2O belongs to network outer body, plays fluxing action, makes glass meltingTemperature reduces, and regulates the coefficient of expansion of glass. Consider, under preferable case, with the weight of said compositionAmount is benchmark, Na2The content of O is 9-15wt%, more preferably 11-13wt%.
In composition of the present invention, K2O can reduce glass high temperature viscosity, makes meltbility and the one-tenth of glassShape property improves, and can also improve glass devitrification resistance. Consider, under preferable case, with said compositionWeight is benchmark, K2The content of O is 0.1-5wt%, more preferably 2-3wt%.
In composition of the present invention, MgO can reduce glass melting temperature, is conducive to founding of glass,Improve the stability of glass, suppress devitrification of glass tendency, improve elastic modelling quantity, exceed and a certain amount ofly can makeBecome glass density and the coefficient of expansion to increase, make glass generation devitrification. Therefore, consider preferable caseUnder, taking the weight of said composition as benchmark, the content of MgO is 0.1-5wt%, more preferably2-4wt％。
In composition of the present invention, CaO plays fluxing action, can also reduce crystallization tendency simultaneously, improvesThe chemical stability of glass and mechanical strength. But CaO too high levels can cause glass structure loose,Density declines. Therefore, consider, under preferable case, taking the weight of said composition as benchmark, CaOContent be 4-12wt%, more preferably 6-9wt%.
In composition of the present invention, SrO, as flux, can increase glass refraction, prevents glassThere is crystallization. If but content is too much, glass density can be too high, causes the quality of product overweight. CauseThis, consider, and under preferable case, taking the weight of said composition as benchmark, the content of SrO is0.1-5wt%, more preferably 1.5-3wt%.
In composition of the present invention, while utilizing it to prepare silicate glass, why can make silicateGlass has good combination property, mainly gives the credit to SiO in composition2、Al2O3、B2O3、Na2O、K2Mating reaction between O, MgO, CaO and SrO, each component of especially aforementioned certain content itBetween cooperatively interact.
In composition of the present invention, under preferable case, taking the weight of said composition as benchmark, SiO2ContainAmount is 59-62wt%, and/or
Al2O3Content be 2-4wt%, and/or
B2O3Content be 7-10wt%, and/or
Na2The content of O is 11-13wt%, and/or
K2The content of O is 2-3wt%, and/or
The content of MgO is 2-4wt%, and/or
The content of CaO is 6-9wt%, and/or
The content of SrO is 1.5-3wt%.
Further preferably, taking the weight of said composition as benchmark, SiO2Content be 59-62wt%,Al2O3Content be 2-4wt%, B2O3Content be 7-10wt%, Na2The content of O is 11-13wt%,K2The content of O is 2-3wt%, and the content of MgO is 2-4wt%, and the content of CaO is 6-9wt%, SrOContent be 1.5-3wt%.
Second aspect, the invention provides a kind of method of preparing silicate glass, and the method comprises basisThe silicate glass of invention carries out melt process, annealing in process and machining processes successively with composition.
In method of the present invention, refer to aforementioned corresponding for silicate glass with the concrete restriction of compositionContent description, does not repeat them here.
In method of the present invention, under preferable case, the condition of melt process comprises: temperature is 1450-1600DEG C, the time is 8-12h.
In method of the present invention, under preferable case, the condition of annealing in process comprises: temperature is 500-600DEG C, the time is 0.5-2h. Annealing in process can be in (stainless steel cast iron) grinding tool with reservation shapeCarry out, to obtain the glass with reservation shape.
In method of the present invention, for machining processes, there is no particular limitation, can be that this area is normalThe various machining modes of seeing, for example can cut for product that annealing in process is obtained, grind,Polishing etc. The product that machining processes is obtained obtains glassy silicate by washed with de-ionized water post-dryingGlass finished product.
The third aspect, the invention provides the silicate glass that said method prepares.
Under preferable case, silicate glass is controlled at aforementioned specific with the content of each component of compositionIn scope, can obtain density is 2.45-2.48g/cm3, refractive index is 1.49-1.5, light transmission rate isThe silicate glass of 90-92%.
Fourth aspect, the invention provides silicate glass composition or silicate glass and shows in preparationApplication in device. Under preferable case, display is LCD display, particularly, and can be for the preparation ofThe LGP glass of LCD display backlight.
Embodiment
Below will describe the present invention by embodiment. In following examples, as nothing is said especiallyBright, each material used all can be by commercially available, and if no special instructions, method used is this areaConventional method.
In following examples and comparative example, density is measured according to standard GB/T5432-2008, unitFor g/cm3。
The expansion coefficient of glass thread of 25-300 DEG C is measured according to standard A STME-228-2006, unitBe 10-7/℃。
Light transmission rate adopts ultraviolet-visible spectrophotometer to measure, and unit is %.
Refractive index adopts Abbe refractometer to measure.
Embodiment 1-6
According to weighing each component shown in table 1, mix, compound is poured in platinum-rhodium crucible, then carry outMelting is also used platinum rod to stir to discharge bubble. The glass metal melting is poured into stainless steel cast iron millIn tool, be configured as the block glassware of regulation, then glassware annealed in annealing furnace, closePower supply is cooling with stove. By glassware cut, grinding, polishing, then dry by washed with de-ionized waterClean also oven dry, makes silicate glass finished product. Respectively the various performances of each silicate glass finished product are carried outMeasure, the results are shown in Table 1.
Table 1
Embodiment 7-12
According to weighing each component shown in table 2, mix, compound is poured in platinum-rhodium crucible, then carry outMelting is also used platinum rod to stir to discharge bubble. The glass metal melting is poured into stainless steel cast iron millIn tool, be configured as the block glassware of regulation, then glassware annealed in annealing furnace, closePower supply is cooling with stove. By glassware cut, grinding, polishing, then dry by washed with de-ionized waterClean also oven dry, makes silicate glass finished product. Respectively the various performances of each silicate glass finished product are carried outMeasure, the results are shown in Table 2.
Comparative example 1-3
According to the method for embodiment 1, different, the performance measurement of compound composition and the product obtainingThe results are shown in Table 3.
Table 2
Table 3
By more known the data of table 1-2 and table 3, utilization of the present invention contains SiO2、Al2O3、B2O3、Na2O、K2The silicate glass that the silicate glass of O, MgO, CaO and SrO is prepared with composition,Density is 2.45-2.48g/cm3, refractive index is 1.49-1.5, light transmission rate is 90-92%, can substituteAcrylic plastics and can allow panel vendor remove the design of structure member and corresponding space from, aobvious as LCDWhile showing device LGP glass, its thickness can be down to below 2mm, makes LCD display part thickIn degree design, realize ultrathin.
More than describe the preferred embodiment of the present invention in detail, still, the present invention is not limited to above-mentioned realityExecute the detail in mode, within the scope of technical conceive of the present invention, can be to technical side of the present inventionCase is carried out multiple simple variant, and these simple variant all belong to protection scope of the present invention.
It should be noted that in addition each the concrete technology spy described in above-mentioned detailed description of the inventionLevy, in reconcilable situation, can combine by any suitable mode, for fear of needn'tThe repetition of wanting, the present invention is to the explanation no longer separately of various possible combinations.
In addition, between various embodiment of the present invention, also can be combined, as long as itsWithout prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (9)
1. a silicate glass composition, is characterized in that, said composition contains SiO2、Al2O3、B2O3、Na2O、K2O, MgO, CaO and SrO.
2. composition according to claim 1, wherein, taking the weight of said composition as benchmark,SiO2Content be 55-65wt%, Al2O3Content be 0.1-5wt%, B2O3Content be 5-15wt%,Na2The content of O is 9-15wt%, K2The content of O is 0.1-5wt%, and the content of MgO is 0.1-5wt%,The content of CaO is 4-12wt%, and the content of SrO is 0.1-5wt%.
3. composition according to claim 1, wherein, taking the weight of said composition as benchmark,SiO2Content be 59-62wt%, and/or
Al2O3Content be 2-4wt%, and/or
B2O3Content be 7-10wt%, and/or
Na2The content of O is 11-13wt%, and/or
K2The content of O is 2-3wt%, and/or
The content of MgO is 2-4wt%, and/or
The content of CaO is 6-9wt%, and/or
The content of SrO is 1.5-3wt%.
4. composition according to claim 3, wherein, taking the weight of said composition as benchmark,SiO2Content be 59-62wt%, Al2O3Content be 2-4wt%, B2O3Content be 7-10wt%,Na2The content of O is 11-13wt%, K2The content of O is 2-3wt%, and the content of MgO is 2-4wt%,The content of CaO is 6-9wt%, and the content of SrO is 1.5-3wt%.
5. a method of preparing silicate glass, is characterized in that, the method comprises claimSilicate glass in 1-4 described in any one with composition carry out successively melt process, annealing in process andMachining processes.
6. the silicate glass that method according to claim 5 prepares.
7. silicate glass according to claim 6, wherein, the density of this silicate glass is2.45-2.48g/cm3, refractive index is 1.49-1.5, light transmission rate is 90-92%.
8. composition or the claim 6 for silicate glass described in any one in claim 1-4Or silicate glass described in 7 is in the application of preparing in display.
9. application according to claim 8, wherein, described display is LCD display.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511021192.5A CN105645763A (en) | 2015-12-30 | 2015-12-30 | Composition for silicate glass, silicate glass, and preparation method and application of silicate glass |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201511021192.5A CN105645763A (en) | 2015-12-30 | 2015-12-30 | Composition for silicate glass, silicate glass, and preparation method and application of silicate glass |
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| CN105645763A true CN105645763A (en) | 2016-06-08 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02221137A (en) * | 1989-02-23 | 1990-09-04 | Asahi Glass Co Ltd | Easily moldable glass composition |
| WO2007094373A1 (en) * | 2006-02-14 | 2007-08-23 | Nippon Sheet Glass Company, Limited | Glass composition |
| CN101410333A (en) * | 2006-03-27 | 2009-04-15 | 旭硝子株式会社 | Glass-making process |
| CN103402937A (en) * | 2011-02-28 | 2013-11-20 | 旭硝子株式会社 | Tempered glass plate |
-
2015
- 2015-12-30 CN CN201511021192.5A patent/CN105645763A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02221137A (en) * | 1989-02-23 | 1990-09-04 | Asahi Glass Co Ltd | Easily moldable glass composition |
| WO2007094373A1 (en) * | 2006-02-14 | 2007-08-23 | Nippon Sheet Glass Company, Limited | Glass composition |
| CN101410333A (en) * | 2006-03-27 | 2009-04-15 | 旭硝子株式会社 | Glass-making process |
| CN103402937A (en) * | 2011-02-28 | 2013-11-20 | 旭硝子株式会社 | Tempered glass plate |
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Application publication date: 20160608 |
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