CN110655304A - Glass capable of effectively improving chemical strengthening warping property - Google Patents

Abstract

Translated fromChinese

本发明公开了一种有效改善化学强化翘曲性能的玻璃，该玻璃侧面即厚度方向CS*DOL分布满足|(∫CS*DOLdT,0≤T≤D/2)/(∫CS*DOLdT,‑D/2≤T≤0)‑1|≤10T%，T为相应的厚度，以玻璃中心为坐标原点，锡面为‑D/2，空气面为D/2；另外，中心张应力（CT）=CS*DOl/（T‑2DOL）。实现浮法玻璃化学强化翘曲性能的可控。

The invention discloses a glass that can effectively improve chemically strengthened warpage performance. The CS*DOL distribution on the side surface of the glass, that is, in the thickness direction, satisfies |(∫CS*DOLdT,0≤T≤D/2)/(∫CS*DOLdT,‑ D/2≤T≤0)‑1|≤10T%, T is the corresponding thickness, with the glass center as the coordinate origin, the tin surface is ‑D/2, and the air surface is D/2; in addition, the central tensile stress (CT )=CS*DOL/(T‑2DOL). To achieve the controllable warpage performance of float glass chemical strengthening.

Description

Translated fromChinese

有效改善化学强化翘曲性能的玻璃Glass with improved chemically strengthened warpage properties

技术领域technical field

本发明属于玻璃领域，涉及浮法玻璃，一种有效改善化学强化翘曲性能的玻璃及其制备方法。The invention belongs to the field of glass, and relates to float glass, a glass for effectively improving chemically strengthened warpage performance and a preparation method thereof.

背景技术Background technique

近年来，对于电子信息产品已基本为具有触摸面板的显示器，如平板电脑、智能手机、车载屏等。在触摸面屏显示器最外层有一层保护玻璃，又称“Cover Glass”盖板玻璃。盖板玻璃作为手机外屏，需要具有良好的机械强度(抗弯曲、抗冲击、抗跌落)。目前，增加盖板玻璃机械性能的方法主要为低温化学离子交换强化法，其原理为：在低于玻璃应变点的温度区域，用比表层碱离子(如Na⁺)离子半径大的一价阳离子(如K⁺)与Na⁺离子交换，使K⁺进入表层的方法。简而言之，就是在某一温度范围内，将含Na玻璃浸泡在含有高浓度K的熔融液中。但这种强化方法要求玻璃两个面的成分、热历史等性质接近，否则，容易造成强化后的玻璃平整度差(翘曲值)，平整度差会影响玻璃的贴合效果，从而影响智能手机等产品的整机跌落效果。In recent years, electronic information products have basically been displays with touch panels, such as tablet computers, smart phones, car screens, and the like. There is a layer of protective glass on the outermost layer of the touch panel display, also known as "Cover Glass" cover glass. As the outer screen of the mobile phone, the cover glass needs to have good mechanical strength (bending resistance, impact resistance, drop resistance). At present, the main method to increase the mechanical properties of cover glass is the low temperature chemical^ion exchange strengthening method. (such as K⁺ ) is exchanged with Na⁺ ions to make K⁺ enter the surface layer. In short, the Na-containing glass is immersed in a molten solution containing a high concentration of K within a certain temperature range. However, this strengthening method requires that the composition and thermal history of the two sides of the glass are close to each other. Otherwise, it is easy to cause poor flatness (warpage value) of the strengthened glass. The poor flatness will affect the bonding effect of the glass, thereby affecting the intelligent The drop effect of mobile phones and other products.

盖板玻璃目前主流的生产方式有溢流法(如Corning、NEG、彩虹、科立视)、浮法工艺(AGC-旭硝子、旭虹、南玻)，溢流法玻璃成型时，两面所处环境基本一致，热历史也基本相似，经化学强化后，翘曲值一般远低于要求标准(智能手机,一般在0.25mm)，浮法玻璃是在熔融的金属Sn表面成型，与金属面接触的一面称为锡液面，与金属面不接触的一面称为空气面。成型时，空气面、锡液面所处环境不同，造成化学成分以及结构有一定的差异性。浮法玻璃空气面、锡面化学成分以及结构具有不对称性，会导致化学强化后两面的CS、DOL(CS-表面压应力，DOL-离子交换深度)不一致，导致化学强化后的玻璃翘曲量超标，影响产品的贴合以及整机跌落。At present, the mainstream production methods of cover glass include overflow method (such as Corning, NEG, Rainbow, Keli Shi), float method (AGC-Asahi Glass, Xuhong, CSG). The environment is basically the same, and the thermal history is basically similar. After chemical strengthening, the warpage value is generally much lower than the required standard (smartphone, generally 0.25mm). Float glass is formed on the surface of molten metal Sn, which is in contact with the metal surface. The side that is not in contact with the metal surface is called the tin liquid surface, and the side that is not in contact with the metal surface is called the air surface. During molding, the air surface and tin liquid surface are in different environments, resulting in certain differences in chemical composition and structure. The chemical composition and structure of the air surface and tin surface of float glass are asymmetric, which will lead to inconsistent CS and DOL (CS-surface compressive stress, DOL-ion exchange depth) on both sides after chemical strengthening, resulting in the warpage of the chemically strengthened glass If the quantity exceeds the standard, it will affect the fit of the product and the drop of the whole machine.

目前处理翘曲的方法主要有以下几种：1)盖板玻璃加工厂对玻璃两面进行一定的磨削，以达到玻璃两面成分一致的目的，这种方式影响加工速率、加工成本。2)对玻璃原片进行在线处理，如专利CN201280064392，以无机物源气体、氧气、载气等为原料通过化学气相沉积的方法在玻璃表面形成无机氧化物膜，此方法需要控制化学反应过程且对气流控制较高。3)调节空气面、锡面的碱金属含量来调控浮法玻璃的化学钢化翘曲，如专利CN201380068423，以含有F、Cl、S等原子的呈酸性的气体、液体去和玻璃表面发生脱碱反应，此方法所用到的酸性气体对窑体有腐蚀作用，影响窑体的使用寿命，另外，所用到的含有F、Cl、S等原子的呈酸性的气体、液体对环境危害较大。At present, there are mainly the following methods for dealing with warpage: 1) The cover glass processing factory conducts a certain grinding on both sides of the glass to achieve the purpose of the same composition on both sides of the glass, which affects the processing rate and processing cost. 2) On-line processing of the original glass sheet, such as patent CN201280064392, using inorganic source gas, oxygen, carrier gas, etc. as raw materials to form an inorganic oxide film on the glass surface by chemical vapor deposition, this method needs to control the chemical reaction process and High airflow control. 3) Adjust the alkali metal content of the air surface and tin surface to control the chemical tempering and warping of float glass, such as patent CN201380068423, to deal with the glass surface with acidic gases and liquids containing atoms such as F, Cl, S, etc. The acid gas used in this method has a corrosive effect on the kiln body and affects the service life of the kiln body. In addition, the acid gas and liquid containing F, Cl, S and other atoms used are more harmful to the environment.

发明内容SUMMARY OF THE INVENTION

本发明提供一种有效改善化学强化翘曲性能的玻璃，使得浮法玻璃化学强化翘曲性能的可控。The invention provides a glass that can effectively improve the chemically strengthened warpage performance, so that the chemically strengthened warpage performance of the float glass is controllable.

本发明提供的技术方案是，一种有效改善化学强化翘曲性能的玻璃，该玻璃侧面即厚度方向CS*DOL分布满足|(∫CS*DOLdT,0≤T≤D/2)/(∫CS*DOLdT,-D/2≤T≤0)-1|≤10T％，T为相应的厚度，以玻璃中心为坐标原点，锡面为-D/2，空气面为D/2；另外，中心张应力(CT)＝CS*DOl/(T-2DOL)。The technical solution provided by the present invention is a glass that can effectively improve the chemically strengthened warpage performance, and the CS*DOL distribution on the side surface of the glass, that is, the thickness direction, satisfies |(∫CS*DOLdT, 0≤T≤D/2)/(∫CS *DOLdT,-D/2≤T≤0)-1|≤10T%, T is the corresponding thickness, take the glass center as the coordinate origin, the tin surface is -D/2, and the air surface is D/2; in addition, the center Tensile stress (CT)=CS*DO1/(T-2DOL).

优选地，CS*DOL分布满足|(∫CS*DOLdT,0≤T≤D/2)/(∫CS*DOLdT,-D/2≤T≤0)-1|≤T％。Preferably, the CS*DOL distribution satisfies |(∫CS*DOLdT,0≤T≤D/2)/(∫CS*DOLdT,-D/2≤T≤0)-1|≤T%.

进一步优选地，该玻璃空气面为A，锡面为B，A面与B面的CS*DoL比值∣CS_A*DOL_A/CS_B*DOL_B-1∣≤T％。Further preferably, the glass air surface is A, the tin surface is B, and the CS*DoL ratio of the A surface and the B surface is ∣CS_A *DOL_A /CS_B *DOL_B -1∣≤T%.

进一步地，所述玻璃为是采用溢流法、下拉法或浮法生产得到的。Further, the glass is produced by an overflow method, a down-draw method or a float method.

进一步地，所述玻璃抛光后，抛光面的CS*DOL值大于非抛光面的CS*DOL值。Further, after the glass is polished, the CS*DOL value of the polished surface is greater than the CS*DOL value of the non-polished surface.

本发明还涉及制备所述玻璃的方法，包括在玻璃的成型及后续表面处理步骤调节CS以及DOL值，使满足玻璃侧面即厚度方向CS*DOL分布规律。The invention also relates to a method for preparing the glass, which includes adjusting the CS and DOL values in the glass forming and subsequent surface treatment steps to satisfy the CS*DOL distribution law on the side surface of the glass, that is, in the thickness direction.

进一步地，成型过程中，通过控制玻璃不同区域的温度，或者利用电场或磁场控制玻璃不同厚度区域的成分分布，来调节CS和DOL值。Further, during the forming process, the CS and DOL values can be adjusted by controlling the temperature of different regions of the glass, or using electric or magnetic fields to control the composition distribution of the regions with different thicknesses of the glass.

进一步地，后续表面处理包括玻璃表面脱碱处理和玻璃表面镀膜处理。Further, the subsequent surface treatment includes dealkalization treatment on the glass surface and coating treatment on the glass surface.

通过约束CS*DOL的分布，不仅在2D产品上具有良好的翘曲，在2.5D盖板玻璃上也具有良好的翘曲值。2.5D产品结构不对称，容易导致2.5D结构四个角翘，即存在船翘；另外，2.5D产品加工过程中存在不对称抛光工序，其表面CS、DOL值不均衡，给控制翘曲带来难题。对于2.5D产品，由于应力检测仪，精度有限，且产品侧面为磨砂面，只能检测上、下两平面的CS、DOL值，并不能直接测量侧面的应力分布。故只能根据上、下平面的CS、DOL值间接反应侧面的应力分布情况。By constraining the distribution of CS*DOL, not only good warpage values are obtained on 2D products, but also good warpage values on 2.5D cover glass. The structure of 2.5D products is asymmetric, which will easily lead to warping of the four corners of the 2.5D structure, that is, ship warping; in addition, there is an asymmetric polishing process during the processing of 2.5D products, and the CS and DOL values on the surface are not balanced, which will control the warpage zone. Come to the problem. For 2.5D products, due to the limited accuracy of the stress detector, and the side surface of the product is frosted, it can only detect the CS and DOL values of the upper and lower planes, and cannot directly measure the stress distribution on the side. Therefore, the stress distribution on the side can only be indirectly reflected according to the CS and DOL values of the upper and lower planes.

采用本发明提供的方法制备的玻璃，具有良好的强化翘曲，不需要后续盖板加工厂进行磨削。The glass prepared by the method provided by the present invention has good reinforced warpage and does not need to be ground by a subsequent cover plate processing plant.

如果采用化学沉积原理镀膜，在玻璃某一侧镀膜富Al₂O₃溶剂悬浊液，表面形成富SiO₂、Al₂O₃层，可提高玻璃表面的硬度，提高玻璃的耐化学稳定性以及表面抗划伤性，在玻璃某一面形成一定厚度的无应力层，同时厚度的增加，也会使玻璃的几何中心变化，从而改善翘曲。SiO₂、Al₂O₃与玻璃化学组成较接近，特别是针对铝硅酸玻璃，SiO₂、Al₂O₃氧化物层的光学折射率与浮法玻璃的折射率接近，基本对原玻璃的光学性能无影响，没有恶化原来的光学性能。If the principle of chemical deposition is adopted, the Al₂ O₃ -rich solvent suspension is coated on one side of the glass, and a layer rich in SiO₂ and Al₂ O₃ is formed on the surface, which can improve the hardness of the glass surface, improve the chemical resistance and stability of the glass. Surface scratch resistance, a stress-free layer with a certain thickness is formed on one side of the glass, and the increase in thickness will also change the geometric center of the glass, thereby improving warpage. The chemical composition of SiO₂ and Al₂ O₃ is close to that of glass, especially for aluminosilicate glass, the optical refractive index of the oxide layer of SiO₂ and Al₂ O₃ is close to that of float glass, which is basically the same as that of the original glass. The optical performance is not affected, and the original optical performance is not deteriorated.

附图说明Description of drawings

图1是浮法玻璃CS*DoL值随玻璃厚度方向T的分布图。其中T为厚度，以玻璃中心为坐标原点，A为空气面，B为锡面。Fig. 1 is the distribution diagram of the CS*DoL value of float glass with the thickness direction T of the glass. Where T is the thickness, the center of the glass is the coordinate origin, A is the air surface, and B is the tin surface.

图2为2.5D盖板玻璃结构示意图。Figure 2 is a schematic diagram of the structure of a 2.5D cover glass.

具体实施方式Detailed ways

下面结合实施例，进一步阐明本发明。Below in conjunction with embodiment, further illustrate the present invention.

玻璃基板组成可以为铝硅酸盐玻璃、硼铝硅酸玻璃、锂铝硅酸玻璃等。由于溢流法、下拉法等工艺生产的玻璃化学强化翘曲一般符合标准，本发明选取的玻璃基板为浮法工艺产品。铝硅酸盐玻璃的化学强化工艺比较单一，加工影响较小，本发明的具体实例选取铝含量13％(wt％)铝硅酸盐玻璃作为对象。The glass substrate can be composed of aluminosilicate glass, boroaluminosilicate glass, lithium aluminosilicate glass, and the like. Since the glass chemically strengthened warpage produced by the overflow method, the down-draw method and other processes generally meets the standard, the glass substrate selected in the present invention is a float process product. The chemical strengthening process of aluminosilicate glass is relatively simple, and the processing influence is small. In the specific example of the present invention, aluminosilicate glass with an aluminum content of 13% (wt%) is selected as the object.

实施例1：Example 1:

玻璃基板的厚度无特殊要求，且当化学强化工艺一定时，厚度越大，化学强化翘曲越小，本发明选取0.7mm厚度产品。There is no special requirement for the thickness of the glass substrate, and when the chemical strengthening process is constant, the greater the thickness, the smaller the chemical strengthening warpage, and the present invention selects a product with a thickness of 0.7 mm.

该玻璃制备过程中，通过锡槽工艺调整、酸性处理及退火窑镀膜等控制，使得到的玻璃具有良好化学强化翘曲性能。In the preparation process of the glass, through the adjustment of the tin bath process, the acid treatment and the coating of the annealing kiln, the obtained glass has good chemically strengthened warpage performance.

具体地，锡槽工艺调整首先可以适当减小锡槽压力，增加锡槽部分区域的温度，增加气氛中的锡含量，其次调节锡槽保护气组成，在保护气混合中，加入一定量的锡蒸气，并将混有锡蒸气的保护气体通入锡槽，使锡槽气氛中的锡处于过饱和状态，在玻璃的非锡面沉积一层锡膜，即在玻璃空气面形成渗锡层，减少锡面与空气面的成分差，用以降低化学强化后空气面的DOL值。也可调节保护气的温度和流量，增大表面的碱挥发，从而在玻璃空气面形成贫碱层，降低空气面经化学强化后的CS值。Specifically, the adjustment of the tin bath process can first appropriately reduce the pressure of the tin bath, increase the temperature of some areas of the tin bath, and increase the tin content in the atmosphere, and then adjust the composition of the protective gas of the tin bath. In the mixing of the protective gas, a certain amount of tin is added. steam, and pass the protective gas mixed with tin vapor into the tin bath, so that the tin in the tin bath atmosphere is in a supersaturated state, and deposit a layer of tin film on the non-tin surface of the glass, that is, a tin infiltration layer is formed on the air surface of the glass, Reduce the composition difference between the tin surface and the air surface to reduce the DOL value of the air surface after chemical strengthening. The temperature and flow of the protective gas can also be adjusted to increase the alkali volatilization on the surface, thereby forming an alkali-depleted layer on the air surface of the glass and reducing the CS value of the air surface after chemical strengthening.

在酸性处理时，选取HCl、SO₂等酸性气体中的一种或者多种混合，在水蒸气、压缩空气等载气的引导下，按照一定流量导入进退火窑，进行玻璃基本表面的处理，处理温度区域在500℃-800℃，此处酸处理主要是显化微裂纹孔，与空气面表层的Na反应，降低化学强化后的CS值，酸性处理区域需用挡帘隔离。During the acid treatment, one or more acid gases such as HCl and SO₂ are selected to be mixed, and guided by a carrier gas such as water vapor and compressed air, they are introduced into the annealing kiln at a certain flow rate to treat the basic surface of the glass. The treatment temperature range is between 500°C and 800°C, where the acid treatment is mainly to visualize the microcracks, which react with Na on the surface of the air to reduce the CS value after chemical strengthening. The acid treatment area needs to be isolated by a curtain.

退火窑镀膜时，镀膜可以是镀一层无机氧化物膜，无机氧化物膜可以为SiO₂、Al₂O₃等化学稳定性好、硬度高的氧化物，SiO₂、Al₂O₃的光学折射率与玻璃基板较接近，都在1.50-1.52之间。主要选取硅溶胶、铝溶胶或者两者混合物，使用高温喷头、雾化室等进行雾化，并在压缩空气的引导下，进入退火窑，在玻璃表面进行化学沉积镀膜，处理温度500℃-800℃。When coating in the annealing kiln, the coating can be a layer_of inorganic_oxide film, and the inorganic_{oxide film can be oxides with good chemical stability and high hardness such as SiO 2and} Al₂ O₃ . The refractive index is close to that of the glass substrate, both between 1.50-1.52. Mainly select silica sol, aluminum sol or a mixture of the two, use high-temperature nozzles, atomizing chambers, etc. for atomization, and under the guidance of compressed air, enter the annealing kiln, and carry out chemical deposition and coating on the glass surface, treatment temperature 500 ℃-800 °C.

玻璃基板经退火、切裁，开料，CNC(外型加工)，抛光(0min、5min、10min、15min、20min),化学强化后进行检测。其中化学强化，采取K⁺交换玻璃中的Na⁺，采取一般盖板加工厂工艺:离子交换温度390-450℃，5h,慢退火。检测采用行业内常规仪器：FSM6000le应力测试仪，翘曲采用塞规或激光测试仪器测试。The glass substrate is annealed, cut, cut, CNC (exterior processing), polished (0min, 5min, 10min, 15min, 20min), and tested after chemical strengthening. Among them, for chemical strengthening, K⁺ is used to exchange Na⁺ in the glass, and the general cover plate processing factory process is adopted: ion exchange temperature is 390-450 ° C, 5h, and slow annealing. The detection adopts conventional instruments in the industry: FSM6000le stress tester, and the warpage is tested by plug gauge or laser testing instrument.

由于玻璃基板较薄，厚度方向的CS、DOL值不易抓取，本发明采用上、下面的CS、DOL值间接表征，经双面抛光测试，抛光15min后CS、DOL值变化不明显，且双面基本一致。具体如下表1所示。Since the glass substrate is thin, the CS and DOL values in the thickness direction are not easy to grasp. The present invention adopts the upper and lower CS and DOL values to indirectly represent the values. After the double-sided polishing test, the CS and DOL values do not change significantly after polishing for 15 minutes. The faces are basically the same. The details are shown in Table 1 below.

表1Table 1

采用SO₂气体，按照一定流量导入进退火窑，该区域用挡帘隔离，温度660℃，脱碱处理空气面化学强化得到。具体数据如下表2所示。Using SO₂ gas, it is introduced into the annealing kiln according to a certain flow, and the area is isolated by a curtain. The specific data are shown in Table 2 below.

表2Table 2

在脱碱的基础上，在温度为640℃区域，镀Al₂O₃膜，具体数据如下表3所示。On the basis of dealkalization, Al₂ O₃ film was plated in the temperature range of 640°C. The specific data are shown in Table 3 below.

表3table 3

另外，化学强化后翘曲值变化见下表4：In addition, the warpage value changes after chemical strengthening are shown in Table 4 below:

表4Table 4

2.5D产品中玻璃的边缘某一面为圆弧，且圆弧需要抛光，才能具有一定的亮度，一般抛光10-15min，其产品结构如附图2所示。由于其产品结构不对称，2.5D面产生船翘(2.5D面在上，四个角翘)。该产品靠近表面的CS*DOL相对于其他区域较小，抛光后，2.5D面的∫CS*DOLdT会大于2D面的∫CS*DOLdT，会导致龟翘(2.5D面在上，拱形)，从而抵消结构不对称产生的船翘，得到有效改善化学强化翘曲性能的玻璃。In the 2.5D product, one side of the edge of the glass is an arc, and the arc needs to be polished to have a certain brightness. Generally, polishing is 10-15min. The product structure is shown in Figure 2. Due to the asymmetry of its product structure, the 2.5D surface is warped (the 2.5D surface is on the top, and the four corners are warped). The CS*DOL of the product close to the surface is smaller than other areas. After polishing, the ∫CS*DOLdT of the 2.5D surface will be larger than the ∫CS*DOLdT of the 2D surface, which will lead to warping (the 2.5D surface is on top, arched) , thereby offsetting the warpage caused by the structural asymmetry, and obtaining a glass with effectively improved chemically strengthened warpage properties.

实施例2：该实施例中，采用溶胶-凝胶的原理镀膜，在玻璃某一面形成一定厚度的无应力层，同时厚度的增加，也会使玻璃的几何中心变化，从而改善翘曲。Example 2: In this example, the principle of sol-gel is used to form a stress-free layer with a certain thickness on a certain surface of the glass. At the same time, the increase of the thickness will also change the geometric center of the glass, thereby improving the warpage.

实验原料：0.7mm，2.5D产品，硅溶胶。Experimental material: 0.7mm, 2.5D product, silica sol.

实验过程：将玻璃开料、CNC、抛光得到2.5D未强化产品，在非抛光面镀硅溶胶，在烘箱内将硅溶胶进行固化。进行多批次试验，其中对比片未镀硅溶胶，而实验样进行了镀硅溶胶处理。具体数据见下表5，从测试数据上看，硅溶胶镀膜也有利于翘曲改善。Experimental process: cut glass, CNC, and polish to obtain a 2.5D unreinforced product, coat the non-polished surface with silica sol, and cure the silica sol in an oven. Multiple batches of tests were carried out, in which the control pieces were not coated with silica sol, while the experimental samples were treated with silica sol. The specific data are shown in Table 5 below. From the test data, the silica sol coating is also conducive to the improvement of warpage.

表5table 5

实施例3：Example 3:

实验原料：0.7mm产品，固含量10％的铝溶胶悬浊液。Experimental materials: 0.7mm product, aluminum sol suspension with a solid content of 10%.

实验过程：将300mm*300mm产品放入钢化预热炉中，加热到500℃，用喷雾瓶将铝溶胶进行雾化，喷入适量铝溶胶到玻璃片的空气面，关闭炉门，保温一段时间，随炉温冷却。再进行CNC、清洗、钢化、检测。具体数据见下表6。Experimental process: put the 300mm*300mm product into the tempering preheating furnace, heat it to 500℃, atomize the aluminum sol with a spray bottle, spray an appropriate amount of aluminum sol onto the air surface of the glass sheet, close the furnace door, and keep it warm for a period of time , with the furnace temperature cooling. Then carry out CNC, cleaning, tempering and testing. The specific data are shown in Table 6 below.

在玻璃某一侧镀膜富Al₂O₃溶剂悬浊液，在玻璃某一面形成一定厚度的无应力层，同时厚度的增加，也会使玻璃的几何中心变化，从而改善翘曲。Coating the Al₂ O₃ -rich solvent suspension on one side of the glass forms a stress-free layer with a certain thickness on one side of the glass. At the same time, the increase of the thickness will also change the geometric center of the glass, thereby improving the warpage.

在镀Al₂O₃溶胶时，钢化翘曲理论上应该先增加后降低，因为镀微量Al时，会增加表面的[AlO₄]，增加空气面的钢化DOL值，从而增加钢化翘曲，随着镀Al量增加，[AlO₄]逐渐降低，钢化翘曲减少，但在实验过程中并未发现钢化翘曲增加的过程，可能是由于实验设备过于简单，镀膜量无法精确管控，也有可能镀膜温度太低，未破坏玻璃原有的基团结构组成。When Al₂ O₃ sol is plated, the tempered warpage should first increase and then decrease in theory, because when a trace amount of Al is plated, the surface [AlO₄ ] will increase, and the tempered DOL value of the air surface will increase, thereby increasing the tempered warpage. As the amount of Al plating increases, the [AlO₄ ] gradually decreases, and the warpage of tempering decreases, but the process of increasing warpage of tempering is not found during the experiment. It may be because the experimental equipment is too simple, and the amount of coating cannot be accurately controlled. It is also possible that the coating The temperature is too low to destroy the original group structure of the glass.

表6Table 6

Claims (9)

Translated fromChinese

1.一种有效改善化学强化翘曲性能的玻璃，其特征在于：该玻璃侧面即厚度方向CS*DOL分布满足|(∫CS*DOLdT,0≤T≤D/2)/(∫CS*DOLdT,-D/2≤T≤0)-1|≤10T％，T为相应的厚度，以玻璃中心为坐标原点，锡面为-D/2，空气面为D/2；另外，中心张应力(CT)＝CS*DOl/(T-2DOL)。1. A glass for effectively improving chemically strengthened warpage performance, characterized in that: the CS*DOL distribution on the side surface of the glass, that is, in the thickness direction, satisfies |(∫CS*DOLdT, 0≤T≤D/2)/(∫CS*DOLdT ,-D/2≤T≤0)-1|≤10T%, T is the corresponding thickness, taking the glass center as the coordinate origin, the tin surface is -D/2, and the air surface is D/2; in addition, the central tensile stress (CT)=CS*DO1/(T-2DOL).2.根据权利要求1所述的玻璃，其特征在于：CS*DOL分布满足|(∫CS*DOLdT,0≤T≤D/2)/(∫CS*DOLdT,-D/2≤T≤0)-1|≤T％。2. The glass according to claim 1, wherein the CS*DOL distribution satisfies |(∫CS*DOLdT,0≤T≤D/2)/(∫CS*DOLdT,-D/2≤T≤0 )-1|≤T%.3.根据权利要求1所述的玻璃，其特征在于：该玻璃空气面为A，锡面为B，A面与B面的CS*DoL比值∣CS_A*DOL_A/CS_B*DOL_B-1∣≤T％。3. The glass according to claim 1, wherein: the air surface of the glass is A, the tin surface is B, and the CS*DoL ratio of the A surface and the B surface is ∣CS_A *DOL_A /CS_B *DOL_B - 1∣≤T%.4.根据权利要求1所述的玻璃，其特征在于：所述玻璃是采用溢流法、下拉法或浮法生产得到的。4 . The glass according to claim 1 , wherein the glass is produced by an overflow method, a down-draw method or a float method. 5 .5.根据权利要求1所述的玻璃，其特征在于：所述玻璃抛光后，抛光面的CS*DOL值大于非抛光面的CS*DOL值。5 . The glass according to claim 1 , wherein after the glass is polished, the CS*DOL value of the polished surface is greater than the CS*DOL value of the non-polished surface. 6 .6.根据权利要求1所述的玻璃，其特征在于：该玻璃为2D和/或者2.5D玻璃。6. The glass of claim 1, wherein the glass is 2D and/or 2.5D glass.7.制备权利要求1-6任意一项所述玻璃的方法，其特征在于：包括在玻璃的成型及后续表面处理步骤调节CS以及DOL值，使满足玻璃侧面即厚度方向CS*DOL分布规律。7. The method for preparing the glass according to any one of claims 1-6, characterized in that it comprises adjusting the CS and DOL values in the glass forming and subsequent surface treatment steps, so as to satisfy the CS*DOL distribution law on the side surface of the glass, that is, in the thickness direction.8.根据权利要求7所述的方法，其特征在于：成型过程中，通过控制玻璃不同区域的温度，或者利用电场或磁场控制玻璃不同厚度区域的成分分布，来调节CS和DOL值。8. The method according to claim 7, characterized in that: during the forming process, the CS and DOL values are adjusted by controlling the temperature of different regions of the glass, or using electric or magnetic fields to control the composition distribution of the regions with different thicknesses of the glass.9.根据权利要求7所述的方法，其特征在于：后续表面处理包括玻璃表面脱碱处理和玻璃表面镀膜处理。9 . The method according to claim 7 , wherein the subsequent surface treatment includes dealkalization treatment on the glass surface and coating treatment on the glass surface. 10 .

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