CN109516791A - 一种无机多孔陶瓷材料及其制备方法 - Google Patents

一种无机多孔陶瓷材料及其制备方法 Download PDF

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CN109516791A
CN109516791A CN201811238095.5A CN201811238095A CN109516791A CN 109516791 A CN109516791 A CN 109516791A CN 201811238095 A CN201811238095 A CN 201811238095A CN 109516791 A CN109516791 A CN 109516791A
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郭元
章波
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Wuhu Corey Yuen New Mstar Technology Ltd
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Abstract

本发明公开了一种无机多孔陶瓷材料及其制备方法，具体包括以下步骤：S1：首先，将长石粉、蒙脱土以及(CaCO3、SiO2、MgO、Al2O3)按照一定的比例进行称重配料，置于球磨机内进行研磨烘干，最后，烘干后的混料置于研磨机内进行碾碎后，过筛；S2：首先，将骨料(石英砂)、淀粉以及过筛后的无机粘结剂按照比例进行称重后置于球磨机进行混合，然后，往混合好的混合料内加入质量分数为4％的石蜡，最后，于85℃的恒温箱内进行微加热混合，过筛；S3：首先，将步骤2中混合后的无机多孔陶瓷粉料注入模具中，同时利用压片机对粉料进行加压成型后，脱模；S4：将步骤3中经过加压定型的坯体置于烧结炉内进行烧结30min后，停止升温后保温，坯体随炉自然冷却，即得成品。

Description

一种无机多孔陶瓷材料及其制备方法
技术领域
发明涉及陶瓷材料领域，具体为一种无机多孔陶瓷材料及其制备方法。
背景技术
多孔陶瓷是相对于气孔率较低的致密陶瓷而言的，其孔隙率较高，内部具 有大量彼此连通或者封闭的孔隙，作为一种较新型的陶瓷材料，主要是依靠在 高温下烧结人工合成的，通过控制不同的参数和条件，使其体内产生一定数量、 尺寸和不同形状的孔隙，并在空间上形成多孔的三维结构，它不仅具有普通陶 瓷的传统优点，如耐高温、耐腐蚀、高强度、高化学稳定性等，还有孔隙率高、 比表面积大、体积密度小等特性，多孔陶瓷可以用作催化剂载体、过滤分离以 及吸音材料，随着对于多孔陶瓷研究得不断深入，多孔陶瓷如今己在能源、化 工、环保、医疗、电子等领域得到广泛利用。
但是，现有的多孔陶瓷作为过滤分离材料存在生产工艺复杂、强度不够， 进而无法承受一定大小的压力，在用于过程中会出现破裂现象，影响过滤效果， 此外，多孔陶瓷材料的气孔率较低无法满足过滤的要求，使得分离效果较差的 问题，为此，我们提出了一种无机多孔陶瓷材料及其制备方法。
发明内容
发明的目的在于提供一种无机多孔陶瓷材料及其制备方法，以解决上述背 景技术中提出的问题。
为实现上述目的，发明提供如下技术方案：一种无机多孔陶瓷材料及其制 备方法，具体包括以下步骤：
S1：首先，将长石粉、蒙脱土以及(CaCO3、SiO2、MgO、Al2O3)按照 一定的比例进行称重配料，置于球磨机内进行研磨混合，球磨介质为去离子水， 配料：水的比例为1:2，球磨时间为12h-15h，然后，将充分研磨后的混料置于80℃ -100℃的烘箱内缓慢烘干，最后，烘干后的混料置于研磨机内进行碾碎后，过240 目筛，制得无机粘结剂；
S2：首先，将骨料(石英砂)、淀粉以及过筛后的无机粘结剂按照比例进 行称重后置于球磨机进行混合，球磨机转速为350r/min，球磨时间为6h，然后， 往混合好的混合料内加入质量分数为4％的石蜡，最后，于85℃的恒温箱内进 行微加热混合，过筛；
S3：首先，将步骤2中混合后的无机多孔陶瓷粉料注入模具中，同时利用 压片机对粉料进行加压成型、维持10-20s，然后停止压片机的加压，静置 30min，脱模；
S4：将步骤3中经过加压定型的坯体置于烧结炉内进行烧结30min后，停 止升温后保温，坯体随炉自然冷却，即得成品。
优选的，步骤1中所述将长石粉、蒙脱土以及(CaCO3、SiO2、MgO、 Al2O3)的比例为(20.2-23.45)：(21.23-22.56)：(52.34-56.73)。
优选的，步骤2中所述骨料(石英砂)：无机粘结剂＝85：15，所述淀粉 为骨料(石英砂)与无机粘结剂总量的10wt％。
优选的，步骤4所述的烧结工艺为，将成型坯体置于烧结炉内，烧结温度 保持在1200℃-1500℃，采取逐渐升温的方式，烧结时间为30min-60min，后停 止升温保温2h后，切断烧结炉电源，坯体随炉温自然冷却。
与现有技术相比，发明的有益效果是：
1、该无机多孔陶瓷材料及其制备方法采用颗粒堆积结合造孔剂，制备了 用于过滤的多孔陶瓷材料，并确定了各组分的比例，使得制得的多孔陶瓷材料 用于过滤时具有较好的过滤分离效果，且具有较好的强度。
2、该无机多孔陶瓷材料及其制备方法，步骤1中所述将长石粉、蒙脱土 以及(CaCO3、SiO2、MgO、Al2O3)的比例为(20.2-23.45)：(21.23-22.56)： (52.34-56.73),该无机粘结剂的配方的熔点较低，且利用该无机粘结剂的坯体 颗粒结合致密，强度较高，且能够在较低的烧结温度下获得较好的性能，进而 在多孔陶瓷材料生产的过程中能够使用较少的能源获得较好的性能，节约资源， 保护环境，同时使用无机粘结剂更加绿色环保。
3、该无机多孔陶瓷材料及其制备方法，步骤2中所述骨料(石英砂)： 无机粘结剂＝85：15，所述淀粉为骨料(石英砂)与无机粘结剂总量的10wt％， 该配方有利于减少拉应力的产生，进而减少粘结相在骨料(石英砂)表面产生 裂纹，提高坯体的强度，进而能够承受较强压力，不易破裂。
4、该无机多孔陶瓷材料及其制备方法，步骤4所述的烧结工艺为，将成 型坯体置于烧结炉内，烧结温度保持在1200℃-1500℃，采取逐渐升温的方式， 烧结时间为30min-60min，后停止升温保温2h后，切断烧结炉电源，坯体随炉 温自然冷却，保证了无机粘结剂充分形成低共熔物并得到充分熔融，保证形成 的气孔不易堵塞以及坯体不易变形，具有较高的气孔率。
具体实施方式
下面将结合本发明实施例，对本发明实施例中的技术方案进行清楚、完 整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部 的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性 劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
发明提供一种技术方案：一种无机多孔陶瓷材料及其制备方法，具体包 括以下步骤：
S1：首先，将长石粉、蒙脱土以及(CaCO3、SiO2、MgO、Al2O3)按照 一定的比例进行称重配料，置于球磨机内进行研磨混合，球磨介质为去离子水， 配料：水的比例为1:2，球磨时间为12h-15h，然后，将充分研磨后的混料置于80℃ -100℃的烘箱内缓慢烘干，最后，烘干后的混料置于研磨机内进行碾碎后，过240 目筛，制得无机粘结剂；
S2：首先，将骨料(石英砂)、淀粉以及过筛后的无机粘结剂按照比例进 行称重后置于球磨机进行混合，球磨机转速为350r/min，球磨时间为6h，然后， 往混合好的混合料内加入质量分数为4％的石蜡，最后，于85℃的恒温箱内进 行微加热混合，过筛；
S3：首先，将步骤2中混合后的无机多孔陶瓷粉料注入模具中，同时利用 压片机对粉料进行加压成型、维持10-20s，然后停止压片机的加压，静置 30min，脱模；
S4：将步骤3中经过加压定型的坯体置于烧结炉内进行烧结30min后，停 止升温后保温，坯体随炉自然冷却，即得成品。
步骤1中所述将长石粉、蒙脱土以及(CaCO3、SiO2、MgO、Al2O3)的 比例为(20.2-23.45)：(21.23-22.56)：(52.34-56.73)。
步骤2中所述骨料(石英砂)：无机粘结剂＝85：15，所述淀粉为骨料(石 英砂)与无机粘结剂总量的10wt％。
步骤4所述的烧结工艺为，将成型坯体置于烧结炉内，烧结温度保持在1200℃-1500℃，采取逐渐升温的方式，烧结时间为30min-60min，后停止升温 保温2h后，切断烧结炉电源，坯体随炉温自然冷却。
工作原理：该无机多孔陶瓷材料及其制备方法采用颗粒堆积结合造孔剂， 制备了用于过滤的多孔陶瓷材料，并确定了各组分的比例，使得制得的多孔陶 瓷材料用于过滤时具有较好的过滤分离效果，且具有较好的强度。该无机多孔 陶瓷材料及其制备方法，步骤1中所述将长石粉、蒙脱土以及(CaCO3、 SiO2、MgO、Al2O3)的比例为(20.2-23.45)：(21.23-22.56)：(52.34-56.73), 该无机粘结剂的配方的熔点较低，且利用该无机粘结剂的坯体颗粒结合致密， 强度较高，且能够在较低的烧结温度下获得较好的性能，进而在多孔陶瓷材料 生产的过程中能够使用较少的能源获得较好的性能，节约资源，保护环境，同 时使用无机粘结剂更加绿色环保。该无机多孔陶瓷材料及其制备方法，步骤2 中所述骨料(石英砂)：无机粘结剂＝85：15，所述淀粉为骨料(石英砂)与 无机粘结剂总量的10wt％，该配方有利于减少拉应力的产生，进而减少粘结相 在骨料(石英砂)表面产生裂纹，提高坯体的强度，进而能够承受较强压力， 不易破裂。该无机多孔陶瓷材料及其制备方法，步骤4所述的烧结工艺为，将 成型坯体置于烧结炉内，烧结温度保持在1200℃-1500℃，采取逐渐升温的方式，烧结时间为30min-60min，后停止升温保温2h后，切断烧结炉电源，坯体 随炉温自然冷却，保证了无机粘结剂充分形成低共熔物并得到充分熔融，保证 形成的气孔不易堵塞以及坯体不易变形，具有较高的气孔率。
显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发 明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及 其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (4)

1.一种无机多孔陶瓷材料及其制备方法，其特征在于：具体包括以下步骤：
S1：首先，将长石粉、蒙脱土以及(CaCO3、SiO2、MgO、Al2O3)按照一定的比例进行称重配料，置于球磨机内进行研磨混合，球磨介质为去离子水，配料：水的比例为1:2，球磨时间为12h-15h，然后，将充分研磨后的混料置于80℃-100℃的烘箱内缓慢烘干，最后，烘干后的混料置于研磨机内进行碾碎后，过240目筛，制得无机粘结剂；
S2：首先，将骨料(石英砂)、淀粉以及过筛后的无机粘结剂按照比例进行称重后置于球磨机进行混合，球磨机转速为350r/min，球磨时间为6h，然后，往混合好的混合料内加入质量分数为4％的石蜡，最后，于85℃的恒温箱内进行微加热混合，过筛；
S3：首先，将步骤2中混合后的无机多孔陶瓷粉料注入模具中，同时利用压片机对粉料进行加压成型、维持10-20s，然后停止压片机的加压，静置30min，脱模；
S4：将步骤3中经过加压定型的坯体置于烧结炉内进行烧结30min后，停止升温后保温，坯体随炉自然冷却，即得成品。
2.如权利要求1所述的一种无机多孔陶瓷材料及其制备方法，其特征在于：步骤1中所述将长石粉、蒙脱土以及(CaCO3、SiO2、MgO、Al2O3)的比例为(20.2-23.45)：(21.23-22.56)：(52.34-56.73)。
3.如权利要求1所述的一种无机多孔陶瓷材料及其制备方法，其特征在于：步骤2中所述骨料(石英砂)：无机粘结剂＝85：15，所述淀粉为骨料(石英砂)与无机粘结剂总量的10wt％。
4.如权利要求1所述的一种无机多孔陶瓷材料及其制备方法，其特征在于：步骤4所述的烧结工艺为，将成型坯体置于烧结炉内，烧结温度保持在1200℃-1500℃，采取逐渐升温的方式，烧结时间为30min-60min，后停止升温保温2h后，切断烧结炉电源，坯体随炉温自然冷却。
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