CN107986816A - 一种用于工业废气处理的多孔碳化硅陶瓷的制备方法 - Google Patents

一种用于工业废气处理的多孔碳化硅陶瓷的制备方法 Download PDF

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CN107986816A
CN107986816A CN201711361672.5A CN201711361672A CN107986816A CN 107986816 A CN107986816 A CN 107986816A CN 201711361672 A CN201711361672 A CN 201711361672A CN 107986816 A CN107986816 A CN 107986816A
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周军州
刘天辉
张玲
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Luoyang Mingli Science and Technology Development Co Ltd
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Abstract

本发明公开了一种用于工业废气处理的多孔碳化硅陶瓷的制备方法，以碳化硅微粉和α‑Al2O3为骨料,将两者混合均匀，在混合料中加入乙醇水溶液和水基粘结剂，将三者混合均匀并放入球磨机中，球磨2h，得到浆料；向球磨后的浆料中加入乙基纤维素和十二烷基苯磺酸钠，球磨30min；之后倒入模具中成型；将模具中的浆料自然晾干后放入烘箱中进行烘烤，先升温至500℃保温1h,然后升温至1200℃烧结3h,烧结后自然冷却至室温，得到多孔碳化硅陶瓷；所得多孔氧化锆陶瓷的孔隙率为88％，抗压强度为3.5MPa。本发明用乙基纤维素作造孔剂，提高了碳化硅陶瓷的孔隙率，用特制水基粘结剂，提高了粘结强度，降低了污染，得到的多孔氧化锆陶瓷孔隙率高，孔径均匀，提高了对工业废气的处理效果。

Description

一种用于工业废气处理的多孔碳化硅陶瓷的制备方法
技术领域
本发明涉及废气处理技术领域，具体涉及一种用于工业废气处理的多孔碳化硅陶瓷的制备方法。
背景技术
工业废气是三废之一，严重污染人类生存环境，多孔陶瓷由于具有流体通过压力小，表面积大，和流体接触效率高，吸附性能好的特点，可用于治理工业废气。
多孔陶瓷是一种经高温煅烧，体内具有大量彼此相通，并与材料表面相贯通的孔道结构的陶瓷材料，根据使用目的和对材料性能要求的不同，人们已经发展了多种多孔陶瓷的制造工艺，如添加造孔剂，、发泡、有机泡沫体浸渍，溶胶-凝胶工艺等。孙莹等人以糊精为粘结剂和造孔剂制备出催化剂载体的多孔碳化硅材料，得到孔隙率为27-70％的多孔陶瓷体。张勇以氮化硅为基体，通过加入一定量的纳米碳粉等添加剂，成功制备出具有高强度和较高气孔率的多孔陶瓷，陈艳林选用淀粉为造孔剂制备出显气孔率为30.9-47.7％的多孔陶瓷。上述方法所得到的多孔陶瓷孔隙率普遍较低，用于废气治理显然是不满足使用要求的。
发明内容
本发明旨在提供一种用于工业废气处理的多孔碳化硅陶瓷的制备方法，以特制水基粘结剂作为陶瓷粘结剂，提高了粘结强度，而且降低了污染，用乙基纤维素作为造孔剂，得到的多孔氧化锆陶瓷孔隙率高，可以达到88％，孔径均匀，没有明显的特大孔，以中孔为主，该多孔陶瓷用于工业废气治理具有显著的效果。
本发明的目的及解决其技术问题是采用以下技术方案来实现的。依据本发明提出的一种用于工业废气处理的多孔碳化硅陶瓷的制备方法，包括以下步骤：
(1)以碳化硅微粉和α-Al2O3为骨料,将两者混合均匀，然后在混合料中加入质量分数为40％的乙醇水溶液，并加入水基粘结剂，将三者混合均匀并一起放入球磨机中，再放入刚玉球，球磨2h，得到浆料；
(2)向球磨后的浆料中加入乙基纤维素，然后再加入十二烷基苯磺酸钠作为表面活性剂，继续球磨30min；之后倒入模具中成型；
(3)将模具中的浆料自然晾干后放入烘箱中进行烘烤，先升温至500℃保温1h,然后升温至1200℃烧结3h,烧结后自然冷却至室温，得到多孔碳化硅陶瓷；
所得多孔氧化锆陶瓷的孔隙率为88％，抗压强度为3.5MPa，对工业废气的治理效果达到85％以上。
本发明的目的及解决其技术问题还可采用以下技术措施进一步实现。
前述的一种用于工业废气处理的多孔碳化硅陶瓷的制备方法，其中，步骤(1)碳化硅微粉和α-Al2O3的质量比为：SiC:α-Al2O3＝7:1。
前述的一种用于工业废气处理的多孔碳化硅陶瓷的制备方法，其中，步骤(1)所述的水基粘结剂由以下重量百分比的原料构成：
所述水溶性粘结剂的成分包括：聚氯丁二烯、水、氧化镁和乙酸。
前述的一种用于工业废气处理的多孔碳化硅陶瓷的制备方法，其中，所述乙基纤维素的加入量为步骤(1)碳化硅微粉和α-Al2O3混合料质量的8-10％；所述十二烷基苯磺酸钠的加入量为步骤(1)碳化硅微粉和α-Al2O3混合料质量的2-3％。
本发明以特制水基粘结剂作为陶瓷粘结剂，提高了粘结强度，而且降低了污染，用乙基纤维素作为造孔剂，得到的多孔氧化锆陶瓷孔隙率高，可以达到88％，所得多孔陶瓷的抗压强度为3.5MPa，孔径均匀，没有明显的特大孔，以中孔为主，对工业废气的治理效果可达85％以上。
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具体实施方式
以下参照具体的实施例来说明本发明。这些实施例仅用于说明本发明，其不以任何方式限制本发明的范围。
实施例1
(1)以碳化硅(SiC)微粉和α-Al2O3为骨料,将两者按照SiC:α-Al2O3＝7:1的质量比混合均匀，然后加入质量分数为40％的乙醇水溶液，并加入水基粘结剂，将三者混合均匀并一起放入球磨机中，再放入刚玉球，球磨2h，得到浆料；
所述水基粘结剂按照重量百分比的组成为：水溶性粘结剂85％；稳定剂7％；相容剂3％；消泡剂5％；所述水溶性粘结剂的成分包括：聚氯丁二烯、水、氧化镁和乙酸；
(2)向球磨后的浆料中加入乙基纤维素，该乙基纤维素的加入量为步骤(1)碳化硅(SiC)微粉和α-Al2O3混合料质量的8％，然后再加入十二烷基苯磺酸钠作为表面活性剂，十二烷基苯磺酸钠的加入量为步骤(1)碳化硅微粉和α-Al2O3混合料质量的3％，继续球磨30min；之后倒入模具中成型；
(6)将模具中的浆料自然晾干后放入烘箱中进行烘烤，先升温至500摄氏度保温1h,然后升温至1200℃烧结3h,烧结后自然冷却至室温，得到多孔碳化硅陶瓷。
经测试，所得多孔氧化锆陶瓷的孔隙率为88％，抗压强度为3.5MPa。
实施例2
(1)以碳化硅(SiC)微粉和α-Al2O3为骨料,将两者按照SiC:α-Al2O3＝7:1的质量比混合均匀，然后加入质量分数为40％的乙醇水溶液，并加入水基粘结剂，将三者混合均匀并一起放入球磨机中，再放入刚玉球，球磨2h，得到浆料；
所述水基粘结剂按照重量百分比的组成为：水溶性粘结剂85％；稳定剂7％；相容剂3％；消泡剂5％；所述水溶性粘结剂的成分包括：聚氯丁二烯、水、氧化镁和乙酸；
(2)向球磨后的浆料中加入乙基纤维素，该乙基纤维素的加入量为步骤(1)碳化硅(SiC)微粉和α-Al2O3混合料质量的10％，然后再加入十二烷基苯磺酸钠作为表面活性剂，十二烷基苯磺酸钠的加入量为步骤(1)碳化硅微粉和α-Al2O3混合料质量的2％，继续球磨30min；之后倒入模具中成型；
(6)将模具中的浆料自然晾干后放入烘箱中进行烘烤，先升温至500摄氏度保温1h,然后升温至1200℃烧结3h,烧结后自然冷却至室温，得到多孔碳化硅陶瓷。
经测试，所得多孔氧化锆陶瓷的孔隙率为90％，抗压强度为3.5MPa。
以上所述，仅是本发明的较佳实施例而已，并非对本发明做任何形式上的限制，虽然本发明已以较佳实施例揭露如上，然而并非用以限定本发明，任何熟悉本专业的技术人员，在不脱离本发明技术方案范围内，当可利用上述揭示的技术内容做出些许更动或修饰为等同变化的等效实施例，但凡是未脱离本发明技术方案的内容，依据本发明的技术实质对以上实施例所做的任何简单修改、等同变化与修饰，均仍属于本发明技术方案的范围内。

Claims (4)

1.一种用于工业废气处理的多孔碳化硅陶瓷的制备方法，其特征在于包括以下步骤：
(1)以碳化硅微粉和α-Al2O3为骨料,将两者混合均匀，然后在混合料中加入质量分数为40％的乙醇水溶液，并加入水基粘结剂，将三者混合均匀并一起放入球磨机中，再放入刚玉球，球磨2h，得到浆料；
(2)向球磨后的浆料中加入乙基纤维素，然后再加入十二烷基苯磺酸钠作为表面活性剂，继续球磨30min；之后倒入模具中成型；
(3)将模具中的浆料自然晾干后放入烘箱中进行烘烤，先升温至500℃保温1h,然后升温至1200℃烧结3h,烧结后自然冷却至室温，得到多孔碳化硅陶瓷；
所得多孔氧化锆陶瓷的孔隙率为88％，抗压强度为3.5MPa，对工业废气的治理效果达到85％以上。
2.如权利要求1所述的用于工业废气处理的多孔碳化硅陶瓷的制备方法，其特征在于步骤(1)碳化硅微粉和α-Al2O3的质量比为：SiC:α-Al2O3＝7:1。
3.如权利要求1所述的用于工业废气处理的多孔碳化硅陶瓷的制备方法，其特征在于步骤(1)所述的水基粘结剂由以下重量百分比的原料构成：
所述水溶性粘结剂的成分包括：聚氯丁二烯、水、氧化镁和乙酸。
4.如权利要求1所述的用于工业废气处理的多孔碳化硅陶瓷的制备方法，其特征在于所述乙基纤维素的加入量为步骤(1)碳化硅微粉和α-Al2O3混合料质量的8-10％；所述十二烷基苯磺酸钠的加入量为步骤(1)碳化硅微粉和α-Al2O3混合料质量的2-3％。
CN201711361672.5A 2017-12-18 2017-12-18 一种用于工业废气处理的多孔碳化硅陶瓷的制备方法 Pending CN107986816A (zh)

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CN116178024A (zh) * 2023-02-28 2023-05-30 山东创新精密科技有限公司 一种复合多孔陶瓷增强铝合金材料

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