CN107266069A - 一种利用玻璃粉渗透再生氧化锆多孔陶瓷的制备方法 - Google Patents
一种利用玻璃粉渗透再生氧化锆多孔陶瓷的制备方法 Download PDFInfo
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Abstract
本发明公开了一种利用玻璃粉渗透再生氧化锆多孔陶瓷的制备方法，本发明制备方法制备的玻璃粉渗透再生氧化锆多孔陶瓷，不仅解决了废弃氧化锆陶瓷以及氧化锆陶瓷回料的处理问题，而且制备出的日用陶瓷产品力学性能优异，改善了氧化锆陶瓷的脆性，得到致密性好、断裂韧性好的日用陶瓷产品。
Description
技术领域
本发明涉及日用陶瓷技术领域，尤其涉及一种利用玻璃粉渗透再生氧化锆多孔陶瓷的制备方法及其制备方法。
背景技术
在陶瓷材料中，氧化锆陶瓷相对于其它陶瓷材料，其强度和断裂韧性都更加优异，因此被广泛应用于结构陶瓷领域。主要产品有磨球、分散和研磨介质、氧化锆模具、耐磨刀具、服装纽扣、表壳及表带、手链及吊坠等及其它室温耐磨零器件等。大量的应用导致较多的废弃陶瓷以及回料的产生，不仅造成环境污染，还造成了陶瓷资源的浪费，但是氧化锆的固有脆性限制了再生氧化锆陶瓷的再利用，这就需要对氧化锆陶瓷废弃物进行再利用工艺的改性，从而制备出耐磨抗裂的日用陶瓷产品，满足日常生活所需。
发明内容
本发明目的就是为了弥补已有技术的缺陷，提供一种利用玻璃粉渗透再生氧化锆多孔陶瓷的制备方法。
本发明是通过以下技术方案实现的：
一种利用玻璃粉渗透再生氧化锆多孔陶瓷的制备方法，包括以下具体步骤：
（1）将氧化锆回料进行粉碎，过200目筛后加入适量的去离子水，搅拌均匀后进行磁浮选，去除铁杂质，然后放入球磨机中继续球磨40-60分钟，最后喷雾干燥，得到处理后的氧化锆粉；
（2）将处理后的氧化锆粉与三氧化二钇、碳酸氢铵粉体搅拌均匀，然后加入适量的聚乙烯醇，放入混料机中混合30-40分钟后在一定的压力下干压成型，然后在550-600摄氏度下煅烧90-120分钟后送入微波烧结炉中，抽真空、通氮气，控制微波烧结温度1200-1300℃进行微波烧结，保温30-40分钟，得到多孔再生氧化锆陶瓷坯体；
（3）将氧化镁、二氧化硅、三氧化二硼、三氧化二钇按照一定的比例混合均匀，然后将粉体放入高温电阻炉中以1250-1300℃烧结60-80分钟，取出后水淬，得到块状玻璃，将其破碎后进行干法球磨60-90分钟，得到玻璃粉；
（4）将玻璃粉中加入3-3.5倍量的去离子水中，搅拌均匀形成玻璃粉浆，然后将步骤（2）产物多孔再生氧化锆陶瓷坯体浸泡在玻璃粉浆中40-60分钟后取出，继续将玻璃粉浆涂覆在陶瓷坯体表面，涂膜厚度控制在2.5-3㎜，最后将其放入高温电阻炉中以一定的升温速率升温至1300-1350℃，保温渗透4.5-5小时，随后随炉冷却即可。
一种利用玻璃粉渗透再生氧化锆多孔陶瓷的制备方法，步骤（1）中所述的磁浮选是指利用磁场强度1000高斯的除铁器除铁进行磁浮选。
一种利用玻璃粉渗透再生氧化锆多孔陶瓷的制备方法，步骤（2）中所述的一定的压力是指300-350MPa的压力。
一种利用玻璃粉渗透再生氧化锆多孔陶瓷的制备方法，步骤（2）中所述的处理后的氧化锆粉、三氧化二钇、碳酸氢铵的添加量为90:5:5；所述的聚乙烯醇的添加量为处理后的氧化锆粉、三氧化二钇、碳酸氢铵质量总和的2-3%。
一种利用玻璃粉渗透再生氧化锆多孔陶瓷的制备方法，步骤（3）中所述的氧化镁、二氧化硅、三氧化二硼、三氧化二钇按照一定的比例混合均匀是指以25:52:20:3的比例混合均匀。
一种利用玻璃粉渗透再生氧化锆多孔陶瓷的制备方法，步骤（4）中所述的玻璃粉与多孔再生氧化锆陶瓷坯体的质量比为1:3。
一种利用玻璃粉渗透再生氧化锆多孔陶瓷的制备方法，步骤（4）中所述的以一定的升温速率是指以5-8℃/min的速率进行升温。
本发明的优点是：本发明首先将氧化锆回料进行粉碎、高强磁选、球磨的工艺，得到无杂质铁的再生氧化锆粉料，然后利用碳酸氢铵作为致孔剂对再生氧化锆粉料进行干压烧结，得到多孔再生氧化锆陶瓷坯体，通过微波加热的方式进行烧结，与普通高温炉烧结方式相比，缩短了烧成时间，提高了生产效率；继续利用科学合理的成成分配比对氧化镁、二氧化硅、三氧化硼、三氧化二钇进行复配进行烧结得到玻璃块，将玻璃块粉碎加水后制备玻璃粉浆用于浸渍多孔再生氧化锆陶瓷坯体，再利用其对陶瓷表面进行涂覆，使得玻璃粉浆完全浸入到陶瓷坯体的孔隙以及包裹在外表面，通过高温烧结，填充的玻璃相能够起到第二相增强作用，从而达到提高材料的断裂韧性和强度的效果，且玻璃粉并没有固溶于氧化锆晶体内，不会对氧化锆的晶体晶格产生影响；而且由于玻璃粉浆的渗透能够提高多孔氧化锆基体的致密度，从而提高其力学性能。
本发明制备方法制备的玻璃粉渗透再生氧化锆多孔陶瓷，不仅解决了废弃氧化锆陶瓷以及氧化锆陶瓷回料的处理问题，而且制备出的日用陶瓷产品力学性能优异，改善了氧化锆陶瓷的脆性，得到致密性好、断裂韧性好的日用陶瓷产品。
具体实施方式
一种利用玻璃粉渗透再生氧化锆多孔陶瓷的制备方法，包括以下具体步骤：
（1）将氧化锆回料进行粉碎，过200目筛后加入适量的去离子水，搅拌均匀后利用磁场强度1000高斯的除铁器除铁进行磁浮选，去除铁杂质，然后放入球磨机中继续球磨40分钟，最后喷雾干燥，得到处理后的氧化锆粉；
（2）将90g处理后的氧化锆粉与5g三氧化二钇、5g碳酸氢铵粉体搅拌均匀，然后加入2g聚乙烯醇，放入混料机中混合30分钟后在300MPa的压力下干压成型，然后在550摄氏度下煅烧90分钟后送入微波烧结炉中，抽真空、通氮气，控制微波烧结温度1200℃进行微波烧结，保温30分钟，得到多孔再生氧化锆陶瓷坯体；
（3）将8g氧化镁、17g二氧化硅、7g三氧化二硼、1g三氧化二钇混合均匀，然后将粉体放入高温电阻炉中以1250℃烧结60分钟，取出后水淬，得到块状玻璃，将其破碎后进行干法球磨60分钟，得到玻璃粉；
（4）将玻璃粉中加入3倍量的去离子水中，搅拌均匀形成玻璃粉浆，然后将步骤（2）产物多孔再生氧化锆陶瓷坯体浸泡在玻璃粉浆中40分钟后取出，继续将玻璃粉浆涂覆在陶瓷坯体表面，涂膜厚度控制在2.5㎜，最后将其放入高温电阻炉中以5℃/min的速率升温至1300℃，保温渗透4.5小时，随后随炉冷却即可。
Claims (7)
1.一种利用玻璃粉渗透再生氧化锆多孔陶瓷的制备方法，其特征在于，包括以下具体步骤：
（1）将氧化锆回料进行粉碎，过200目筛后加入适量的去离子水，搅拌均匀后进行磁浮选，去除铁杂质，然后放入球磨机中继续球磨40-60分钟，最后喷雾干燥，得到处理后的氧化锆粉；
（2）将处理后的氧化锆粉与三氧化二钇、碳酸氢铵粉体搅拌均匀，然后加入适量的聚乙烯醇，放入混料机中混合30-40分钟后在一定的压力下干压成型，然后在550-600摄氏度下煅烧90-120分钟后送入微波烧结炉中，抽真空、通氮气，控制微波烧结温度1200-1300℃进行微波烧结，保温30-40分钟，得到多孔再生氧化锆陶瓷坯体；
（3）将氧化镁、二氧化硅、三氧化二硼、三氧化二钇按照一定的比例混合均匀，然后将粉体放入高温电阻炉中以1250-1300℃烧结60-80分钟，取出后水淬，得到块状玻璃，将其破碎后进行干法球磨60-90分钟，得到玻璃粉；
（4）将玻璃粉中加入3-3.5倍量的去离子水中，搅拌均匀形成玻璃粉浆，然后将步骤（2）产物多孔再生氧化锆陶瓷坯体浸泡在玻璃粉浆中40-60分钟后取出，继续将玻璃粉浆涂覆在陶瓷坯体表面，涂膜厚度控制在2.5-3㎜，最后将其放入高温电阻炉中以一定的升温速率升温至1300-1350℃，保温渗透4.5-5小时，随后随炉冷却即可。
2.根据权利要求所述的一种利用玻璃粉渗透再生氧化锆多孔陶瓷的制备方法，其特征在于，步骤（1）中所述的磁浮选是指利用磁场强度1000高斯的除铁器除铁进行磁浮选。
3.根据权利要求所述的一种利用玻璃粉渗透再生氧化锆多孔陶瓷的制备方法，其特征在于，步骤（2）中所述的一定的压力是指300-350MPa的压力。
4.根据权利要求所述的一种利用玻璃粉渗透再生氧化锆多孔陶瓷的制备方法，其特征在于，步骤（2）中所述的处理后的氧化锆粉、三氧化二钇、碳酸氢铵的添加量为90:5:5；所述的聚乙烯醇的添加量为处理后的氧化锆粉、三氧化二钇、碳酸氢铵质量总和的2-3%。
5.根据权利要求所述的一种利用玻璃粉渗透再生氧化锆多孔陶瓷的制备方法，其特征在于，步骤（3）中所述的氧化镁、二氧化硅、三氧化二硼、三氧化二钇按照一定的比例混合均匀是指以25:52:20:3的比例混合均匀。
6.根据权利要求所述的一种利用玻璃粉渗透再生氧化锆多孔陶瓷的制备方法，其特征在于，步骤（4）中所述的玻璃粉与多孔再生氧化锆陶瓷坯体的质量比为1:3。
7.根据权利要求所述的一种利用玻璃粉渗透再生氧化锆多孔陶瓷的制备方法，其特征在于，步骤（4）中所述的以一定的升温速率是指以5-8℃/min的速率进行升温。
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| CN115304371A (zh) * | 2021-05-07 | 2022-11-08 | 苏州宸泰医疗器械有限公司 | 玻璃渗透氧化锆陶瓷及其制备方法 |
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