CN106747353A - 一种耐碱特种陶瓷及其制备方法 - Google Patents
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Abstract
本发明公开了一种耐碱特种陶瓷,包括以下重量份数的组分:30~50份的氧化铝,10~20份的氧化镁,5~10份的硅粉,5~10份的氧化锆,10~15份的二氧化硅,5~10份的高岭土,5~15份的膨润土和1~5份的粘结剂。同时,本发明还公开了上述特种陶瓷的制备方法。本发明与传统技术相比,通过浸渍氢氧化钠的预处理,使得混合料表面碱化,具有一层碱化层,在后续的煅烧中,使得这层碱化层进一步稳定,煅烧完成后,整体的特种陶瓷获得了更强的耐碱性。
Description
技术领域
本发明属于高性能功能陶瓷制造领域,具体涉及一种耐碱特种陶瓷及其制备方法。
背景技术
特种陶瓷不同的化学组成和组织结构决定了它不同的特殊性质和功能,如高强度、高硬度、高韧性等。由于性能特殊,这类陶瓷可作为工程结构材料和功能材料应用于机械、电子、化工、冶炼、能源、医学、激光、核反应、宇航等方面。一些经济发达国家,特别是日本、美国和西欧国家,为了加速新技术革命,为新型产业的发展奠定物质基础,投入大量人力、物力和财力研究开发特种陶瓷,因此特种陶瓷的发展十分迅速,在技术上也有很大突破。但是,如何最大限度地拥有耐碱特性的特种陶瓷仍是目前研究的一个课题。
发明内容
发明目的:本发明的目的在于针对现有技术的不足,提供一种耐碱特种陶瓷。
本发明的另一目的在于提供上述耐碱特种陶瓷的制备方法。
技术方案:为了达到上述发明目的,本发明具体是这样来完成的:一种耐碱特种陶瓷,包括以下重量份数的组分:30~50份的氧化铝,10~20份的氧化镁,5~10份的硅粉,5~10份的氧化锆,10~15份的二氧化硅,5~10份的高岭土,5~15份的膨润土和1~5份的粘结剂。
其中,所述高岭土与膨润土的粒度均小于100目。
其中,所述粘结剂由水泥与石膏按质量比4:1混合。
制备耐碱特种陶瓷的方法,包括以下步骤:
(1)按配方量取氧化铝,氧化镁,硅粉,氧化锆,二氧化硅,高岭土,膨润土初混10~30分钟,加入混合物总质量10~20%的氢氧化钠溶液浸渍2~4小时;
(2)用清水清洗混合物上的残留的氢氧化钠,3次冲洗,每次5~10分钟;
(3)将冲洗后的混合物在40~50℃下烘干;
(4)将烘干后的混合物与粘结剂混合,推进窑炉,控制温度600~700℃进行一次煅烧,煅烧时间为24~36小时;
(5)一次煅烧完成后,继续升温至1000~1200℃,进行二次煅烧,煅烧时间为12~24小时;
(6)将二次煅烧后的半成品冷却至室温,进行抛光、检测裂纹后即可。
其中,所述氢氧化钠的质量浓度为30%。
有益效果:本发明与传统技术相比,通过浸渍氢氧化钠的预处理,使得混合料表面碱化,具有一层碱化层,在后续的煅烧中,使得这层碱化层进一步稳定,煅烧完成后,整体的特种陶瓷获得了更强的耐碱性。
具体实施方式
实施例1:
取重量份数为50份的氧化铝,20份的氧化镁,10份的硅粉,10份的氧化锆,15份的二氧化硅,10份的高岭土,15份的膨润土初混10~30分钟,加入混合物总质量20%的氢氧化钠浸渍2~4小时;用清水清洗混合物上的残留的氢氧化钠,3次冲洗,每次5~10分钟;将冲洗后的混合物在40~50℃下烘干;将烘干后的混合物与5份粘结剂混合,推进窑炉,控制温度600~700℃进行一次煅烧,煅烧时间为24~36小时;一次煅烧完成后,继续升温至1000~1200℃,进行二次煅烧,煅烧时间为12~24小时;将二次煅烧后的半成品冷却至室温,进行抛光、检测裂纹后即可。
实施例2:
取重量份数为30份的氧化铝,10份的氧化镁,5份的硅粉,5份的氧化锆,10份的二氧化硅,5份的高岭土,5份的膨润土初混10~30分钟,加入混合物总质量10%的氢氧化钠浸渍2~4小时;用清水清洗混合物上的残留的氢氧化钠,3次冲洗,每次5~10分钟;将冲洗后的混合物在40~50℃下烘干;将烘干后的混合物与1份粘结剂混合,推进窑炉,控制温度600~700℃进行一次煅烧,煅烧时间为24~36小时;一次煅烧完成后,继续升温至1000~1200℃,进行二次煅烧,煅烧时间为12~24小时;将二次煅烧后的半成品冷却至室温,进行抛光、检测裂纹后即可。
实施例3:
取重量份数为40份的氧化铝,15份的氧化镁,8份的硅粉,6份的氧化锆,13份的二氧化硅,9份的高岭土,6份的膨润土初混10~30分钟,加入混合物总质量15%的氢氧化钠浸渍2~4小时;用清水清洗混合物上的残留的氢氧化钠,3次冲洗,每次5~10分钟;将冲洗后的混合物在40~50℃下烘干;将烘干后的混合物与3份粘结剂混合,推进窑炉,控制温度600~700℃进行一次煅烧,煅烧时间为24~36小时;一次煅烧完成后,继续升温至1000~1200℃,进行二次煅烧,煅烧时间为12~24小时;将二次煅烧后的半成品冷却至室温,进行抛光、检测裂纹后即可。
实施例4:
取重量份数为35份的氧化铝,18份的氧化镁,7份的硅粉,9份的氧化锆,13份的二氧化硅,9份的高岭土,14份的膨润土初混10~30分钟,加入混合物总质量10~20%的氢氧化钠浸渍2~4小时;用清水清洗混合物上的残留的氢氧化钠,3次冲洗,每次5~10分钟;将冲洗后的混合物在40~50℃下烘干;将烘干后的混合物与4份粘结剂混合,推进窑炉,控制温度600~700℃进行一次煅烧,煅烧时间为24~36小时;一次煅烧完成后,继续升温至1000~1200℃,进行二次煅烧,煅烧时间为12~24小时;将二次煅烧后的半成品冷却至室温,进行抛光、检测裂纹后即可。
实施例5:
取重量份数为45份的氧化铝,16份的氧化镁,9份的硅粉,6份的氧化锆,12份的二氧化硅,9份的高岭土,6份的膨润土初混10~30分钟,加入混合物总质量10~20%的氢氧化钠浸渍2~4小时;用清水清洗混合物上的残留的氢氧化钠,3次冲洗,每次5~10分钟;将冲洗后的混合物在40~50℃下烘干;将烘干后的混合物与3份粘结剂混合,推进窑炉,控制温度600~700℃进行一次煅烧,煅烧时间为24~36小时;一次煅烧完成后,继续升温至1000~1200℃,进行二次煅烧,煅烧时间为12~24小时;将二次煅烧后的半成品冷却至室温,进行抛光、检测裂纹后即可。
Claims (5)
1.一种耐碱特种陶瓷,其特征在于,包括以下重量份数的组分:30~50份的氧化铝,10~20份的氧化镁,5~10份的硅粉,5~10份的氧化锆,10~15份的二氧化硅,5~10份的高岭土,5~15份的膨润土和1~5份的粘结剂。
2.根据权利要求1所述的耐碱特种陶瓷,其特征在于,所述高岭土与膨润土的粒度均小于100目。
3.根据权利要求1所述的耐碱特种陶瓷,其特征在于,所述粘结剂由水泥与石膏按质量比4:1混合。
4.制备权利要求1所述耐碱特种陶瓷的方法,其特征在于,包括以下步骤:
(1)按配方量取氧化铝,氧化镁,硅粉,氧化锆,二氧化硅,高岭土,膨润土初混10~30分钟,加入混合物总质量10~20%的氢氧化钠溶液浸渍2~4小时;
(2)用清水清洗混合物上的残留的氢氧化钠,3次冲洗,每次5~10分钟;
(3)将冲洗后的混合物在40~50℃下烘干;
(4)将烘干后的混合物与粘结剂混合,推进窑炉,控制温度600~700℃进行一次煅烧,煅烧时间为24~36小时;
(5)一次煅烧完成后,继续升温至1000~1200℃,进行二次煅烧,煅烧时间为12~24小时;
(6)将二次煅烧后的半成品冷却至室温,进行抛光、检测裂纹后即可。
5.根据权利要求4所述的制备耐碱特种陶瓷的方法,其特征在于,所述氢氧化钠的质量浓度为30%。
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CN110818401A (zh) * | 2019-12-03 | 2020-02-21 | 王文定 | 一种耐用不碎边陶瓷盘的制备方法 |
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CN105254323A (zh) * | 2015-11-28 | 2016-01-20 | 郑州大学 | 一种微孔刚玉-莫来石陶瓷分离膜支撑体及其制备方法 |
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CN1420100A (zh) * | 2001-11-17 | 2003-05-28 | 兰州瑞玛化机有限公司 | 高温耐碱性材料及其在陶瓷填料中的应用 |
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CN105254323A (zh) * | 2015-11-28 | 2016-01-20 | 郑州大学 | 一种微孔刚玉-莫来石陶瓷分离膜支撑体及其制备方法 |
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CN110818401A (zh) * | 2019-12-03 | 2020-02-21 | 王文定 | 一种耐用不碎边陶瓷盘的制备方法 |
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