以MnO2为发泡剂、Na2B4O7为助熔剂制备煤矸石基发泡陶瓷的研究

doi:10.16552/j.cnki.issn1001-1625.2024.1250

硅酸盐通报 ›› 2025, Vol. 44 ›› Issue (6): 2280-2288.DOI: 10.16552/j.cnki.issn1001-1625.2024.1250

以MnO₂为发泡剂、Na₂B₄O₇为助熔剂制备煤矸石基发泡陶瓷的研究

张祥飞^1,2,3, 娄广辉^1,3, 张梦真³, 尹蕊³, 李静³, 张碗玉^1,3, 张艺升^1,3

1.河南省科学院,郑州 450000;
2.河南师范大学材料科学与工程学院,新乡 453007;
3.河南建筑材料研究设计院有限责任公司,郑州 450002

收稿日期:2024-10-21 修订日期:2025-02-14 发布日期:2025-06-27
通信作者: 娄广辉,正高级工程师。E-mail:loughui@126.com
作者简介:张祥飞(1997—),男,硕士研究生。主要从事绿色建筑材料的研究。E-mail:jasonleap@163.com
基金资助:
河南省科学院高水平成果奖励与培育项目(242209024)

Preparation of Gangue-Based Foamed Ceramics Using MnO₂ as Blowing Agent and Na₂B₄O₇ as Flux

ZHANG Xiangfei^1,2,3, LOU Guanghui^1,3, ZHANG Mengzhen³, YIN Rui³, LI Jing³, ZHANG Wanyu^1,3, ZHANG Yisheng^1,3

1. Henan Academy of Sciences, Zhengzhou 450000, China;
2. College of Materials Science and Engineering, Henan Normal University, Xinxiang 453007, China;
3. Henan Building Materials Research and Design Institute Co., Ltd., Zhengzhou 450002, China

Received:2024-10-21 Revised:2025-02-14 Online:2025-06-27

摘要/Abstract

摘要： 本研究以煤矸石固体废弃物和长石为主要原料、MnO₂为发泡剂、Na₂B₄O₇为助熔剂,采用高温发泡法制备了一种具有优异隔热性能的发泡陶瓷。试验研究了烧结温度、Na₂B₄O₇添加量和烧结时间对发泡陶瓷性能的影响。结果表明,当烧结温度为1 180 ℃、烧结时间为30 min时,制备的发泡陶瓷具有较好的综合性能,包括较低的密度、较高的孔隙率和较好的隔热性能。进一步探讨MnO₂作为发泡剂的发泡机理,发现在高温下MnO₂热分解产生的氧气有效促进了气孔的形成,从而提升了发泡陶瓷的孔隙率和隔热性能。该发泡陶瓷不仅提高了煤矸石的资源利用率,还减少了废弃物对环境的影响,具有较低的生产成本和显著的节能降耗潜力。

关键词: 煤矸石, 发泡陶瓷, MnO₂, 隔热性能, 孔隙率

Abstract: In this study, a foamed ceramics with excellent thermal insulation properties was prepared by high-temperature foaming method using gangue solid waste and feldspar as the main raw materials, MnO₂ as the blowing agent and Na₂B₄O₇ as the flux. The effects of sintering temperature, Na₂B₄O₇ addition and sintering time on the performance of foamed ceramics were experimentally investigated. The results indicate that when the sintering temperature is 1 180 ℃ and the sintering time is 30 min, the prepared foamed ceramics exhibit better overall properties, including lower density, higher porosity, and improved thermal insulation. Further exploration of the foaming mechanism of MnO₂ as a blowing agent reveals that the oxygen generated from the thermal decomposition of MnO₂ at high temperatures effectively promotes pore formation, enhancing the porosity and thermal insulation properties of the foamed ceramics. Additionally, the foamed ceramics not only improves the resource utilization of gangue but also reduces the environmental impact of waste, offering lower production costs and significant potential for energy savings and consumption reduction.

Key words: gangue, foamed ceramics, MnO₂, thermal insulation property, porosity

中图分类号:

TQ174

张祥飞, 娄广辉, 张梦真, 尹蕊, 李静, 张碗玉, 张艺升. 以MnO₂为发泡剂、Na₂B₄O₇为助熔剂制备煤矸石基发泡陶瓷的研究[J]. 硅酸盐通报, 2025, 44(6): 2280-2288.

ZHANG Xiangfei, LOU Guanghui, ZHANG Mengzhen, YIN Rui, LI Jing, ZHANG Wanyu, ZHANG Yisheng. Preparation of Gangue-Based Foamed Ceramics Using MnO₂ as Blowing Agent and Na₂B₄O₇ as Flux[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2025, 44(6): 2280-2288.

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以MnO₂为发泡剂、Na₂B₄O₇为助熔剂制备煤矸石基发泡陶瓷的研究

Preparation of Gangue-Based Foamed Ceramics Using MnO₂ as Blowing Agent and Na₂B₄O₇ as Flux

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