水热合成工艺对硬硅钙石纤维制备及显微形貌的影响

doi:10.3969/j.issn.1001-1935.2025.03.002

耐火材料 ›› 2025, Vol. 59 ›› Issue (3): 192-197.DOI: 10.3969/j.issn.1001-1935.2025.03.002

水热合成工艺对硬硅钙石纤维制备及显微形貌的影响

王得憬^1,2), 王文武²⁾, 叶国田¹⁾, 曹喜营²⁾, 王自强²⁾, 周玉栋²⁾

1)郑州大学材料科学与工程学院河南省高温功能材料重点实验室河南郑州 450001
2)中钢集团洛阳耐火材料研究院有限公司先进耐火材料全国重点实验室河南洛阳 471039

收稿日期:2024-12-05 出版日期:2025-06-15 发布日期:2025-06-16
通讯作者: 王文武,男,1972年生,硕士,正高级工程师。E-mail:wangww@lyrg.com.cn
作者简介:王得憬:女,1998年生,硕士研究生。E-mail:1469260036@qq.com

Effect of hydrothermal synthesis process on preparation and micromorphology of xonotlite fibers

Wang Dejing, Wang Wenwu, Ye Guotian, Cao Xiying, Wang Ziqiang, Zhou Yudong

First author’s address:Henan Key Laboratory of High Temperature Functional Ceramics,School of Materials Science and Engineering,Zhengzhou University,Zhengzhou 450001,China

Received:2024-12-05 Online:2025-06-15 Published:2025-06-16

摘要/Abstract

摘要： 为制备高长径比的硬硅钙石纤维,以白炭黑为硅源,Ca(OH)₂为钙源,采用动态水热法合成硬硅钙石。借助XRD、SEM考察保温温度(160、180、200、220、240 ℃)、搅拌转速(50、100、150、200、300 r·min^-1)、保温时间(2、6、12、24、36 h)对水热合成产物的物相组成及显微形貌的影响。结果表明:随着保温温度的升高,硬硅钙石含量增加,纤维长度增加;提高搅拌转速,硬硅钙石含量不变,纤维长度先增加后减小;延长保温时间,硬硅钙石含量增加,纤维长度显著增加。在220 ℃保温24 h、搅拌转速为100 r·min^-1的条件下,可获得长度14.7 μm、长径比47的硬硅钙石纤维。

关键词: 硬硅钙石纤维, 水热合成, 保温温度, 搅拌转速, 保温时间

Abstract: To achieve high aspect ratios,xonotlite fibers were synthesized via the dynamic hydrothermal method using hydrated silica as the silicon source and Ca(OH)₂ as the calcium source.The effects of the insulating temperature (160,180,200,220 and 240 ℃),the stirring speed (50,100,150,200 and 300 r·min^-1),and the insulating time (2,6,12,24 and 36 h) on the phase composition and micromorphology of hydrothermal products were investigated through XRD and SEM.The results show that:with the increasing insulating temperature,the xonotlite content and fiber length increase;with the stirring speed increasing,the xonotlite content maintains constant,but the fiber length initially increases and then decreases;with the insulating time prolonging,the xonotlite content increases,while the fiber length significantly extends.Under the conditions of insulating at 220 ℃ for 24 h at the stirring speed of 100 r·min^-1,xonotlite fibers with a length of 14.7 μm and an aspect ratio of 47 can be obtained.

Key words: xonotlite fibers, hydrothermal synthesis, insulating temperature, stirring speed, insulating time

中图分类号:

TQ175

王得憬, 王文武, 叶国田, 曹喜营, 王自强, 周玉栋. 水热合成工艺对硬硅钙石纤维制备及显微形貌的影响[J]. 耐火材料, 2025, 59(3): 192-197.

Wang Dejing, Wang Wenwu, Ye Guotian, Cao Xiying, Wang Ziqiang, Zhou Yudong. Effect of hydrothermal synthesis process on preparation and micromorphology of xonotlite fibers[J]. Refractories, 2025, 59(3): 192-197.

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水热合成工艺对硬硅钙石纤维制备及显微形貌的影响

Effect of hydrothermal synthesis process on preparation and micromorphology of xonotlite fibers

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