地质聚合物激发剂及其激发原理

doi:10.19964/j.issn.1006-4990.2021-0211

摘要/Abstract

摘要：

激发剂在制备地质聚合物的过程中发挥着重要的作用。首先概述了酸、碱和盐3类激发剂及其激发效果,通过介绍氢氧化钠、氢氧化钾和水玻璃等常用碱激发剂的激发效果,具体分析各类碱激发剂的作用差别。阐述了乙酸、盐酸、硫酸和磷酸等典型的酸激发剂的研究进展,以及硫酸盐、硅酸盐和铝酸盐等作为盐类激发剂的活化能力,在此基础上对3类激发剂的优缺点进行了总结分析。同时通过论述酸、碱和盐3类激发剂的激发原理,进一步表明了3类激发剂都具备激发地聚物原料活性的能力,都能够不同程度地加快地聚体系水化反应进程,显著提高地聚体系的强度。最后,对激发剂在地聚物领域的未来发展作出了展望。

关键词: 地质聚合物, 激发剂, 激发原理, 激发效果, 水化反应

Abstract:

The activator plays an important role in the process of preparing geopolymers.The three types of stimulators of acid,alkali and salt and their stimulating effects were summarized firstly.By introducing the stimulating effects of common al-kali stimulators such as sodium hydroxide,potassium hydroxide and water glass,the difference in the effects of various alkali stimulators was analyzed in detail.The research progress on typical acid stimulants such as acetic acid,hydrochloric acid,sul-furic acid and phosphoric acid was described,as well as the activation ability of sulfate,silicate and aluminate as salt stimu-lants.On this basis,the advantages and disadvantages of three kinds of activators were summarized and analyzed.At the same time,by discussing the excitation principles of the three types of activators of acid,base and salt,it was further confirmed that the three types of activators had the ability to stimulate the activity of geopolymer raw materials,and could accelerate the hydration reaction process of geopolymerization system to different degrees,and significantly improved the strength of the geopolymer system.Finally,the future development of stimulants in the field of geopolymers was prospected.

Key words: geopolymer, stimulants, excitation principle, stimulating effect, hydration reaction

中图分类号:

TQ172

王磊,李金丞,张晓伟,张栋梁,王觅堂. 地质聚合物激发剂及其激发原理[J]. 无机盐工业, 2022, 54(2): 16-20.

WANG Lei,LI Jincheng,ZHANG Xiaowei,ZHANG Dongliang,WANG Mitang. Geopolymer activator and its excitation principle[J]. Inorganic Chemicals Industry, 2022, 54(2): 16-20.

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激发剂	原料	抗压强度/MPa
氢氧化钠^[5]	硅灰+粉煤灰	23.89
氢氧化钾^[5]	硅灰+粉煤灰	19.26
水玻璃^[8]	矿渣	60.10
氢氧化钠^[10]	煤矸石	21.27
氢氧化钠^[11]	粉煤灰	43.00
氢氧化钠+水玻璃^[12]	粉煤灰	109.84
氢氧化钠+水玻璃^[13]	粉煤灰+煤矸石	58.00

激发剂	原料	抗压强度/MPa
磷酸^[16]	偏高岭土	93.80
磷酸二氢铝^[17]	偏高岭土	53.07
磷酸^[18]	偏高岭土	166.73
乙酸^[20]	水泥	57.92
硫酸^[20]	水泥	54.67
盐酸^[23]	水泥	56.00
磷酸^[24]	硅铝酸盐	78.40

激发剂	原料	抗压强度/MPa
明矾^[27]	水泥熟料	34.00
硫酸钙^[28]	矿渣+石灰石	20.00
硫酸钠^[29]	粉煤灰+矿渣	25.80
硫酸钙^[30]	粉煤灰+水泥	60.50
氯化钙^[30]	粉煤灰+水泥	61.20
硅酸盐^[31]	沸石	43.00

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