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楊興春 ，吳    淵 ，孫志高 ，張棟梁 ，王覓堂

（上海理工大學 材料與化學學院 ，上海 200093)

摘   要： 本研究使用了兩種不同的發泡劑（雙氧水和鋁粉，以氫氧化鈉為激發劑，以富鎂鎳渣和粉煤灰 為原料 ，制備了多孔地質聚合物 。從干密度、抗壓強度、導熱系數、吸水率等方面考察了發泡劑種類和含量對富鎂鎳渣－粉煤灰基多孔地質聚合物性能的影響 。利用 X 射線衍射  ( XRD)、傅里葉變換紅外光譜  ( FT-IR) 探究了多孔地質聚合物的水化產物 。研究發現兩種發泡劑都能成功制備多孔地質聚合物，隨著發泡劑含量增加， 多孔地質聚合物的干密度、抗壓強度和導熱率逐漸減低，吸水率逐漸上升 。在發泡劑的作用下堿基地質聚合物  內部形成了多孔結構，且發泡劑并不影響地質聚合反應的產物 。本研究證明兩種發泡劑都可以用來制備堿激發富鎂鎳渣－粉煤灰多孔地質聚合物，為富鎂鎳渣地聚物應用提供了參考。

關鍵詞： 多孔地質聚合物； 富鎂鎳渣； 粉煤灰； 雙氧水； 鋁粉

中圖分類號： TU528      

文獻標志碼： A      

文章編號： 1005-8249 (2023) 03-0012-07

DOI : 10. 19860/j.cnki.issn1005-8249.2023.03.012

YANG Xingchun , WU Yuan , SUN Zhigao , ZHANG Dongliang , WANG Mitang

( School of Materials and Chemistry , University of Shanghai for Science and Technology , Shanghai 200093 , China)

Abstract：Porous geopolymers were prepared by using two different foaming agents (H2O2 and Al powder), NaOH as the activator, high magnesium nickel slag and fly ash as raw materials. The effects of foaming agent type and content on the properties of high magnesium nickel slag -fly ash based porous geopolymers were investigated from dry density, compressive strength, thermal conductivity and water absorption. The hydration products of porous geopolymer were investigated by X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). It was found that porous geopolymers could be prepared successfully with both kinds of foaming agents. The dry density, compressive strength and thermal conductivity of porous geopolymers decreased, and the water absorption increased gradually with the increase of foaming agent content. The geopolymer has a porous structure with the addition of foaming agent, and the foaming agent does not affect the products of the geopolymer reaction. This study proves that the two foaming agents can be used to prepare porous geopolymers with high magnesium nickel slag and fly ash, which provides a reference for the application of high magnesium nickel slag.

Keywords : porous geopolymers ; high magnesium nickel slag; fly ash; H2 O2 ; Al powder

?基金項目：國家自然科研基金項目  (51974168 , 51662033)

作者簡介：楊興春  (1997—), 男，碩士。主要研究方向： 固廢利用，地質聚合物。

通信作者：王覓堂  (1982—) , 男，博士，教授 。主要從事無機非金屬材料研究。

收稿日期： 2023-03-09