A High-strength and Water-resistant Humidity-controlling Material Prepared by Modifying Diatomite with Vanadium- and Iron-containing Compound Slag
HU Mingyu1, FU Chao1, WEI Lili1,2, LIU Zhangjun1
1 Key Laboratory for Ultra-low Energy Building of Jiangxi Province, School of Civil Engineering and Architecture, NanchangUniversity, Nanchang 330031; 2 School of Architectural and Mechanical Engineering, Chifeng University, Chifeng 024000
Abstract: The new diatomite humidity-controlling material was prepared by using natural diatomite as raw materials, vana-dium- and iron-containing compound slag as inorganic modified admixture. It was cured in room temperature after simple compaction molding. The effect of the inorganic modified admixture content on strength, water resistance, and humidity-controlling performance of the diatomite humidity-controlling material were tested. Based on the micro-analysis of the scanning electron microscope and the absorption/desorption theory of materials, the modified mechanism and the humidity-controlling mechanism of the diatomite humidity-controlling material were investigated. The results showed that when the content of inorganic modified admixture was 15%—20%, the compressive strength, softening coefficient, the maximum equilibrium moisture content, and the maximum absorption and desorption rate of the diatomite humidity-controlling material at 60 d were 5.5—6.10 MPa, 0.62—0.74, 19.9%—20.8%, 0.069—0.073 kg/(kg·d) and 0.042—0.045 kg/(kg·d), respectively, which indicated that the material had an excellent performance. The hardening mechanism of the diatomite humidity-controlling material were ion exchange reaction, aggregate effect and hard coagulation reaction. The cellular microstructure of diatomite humidity-controlling material have the effects of capillary channel, chemical adsorption and surface physical adsorption on water vapor, which enable its excellent strength, water resistance and humidity-controlling performance.
胡明玉, 付超, 魏丽丽, 刘章君. 等钒铁渣复合物改性硅藻土制备高强耐水调湿材料[J]. 《材料导报》期刊社, 2018, 32(8): 1230-1235.
HU Mingyu, FU Chao, WEI Lili, LIU Zhangjun. A High-strength and Water-resistant Humidity-controlling Material Prepared by Modifying Diatomite with Vanadium- and Iron-containing Compound Slag. Materials Reports, 2018, 32(8): 1230-1235.
1 Deng Ni, Wu Shuanglei, Chen Huxing. Overview on research of humidity-controlling materials[J].Materials Review,2013,27(S2):368(in Chinese). 邓妮,武双磊,陈胡星.调湿材料的研究概述[J].材料导报,2013,27(S2):368. 2 Lei Panpan, Wei Jiangxiong, Yu Qijun, et al. Study on the modification of natural mordenite and its humidity performance[J].Journal of Wuhan University of Technology,2013,12(12):15(in Chinese). 雷盼盼,韦江雄,余其俊,等.沸石改性及调湿性能研究[J].武汉理工大学学报,2013,12(12):15. 3 Li Xiaoli. Study on preparation and application in coating of humidity-controlling composite material[D].Quanzhou:Huaqiao University,2008(in Chinese). 李晓丽.复合调湿材料的制备及其在涂料中的应用研究[D].泉州:华侨大学,2008. 4 Li Wei, Zhang Jian, Li Na, et al. Preparation and properties of functional coating with diatomite loading titanium[J].Journal of Functional Materials,2015,22(8):141(in Chinese). 李炜,张健,李娜,等.载钛硅藻土功能涂料的制备及性能[J].功能材料,2015,22(8):141. 5 Wang Hanqing, Yi Hui, Li Duanru, et al. Experimental research on sepiolite humidity-controlling coating’s preparation and humidity performance[J].Building Science,2014,12(7):60(in Chinese). 王汉青,易辉,李端茹,等.海泡石调湿涂料配制及调湿性能试验研究[J].建筑科学,2014,12(7):60. 6 Yang Hailiang, Peng Zhiqin, Zhou Yang, et al. Preparation and performances of a novel intelligent humidity control composite material[J].Energy and Buildings,2011,43:386. 7 Gonzalez J C, Molina-Sabio M, Rodrguez-Reinoso F. Sepiolite-based adsorbents as humidity controller[J].Applied Clay Science,2001,20:111. 8 Wang Jihui, Li Yan, Zhang Ziyang. Synthesis and humidity controlling behaviors of attapulgite/polyacrylic acid composite[J].Chinese Journal of Materials Research,2010,2(9):113(in Chinese). 王吉会,李燕,张子洋.凹凸棒粘土/聚丙烯酸复合材料的制备与调湿性能[J].材料研究学报,2010,2(9):113. 9 Sajo P Naik, Anthony S T Chiang, Thompson R W. Synthesis of zeolitic mesoporous materials by dry gel conversion under controlled humidity[J].Physical Chemistry B,2003,107:7006. 10 Dong Fei. Synthesis and humidity controlling properties of mineral/poly(sodium acrylate-acrylamide)composite[D].Tianjin:Tianjin University,2014(in Chinese). 董飞.三种无机矿物/聚(丙烯酸-丙烯酰胺)调湿复合材料的制备及性能研究[D].天津:天津大学,2014. 11 Jiang Zhengwu, Zeng Zhiyong. Effect of acidizing conditions on humidity-controlling properties of sepiolite[J].Journal of Tongji University(Nature Science),2008,12(12):1674(in Chinese). 蒋正武,曾志勇.酸化条件对海泡石调湿性能的影响[J].同济大学学报(自然科学版),2008,12(12):1674. 12 Vu D H, Wang K S, Bac B H, et al. Humidity control materials prepared from diatomite and volcanic ash[J].Construction and Building Materials,2013,38:1066. 13 Chen Guanyi, Bai Xiaoling, Zhang Xiumei, et al. Research on cha-racteristics of biomass-based humidity-controlling materials[J].Heating Ventilating and Air Conditioning,2007,37(11):14(in Chinese). 陈冠益,白晓玲,张秀梅,等.生物质基调湿材料的特性研究[J].暖通空调,2007,37(11):14. 14 Li Xin, Li Huiling, Feng Weihong, et al. Effect of different hygroscopicity groups on moisture absorption/release of polymer humidity control materials[J].Journal of Central South University(Science and Technology),2011,1(4):28(in Chinese). 李鑫,李慧玲,冯伟洪,等.不同吸湿官能团对高分子调湿材料吸湿和放湿性能的影响[J].中南大学学报(自然科学版),2011,1(4):28. 15 Tian Ying. Preparation and performance on the diatom styrene-acry-lic internal wall coating[D].Shenyang:Shenyang Jianzhu University,2014(in Chinese). 田莹.硅藻基苯丙内墙涂料的制备与性能[D].沈阳:沈阳建筑大学,2014. 16 Lv Rongchao. Fundamental researches of sepiolite, diatomite and zeolite as humidity control building materials[D].Beijing:China Building Materials Academy,2005(in Chinese). 吕荣超.海泡石、硅藻土、沸石、作为调湿建筑材料的基础研究[D].北京:中国建筑材料科学研究院,2005. 17 Yuan Peng, Wu Daqing, Lin Zhongyu. Study on the surface hydroxyl species of diatomite using DRIFT spectroscopy[J].Spectroscopy and Spectral Analysis,2001,21(6):783(in Chinese). 袁鹏,吴大清,林种玉.硅藻土表面羟基的漫反射红外光谱(DRIFT)研究[J].光谱学与光谱分析,2001,21(6):783. 18 Wang R M, Wang J F, Wang X W, et al. Preparation of acrylate-based copolymer emulsion and its humidity controlling mechanism in interior wall coatings[J].Progress in Organic Coatings,2011,71(4):369. 19 Ke Shujun. Study on the new raw soil materials[D].Nanchang:Nanchang University,2015(in Chinese). 柯书俊.新型生土材料研究[D].南昌:南昌大学,2015. 20 Jiang Zhengwu. Research progress of humidity controlling materials[J].Materials Review,2006,10(2):8(in Chinese). 蒋正武.调湿材料的研究进展[J].材料导报,2006,10(2):8.