聚焦于新疆煤气化渣(CGS)的资源化利用,以环氧树脂为基体,通过模压法制备煤气化渣/环氧树脂复合材料。通过X射线衍射仪(XRD)分析CGS的矿物组成。借助傅里叶变换红外光谱仪(FT-IR)、万能力学试验机、邵氏硬度仪、扫描电子显微镜(SEM)、吸水率测试和动态热机械分析仪(DMA)等多种分析手段,讨论CGS含量对复合材料内部结构、力学性能、微观形貌、吸水率及热稳定性的影响。结果表明:CGS主要由石英、钙长石等组成;复合材料部分红外吸收峰位置发生位移。75% CGS时,复合材料的弯曲强度(61.8MPa)和硬度(94.5HD)达到最佳;75% CGS时复合材料的断裂面质密且平整,无明显孔洞存在。复合材料的吸水率随着CGS含量的增加,呈现出上升趋势。复合材料比纯环氧树脂材料的储能模量提高,玻璃化转变温度降低,并且随着CGS含量的增加,复合材料储能模量和玻璃化转变温度逐渐下降。
Focusing on the resource utilization of coal gasification slag (CGS) in Xinjiang,this paper prepared coal gasification slag/epoxy resin composite materials through a molding process using epoxy resin as matrix.The mineral composition of CGS was investigated using an X-ray diffraction (XRD),and the composites were investigated by using the Fourier transform infrared spectroscopy (FT-IR),universal mechanical tester,Shore hardness tester,scanning electron microscope (SEM),water absorption test,and dynamic thermo-mechanical analyzer (DMA) to discuss the effects of CGS content on the internal structure,mechanical properties,micro-morphology,water absorption,and thermal stability of the composites.The results showed that CGS was mainly composed of quartz and anorthite.The positions of some FT-IR absorption peaks of the composite material were shifted.The flexural strength (61.8MPa) and hardness (94.5HD) of the composite was the best at 75% CGS content.At 75% CGS content,the fracture surface of the composite was dense and flat,with no obvious pores present.The water absorption of the composites increased with the increase of CGS content.The storage modulus of the composite increased and the glass transition temperature decreased compared to the pure epoxy resin materials,and at the same temperature,the storage modulus and glass transition temperature of the composite material gradually decreased with the increase of CGS content.
[1] 滕吉文,乔勇虎,宋鹏汉.我国煤炭需求、探查潜力与高效利用分析[J].地球物理学报,2016,59(12):4633-4653.
[2] 王佟,刘峰,赵欣,等.“双碳”背景下我国煤炭资源保障能力与勘查方向的思考[J].煤炭科学技术,2023,51(12):1-8.
[3] 潘月军.新形势下我国煤炭资源高效清洁利用途径分析[J].洁净煤技术,2023,29(S2):807-809.
[4] Lv Bo,Deng Xiaowei,Jiao Feishuo,et al.Enrichment and utilization of residual carbon from coal gasification slag:a review[J].Process Safety and Environmental Protection,2023,171:859-873.
[5] 刘艳丽,李强,陈占飞,等.煤气化渣特性分析及综合利用研究进展[J].煤炭科学技术,2022,50(11):251-257.
[6] 吴锦文,邓小伟,焦飞硕,等.煤基灰/渣的大宗固废资源化利用现状及发展趋势[J].煤炭科学技术,2024,52(6):238-252.
[7] Luo Feng,Jiang Yinshan,Wei Cundi.Potential of decarbonized coal gasification residues as the mineral admixture of cement-based material[J].Construction and Building Materials,2021,269:121259.
[8] Fu Bo,Cheng Zhenyun,Wang Dezhi,et al.Investigation on the utilization of coal gasification slag in Portland cement:reaction kinetics and microstructure[J].Construction and Building Materials,2022,323:126587.
[9] Shi Zhaochen,Shu Yixiang,Wang Zongyi,et al.Emission characteristics of coal gasification fine slag direct combustion and co-firing with coal[J].Journal of Environmental Management,2023,344:18498.
[10] Guo Yang,Guo Fanhui,Zhou Lu,et al.Investigation on co-combustion of coal gasification fine slag residual carbon and sawdust char blends:physiochemical properties,combustion characteristic and kinetic behavior[J].Fuel,2021,292:120387.
[11] 陈嘉懿,牛纪达,吕剑桥,等.煤气化渣对矿山废水中黄药的吸附性能研究[J].矿产综合利用,2024,45(2):190-200.
[12] 顾彧彦,乔秀臣.煤气化细渣制备碳硅复合材料吸附去除水中Pb2+[J].化工环保,2019,39(1):87-93.
[13] Xiang Yulin,Xiang Yuxiu,Gao Xuchun.Humic acid coupled with coal gasification slag for enhancing the remediation of Cd-contaminated soil under alternated light/dark cycle.[J].Environmental Science and Pollution Research International,2022,30(1):1276-1287.
[14] Zhang Yixin,Wang Rumeng,Qiu Guofeng,et al.Synthesis of porous material from coal gasification fine slag residual carbon and its application in removal of methylene blue[J].Molecules,2021,26(20):6116.
[15] Miao Zekai,Guo Zhenkun,Qiu Guofeng,et al.Synthesis of activated carbon from high-ash coal gasification fine slag and their application to CO2 capture[J].Journal of CO2 Utilization,2021,50:101585.
[16] Lal L P J,Ramesh S,Parasuraman S,et al.Compression after impact behaviour and failure analysis of nanosilica-toughened thin epoxy/GFRP composite laminates[J].Materials,2019,12(19):3057.
[17] Xu H,Tian G,Meng Y,et al.Cure kinetics of a nadic methyl anhydride cured tertiary epoxy mixture[J].Thermochimica Acta,2021,701:178942.
[18] 周安宁,高影,李振,等.煤气化灰渣组成结构及分选加工研究进展[J].西安科技大学学报,2021,41(4):575-584.
[19] Ma Chuandong,Li Xiaoteng,Lyu Jianqiao,et al.Study on characteristics of coal gasification fine slag-coal water slurry slurrying,combustion,and ash fusion[J].Fuel,2023,332:126039.
[20] 于凯伦,王博,韩庆,等.不同钛酸四丁酯含量对GO-TiO2复合材料组织结构和性能的影响[J].工程科学学报,2022,44(8):1360-1367.
[21] 王志学,王彩丽,王斌,等.Mg(OH)2@粉煤灰复合材料对重金属离子的去除研究[J].中国环境科学,2022,42(12):5713-5724.
[22] Li Kangli,Teng Yanhua,Wang Kerui,et al.Mechanical activation of coal gasification fine slag and mechanical and thermal properties of coal gasification fine slag-poly(vinyl chloride) composites[J].Materials Research Express,2023,10(9):095301.
[23] Ding Guoxin,Hu Yuexiang,Liu Jun,et al.Effects of modified coal gasification fine slag on the processing and mechanical properties of natural rubber composites[J].Polymer Composites,2024,45(12):10839-10851.
[24] Guzel G,Deveci H.Properties of polymer composites based on bisphenol A epoxy resins with original/modified steel slag[J].Polymer Composites,2018,39(2):513-521.
[25] Hayajneh Mohammed T,AL-Oqla Faris M,Al-Shrida Mu'ayyad M.Hybrid green organic/inorganic filler polypropylene composites:morphological study and mechanical performance investigations[J].e-Polymers,2021,21(1):710-721.
[26] Gokhan A,Kaan S,Selçuk Ö,et al.The effect of hydrophobic coating applied to mica reinforced epoxy matrix composites on the water absorption properties of the composite[J].Polymer Bulletin,2023,81(7):6207-6224.
[27] Mittal P,Naresh S,Luthra P,et al.Polypropylene composites reinforced with hybrid inorganic fillers:morphological,mechanical,and rheological properties[J].Journal of Thermoplastic Composite Materials,2019,32(6):848-864.
[28] 闫锦锦,司军辉,崔志香.玄武岩纤维/玄武岩颗粒增强高密度聚乙烯复合材料性能[J].工程塑料应用,2024,52(5):65-71.
基金资助
新疆科技厅重点研发项目(2023B01014)伊犁师范大学科研创新团队培育计划项目(CXZK2021002)
PDF
