胺功能化氧化石墨烯对水泥基复合材料性能的影响

doi:10.19964/j.issn.1006-4990.2022-0312

Abstract

Abstract:

Agglomeration of graphene oxide（GO） in cementitious solutions affects the mechanical enhancement of cement composite.In order to solve the problem of dispersibility of GO in the cement paste，GO was chemically functionalized with triethanolamine（TEOA-GO），then the GO cement-based composites（GO/C） and TEOA-GO cement-based composites（TEOA-GO/C） were prepared.The structure and surface morphology of sample were characterized by X-ray diffraction（XRD），scanning electron microscope（SEM），fourier transform infrared spectrometer（FTIR）.The results indicated that TEOA-GO had better dispersibility in Ca（OH）₂ solution than GO.The results of mechanical strength showed that 0.03%TEOA-GO was doped into the composites，the 28 d flexural strength of TEOA-GO/C were 7.96 MPa，which were increased by 15.3% and 5.43%，respectively，compared to the control and GO/C.When it was doped with 0.05% TEOA-GO，the 28 d compressive strength of TEOA-GO/C was 74.14 MPa，which was 40.68% and 11.99% higher than that of the control and GO/C，respectively.SEM results further showed that the addition of TEOA-GO was beneficial to improve the hydration degree of cement，hindered the expansion of cracks and enhanced the mechanical properties of cement.

Key words: triethanolamine, graphene oxide, cement, agglomeration

CLC Number:

TU599

ZHAO Liping, WANG Fei. Effect of amine-functionalized graphene oxide on mechanical properties of cement composites[J]. Inorganic Chemicals Industry, 2023, 55(3): 66-70.

Figures/Tables 8

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项目	化学成分质量分数/%							LOI
项目	CaO	SiO₂	Al₂O₃	MgO	Fe₂O₃	SO₃	K₂O	LOI
水泥	60.33	23.24	6.16	1.36	4.41	0.35	—	0.56

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Inorganic Acid-Base-Salt Committee of CIESC

Effect of amine-functionalized graphene oxide on mechanical properties of cement composites

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