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Graphene oxide magnetic orientation dispersion reinforced cement-based composite material and preparation method thereof

A composite material and cement-enhancing technology, applied in chemical instruments and methods, clay preparation devices, cement mixing devices, etc., can solve the problems of poor dispersion and low utilization efficiency of graphene oxide, achieve dense internal structure, promote hydration, The effect of good mechanical properties

Active Publication Date: 2022-07-26
TAIYUAN UNIV OF TECH
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Problems solved by technology

[0007] The purpose of the present invention is to provide a graphene oxide magnetic orientation dispersion reinforced cement-based composite material and its preparation method, aiming to solve the technical problems of poor dispersion and low utilization efficiency of graphene oxide in cement matrix

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  • Graphene oxide magnetic orientation dispersion reinforced cement-based composite material and preparation method thereof
  • Graphene oxide magnetic orientation dispersion reinforced cement-based composite material and preparation method thereof
  • Graphene oxide magnetic orientation dispersion reinforced cement-based composite material and preparation method thereof

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Embodiment Construction

[0034] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0035] A graphene oxide magnetically oriented dispersion reinforced cement-based composite material, the raw materials include: cement, graphene oxide, iron tetroxide (Fe 3 O 4 ) magnetic nanoparticles and water reducing agent, water; among them, cement, graphene oxide, Fe 3 O 4 The mass ratio of magnetic nanoparticles and water reducing agent is 100:(0.02~0.08):(0.1~0.4):(0.08~0.16), Fe 3 O 4 The mass of the magnetic nanoparticles is 5 times that of graphene oxide, and the water-cement ratio in the raw material of the graphene oxide magnetically oriented dispersion enhanced cement-based composite material is 0.5.

[0036] The present invention uses electrostatic self-assembly method to combine Fe 3 O 4 Magnetic nanoparticles and graphene oxide suspensions are premixed to form Fe 3 O 4 Magnetic nanoparticle-modified magnetic graphene...

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Abstract

The invention discloses a graphene oxide magnetically oriented dispersion reinforced cement-based composite material and a preparation method thereof; the composite material is prepared from the following raw materials: cement, graphene oxide, Fe 3 O 4 Magnetic nanoparticles, water reducing agent and water; among them, cement, graphene oxide, Fe 3 O 4 The mass ratio of magnetic nanoparticles and water reducing agent is 100: (0.02~0.08): (0.1~0.4): (0.08~0.16). The invention controls the orientation and spatial position of the graphene oxide nanosheets in the cement matrix by applying an external magnetic field, thereby realizing the controllable directional dispersion of the graphene oxide in the cement matrix to a certain extent, and the directionally arranged magnetic graphene oxide The improvement of the mechanical properties of cement-based composites plays a greater role, achieving the goal of using graphene oxide efficiently, reducing economic costs, and promoting the application of graphene oxide in actual construction projects.

Description

technical field [0001] The invention belongs to the technical field of inorganic materials of non-metallic elements, in particular to cement materials, in particular to a graphene oxide magnetically oriented dispersion reinforced cement-based composite material and a preparation method thereof. Background technique [0002] Cement is the most important raw material for concrete, and its production contributes nearly 10% of global carbon dioxide emissions. Considering that there is no good substitute for cement-based composite materials, it is very urgent to enhance the mechanical properties and durability of cement-based composite materials and improve their use efficiency. Concrete with high compressive strength has poor tensile strength and often leads to brittle failure. Under the action of external loads, micro-cracks are generated inside the concrete. Under the continuous action of external loads, the micro-cracks continue to merge and expand to form macro-cracks, whic...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00B28B1/08B28B13/02B28C5/00B28C5/08C04B14/02C04B14/30
CPCC04B28/00B28C5/006B28C5/08B28B13/02B28B1/08C04B14/024C04B14/308C04B2201/50C04B2103/302C04B22/002Y02W30/91
Inventor 刘双双李翔宇陈雅
Owner TAIYUAN UNIV OF TECH
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