Environment-friendly graphene oxide mortar and preparation method thereof

A graphene and environmental-friendly technology, applied in the direction of graphene, single-layer graphene, chemical instruments and methods, etc., can solve the problems that the particle size range of graphene oxide is not easy to control, affects the mechanical properties and durability of mortar, and environmental pollution, etc. , to achieve the effect of eliminating ultrasonic dispersion equipment, reducing the preparation process links, and avoiding the risk of environmental pollution

Inactive Publication Date: 2020-06-16
重庆高途新材料科技有限公司
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 1. The risk of serious environmental pollution is mainly reflected in: the oxidation process of graphite needs to consume a large amount of concentrated sulfuric acid and potassium permanganate at the same time, and the typical ratio of graphite to the two reaction substances is 1:40 and 1:3 respectively; the reaction ends Then it needs to consume a lot of water to elute it from graphite oxide, resulting in the preparation of graphene oxide is usually accompanied by the discharge of a large amount of waste water containing acid and heavy metal ions, and its ratio usually reaches more than 1:1000
[0009] 2. Due to the presence of impurities, the cost of recycling waste acid is high, which is one of the main reasons for the high price of graphene oxide
[0010] 3. The particle size range of graphene oxide is not easy to control, which affects the mechanical properties and durability of mortar, etc.
[0012] Therefore, using graphene oxide prepared by traditional chemical oxidation method to produce graphene oxide mortar on a large scale will not only cause serious environmental pollution risks, but also be expensive, which is not conducive to the industrialization and engineering application of graphene oxide mortar

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Environment-friendly graphene oxide mortar and preparation method thereof
  • Environment-friendly graphene oxide mortar and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1: Test of the influence of graphene oxide content on the compressive strength and flexural strength of mortar.

[0033] Examples of graphene oxide mortar and the ratio of raw materials are shown in Table 1.

[0034] Table 1

[0035]

[0036] The polycarboxylic acid high-performance water reducing agent powder in this embodiment is Sika VisCocrete-540. Other polycarboxylic acid high-performance water reducing agent powders with similar properties can also be used.

[0037] The 28-day compressive strength and flexural strength of the mortars numbered M0-M3 are shown in Table 2.

[0038] Table 2

[0039]

[0040] The results show that: for the cement-based environment, the graphene oxide is dispersively treated, and the 28-day compressive strength and flexural strength of the mortar under the optimized dosage and the ratio of graphene oxide and polycarboxylate high-performance water-reducing agent powder Both have been improved, as follows:

example M1

[0041] Example M1: The compressive strength of mortar increased from 58.52MPa (reference mortar) to 66.70MPa, an increase of 13.96%; the flexural strength increased from 8.73MPa (reference mortar) to 9.55MPa, an increase of 9.43%.

example M2

[0042] Example M2: The compressive strength of the mortar increased from 58.52MPa (reference mortar) to 70.56MPa, an increase of 20.55%; the flexural strength increased from 8.73MPa (reference mortar) to 9.55MPa, an increase of 14.58%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
densityaaaaaaaaaa
Login to view more

Abstract

The invention discloses environment-friendly graphene oxide mortar, which is prepared from the following raw materials in parts by mass: 1 part of cement, 0.4 parts of water, 3 parts of natural riversand, 0.0015-0.003 parts of polycarboxylic acid high-performance water reducing agent powder and 0.0001-0.001 parts of graphene oxide. The preparation method comprises the following steps: (1) preparing a graphene oxide solution; (2) preparing a mixed solution containing graphene oxide mortar; and (3) preparing environment-friendly graphene oxide mortar. The preparation method of the graphene oxide solution comprises the following steps: (I) obtaining a low-order intercalation intercalated graphite continuous material; (II) by taking the intercalated graphite continuous material as an anode and a platinum wire as a cathode, introducing direct current with the voltage of 5V into an electrolyte solution for electrolytic stripping for about 1 minute to obtain graphite oxide; and (III) cleaning up dilute sulfuric acid adsorbed on the graphite oxide through distilled water, and conducting ultrasonic dispersion treatment in water, thereby obtaining the graphene oxide solution.

Description

Technical field [0001] The invention relates to the technical field of concrete production, in particular to an environmentally friendly graphene oxide mortar and a method for preparing the mortar. Background technique [0002] Cement mortar is one of the most important building materials in the field of construction engineering. It has high compressive strength, but high brittleness and low tensile strength. In recent years, the use of graphene oxide to improve the performance of cement mortar has achieved very gratifying results. Studies have shown that the combination of graphene oxide and cement mortar has significantly improved the mechanical properties and impermeability of cement mortar. [0003] At present, the preparation of a typical graphene oxide mortar mainly includes the following three main procedures: [0004] 1. Graphene oxide prepared by traditional chemical oxidation method: Among the traditional chemical oxidation methods, the most commonly used are many improved...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B14/02C01B32/198
CPCC01B2204/02C01B2204/28C01B2204/30C04B14/024C04B28/04C04B2111/00008C04B2111/00017C04B2201/50C01B32/198C04B14/068C04B2103/302
Inventor 吴玉友刘长江郑周练陈松
Owner 重庆高途新材料科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap