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Preparation method of graphene oxide modified polymer cement waterproof coating

A graphene-modified, waterproof coating technology, applied in the field of preparation of polymer cement waterproof coatings, can solve the problems of restricting the promotion and application of coatings, poor durability, and unsatisfactory mechanical properties, so as to achieve impermeability and improve overall performance performance, good mechanical properties and durability

Active Publication Date: 2013-08-14
佛山市福地斯建筑防水材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still problems such as unsatisfactory mechanical properties, poor impermeability, and poor durability, which seriously limit the promotion and application of this type of coating.

Method used

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  • Preparation method of graphene oxide modified polymer cement waterproof coating
  • Preparation method of graphene oxide modified polymer cement waterproof coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Step 1: the preparation of graphene oxide:

[0033] Add 50 parts by mass of concentrated sulfuric acid with a mass fraction of 98%, 5 parts by mass of graphite powder and 5 parts by mass of sodium nitrate into the reactor, stir and control the temperature of the system to be less than 10°C, then add 18 parts by mass of high Potassium manganate is added to the reactor in batches, and the addition is completed within 1.5 hours; the temperature is raised to 35°C for 9 hours, and then the temperature is raised to 80°C for 1 hour, and then 600 parts of deionized water are added within 10 minutes; finally, the mass fraction is added dropwise 30% hydrogen peroxide until no bubbles are generated; vacuum filter, wash until the pH value is 7, and ultrasonically disperse for 2 hours to obtain a graphene oxide solution, and control its mass fraction to 0.65%;

[0034] Step 2: Preparation of Acrylic Polymer Emulsion:

[0035] Add 3.2 parts by mass of sodium lauryl sulfate, 4.0 part...

Embodiment 2

[0042] Step 1: the preparation of graphene oxide:

[0043] Add 50 parts by mass of concentrated sulfuric acid with a mass fraction of 98%, 5 parts by mass of graphite powder and 5 parts by mass of sodium nitrate into the reactor, stir and control the temperature of the system to be less than 10°C, then add 18 parts by mass of high Potassium manganate is added to the reactor in batches, and the addition is completed within 1.5 hours; the temperature is raised to 35°C for 9 hours, and then the temperature is raised to 80°C for 1 hour, and then 600 parts of deionized water are added within 10 minutes; finally, the mass fraction is added dropwise 30% hydrogen peroxide until no bubbles are generated; vacuum filter, wash until the pH value is 7, and ultrasonically disperse for 2 hours to obtain a graphene oxide solution, and control its mass fraction to 0.65%;

[0044] Step 2: Preparation of Acrylic Polymer Emulsion:

[0045] Add 3.2 parts by mass of sodium lauryl sulfate, 4.0 part...

Embodiment 3

[0052] Step 1: the preparation of graphene oxide:

[0053] Add 50 parts by mass of concentrated sulfuric acid with a mass fraction of 98%, 5 parts by mass of graphite powder and 5 parts by mass of sodium nitrate into the reactor, stir and control the temperature of the system to be less than 10°C, then add 18 parts by mass of high Potassium manganate is added to the reactor in batches, and the addition is completed within 1.5 hours; the temperature is raised to 35°C for 9 hours, and then the temperature is raised to 80°C for 1 hour, and then 600 parts of deionized water are added within 10 minutes; finally, the mass fraction is added dropwise 30% hydrogen peroxide until no bubbles are generated; vacuum filter, wash until the pH value is 7, and ultrasonically disperse for 2 hours to obtain a graphene oxide solution, and control its mass fraction to 0.65%;

[0054] Step 2: Preparation of Acrylic Polymer Emulsion:

[0055] Add 3.2 parts by mass of sodium lauryl sulfate, 4.0 part...

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Abstract

The invention relates to a preparation method of a graphene oxide modified polymer cement waterproof coating. At present, the main problems which obstruct the development of a polymer cement waterproof coating are as follows: the mechanical property is not ideal, the water permeability resistance and the durability are poor and the like. The preparation method comprises the steps of: mixing concentrated sulfuric acid, a graphite powder and sodium nitrate to carry out reaction, adding potassium permanganate and hydrogen peroxide into a reactant, dispersing a mixture to obtain a graphene oxide solution; mixing sodium dodecyl sulfate, AEO (Alcohol Polyoxyethylene Ether)-9, dodecyl mercaptan, sodium bicarbonate and deionized water, and dripping an initiator solution and a mixed monomer into a mixture to obtain acrylate polymer emulsion; and adding a calcite powder or a talcum powder, amino silicone oil, n-octanol, a preservative, a polycarboxylic acid type water-reducer and the graphene oxide solution into the acrylate polymer emulsion, adding cement into a mixture to obtain a product. With the adoption of the preparation method, the mechanical property and the water resistance of the graphene oxide modified polymer cement waterproof coating are greatly improved, and the graphene oxide modified polymer-cement waterproof coating is good in the durability and the anti-permeability and has wide application prospect.

Description

technical field [0001] The invention relates to a preparation method of a polymer cement waterproof coating, in particular to a preparation method of a graphene oxide modified polymer cement waterproof coating. Background technique [0002] Polymer cement waterproof coating is a two-component water-based architectural waterproof coating made of acrylic polymer emulsion and cement as the main raw materials and other admixtures. The products are divided into Type I and Type II. Type I is mainly polymer, which is mainly used for building waterproofing projects in non-long-term flooding environments; Type II is mainly cement, and is mainly used for building waterproofing projects in long-term flooding environments. . This kind of coating not only has the extensibility and water resistance of polymer coating film, but also has the advantages of high strength of water-based gelling material and easy bonding with wet base. However, there are still problems such as unsatisfactory...

Claims

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Application Information

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IPC IPC(8): C04B28/00
Inventor 吕生华巨浩波周庆芳
Owner 佛山市福地斯建筑防水材料有限公司
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