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Preparation method of graphene oxide modified polymer cement waterproof coating

A graphene-modified, waterproof coating technology, which is applied in the field of preparation of polymer cement waterproof coatings, can solve the problems of low durability, low mechanical strength and limited effect of coatings, and improve the overall performance, impermeability and environmental protection. friendly effect

Active Publication Date: 2014-12-03
河北燕园众欣石墨烯科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because acrylate polymers are organic substances, they have limited effect on the problems of low durability and mechanical strength that have plagued the development of polymer cement waterproof coatings for a long time.

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

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example 1

[0021] The preparation method of graphene oxide modified polymer cement waterproof coating of the present invention is realized by following steps:

[0022] 1) Preparation of graphene oxide:

[0023] According to the number of parts by mass, slowly add 50 parts of concentrated sulfuric acid to the mixture of 5 parts of graphite powder and 5 parts of sodium nitrate under stirring, control the temperature of the system to be less than 10°C, and slowly add 18 parts of potassium permanganate after adding and stirring evenly, and then React at 35°C for 9 hours, heat up to 80°C and react for 1 hour, then slowly add 600 parts of deionized water, then add hydrogen peroxide with a concentration of 30%, react until no bubbles are generated, filter, wash, and use 30 % NaOH to adjust the pH to 7, and obtain a graphene oxide solution by ultrasonication for 2 hours;

[0024] 2) Preparation of graphene oxide modified polymer cement waterproof coating:

[0025] According to the liquid-powde...

example 2

[0027] 1) Preparation of graphene oxide:

[0028] According to the number of parts by mass, slowly add 50 parts of concentrated sulfuric acid to the mixture of 5 parts of graphite powder and 5 parts of sodium nitrate under stirring, control the temperature of the system to be less than 10°C, and slowly add 18 parts of potassium permanganate after adding and stirring evenly, and then React at 35°C for 9 hours, heat up to 80°C and react for 1 hour, then slowly add 600 parts of deionized water, then add hydrogen peroxide with a concentration of 30%, react until no bubbles are generated, filter, wash, and use 30 % NaOH to adjust the pH to 7, and obtain a graphene oxide solution by ultrasonication for 2 hours;

[0029] 2) Preparation of graphene oxide modified polymer cement waterproof coating:

[0030] According to the liquid-powder ratio of 1:2, 352 parts of calcite powder, 3 parts of n-octanol, 3 parts of preservatives, 3 parts of polycarboxylate water reducer, and 20 parts of ...

example 3

[0032] 1) Preparation of graphene oxide:

[0033] According to the number of parts by mass, slowly add 50 parts of concentrated sulfuric acid to the mixture of 5 parts of graphite powder and 5 parts of sodium nitrate under stirring, control the temperature of the system to be less than 10°C, and slowly add 18 parts of potassium permanganate after adding and stirring evenly, and then React at 35°C for 9 hours, heat up to 80°C and react for 1 hour, then slowly add 600 parts of deionized water, then add hydrogen peroxide with a concentration of 30%, react until no bubbles are generated, filter, wash, and use 30 % NaOH to adjust the pH to 7, and obtain a graphene oxide solution by ultrasonication for 2 hours;

[0034] 2) Preparation of graphene oxide modified polymer cement waterproof coating:

[0035] According to the liquid-powder ratio of 1:2, add 212 parts of quartz powder, 2 parts of amino silicone oil, 2 parts of preservatives, 2 parts of polycarboxylate water reducer, and ...

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Abstract

The invention relates to a preparation method of a graphene oxide modified polymer cement waterproof coating. The polymer cement waterproof coating is a double-component water-based building waterproof coating mainly prepared from acrylic polymer emulsion and cement as well as other additives; the main problems influencing the development of the polymer cement waterproof coating are non-ideal mechanical property, poor permeability resistance and durability and the like and popularization and application of the coating are seriously limited. According to the invention, the tensile strength of a film prepared from the acrylic polymer emulsion is obviously increased by utilizing the excellent mechanical property of graphene oxide and the water resisting property is also increased to a certain degree; furthermore, abundant oxygen-containing functional groups of graphene oxide are capable of adjusting growth of cement hydration product crystals and increasing tensile strength and toughness of cement hydration products; and therefore, the graphene oxide modified polymer cement waterproof coating disclosed by the invention has good durability, anti-permeability and physical and mechanical properties and is wide in 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. technical background [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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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B22/02
Inventor 吕生华巨浩波
Owner 河北燕园众欣石墨烯科技有限公司
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