Alkali-activated geopolymer coating, and preparation method and use thereof

Patent metadata

Field	Value
Publication number	US-2024262747-A1
Application number	US-202418408776-A
Country	US
Kind code	A1
Filing date	Jan 10, 2024
Priority date	Jan 10, 2023
Publication date	Aug 8, 2024
Grant date	—

Abstract

Disclosed are an alkali-activated geopolymer coating, and a preparation method and use thereof. The alkali-activated geopolymer coating, is prepared by raw materials including the following components: an aluminosilicate mineral, an alkali activator, and a performance additive; wherein the aluminosilicate mineral comprises fly ash, slag, and metakaolin; the performance additive comprises a polymer powder, titanium dioxide, a silicone defoamer, and a water-reducing admixture; and a mass ratio of the aluminosilicate mineral, the alkali activator, and the performance additive is in a range of 100:(60-80):(4-15).

First claim

What is claimed is:

1 . An alkali-activated geopolymer coating, prepared by raw materials consisting of the following components: an aluminosilicate mineral, an alkali activator, and a performance additive;
wherein the aluminosilicate mineral is consisted of fly ash, slag, and metakaolin; the performance additive is consisted of a polymer powder, titanium dioxide, a silicone defoamer, and a water-reducing admixture; a mass ratio of the aluminosilicate mineral, the alkali activator, and the performance additive is in a range of 100:(60-80):(4-15); a mass ratio of the fly ash, the slag, and the metakaolin in the aluminosilicate mineral is in a range of (40-60):(20-40):(10-30); a mass ratio of the polymer powder to the aluminosilicate mineral is in a range of (1-5):100; and a mass ratio of the titanium dioxide to the aluminosilicate mineral is in a range of (3-8):100.

2 . (canceled)

3 . (canceled)

4 . (canceled)

5 . The alkali-activated geopolymer coating of claim 1 , wherein an amount of the silicone defoamer accounts for 0.1% to 0.3% of a total mass of the aluminosilicate mineral and the alkali activator.

6 . The alkali-activated geopolymer coating according to claim 1 , wherein a mass ratio of the water-reducing admixture to the aluminosilicate mineral is in a range of (0.5-1):100.

7 . The alkali-activated geopolymer coating of claim 1 , wherein the alkali activator is prepared from sodium silicate, sodium hydroxide, and water.

8 . The alkali-activated geopolymer coating of claim 1 , wherein the alkali activator has a modulus of 1.0 to 2.0.

9 . A method for preparing the alkali-activated geopolymer coating of claim 1 , comprising:
mixing the fly ash, the slag, the metakaolin, the polymer powder, and the titanium dioxide to obtain a mixed powder; and mixing the mixed powder, the alkali activator, and the silicone defoamer to obtain a mixture, and then mixing the mixture with the water-reducing admixture to obtain the alkali-activated geopolymer coating.

10 . (canceled)

11 . The geopolymer coating of claim 7 , wherein the alkali activator has a modulus of 1.0 to 2.0.

12 . The method of claim 9 , wherein an amount of the silicone defoamer accounts for 0.10% to 0.3% of a total mass of the aluminosilicate mineral and the alkali activator.

13 . The method of claim 9 , wherein a mass ratio of the water-reducing admixture to the aluminosilicate mineral is in a range of (0.5-1):100.

14 . The method of claim 9 , wherein the alkali activator is prepared from sodium silicate, sodium hydroxide, and water.

15 . The method of claim 9 , wherein the alkali activator has a modulus of 1.0 to 2.0.

Assignees

• Univ Shenzhen

Inventors

• Zhou Yingwu
• Xing Feng
• Guo Wenhui
• Hu Biao
• Guo Menghuan
• Huang Xiaoxu
• Zhu Zhongfeng

Classifications

• C04B2111/26

  Corrosion of reinforcement resistance · CPC title

• C04B2111/00525

  for metallic surfaces · CPC title

• C04B28/006 Primary

  containing mineral polymers, e.g. geopolymers of the Davidovits type · CPC title

• C04B2103/50

  Defoamers, air detrainers · CPC title

• C04B2103/302

  Water reducers · CPC title