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High-toughness cement-based composite wallboard with photocatalytic function and preparation method thereof

A composite wallboard, cement-based technology, applied in the field of functional building materials, can solve the problems of weak electron transport capacity and poor photocatalytic effect, and achieve the effects of strong electron transport capacity, good durability and efficient degradation.

Inactive Publication Date: 2020-02-18
CHINA WEST CONSTR ACAD OF BUILDING MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The most important ability for photocatalytic materials is electron transport ability. At present, photocatalytic building materials generally have weak electron transport ability and poor photocatalytic effect.

Method used

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  • High-toughness cement-based composite wallboard with photocatalytic function and preparation method thereof
  • High-toughness cement-based composite wallboard with photocatalytic function and preparation method thereof
  • High-toughness cement-based composite wallboard with photocatalytic function and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 As shown, a high-toughness cement-based composite wallboard with photocatalytic function of the present invention includes a high-toughness cement-based composite wallboard substrate 1 and a photocatalytic coating layer 2 .

[0029] Prepared by the following steps:

[0030] (1) Preparation of high toughness cement-based composite wallboard matrix

[0031] Weigh 1050g of ordinary Portland cement, 1100g of fly ash, 80g of sulphoaluminate cement, 120g of silica fume, 130g of microbeads, 680g of ultrafine powder and 1g of cellulose ether, and add them to the mixer, stirring at low speed for 3 minutes until uniform ; Weigh 10g of polycarboxylate water reducer and 600g of water, dissolve the polycarboxylate water reducer in water and pour it into the mixer, stir at low speed for 3 minutes to form a uniform cement slurry; weigh 50g of polyvinyl alcohol fiber , and add the fibers into the cement slurry, stir at low speed for 3 minutes, then stir at high speed...

Embodiment 2

[0036] A high-toughness cement-based composite wallboard with photocatalytic function of the present invention is prepared through the following steps:

[0037] (1) Preparation of high toughness cement-based composite wallboard matrix

[0038] Weigh 900g of ordinary Portland cement, 1250g of fly ash, 120g of sulphoaluminate cement, 100g of silica fume, 155g of microbeads, 750g of ultrafine powder and 1.5g of cellulose ether, and add them to a mixer, and stir at a low speed for 2 minutes to Uniform; Weigh 8g of nano-based superplasticizer and 750g of water, dissolve the nano-based superplasticizer in water and pour it into the mixer, stir at low speed for 3 minutes to form a uniform cement slurry; weigh 45g of polyacrylonitrile fiber, and put Add the fibers into the cement slurry, stir at low speed for 3 minutes, then stir at high speed for 1 minute, until the polyvinyl alcohol fibers are evenly dispersed in the slurry; inject the stirred slurry into the mold, remove the mold a...

Embodiment 3

[0043] A high-toughness cement-based composite wallboard with photocatalytic function of the present invention is prepared through the following steps:

[0044] (1) Preparation of high toughness cement-based composite wallboard matrix

[0045](2) Weigh 1150g of ordinary Portland cement, 950g of fly ash, 70g of sulphoaluminate cement, 130g of silica fume, 110g of microbeads, 800g of superfine powder and 0.5g of cellulose ether, and add them to the mixer and stir at a low speed 3 minutes until uniform; weigh 12g polycarboxylate water reducer and 700g water, dissolve the polycarboxylate water reducer in water and pour it into the mixer, stir at low speed for 3 minutes to form a uniform cement slurry; weigh 60g Aramid fiber, and add the fiber into the cement slurry, stir at low speed for 4 minutes, then stir at high speed for 1 minute, until the polyvinyl alcohol fiber is evenly dispersed in the slurry; inject the stirred slurry into the mold, pre-cure Remove the mold after 1 day...

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Abstract

The invention discloses a high-toughness cement-based composite wallboard with a photocatalytic function and a preparation method thereof. The high-toughness cement-based composite wallboard consistsof a photocatalytic coating layer and a high-toughness cement-based composite wallboard substrate, and the high-toughness cement-based composite wallboard substrate consists of the following raw materials in parts by weight: 90-130 parts of ordinary Portland cement, 90-130 parts of fly ash, 6-12 parts of sulphoaluminate cement, 10-18 parts of silica fume, 10-16 parts of micro beads, 4-6 parts of polymer fibers, 0-0.2 part of cellulose ether, 0.8-2 parts of an additive, 54-70 parts of water and 60-80 parts of superfine powder. Compared with the prior art, the composite wallboard has the advantages of excellent mechanical property and good durability, and the preparation method is simple and easy to operate. In addition, the prepared photocatalytic coating layer has excellent electronic transmission capacity, so that compared with other photocatalytic building materials, the high-toughness cement-based composite wallboard has a better photocatalytic degradation effect, and self-cleaningand high-efficiency removal of organic pollutants in the environment can be realized.

Description

technical field [0001] The invention relates to a high-toughness cement-based composite wallboard with photocatalytic function and a preparation method thereof, belonging to the technical field of functional building materials. Background technique [0002] High-toughness cement-based composites have the characteristics of strain hardening and multi-slit cracking, and have excellent performance in terms of safety, durability, and applicability. High-toughness cement-based composite materials can well solve various defects caused by brittleness and weak tensile properties of traditional concrete. Traditional wallboard materials have shortcomings such as large thickness, low strength, easy cracking, and poor durability. Wallboards made of high-toughness cement-based composite materials can well solve these problems. [0003] Photocatalytic technology is the use of solar energy to degrade organic matter through redox reactions. Due to the advantages of fast degradation rate an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B28/34C04B41/67
CPCC04B28/06C04B28/344C04B41/009C04B41/5092C04B41/67C04B2111/00017C04B2111/00508C04B2111/00612C04B2201/50C04B7/02C04B18/08C04B18/146C04B24/383C04B22/002C04B2103/302C04B20/0016C04B16/0641C04B20/0076C04B14/30C04B14/024C04B24/24C04B24/124C04B24/32C04B16/0658C04B24/045C04B24/003C04B16/0691C04B24/08C04B24/42C04B41/4539
Inventor 高育欣程宝军王军杨文肖啸麻鹏飞余保英周建伟李爽
Owner CHINA WEST CONSTR ACAD OF BUILDING MATERIALS CO LTD