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A diatom plate with photocatalytic function and its production process

A production process, diatom board technology, applied in the direction of manufacturing tools, floors, covering/lining, etc., to achieve the effect of excellent adsorption and humidity control, good humidity control function, heat insulation, light weight and high strength

Active Publication Date: 2018-12-21
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiency that the current diatomite functional board does not have the function of adsorbing and sustainably decomposing indoor formaldehyde and other toxic and harmful organic pollutants, the present invention proposes an adjustable and adjustable Wet diatom plate with photocatalytic function and its production process

Method used

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  • A diatom plate with photocatalytic function and its production process
  • A diatom plate with photocatalytic function and its production process
  • A diatom plate with photocatalytic function and its production process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] ①Weigh 35kg of diatomite, 40kg of lime, 10kg of volcanic ash, 10kg of wood fiber, 5kg of calcium sulfate whiskers, 1kg of hydroxyethyl cellulose, and 400kg of water according to formula A, and add them into a mixer for dispersion and slurry mixing to obtain slurry A; Formula B weighs 40kg of diatomite, 40kg of lime, 5kg of volcanic ash, 5kg of quartz powder, 5kg of wood fiber, 5kg of attapulgite, 1kg of methyl hydroxyethyl cellulose, nitrogen-doped nano-TiO 2 Add 1.2kg of diatomite composite material and 400kg of water into the mixer to disperse and adjust slurry to obtain slurry B;

[0038] ②Filter and convey the uniformly mixed slurry B through the flow machine, and spray the adhesive polyvinyl alcohol evenly on the surface of the filter cake before it reaches the rotary drum forming machine. The spraying amount is the solid mass of the sprayed filter cake. 1.0%; the rotary drum forming machine rolls the filter cake of the slurry B uniformly sprayed with the adhesive ...

Embodiment 2

[0043] ①Weigh 30kg of diatomite, 40kg of lime, 10kg of volcanic ash, 5kg of quartz powder, 8kg of wood fiber, 7kg of calcium sulfate whiskers, 1.2kg of hydroxyethyl cellulose according to formula A, and add 360kg of water into the mixer to disperse and adjust the slurry to obtain Slurry A; Slurry B formula is the same as embodiment 1;

[0044] ②Filter and convey the uniformly mixed slurry B through the flow machine, and spray the adhesive polyethylene glycol evenly on the surface of the filter cake before it reaches the rotary drum forming machine, and the spraying amount is the solid mass of the sprayed filter cake 1.3% of 1.3%; the rotary drum forming machine rolls the slurry B filter cake with the surface evenly sprayed with adhesive on the rotating drum; Slurry A filter cake solid mass 0.7% binder polyethylene glycol, after slurry A is rolled continuously for 12 layers, it is automatically replaced with slurry B, and the whole laminated wet diatom is completed after slurry...

Embodiment 3

[0049] ①Weigh 40kg of diatomite, 35kg of lime, 10kg of quartz powder, 11kg of wood fiber, 4kg of calcium sulfate whiskers, 1.5kg of ethyl hydroxyethyl cellulose, and 400kg of water into a mixer for dispersion and slurry preparation according to formula A. Slurry A; Slurry B formula is the same as embodiment 1;

[0050] ②Filter and convey the uniformly mixed slurry B through the flow machine, and spray the adhesive polyvinyl alcohol evenly on the surface of the filter cake before it reaches the rotary drum forming machine. The spraying amount is the solid mass of the sprayed filter cake. 1.2%; the rotary drum forming machine rolls the slurry B filter cake with the surface evenly sprayed with adhesive on the rotating drum; after rolling one layer, the flow machine automatically changes to filter and convey the slurry A, and sprays the material Slurry A filter cake solid mass 0.6% binder polyvinyl alcohol, after slurry A is continuously rolled for 14 layers, it is automatically r...

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Abstract

The invention discloses a diatom plate with a photocatalysis function and a production process thereof. The diatom plate is a laminated diatom plate, and consists of multiple diatom unit layer plates; material layers of the diatom plate comprise surface layers located on two sides of the diatom plate and middle layers located between the surface layers on the two sides; totally 12 to 20 material layers are arranged for the diatom plate; the middle layers of the diatom plate are made of slurry A, and the surface layers of the diatom plate are made of slurry B; the slurry B contains a nano TiO2 / diatomite composite material. In addition, the invention further discloses the production process of the diatom plate with the photocatalysis function. The diatom plate can be used to adsorb indoor toxic and harmful pollutants and continuously decompose organic pollutants, such as formaldehyde, methylbenzene and ammonia gas, adsorbed and captured by the surface of the diatom plate under illumination, the purification efficiency is high, and the purification effect is lasting; the diatom plate has a good moisture regulation function, and is large in specific surface, good in heat conductivity coefficient, high in breaking strength and long in service life.

Description

technical field [0001] The invention belongs to the fields of mineral materials and applications and inorganic non-metallic materials, and in particular relates to a diatom plate with photocatalytic function and a production process thereof. Background technique [0002] Diatomaceous earth is a kind of siliceous sedimentary rock with biogenic remains of ancient diatoms. It has the characteristics of looseness, light weight, and porosity, and has a three-dimensional pore structure and nano-pore size distribution. The pore distribution is regular. It is widely used in the preparation of health and environmental protection. , Energy saving and other functional materials. As early as the 1980s, there was the production and application of microporous calcium silicate boards with diatomite and lime as the main raw materials and asbestos as the reinforcing fiber, formed by casting and molding, and cured by high temperature steam. However, the calcium silicate board produced by the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/10C04B14/08C04B22/06E04F13/075B28B1/20B28B11/24
CPCB28B1/20B28B11/24C04B14/08C04B22/06C04B28/10C04B2111/00017C04B2201/20C04B2201/32C04B2201/50E04F13/0866E04F2290/04C04B14/14C04B16/02C04B14/383C04B24/383C04B22/002C04B14/06C04B14/102
Inventor 郑水林孙志明
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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