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Modified diatomite and preparation method of modified diatomite preparation method, as well as compound external wall insulation material containing modified diatomite and preparation method of material

An external wall thermal insulation and diatomite technology, applied in the field of materials, can solve the problems of reducing the content of diatomite, reducing the microporous structure and reducing the adsorption capacity of diatomite to harmful substances, reducing the flame retardant performance of building materials, etc., and achieving good integrity , good thermal insulation and flame retardant effects, and improved strength

Active Publication Date: 2013-02-06
长白朝鲜族自治县天宝硅藻土功能制品有限公司
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  • Abstract
  • Description
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Problems solved by technology

However, the addition of organic substances, while reducing the content of diatomite, not only greatly reduces the flame retardancy of building materials, but also blocks the microporous structure of diatomite itself, reduces the adsorption capacity of diatomite to harmful substances, and release harmful substances

Method used

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  • Modified diatomite and preparation method of modified diatomite preparation method, as well as compound external wall insulation material containing modified diatomite and preparation method of material
  • Modified diatomite and preparation method of modified diatomite preparation method, as well as compound external wall insulation material containing modified diatomite and preparation method of material
  • Modified diatomite and preparation method of modified diatomite preparation method, as well as compound external wall insulation material containing modified diatomite and preparation method of material

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preparation example Construction

[0091] The tap density provided by the present invention is 450kg / m 3 ~490kg / m 3 The preparation method of the modified diatomite is divided into the following steps: firstly, obtain diatomite; then, take the diatomite, add sodium carbonate, activate it at a high temperature of 900°C to 1100°C after heating, and break it, namely have to;

[0092] The tap density of diatomite used in this method is not less than 500kg / m 3 ; The mass ratio of sodium carbonate to the diatomite is 1-3:100; the heating temperature is 600°C-900°C.

[0093] The present invention also provides a tap density of 450kg / m 3 ~490kg / m 3 The modified diatomite, its preparation method is divided into the following steps:

[0094] Step 1, obtaining diatomite;

[0095] Step 2. Take diatomaceous earth, add sodium carbonate, activate it at a high temperature of 900°C~1100°C after heating, and break it to get it;

[0096] The tap density of diatomite used in this method is not less than 500kg / m 3 ; The ma...

Embodiment 1

[0156] Embodiment 1 tap density is 450kg / m 3 Preparation of Modified Diatomite

[0157] Take the diatomite raw ore, after a year of natural weathering, decomposition, and drying, select the part with a moisture content below 15% for crushing, and crush it to 30 mesh to 120 mesh; at the same time, further dry it to reduce the moisture content to 4%~ 6%; and then select the qualified products with the required particle size of 80~120 mesh through the air separation device. The obtained diatomite is detected by the national standard determination method, and its tap density is 500kg / m after determination. 3 .

[0158] Take the tap density as 500kg / m 3 Diatomite mixed with 1% sodium carbonate by mass, calcined at 600°C for 600 seconds, activated at 900°C for 60 seconds, so that a small amount of vitrified sodium silicate is produced on the surface of the micropores of diatomite, thereby thickening the individual diatoms The thin position of the surface increases the strength o...

Embodiment 2

[0161] Embodiment 2 tap density is 470kg / m 3 Preparation of Modified Diatomite

[0162] Take the diatomite raw ore, after a year of natural weathering, decomposition, and drying, select the part with a moisture content below 15% for crushing, and crush it to 30 mesh to 120 mesh; at the same time, further dry it to reduce the moisture content to 4%~ 6%; and then select the qualified products with the required particle size of 80~120 mesh through the air separation device. The obtained diatomite is detected by the national standard measuring method, and its tap density is 600kg / m after determination. 3 .

[0163] Take the tap density as 600kg / m 3 Diatomite mixed with 2% sodium carbonate by mass, calcined at 750°C for 600 seconds, and activated at 1000°C for 50 seconds, so that a small amount of vitrified sodium silicate is produced on the surface of the micropores of diatomite, thereby thickening the individual diatoms The thin position of the surface increases the strength ...

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Abstract

The invention provides modified diatomite with the tap density of 450-490kg / m<3> and a preparation method of the modified diatomite. The preparation method of the modified diatomite specifically comprises the following steps: obtaining diatomite, adding sodium carbonate, heating, activating at the high temperature of 900-1100 DEG C, and crushing to obtain the modified diatomite. The modified diatomite is high in whiteness, low in tap density, high in strength and good in adsorption performance and insulation performance. In addition, the invention further provides a compound external wall insulation material and a preparation method of the compound external wall insulation material. The compound external wall insulation material comprises an independent G type material and an independent Y type material, wherein the G type material comprises the modified diatomite with the tap density of 450-490kg / m<3>, expanded perlite, calcium hydroxide, sepiolite velvet and a first slow release agent; and the Y type material comprises silica sol and a second slow release agent. The compound external wall insulation material has good insulation and flame-retardant effects, and is low in organic content, high in safe and environmental performance, high in strength and good in integrity.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to a modified diatomite, a preparation method thereof, and an application thereof in preparing composite exterior wall insulation materials. Background technique [0002] Thermal insulation materials and products are an important factor affecting building energy efficiency. The use of thermal insulation materials in buildings can greatly reduce energy consumption, thereby reducing environmental pollution and the greenhouse effect. [0003] The promotion and application of building energy-saving wall insulation technology and products in my country started in the mid-1980s. The materials used at that time mainly included: perlite, composite silicate, sepiolite, and external wall insulation mortar products compounded with organic silicon. After nearly 30 years of development, my country's building insulation materials have gradually diversified. At present, the commonly used insulat...

Claims

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Application Information

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IPC IPC(8): C04B14/08C04B28/24
Inventor 庄广明
Owner 长白朝鲜族自治县天宝硅藻土功能制品有限公司
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