Lightweight inorganic insulation board containing silica aerogel and preparation method thereof

A silica and aerogel technology, applied in the field of building materials, can solve the problems of high cost, complicated process, affecting the use effect, etc., and achieve the effects of good thermal insulation performance, high thermal conductivity, and simple and controllable process.

Inactive Publication Date: 2014-02-05
BEIJING BUILDING MATERIALS ACADEMY OF SCI RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the thermal insulation boards on the market are divided into inorganic thermal insulation boards and organic thermal insulation boards. Among them, inorganic thermal insulation boards are low in cost and have a large application market. However, due to the high thermal conductivity and large weight of inorganic thermal insulation boards, the use effect is seriously affected.
[0003] Invention patent CN10279586A discloses a method for preparing an airgel-con

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] An inorganic lightweight insulation board containing silica airgel is an inorganic lightweight cement insulation board, and the insulation board includes the following raw materials in parts by weight:

[0065] Cement: 15-19.5

[0066] Ash calcium: 0.8-4.8

[0067] Silica airgel: 0.2-0.4

[0068] Light aggregate filler: 22-26

[0069] Surfactant: 0.3-0.5

[0070] Fiber: 0.1-0.6

[0071]Rubber powder: 0.6-0.8

[0072] Water: 47-54.

[0073] Wherein, the cement is ordinary Portland cement; the gray calcium fineness is 300-400 mesh, and its whiteness is not less than 90%; the density of the silica airgel is 100-370Kg / m 3 ; The light aggregate filler is expanded perlite, vitrified microspheres, expanded vermiculite; the surfactant is methyl cellulose ether, hydroxyethyl methyl cellulose ether, carboxymethyl cellulose ether, hydroxyl One or two combinations of ethyl cellulose ether and hydroxypropyl methyl cellulose ether; the rubber powder is latex powder and polyvin...

Embodiment 2

[0079] This embodiment is a preferred version of Embodiment 1, and the unit of weight in this embodiment is kilogram (1000 grams), wherein: The raw materials in the ratio of parts by weight are:

[0080] Cement: 18

[0081] Ash Calcium: 2.04

[0082] Silica airgel: 0.3

[0083] Light aggregate filler: 25.3

[0084] Surfactant: 0.3

[0085] Fiber: 0.41

[0086] Rubber powder: 0.65

[0087] Water: 53

Embodiment 3

[0089] This embodiment is a preferred version of Embodiment 1, and the unit of weight in this embodiment is kilogram (1000 grams), wherein: The raw materials in the ratio of parts by weight are:

[0090] Cement: 19.5

[0091] Ash Calcium: 4.8

[0092] Silica airgel: 0.4

[0093] Light aggregate filler: 26

[0094] Surfactant: 0.5

[0095] Fiber: 0.6

[0096] Rubber powder: 0.8

[0097] Water: 54.

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Abstract

The invention discloses a lightweight inorganic insulation board containing silica aerogel and a preparation method thereof. The preparation method comprises the following steps: a. preparing surfactant liquid: fully stirring a surfactant and water to prepare a uniform surfactant liquid for standby use; b. preparing powder: fully mixing cement, ash calcium, aerogel, light aggregate fillers, fibers and latex powder and stirring uniformly to prepare powder for standby use; c. preparing the inorganic insulation board: adding the uniformly mixed powder to the surfactant liquid within 5-10 minutes through stirring, then filling the slurry into a die for forming and curing at normal temperature, thus obtaining the final product. Compared with the traditional inorganic insulation boards and insulation boards containing non-silica aerogel, the prepared inorganic insulation board containing silica aerogel has the characteristics of short production cycle, simple and controllable process and low price, has good heat insulation property and effectively solves the problems of high heat conductivity coefficients and higher water absorption of conventional inorganic insulation boards, and the heat conductivity coefficient of the inorganic insulation board can be reduced by 10-30%.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to an inorganic lightweight insulation board containing silica airgel and a preparation method thereof, which can be prepared at normal temperature without special constant temperature and pressure equipment, and the prepared inorganic insulation board Compared with the traditional inorganic insulation board, the thermal conductivity is reduced by 10~30%, and it has better thermal insulation performance. Background technique [0002] At present, the thermal insulation boards on the market are divided into inorganic thermal insulation boards and organic thermal insulation boards. Among them, inorganic thermal insulation boards are low in cost and have a large application market. However, due to the high thermal conductivity and large weight of inorganic thermal insulation boards, the use effect is seriously affected. . [0003] Invention patent CN10279586A discloses a m...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B14/06
Inventor 郝利炜杨飞华吴学谦王翌路国忠
Owner BEIJING BUILDING MATERIALS ACADEMY OF SCI RES
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