Heat-insulating concrete containing aerogel grains and preparation method thereof

A technology of aerogel particles and gel particles, applied in the field of building materials, can solve the problems of low aerogel density, poor self-strength, poor compressive strength, etc., and achieves broad market application space, good thermal insulation effect, crack resistance, etc. high degree of effect

Inactive Publication Date: 2017-12-08
优澎(嘉兴)新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The density of airgel is very low, and the bonding force between the elements that make up the gel skeleton is weak, so its own strength is poor
Therefore, the thermal insu

Method used

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  • Heat-insulating concrete containing aerogel grains and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] Example 1

[0030] Weigh the raw materials according to the following ratio:

[0031] 32.5#Portland cement (Conch brand) 100 parts, fly ash (Shanghai Shidongkou Power Plant) 30 parts, reinforced aerogel particles (homemade) 25 parts, hydroxypropyl methylcellulose (Xi'an Ruitai Cellulose) Co., Ltd.) 0.5 parts, polyethylene glycol (Dow Chemical) 0.5 parts, redispersible latex powder (Germany Wacker) 1 part, anti-cracking fiber (Jining Huakai Resin Co., Ltd.) 1 part.

[0032] Among them, the preparation method of reinforced aerogel particles is: 1 part by weight of aerogel particles (Shanghai Yapeng New Material Technology Co., Ltd.) is crushed to 120 mesh with a crusher, and 8 parts by weight of polyvinyl alcohol (Anhui Wanwei The aqueous solution of High-tech Materials Co., Ltd. is used as a binder, and particles with an average particle size of 2 mm are made by a fluidized bed granulation method.

[0033] Thereafter, the above-mentioned weighed raw materials are mixed uniforml...

Example Embodiment

[0038] Example 2

[0039] Weigh the raw materials according to the following ratio:

[0040] 42.5# Portland cement (Conch brand) 100 parts by weight, reinforced aerogel particles (homemade) 10 parts by weight, hydroxymethyl cellulose (Shijiazhuang Hengli Cellulose Co., Ltd.) 1 part by weight, polyvinyl alcohol (Anhui Wanwei High-tech Materials Co., Ltd.) 1 part by weight, redispersible latex powder (WACKER, Germany) 1 part by weight, wood anti-cracking fiber (Shanghai Yingjia Industrial Development Co., Ltd.) 1 part by weight

[0041] Among them, the preparation method of the reinforced aerogel particles is: mixing 1 part by weight of aerogel particles (Shanghai Yapeng New Material Technology Co., Ltd.) and 5 parts by weight of styrene-acrylic emulsion (Shanghai Shenze Chemical Technology Co., Ltd.), using high speed The agitator was stirred for 5 minutes and dried to obtain aerogel agglomerates. The aerogel agglomerates were broken into 35 mesh particles with a crusher.

[0042] The...

Example Embodiment

[0046] Example 3

[0047] Weigh the raw materials according to the following ratio:

[0048] 42.5# Portland cement (Conch brand) 100 parts by weight, reinforced aerogel particles (homemade) 20 parts by weight, hydroxypropyl methylcellulose (Xi'an Ruitai Cellulose Co., Ltd.) 0.5 parts by weight, polyacrylamide ( Shanghai Jinjinle Chemical Plant) 1 part by weight, redispersible latex powder (WACKER, Germany) 1 part by weight, polypropylene crack-resistant fiber (Jining Huakai Resin Co., Ltd.) 0.5 parts by weight, wood crack-resistant fiber (Shanghai Yingjia Industrial Development Co., Ltd.) 0.5 parts by weight.

[0049] Among them, the preparation method of the reinforced aerogel particles is: adding the bacterial cellulose skeleton during the production of the aerogel, so that the gel grows in the cellulose network, and the formed aerogel is bound in the cellulose network , To form reinforced aerogel particles.

[0050] Among them, the preparation method of the bacterial cellulose sk...

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Abstract

The invention discloses heat-insulating concrete containing aerogel grains and a preparation method thereof. The heat-insulating concrete containing the aerogel grains is characterized by being prepared from the following components in parts by weight: 10 to 50 parts of portland cement, 0.1 to 5 parts of the aerogel grains, 0 to 50 parts of vitrified micro-beads, 0 to 40 parts of fly ash, 0.5 to 10 parts of a dispersion auxiliary agent, 1 to 10 parts of redisperable adhesive powder, 1 to 10 parts of cellulose ether, 0 to 10 parts of anti-cracking fibers and 40 to 100 parts of water, wherein the aerogel grains are strengthened aerogel grains. According to the heat-insulating concrete disclosed by the invention, a preparation process is relatively simple and a heat insulation effect of an aerogel material is kept to the greatest extent; after cement is cured and dried, the concrete has waterproof performance. Furthermore, the strengthened aerogel grains have relatively high strength and are not easily broken; a cement product which takes the strengthened aerogel grains as heat-insulating filling has higher compression-resisting and anti-cracking degrees.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a heat-insulating concrete and a preparation method thereof. Background technique [0002] Concrete is widely used in modern buildings. Insulating concrete made by mixing lightweight thermal insulation materials into cement has the advantages of convenient construction and fire prevention. Compared with external insulation materials such as extruded polystyrene boards and rock wool boards, thermal insulation concrete has no joints or anchors during construction, thereby reducing thermal bridges and effectively reducing the risk of falling off. Therefore, it has become a widely used Welcome building insulation materials. The thermal insulation components used in traditional thermal insulation concrete are mainly vitrified microbeads, expanded perlite, etc. The thermal insulation concrete containing these materials is cheap, but the thermal conductivity is generally h...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B18/02
CPCC04B28/04C04B18/022C04B2111/00525C04B2201/30C04B2201/50C04B14/064C04B18/08C04B24/383C04B24/32C04B2103/0057C04B20/0048C04B24/2623C04B16/02C04B24/2652C04B16/0633C04B24/2676
Inventor 向军辉关运龙赛华征杨虎陈俊勇
Owner 优澎(嘉兴)新材料科技有限公司
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