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Modified vitrification micro-bead thermal insulation mortar and preparation method thereof

A vitrified microbead, thermal insulation technology, applied in the field of thermal insulation mortar, to achieve the effects of reducing water absorption, reducing thermal conductivity and saving costs

Active Publication Date: 2008-05-28
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hydrophobic treatment method involving vitrified microbeads and the heat insulation mortar using modified vitrified microbeads have not been reported abroad.

Method used

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  • Modified vitrification micro-bead thermal insulation mortar and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The mortar masterbatch and the modified vitrified microspheres are mixed according to the weight ratio of 1:2, and an appropriate amount of water is added to stir it evenly with a self-made electric stirrer. The formula of the mortar masterbatch is as follows: 42.5R cement: 91%; cellulose ether: 0.5%; rubber powder: 4%; wood fiber: 1.5%; polypropylene fiber: 0.4% calcium formate: 2.6%. Finally, a block of 300mm×300mm×30mm was made according to the regulations, and its thermal conductivity was tested to be 0.077W / m·K. See Figure 1 and Table 2 for the water absorption of unmodified vitrified microbeads.

Embodiment 2

[0036] Dilute FS305 organosilicon water repellent and water at a volume ratio of 1:10, and then spray it on the surface of low-quality vitrified microbeads through a commercially available brand sprayer. The vitrification ratio of the low-quality vitrified microbeads is less than 95 %, the ball forming rate is less than 80%, and the thermal conductivity is greater than 0.035W / m.K Vitrified microbeads. Stir with a homemade electric mixer to evenly spray. The hydrophobically treated vitrified microbeads were placed in an oven and baked at a temperature of 105° C. for 6 hours. The mortar masterbatch and the modified vitrified microspheres are mixed according to a weight ratio of 1:2, and an appropriate amount of water is added to stir them evenly with a stirrer. The formula of the mortar masterbatch is as follows: 42.5R cement: 87.3%; cellulose ether: 1.3%; rubber powder: 5.0%; wood fiber: 1.7%; polypropylene fiber: 0.4% calcium formate: 4.3%. Finally, a block of 300mm×300mm×30...

Embodiment 3

[0038] Dilute FS305 organosilicon water repellent and water at a volume ratio of 1:30, then spray it on the surface of low-quality vitrified microbeads through a commercial sprayer, and stir it with a self-made electric mixer to spray evenly. The hydrophobically treated vitrified microbeads were placed in an oven and baked at a temperature of 105° C. for 6 hours. Proportion the masterbatch and the modified vitrified microspheres in a ratio of 1:1 (weight ratio), add an appropriate amount of water, and stir it evenly with a stirrer. The formula of the mortar masterbatch is as follows: 42.5R cement: 89%; cellulose ether: 1%; rubber powder: 5%; wood fiber: 1%; polypropylene fiber: 0.3% calcium formate: 3.7%. Then make a 300mm×300mm×30mm block according to the regulations, and test its thermal conductivity to be 0.072W / m·K. See Figure 1 and Table 2 for the water absorption of the modified vitrified microbeads.

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Abstract

The invention discloses a modified vitrified micro bubbles thermal insulation mortar and a preparation method thereof. The steps of the preparation method are as follows: (1) modifying low quality vitrified micro bubbles: organic silicon hydrophobic agent is diluted by water, and the volume ratio between the hydrophobic agent and the water is 1: 10-1: 80 and the diluted hydrophobic agent is sprayed uniformly on the low quality vitrified micro bubbles; (2) drying: the vitrified micro bubbles treated by the hydrophobic agent is put into an oven for drying; (3) compounding the thermal insulation mortar: the master batch of the mortar and the modified vitrified micro bubbles are stirred uniformly according to the weight ratio 1:2-2:1, thus obtaining the modified vitrified micro bubbles thermal insulation mortar. The method can not only decrease the water absorption of the low quality vitrified micro bubbles but can also keep certain water-retaining rate; furthermore, the method also can decrease the thermal conductivity of the thermal insulation mortar and has simple production technique and obvious effect. The thermal conductivity of the thermal insulation mortar made by low quality vitrified micro bubbles not only meets the national quality standards, but also greatly reduces cost, thus being more easily to be popularized.

Description

Technical field: [0001] The invention relates to thermal insulation mortar, in particular to modified vitrified microbead thermal insulation mortar and a preparation method thereof. Background technique: [0002] The world's resources are becoming increasingly tense today, and the government is stepping up efforts to promote energy conservation and emission reduction, which is not only beneficial to the protection of the environment, but also conducive to the sustainable development of the country, improving energy efficiency, and improving my country's international competitiveness. As the construction industry, its energy consumption accounts for about 20.7% of the final energy consumption of the society, and reducing building energy consumption is one of the most important tasks in energy conservation. At present, the thermal insulation mortar used for wall insulation is made of organic matter or inorganic matter. The former has poor fireproof performance and poor volume...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B14/22C04B20/10C04B24/38C04B16/06
CPCC04B20/1051C04B2111/28C04B2103/0052C04B2103/46C04B28/02
Inventor 孟庆林李宁李秀辉
Owner SOUTH CHINA UNIV OF TECH
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