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Inorganic thermal-insulation mortar and production method thereof

A technology of inorganic thermal insulation mortar and silica, applied in the direction of inorganic chemistry, chemical instruments and methods, non-metallic elements, etc., can solve the problems of affecting the thermal insulation effect of mortar, large shrinkage of thermal insulation mortar, high water absorption rate, etc., to improve the strength and Its impermeability, low density and high porosity effect

Inactive Publication Date: 2017-11-03
常州市天宁区鑫发织造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an inorganic thermal insulation mortar and its preparation method in view of the defects that the thermal insulation mortar currently used has large shrinkage and high water absorption rate, which leads to cracking and falling off, water seepage, and affects the thermal insulation effect of the mortar.

Method used

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  • Inorganic thermal-insulation mortar and production method thereof

Examples

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example 1

[0029] Weigh 1.0kg of rice husk, wash it twice with deionized water, soak it in 2L hydrochloric acid with a mass fraction of 10%, and filter it after 3 hours to obtain the filter residue, wash the filter residue three times with deionized water, and then put the filter residue in a drying box , dried at 70°C for 8 hours to obtain pretreated rice husks, weighed 100g of pretreated rice husks, placed them in a resistance furnace, heated to 600°C at 10°C / min, kept the temperature for calcination for 1 hour, and cooled to room temperature to obtain rice husks ash, add rice husk ash to 1.5L sodium hydroxide solution with a mass fraction of 5%, in a constant temperature water bath at 90°C, stir at 300r / min for 2h, then filter and collect the filtrate to obtain a sodium silicate mixture. The mixed solution is ion-exchanged through a sodium ion exchange resin column at 10mL / min. After removing sodium ions, silicic acid sol is obtained. Add 10mL tetraethyl silicate and 8g aluminum silica...

example 2

[0031]Weigh 1.1kg of rice husk, wash it twice with deionized water, soak it in 2L hydrochloric acid with a mass fraction of 10%, and filter it after 4 hours to obtain a filter residue, wash the filter residue 4 times with deionized water, and then place the filter residue in a drying box , dried at 75°C for 9 hours to obtain pretreated rice husks, weighed 150g of pretreated rice husks, placed them in a resistance furnace, heated to 625°C at 13°C / min, kept the temperature for calcination for 1h, and cooled to room temperature to obtain rice husks ash, add rice husk ash to 1.8L of 5% sodium hydroxide solution, stir at 350r / min for 2 hours in a constant temperature water bath at 93°C, then filter and collect the filtrate to obtain a sodium silicate mixture. The mixed solution is ion-exchanged through a sodium ion exchange resin column at 11mL / min. After removing sodium ions, silicic acid sol is obtained. Add 11mL tetraethyl silicate and 9g aluminum silicate fiber to the silicic ac...

example 3

[0033] Weigh 1.2kg of rice husk, wash it with deionized water for 3 times, soak it in 3L of hydrochloric acid with a mass fraction of 10%, and filter it after 5 hours to obtain a filter residue, wash the filter residue with deionized water for 5 times, and then put the filter residue in a drying box , dried at 80°C for 10 hours to obtain pretreated rice husks, weighed 200g of pretreated rice husks, placed them in a resistance furnace, heated to 650°C at 15°C / min, kept the temperature for calcination for 2 hours, and cooled to room temperature to obtain rice husks ash, add rice husk ash to 2.0L of 5% sodium hydroxide solution, stir at 400r / min for 3 hours in a constant temperature water bath at 95°C, then filter and collect the filtrate to obtain a sodium silicate mixture. The mixed solution is ion-exchanged through a sodium ion exchange resin column at 12mL / min. After removing sodium ions, silicic acid sol is obtained. Add 12mL tetraethyl silicate and 10g aluminum silicate fibe...

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Abstract

The invention belongs to the technical field of building materials and particularly relates to inorganic thermal-insulation mortar and a production method thereof. The production method includes: using rice husks as the raw material, performing pickling preprocessing, calcining, using alkali dissolution to extract sodium silicate, removing impurities to obtain silicic acid, adding aluminum silicate fibers and tetraethyl silicate to serve as the framework of gel, performing condensation polymerization to deposit silicon dioxide composite hydrogel on the framework, cleaning with anhydrous ethanol and normal hexane, using trimethylchlorosilane to perform hydrophobic modification to obtain silicon dioxide aerogel, using the capillary force of the silicon dioxide aerogel adsorb paraffin, serving as the phase change thermal storage material, into pores to compact the aerogel, mixing the prepared silicon dioxide composite aerogel phase change material with expanded and vitrified small balls, silica fume and the like, and discharging to obtain the inorganic thermal-insulation mortar. The prepared inorganic mortar is small in heat conductivity coefficient, low in contractibility rate, high in strength, capable of effectively increasing the crack resistance and seepage resistance of the mortar and capable of prolonging building service life.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to an inorganic thermal insulation mortar and a preparation method thereof. Background technique [0002] Building thermal insulation mortar reduces building energy consumption by improving the thermal insulation performance of buildings, which is the most basic way to achieve building energy conservation. The new inorganic thermal insulation mortar is a green and environmentally friendly mortar developed on the basis of traditional mortar. As a new type of wall material, it plays an important role in reducing building energy consumption. It is more traditional in terms of environmental protection, use function and construction technology. Mortar has unparalleled technical advantages. Therefore, the development of new inorganic thermal insulation mortar has important social and economic significance. [0003] Insulation mortar is mainly divided into organic ...

Claims

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Application Information

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IPC IPC(8): C04B28/04C01B33/158C04B111/34
CPCC04B28/04C01B33/1585C04B2111/346C04B2201/20C04B2201/32C04B2201/50C04B14/22C04B18/146C04B16/0633C04B24/383C04B14/062C04B24/08C04B24/2623C04B24/24
Inventor 赵玲玲杨阳李雪晴
Owner 常州市天宁区鑫发织造有限公司
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